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1

40Ar-39Ar Geochronology Of Magmatic Activity, Magma Flux And Hazards At  

Open Energy Info (EERE)

Ar-39Ar Geochronology Of Magmatic Activity, Magma Flux And Hazards At Ar-39Ar Geochronology Of Magmatic Activity, Magma Flux And Hazards At Ruapehu Volcano, Taupo Volcanic Zone, New Zealand Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: 40Ar-39Ar Geochronology Of Magmatic Activity, Magma Flux And Hazards At Ruapehu Volcano, Taupo Volcanic Zone, New Zealand Details Activities (0) Areas (0) Regions (0) Abstract: We have determined precise eruption ages for andesites from Ruapehu volcano in the Tongariro Volcanic Centre of the Taupo Volcanic Zone (TVZ) using 40Ar/39Ar furnace step-heating of separated groundmass concentrates. The plateau ages indicate several eruptive pulses near 200, 134, 45, 22 and <15 ka and, based on our and previous field mapping confirm the lavas of the Te Herenga Formation as the oldest exposed part of the

2

Factors Influencing Volcanic Ash Dispersal from the 1995 and 1996 Eruptions of Mount Ruapehu, New Zealand  

Science Conference Proceedings (OSTI)

The prediction of the dispersal of volcanic ash from events such as the Ruapehu eruptions of 1995 and 1996 is important, not only for civil-defense authorities who need to warn people in downwind areas, but for airline companies that have to ...

Richard Turner; Tony Hurst

2001-01-01T23:59:59.000Z

3

Shield Volcano | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Shield Volcano Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Shield Volcano Dictionary.png Shield Volcano: A dome shaped volcano with gently sloping sides and a broad base characteristic of relatively low viscosity, basaltic lava eruptions. Other definitions:Wikipedia Reegle Topographic Features List of topographic features commonly encountered in geothermal resource areas: Mountainous Horst and Graben Shield Volcano Flat Lava Dome Stratovolcano Cinder Cone Caldera Depression Resurgent Dome Complex Schematic representation of the internal structure of a typical shield

4

Geology of Kilauea Volcano | Open Energy Information  

Open Energy Info (EERE)

Geology of Kilauea Volcano Geology of Kilauea Volcano Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Geology of Kilauea Volcano Abstract This paper summarizes studies of the structure, stratigraphy, petrology, drill holes, eruption frequency, and volcanic and seismic hazards of Kilauea volcano. All the volcano is discussed, bul the focus is on its lower east rift zone (LERZ) because active exploration for geothermal energy is concentrated in that area. Kilauea probably has several separate hydrothermal-convection systems lhat develop in response to the dynamic behavior of the volcano and the influx of abundant meteoric water, of some of these hydrothermal convection systems are known through studies of surface geology,and drill holes. Observations of eruptions during the past

5

Chemistry of spring and well waters on Kilauea Volcano, Hawaii...  

Open Energy Info (EERE)

waters on Kilauea Volcano, Hawaii, and vicinity Abstract Published and new data for chemical and isotopic samples from wells and springson Kilauea Volcano and vicinity are...

6

When mud volcanoes sleep: Insight from seep geochemistry at the Dashgil mud volcano, Azerbaijan  

E-Print Network (OSTI)

When mud volcanoes sleep: Insight from seep geochemistry at the Dashgil mud volcano, Azerbaijan A Petroleum Research, Oslo Research Park, 0349 Oslo, Norway c Geology Institute Azerbaijan, Husein Avenue 29A, Baku, Azerbaijan d Moscow State University, Faculty of Geology, Vorobjevy Gory, Moscow 119992, Russia e

Mazzini, Adriano

7

Gravity model studies of Newberry Volcano, Oregon  

SciTech Connect

Newberry, Volcano, a large Quaternary volcano located about 60 km east of the axis of the High Cascades volcanoes in central Oregon, has a coincident positive residual gravity anomaly of about 12 mGals. Model calculations of the gravity anomaly field suggest that the volcano is underlain by an intrusive complex of mafic composition of about 20-km diameter and 2-km thickness, at depths above 4 km below sea level. However, uplifted basement in a northwest trending ridge may form part of the underlying excess mass, thus reducing the volume of the subvolcanic intrusive. A ring dike of mafic composition is inferred to intrude to near-surface levels along the caldera ring fractures, and low-density fill of the caldera floor probably has a thickness of 0.7--0.9 km. The gravity anomaly attributable to the volcano is reduced to the east across a north-northwest trending gravity anomaly gradient through Newberry caldera and suggests that normal, perhaps extensional, faulting has occurred subsequent to caldera formation and may have controlled the location of some late-stage basaltic and rhyolitic eruptions. Significant amounts of felsic intrusive material may exist above the mafic intrusive zone but cannot be resolved by the gravity data.

Gettings, M.E.; Griscom, A.

1988-09-10T23:59:59.000Z

8

Haleakala Volcano Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Haleakala Volcano Geothermal Area Haleakala Volcano Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Haleakala Volcano Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (7) 10 References Area Overview Geothermal Area Profile Location: Hawaii Exploration Region: Hawaii Geothermal Region GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed. Add a new Operating Power Plant

9

Mudpots, Mud Pools, or Mud Volcanoes | Open Energy Information  

Open Energy Info (EERE)

Mudpots, Mud Pools, or Mud Volcanoes Mudpots, Mud Pools, or Mud Volcanoes Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Mudpots, Mud Pools, or Mud Volcanoes Dictionary.png Mudpots, Mud Pools, or Mud Volcanoes: A kind of hot spring or fumarole with limited water causing a bubbling pool with a consistency of mud or clay. Other definitions:Wikipedia Reegle Modern Geothermal Features Typical list of modern geothermal features Hot Springs Fumaroles Warm or Steaming Ground Mudpots, Mud Pools, or Mud Volcanoes Geysers Blind Geothermal System Mudpot in Yellowstone National Park(reference: nps.gov) Mudpots and mud pools are actually hot springs or fumaroles with limited amounts of water but a lot of clay from surrounding rock and soil causing a boiling slurry. Not to be confused with mud volcanoes, which are the

10

Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands,  

Open Energy Info (EERE)

Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands, Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands, Italy) Revealed By Geophysical And Geochemical Approaches- Implications For General Fluid Flow Models On Volcanoes Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands, Italy) Revealed By Geophysical And Geochemical Approaches- Implications For General Fluid Flow Models On Volcanoes Details Activities (0) Areas (0) Regions (0) Abstract: On March 15th 2007 a paroxysmal explosion occurred at the Stromboli volcano. This event generated a large amount of products, mostly lithic blocks, some of which impacted the ground as far as down to 200 m a.s.l., about 1.5 km far away from the active vents. Two days after the

11

Mercury Vapor At Haleakala Volcano Area (Thomas, 1986) | Open Energy  

Open Energy Info (EERE)

Mercury Vapor At Haleakala Volcano Area (Thomas, 1986) Mercury Vapor At Haleakala Volcano Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Mercury Vapor At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Mercury Vapor Activity Date Usefulness not indicated DOE-funding Unknown Notes The field survey program on the northwest rift zone consisted of soil mercury and radon emanometry surveys, groundwater temperature and chemistry studies, Schlumberger resistivity soundings and self-potential profiles. Geophysical and geochemical surveys along this rift (southwest) were limited by difficult field conditions and access limitations. The geophysical program consisted of one Schlumberger sounding, one

12

A Strontium Isotopic Study Of Newberry Volcano, Central Oregon...  

Open Energy Info (EERE)

Strontium Isotopic Study Of Newberry Volcano, Central Oregon- Structural And Thermal Implications Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A...

13

Geothermometry At Haleakala Volcano Area (Thomas, 1986) | Open Energy  

Open Energy Info (EERE)

Geothermometry At Haleakala Volcano Area (Thomas, 1986) Geothermometry At Haleakala Volcano Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Geothermometry Activity Date Usefulness not indicated DOE-funding Unknown Notes The field survey program on the northwest rift zone consisted of soil mercury and radon emanometry surveys, groundwater temperature and chemistry studies, Schlumberger resistivity soundings and self-potential profiles. Geophysical and geochemical surveys along this rift (southwest) were limited by difficult field conditions and access limitations. The geophysical program consisted of one Schlumberger sounding, one

14

EA-1897: AltaRock's Newberry Volcano EGS Demonstration near Bend...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

7: AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon EA-1897: AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon Summary This EA evaluates the...

15

Electrical structure of Newberry Volcano, Oregon  

SciTech Connect

From the interpretation of magnetotelluric, transient electromagnetic, and Schlumberger resistivity soundings, the electrical structure of Newberry Volcano in central Oregon is found to consist of four units. From the surface downward, the geoelectrical units are (1) very resistive, young, unaltered volcanic rock, (2) a conductive layer of older volcanic material composed of altered tuffs, (3) a thick resistive layer thought to be in part intrusive rocks, and (4) a lower-crustal conductor. This model is similar to the regional geoelectrical structure found through the Cascade Range. Inside the caldera, the conductive second layer corresponds to the steep temperature gradient and alteration minerals observed in the USGS Newberry 2 test hole. Drill hole information on the south and north flanks of the volcano (test holes GES N-1 and GEO N-3, respectively) indicates that outside the caldera the conductor is due to alteration minerals (primarily smectite) and not high-temperature pore fluids. On the flanks of Newberry the conductor is generally deeper than inside the caldera, and its deepens with distance from the summit.

Fitterman, D.V.; Stanley, W.D.; Bisdorf, R.J.

1988-09-10T23:59:59.000Z

16

Hydrothermal system at Newberry Volcano, Oregon  

SciTech Connect

Results of recent geological and geophysical studies at Newberry Volcano have been incorporated into conceptual and numerical models of a magma-based hydrothermal system. Numerical simulations begin with emplacement of a small magma body, the presumed source of silicic eruptions at Newberry that began about 10,000 B.P., into a thermal regime representing 100,000 years of cooling of a large underlying intrusion. Simulated flow patterns and thermal histories for three sets of hypothetical permeability values are compatible with data from four geothermal drill holes on the volcano. Meteoric recharge cools the caldera-fill deposits, but thermal water moving up a central conduit representing a permeable volcanic vent produces temperatures close to those observed in drill holes within the caldera. Meteoric recharge from the caldera moves down the flanks and creates a near-isothermal zone that extends several hundred meters below the water table, producing temperature profiles similar to those observed in drill holes on the flanks. The temperatures observed in drill holes on the flanks are not influenced by the postulated Holocene magma body. The elevated temperature gradients measured in the lower portions of these holes may be related to the cumulative effect of older intrusions. The models also indicate that meteoric recharge to the deep hydrothermal system probably originates within or near the caldera. Relatively low fluid velocities at depth suggest that at least a significant fraction of the thermal fluid may be very old.

Sammel, E.A.; Ingebritsen, S.E.; Mariner, R.H.

1988-09-10T23:59:59.000Z

17

New results on the resistivity structure of Merapi Volcano (Indonesia), derived from 3D restricted inversion of long-offset transient electromagnetic data  

E-Print Network (OSTI)

structure of Newberry Volcano, Oregon, J. Geophys. Res. ,below 100 and 10 at Newberry Volcano (Oregon) (Fitterman etfound in boreholes at Newberry Volcano (Oregon), where the

Commer, Michael; Helwig, Stefan, L.; Hordt, Andreas; Scholl, Carsten; Tezkan, Bulent

2006-01-01T23:59:59.000Z

18

Volcanoes and Climate Effects of Aerosols  

E-Print Network (OSTI)

CONTENTS 8.1 Importance of volcanoes, natural aerosols, and anthropogenic aerosols 341 8.2 Major scientific questions and hypotheses 342 8.2.1 Stratospheric volcanic aerosols and climate 342 8.2.1.1 Source gases for stratospheric aerosols 342 8.2.1.2 Explosiveness and plume history during individual eruptions 343 8.2.1.3 Frequency of eruptions, tectonic setting, rock/ash vs. SO 2 343 8.2.1.4 Gas-to-particle conversion and removal mechanisms 343 8.2.1.5 Radiative properties and climatic effects of stratospheric aerosols 345 8.2.1.6 Needed satellite and in situ measurements 347 8.2.1.6.1 Global observations of stratospheric aerosol optical properties 347 8.2.1.6.2 Lidar measurements of aerosols 347 8.2.2 Volcanic aerosols and stratospheric ozone depletion 349 8.2.3 Climatic effects of t

Hartmann And Mouginis-Mark; Volcanoes; D. L. Hartmann; P. Mouginis-mark; G. J. Bluth; J. A. Coakley; J. Crisp; R. E. Dickinson; P. W. Francis; J. E. Hansen; P. V. Hobbs; B. L. Isacks; Y. J. Kaufman; M. D. King; W. I. Rose; S. Self; L. D. Travis

1999-01-01T23:59:59.000Z

19

Research drilling in young silicic volcanoes  

DOE Green Energy (OSTI)

Magmatic activity, and particularly silicic magmatic activity, is the fundamental process by which continental crust forms and evolves. The transport of magma from deep crustal reservoirs to the surface is a neglected but important aspect of magmatic phenomena. It encompasses problems of eruptive behavior, hydrothermal circulation, and ore deposition, and must be understood in order to properly interpret deeper processes. Drilling provides a means for determining the relationship of shallow intrusive processes to eruption processes at young volcanoes where eruptions are best understood. Drilling also provides a means for directly observing the processes of heat and mass transfer by which recently emplaced intrusions approach equilibrium with their new environment. Drilling in the Inyo Chain, a 600-year-old chain of volcanic vents in California, has shown the close relationship of silicic eruption to shallow dike emplacement, the control of eruptive style by shallow porous-flow degassing, the origin of obsidian by welding, the development of igneous zonation by viscosity segregation, and the character and size of conduits in relation to well-understood magmatic and phreatic eruptions. 36 refs., 9 figs.

Eichelberger, J.C.

1989-06-30T23:59:59.000Z

20

The Quest for Clouds and Volcanoes  

SciTech Connect

Elementary students are using the internet to experience virtual field trips to learn about areas that they are not able to experience in person. This poster presentation describes a virtual field trip taken by Mendoza Elementary School, Las Vegas, Nevada classes during the summer of 2003. The authors, who are DataStreme Learning Implementation Team members, drove from Las Vegas to Seattle for the annual DataStreme Summer Workshop. During the trip and in Seattle, the authors communicated through the internet with classrooms in Las Vegas. Weather information, pictures, and pertinent information about Seattle or the enroute area were sent to the classes each day. The students then compared the weather in Las Vegas with the weather and clouds from the communication. Fourth grade students were studying about volcanoes and were excited to hear about, and see pictures of, Mt. Shasta, Mt. Lassen, Mt. St. Helen and Mt. Rainier during the virtual field trip. Classes were able to track the route taken on a map during the virtual field trip.

Blink, F D; Blink, J A

2004-01-06T23:59:59.000Z

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Fast track article: Design of smart sensing components for volcano monitoring  

Science Conference Proceedings (OSTI)

In a volcano monitoring application, various geophysical and geochemical sensors generate continuous high-fidelity data, and there is a compelling need for real-time raw data for volcano eruption prediction research. It requires the network to support ... Keywords: Situation awareness, Time synchronization, Volcano monitoring, Wireless sensor network

Mingsen Xu; Wen-Zhan Song; Renjie Huang; Yang Peng; Behrooz Shirazi; Richard Lahusen; Aaron Kiely; Nina Peterson; Andy Ma; Lohith Anusuya-Rangappa; Michael Miceli; Devin McBride

2009-10-01T23:59:59.000Z

22

Increase of shear wave velocity before the 1998 eruption of Merapi volcano (Indonesia)  

E-Print Network (OSTI)

Increase of shear wave velocity before the 1998 eruption of Merapi volcano (Indonesia) U. Wegler,1 of the edifice of Merapi volcano (Java, Indonesia) before its eruption in 1998 by analyzing multiply scattered eruption of Merapi volcano (Indonesia), Geophys. Res. Lett., 33, L09303, doi:10.1029/2006GL025928. 1

Snieder, Roel

23

Triggering and dynamic evolution of the LUSI mud volcano, Indonesia A. Mazzini a,, H. Svensen a  

E-Print Network (OSTI)

Triggering and dynamic evolution of the LUSI mud volcano, Indonesia A. Mazzini a,, H. Svensen a , G Subroto 42, 12710, Jakarta Indonesia Received 20 March 2007; received in revised form 12 June 2007 in Indonesia. The location of the mud volcano close to magmatic volcanoes results in a high background

Manga, Michael

24

Time-Domain Electromagnetics At Haleakala Volcano Area (Thomas, 1986) |  

Open Energy Info (EERE)

Time-Domain Electromagnetics At Haleakala Volcano Time-Domain Electromagnetics At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Time-Domain Electromagnetics Activity Date Usefulness useful DOE-funding Unknown Notes Controlled-source electromagnetic soundings were found to be substantially more successful in the southwest rift than either the Schlumberger or the self-potential studies. This was largely due to the ability of time-domain methods to penetrate high-resistivity surface layers and thus to define lower-resistivity sections at depth. The results of this sounding study, which was conducted at elevations ranging from 75 to 497 m a.s.l., generally indicated moderate- to lowresistivity (6 - 7 ohm.m) sections to depths of 1 km on the lower rift zone and higher resistivities (12-16

25

Isotope Geochemistry Of Minerals And Fluids From Newberry Volcano, Oregon |  

Open Energy Info (EERE)

Isotope Geochemistry Of Minerals And Fluids From Newberry Volcano, Oregon Isotope Geochemistry Of Minerals And Fluids From Newberry Volcano, Oregon Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Isotope Geochemistry Of Minerals And Fluids From Newberry Volcano, Oregon Details Activities (2) Areas (1) Regions (0) Abstract: Isotopic compositions were determined for hydrothermal quartz, calcite, and siderite from core samples of the Newberry 2 drill hole, Oregon. The Δ15O values for these minerals decrease with increasing temperatures. The values indicate that these hydrothermal minerals precipitated in isotopic equilibrium with water currently present in the reservoirs. The Δ18O values of quartz and calcite from the andesite and basalt flows (700-932 m) have isotopic values which require that the equilibrated water Δ18O values increase slightly (- 11.3 to -9.2‰) with

26

Definition: Mudpots, Mud Pools, or Mud Volcanoes | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Mudpots, Mud Pools, or Mud Volcanoes Jump to: navigation, search Dictionary.png Mudpots, Mud Pools, or Mud Volcanoes A kind of hot spring or fumarole with limited water causing a bubbling pool with a consistency of mud or clay. View on Wikipedia Wikipedia Definition A mudpot - or mud pool - is a sort of acidic hot spring, or fumarole, with limited water. It usually takes the form of a pool of bubbling mud. The acid and microorganisms decompose surrounding rock into clay and mud. Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Mudpots,_Mud_Pools,_or_Mud_Volcanoes&oldid=684824" Category:

27

New Model of Earth's Interior Reveals Clues to Hotspot Volcanoes  

NLE Websites -- All DOE Office Websites (Extended Search)

New Model of New Model of Earth's Interior Reveals Clues to Hotspot Volcanoes New Model of Earth's Interior Reveals Clues to Hotspot Volcanoes October 29, 2013 | Tags: Basic Energy Sciences (BES), Geosciences, Hopper Contact: Linda Vu, +1 510 495 2402, lvu@lbl.gov volcanic-hotspots1.jpg This 3D view of the top 1,000 kilometers of Earth's mantle beneath the central Pacific shows the relationship between seismically-slow "plumes" and channels imaged in the UC Berkeley study. Green cones on the ocean floor mark islands associated with "hotspot" volcanoes, such as Hawaii and Tahiti. (Image courtesy of Berkeley Seismological Laboratory, UC Berkeley) Using supercomputers at the Department of Energy's National Energy Research Scientific Computing Center (NERSC), scientists have detected

28

A Strontium Isotopic Study Of Newberry Volcano, Central Oregon- Structural  

Open Energy Info (EERE)

Strontium Isotopic Study Of Newberry Volcano, Central Oregon- Structural Strontium Isotopic Study Of Newberry Volcano, Central Oregon- Structural And Thermal Implications Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Strontium Isotopic Study Of Newberry Volcano, Central Oregon- Structural And Thermal Implications Details Activities (2) Areas (1) Regions (0) Abstract: Ratios of 87Sr/86Sr were determined in twenty-seven basaltic rocks from Newberry. These ratios range from 0.70330 to 0.70414; most fall between 0.7035 and 0.7038. Covariance of Al2O3/FeO* ratio, TiO2 content, and Th content with 87Sr/86Sr suggests that some isotopic ratios reflect shallow crustal contamination, but the data also suggest that two mantle sources, a prominent one at 0.7036 and a less-prominent one at 0.7033 or less, are represented. The hypothesis of crustal contamination is supported

29

Newberry Volcano EGS Demonstration Geothermal Project | Open Energy  

Open Energy Info (EERE)

Volcano EGS Demonstration Geothermal Project Volcano EGS Demonstration Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Newberry Volcano EGS Demonstration Project Type / Topic 1 Recovery Act: Enhanced Geothermal System Demonstrations Project Type / Topic 2 EGS Demonstration Project Description The project will demonstrate EGS power generation from the Newberry Known Geothermal Resource Area ("Newberry"). Four deep, high temperature, very low permeability, production-size wells have been completed at Newberry, including two currently owned by Davenport. The Newberry project site exemplifies unparalleled EGS potential in the United States, with a large, high-temperature, conductive thermal anomaly yielding wells with permeability orders of magnitude less than conventional hydrothermal wells.

30

Fidelity and yield in a volcano monitoring sensor network  

Science Conference Proceedings (OSTI)

We present a science-centric evaluation of a 19-day sensor network deployment at Reventador, an active volcano in Ecuador. Each of the 16 sensors continuously sampled seismic and acoustic data at 100 Hz. Nodes used an event-detection algorithm to trigger ...

Geoff Werner-Allen; Konrad Lorincz; Jeff Johnson; Jonathan Lees; Matt Welsh

2006-11-01T23:59:59.000Z

31

Search for shallow magma accumulations at Augustine Volcano  

DOE Green Energy (OSTI)

A search was made for shallow magma accumulations beneath Augustine Volcano using primarily three geophysical techniques: (1) temperature and heat flow measurements, (2) active and passive seismic refraction, and (3) three-dimensional modeling of aeromagnetic data. With these studies it was hoped to gain insight into the interval structure of Augustine Volcano, to delineate, if possible, the size and shape of near surface magma bodies and to assess the potential of the volcano as a natural laboratory for hot rock and magma geothermal energy research. Augustine was chosen because it is a very young and very active volcano with several historic eruptions in 1812, 1883, 1935, 1964/64. One of the main targets for the geophysical studies was a summit lava dome of about 0.05 km/sup 3/ volume, extruded in 1963/64 and suspected to still contain considerable residual heat, perhaps be still partially molten years after its intrusion. Five months after the field work in 1975 this dome was exploded in January 1976. One month later, a hot (about 650 to 800/sup 0/C) viscous dome was intruded into the January summit crater.

Kienle, J.; Lalla, D.J.; Pearson, C.F.; Barrett, S.A.

1979-05-01T23:59:59.000Z

32

Deploying a Wireless Sensor Network on an Active Volcano  

Science Conference Proceedings (OSTI)

Augmenting heavy and power-hungry data collection equipment with lighter, smaller wireless sensor network nodes leads to faster, larger deployments. Arrays comprising dozens of wireless sensor nodes are now possible, allowing scientific studies that ... Keywords: wireless sensor networks, sensor network applications, sensor network nodes, volcano research

Geoffrey Werner-Allen; Konrad Lorincz; Matt Welsh; Omar Marcillo; Jeff Johnson; Mario Ruiz; Jonathan Lees

2006-03-01T23:59:59.000Z

33

Analysis Of Multiple Scattering At Vesuvius Volcano, Italy, Using Data Of  

Open Energy Info (EERE)

Scattering At Vesuvius Volcano, Italy, Using Data Of Scattering At Vesuvius Volcano, Italy, Using Data Of The Tomoves Active Seismic Experiment Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Analysis Of Multiple Scattering At Vesuvius Volcano, Italy, Using Data Of The Tomoves Active Seismic Experiment Details Activities (0) Areas (0) Regions (0) Abstract: Data from the TomoVes active seismic experiment are used to study scattering effects in the shallow heterogeneous structure of Vesuvius volcano. Seismograms from shots located on the volcano itself are characterised by spindle-like envelopes, small or missing P-onsets, missing S-onsets, and long codas. Seismograms from shots in the surroundings of the volcano, on the contrary, show clear and impulsive P- and S-onsets and short codas. The different shapes of the envelopes can be explained by

34

A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano,  

Open Energy Info (EERE)

A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library == A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, HawaiiThesis/Dissertation == Author Catherine King Skokan Organization Colorado School of Mines Published Publisher Not Provided, 1974 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, Hawaii Citation [[Citation::Catherine King Skokan. 1974. A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano, Hawaii []. [ (!) ]: Colorado School of Mines.]] Retrieved from "http://en.openei.org/w/index.php?title=A_Time-Domain_Electromagnetic_Survey_of_the_East_Rift_Zone_Kilauea_Volcano,_Hawaii&oldid=682585"

35

Summary of Pu u O o - Kupaianaha Eruption, Kilauea Volcano, Hawaii | Open  

Open Energy Info (EERE)

Summary of Pu u O o - Kupaianaha Eruption, Kilauea Volcano, Hawaii Summary of Pu u O o - Kupaianaha Eruption, Kilauea Volcano, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Summary of Pu_u _O_o - Kupaianaha Eruption, Kilauea Volcano, Hawaii Published USGS, Date Not Provided DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Summary of Pu_u _O_o - Kupaianaha Eruption, Kilauea Volcano, Hawaii Citation Summary of Pu_u _O_o - Kupaianaha Eruption, Kilauea Volcano, Hawaii [Internet]. 2012. USGS. [cited 06/26/2013]. Available from: http://hvo.wr.usgs.gov/kilauea/summary/ Retrieved from "http://en.openei.org/w/index.php?title=Summary_of_Pu_u_O_o_-_Kupaianaha_Eruption,_Kilauea_Volcano,_Hawaii&oldid=682513" Categories: References Uncited References

36

Seismic interpretation and classification of mud volcanoes of the South Caspian Basin, offshore Azerbaijan.  

E-Print Network (OSTI)

Understanding the nature of mud volcanism, mechanisms of formation, types of eruptions and their relationship to the hydrocarbon systems provides important information about subsurface conditions and geological processes within the South Caspian Basin. A 2D seismic grid in southeastern offshore Azerbaijan is used to define the areal distribution of mud volcanoes and to make a classification of the mud volcanoes based on characteristic seismic features. As a result detailed database for each determined mud volcano is constructed. Analysis of different parameters from this database shows that there is a high concentration of mud volcanoes at the southern part of the study area. It is coincides with the distribution of the subsurface structures within the basin. Mud volcanoes with low relief (several tens of meters) are mainly concentrated in the northeast. Conversely, mud volcanoes with large vertical relief (greater than 200 m) are clustered in the southwest part of the basin. Mud volcano development in the South Caspian Basin is generally linked to faults, which in some instances are detached at the basement level. By using interpreted seismic surfaces it is possible to determine relative time of mud flows from the mud volcanoes. Timing of mud flows reveals to the actual activity of the mud volcanoes and it gives valuable information about possible mechanism of mud volcanism within the South Caspian Basin. Previous studies of the onshore mud volcanoes in Azerbaijan and the results from current work conclude that mud volcano formation within the South Caspian Basin is mainly controlled by tectonic forces and overpressured sediments. Mud volcano activity is not always related to the Maykop organic reach shale succession. It can occur at shallow depths by pressure breakthrough from any stratigraphic zone.

Yusifov, Mehdi Zahid

2004-08-01T23:59:59.000Z

37

High resolution seismic attenuation tomography at Medicine Lake Volcano, California  

DOE Green Energy (OSTI)

Medicine Lake Volcano, a broad shield volcano about 50km east of Mount Shasta in northern California, produced rhylotic eruptions as recently as 400 years ago. Because of this recent activity it is of considerable interest to producers of geothermal energy. In a joint project sponsored by the Geothermal Research Program of the USGS and the Division of Geothermal and Hydropower Division of the US-DOE, the USGS and LLNL conducted an active seismic experiment designed to explore the area beneath and around the caldera. The experiment of eight explosions detonated in a 50 km radius circle around the volcano recorded on a 11 x 15 km grid of 140 seismographs. The travel time data from the experiment have been inverted for structure and are presented elsewhere in this volume. In this paper we present the results of an inversion for 1/Q structure using t* data in a modified Aki inversion scheme. Although the data are noisy, we find that in general attenuative zones correlate with low velocity zones. In particular, we observe a high 1/Q zone roughly in the center of the caldera at 4 km depth in between two large recent dacite flows. This zone could represent the still molten or partially molten source of the flows.

Zucca, J.J.; Kasameyer, P.W.

1987-07-10T23:59:59.000Z

38

Gas Flux Sampling At Haleakala Volcano Area (Thomas, 1986) | Open Energy  

Open Energy Info (EERE)

Gas Flux Sampling At Haleakala Volcano Area (Thomas, 1986) Gas Flux Sampling At Haleakala Volcano Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Gas Flux Sampling Activity Date Usefulness useful DOE-funding Unknown Notes The field survey program on the northwest rift zone consisted of soil mercury and radon emanometry surveys, groundwater temperature and chemistry studies, Schlumberger resistivity soundings and self-potential profiles. Geophysical and geochemical surveys along this rift (southwest) were limited by difficult field conditions and access limitations. The geophysical program consisted of one Schlumberger sounding, one

39

Anomalously High B-Values In The South Flank Of Kilauea Volcano...  

Open Energy Info (EERE)

High B-Values In The South Flank Of Kilauea Volcano, Hawaii- Evidence For The Distribution Of Magma Below Kilauea'S East Rift Zone Jump to: navigation, search GEOTHERMAL...

40

Stratigraphy and textural characteristics of the 198283 tephra of Galunggung volcano (Indonesia): implications  

E-Print Network (OSTI)

Stratigraphy and textural characteristics of the 1982­83 tephra of Galunggung volcano (Indonesia Orléans Cedex 2, France Abstract The Galunggung volcano in western Java (Indonesia) was the site activity, and consequently the corresponding increase in explosivity. Author Keywords: Indonesia

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Lahars Deposits Architecture and Volume in the C. Lengkong Valley at Semeru volcano, Indonesia  

E-Print Network (OSTI)

1 Lahars Deposits Architecture and Volume in the C. Lengkong Valley at Semeru volcano, Indonesia. Université Paris 1 ­ Sorbonne & Univ. Gadjah Mada (Indonesia) Laboratoire de Géographie Physique CNRS UMR Lahars at Semeru volcano, Indonesia, are an ongoing phenomenon that rapidly transports large amount

Paris-Sud XI, Université de

42

ORIGINAL PAPER El Chichon volcano, April 4, 1982: volcanic cloud history  

E-Print Network (OSTI)

ORIGINAL PAPER El Chicho´n volcano, April 4, 1982: volcanic cloud history and fine ash fallout of distal fallout samples collected soon after eruption. Although, about half of the mass of silicate from the volcano are mostly \\62 lm in diameter. The most plausible expla- nation for rapid fallout

Rose, William I.

43

Validation of Innovative Exploration Technologies for Newberry Volcano  

Open Energy Info (EERE)

Validation of Innovative Exploration Technologies for Newberry Volcano Validation of Innovative Exploration Technologies for Newberry Volcano Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Validation of Innovative Exploration Technologies for Newberry Volcano Project Type / Topic 1 Recovery Act: Geothermal Technologies Program Project Type / Topic 2 Validation of Innovative Exploration Technologies Project Description This project will implement a multi-step combination that is believed to have not been used before. This includes: identifying the geometry and the electrical resistivity associated with the pluton; locating areas of fluid movement in and around the pluton; measuring heat associated with the pluton; and looking for geochemical indications for degassing of circulating geothermal fluid. This approach applies gravity and MT surveys, although at much higher density than typically used in exploration. The plan involves using innovative patent pending, 3-D seismic geophone measurement tools developed by HiPoint Reservoir, LLC, that have not previously been used in geothermal exploration. The project also includes strategies for detecting deep degassing of geothermal fluid and using special flux measurement equipment at the temperature gradient well sites to sample for CO2 outgassing. Secondary mineral samples collected from the temperature gradient well core will be analyzed for stable carbon, oxygen and sulfur isotopes at the Southern Methodist University geochemical laboratory. X-R diffraction analyses will be used to characterize the thermal history of the cored rock. The final step will use temperature gradient data to map out the thermal characteristics across the pluton. The resulting model will be used to identify hot areas associated with the pluton that has fluid moving through fractures. One additional innovation designed into this program is multiple-use of temperature gradient drilling. The upper portion of the wells will be used for the 3-D seismic array. CO2 flux measurements will be employed during drilling of these holes, and the completed wells will provide the very valuable temperature profiles.

44

A 3D Magnetic Structure Of Izu-Oshima Volcano And Their Changes After The  

Open Energy Info (EERE)

Magnetic Structure Of Izu-Oshima Volcano And Their Changes After The Magnetic Structure Of Izu-Oshima Volcano And Their Changes After The Eruption In 1986 As Estimated From Repeated Airborne Magnetic Surveys Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A 3D Magnetic Structure Of Izu-Oshima Volcano And Their Changes After The Eruption In 1986 As Estimated From Repeated Airborne Magnetic Surveys Details Activities (0) Areas (0) Regions (0) Abstract: A 3D magnetic inversion method using a conjugate gradient method (CG method) was developed for constructing 3D magnetization models of a volcanic edifice and applied to aeromagnetic anomalies of Izu-Oshima Volcano surveyed in 1986 and in 1997. The calculated results of the 1986 data show that the volcanic edifice of Izu-Oshima Volcano has a mean magnetization intensity ranging from 10.4 to 12.1 A/m. The derived 3D

45

Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano,  

Open Energy Info (EERE)

Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano, Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library : Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano, HawaiiInfo Graphic/Map/Chart Authors Frank A. Trusdell and Richard B. Moore Published U.S. GEOLOGICAL SURVEY, 2006 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano, Hawaii Citation Frank A. Trusdell,Richard B. Moore. Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano, Hawaii. []. Place of publication not provided. U.S. GEOLOGICAL SURVEY. 2006. Available from: http://pubs.usgs.gov/imap/2614/downloads/pdf/2614map_508.pdf.

46

Survey of Potential Geothermal Exploration Sites at Newberry Volcano Deschutes County, Oregon.  

SciTech Connect

The study summarizes the current data, generates some new data, and recommends further steps which should be taken to investigate the electrical power production potential of Newberry volcano. The objective was to concentrate on data from the developable flanks of the volcano. All previous data on the geology, hydrology, and geophysics were summarized. A soil-mercury survey focused on the flanks of the volcano was conducted. Samples from 1000 km/sup 2/ of the volcano were analyzed for mercury content. All this information was utilized to evaluate (1) the likelihood of future discovery of electrical-quality geothermal fluids on the flanks, and (2) the most cost-effective means of improving the quality of available power generation estimates for the volcano. 37 figures.

Priest, George R.; Vogt, Beverly F.; Black, Gerald L.

1983-01-01T23:59:59.000Z

47

High-resolution seismic tomography of compressional wave velocity structure at Newberry Volcano, Oregon Cascade Range  

SciTech Connect

Compressional wave velocity structure is determined for the upper crust beneath Newberry Volcano, central Oregon, using a high-resolution active-source seismic-tomography method. Newberry Volcano is a bimodal shield volcano east of the axis of the Cascade Range. It is associated both with the Cascade Range and with northwest migrating silicic volcanism in southeast Oregon. High-frequency (approx.7 Hz) crustal phases, nominally Pg and a midcrustal reflected phase, travel upward through a target volume beneath Newberry Volcano to a dense array of 120 seismographs. This arrangement is limited by station spacing to 1- to 2-km resolution in the upper 5 to 6 km of the crust beneath the volcano's summit caldera. The experiment tests the hypothesis that Cascade Range volcanoes are underlain only by small magma chambers. A small low-velocity anomaly delineated abosut 3 km below the summit caldera supports this hypothesis for Newberry Volcano and is interpreted as a possible magma chamber of a few to a few tens of km/sup 3/ in volume. A ring-shaped high-velocity anomaly nearer the surface coincides with the inner mapped ring fractures of the caldera. It also coincides with a circular gravity high, and we interpret it as largely subsolidus silicic cone sheets. The presence of this anomaly and of silicic vents along the ring fractures suggests that the fractures are a likely eruption path between the small magma chamber and the surface.

Achauer, U.; Evans, J.R.; Stauber, D.A.

1988-09-10T23:59:59.000Z

48

A Numerical Model For The Dynamics Of Pyroclastic Flows At Galeras Volcano,  

Open Energy Info (EERE)

For The Dynamics Of Pyroclastic Flows At Galeras Volcano, For The Dynamics Of Pyroclastic Flows At Galeras Volcano, Colombia Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Numerical Model For The Dynamics Of Pyroclastic Flows At Galeras Volcano, Colombia Details Activities (0) Areas (0) Regions (0) Abstract: This paper presents a two-dimensional model for dilute pyroclastic flow dynamics that uses the compressible Navier-Stokes equation coupled with the Diffusion-Convection equation to take into account sedimentation. The model is applied to one of the slopes of Galeras Volcano to show: (1) the temperature evolution with the time; (2) dynamic pressure change; and (3) particle concentration along the computer domain from the eruption to the impact with a topographic barrier located more than 16 km

49

EA-1897: AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

7: AltaRock's Newberry Volcano EGS Demonstration near Bend, 7: AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon EA-1897: AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon Summary This EA evaluates the environmental impacts of a proposal to create an Enhanced Geothermal Systems (EGS) Demonstration Project involving new technology, techniques, and advanced monitoring protocols for the purpose of testing the feasibility and viability of EGS for renewable energy production. BLM is the lead agency for this EA and DOE is a cooperating agency. Public Comment Opportunities No public comment opportunities available at this time. Documents Available for Download April 5, 2012 EA-1897: Finding of No Significant Impact AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon April 5, 2012 EA-1897: Final Environmental Assessment

50

Geoelectric Studies on the East Rift, Kilauea Volcano, Hawaii Island | Open  

Open Energy Info (EERE)

Geoelectric Studies on the East Rift, Kilauea Volcano, Hawaii Island Geoelectric Studies on the East Rift, Kilauea Volcano, Hawaii Island Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Geoelectric Studies on the East Rift, Kilauea Volcano, Hawaii Island Abstract Three geophysical research organizations, working together under the auspices of the Hawaii Geothermal Project, have used several electrical and electromagnetic exploration techniques on Kilauea volcano, Hawaii to assess its geothermal resources. This volume contains four papers detailing their methods and conclusions. Keller et al. of the Colorado School of Mines used the dipole mapping and time-domain EM sounding techniques to define low resistivity areas around the summit and flanks of Kilauea. Kauahikaua and Klein of the Hawaii Institute of Geophysics then detailed the East Rift

51

Magmatic History Of The East Rift Zone Of Kilauea Volcano, Hawaii Based On  

Open Energy Info (EERE)

Magmatic History Of The East Rift Zone Of Kilauea Volcano, Hawaii Based On Magmatic History Of The East Rift Zone Of Kilauea Volcano, Hawaii Based On Drill Core From Soh 1 Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Magmatic History Of The East Rift Zone Of Kilauea Volcano, Hawaii Based On Drill Core From Soh 1 Details Activities (4) Areas (1) Regions (0) Abstract: Deep drilling has allowed for the first time an examination of most of the shield stage of a Hawaiian volcano when it is centered over the hotspot and most of its volume is produced. We determined the lithologies, ages, geochemical characteristics and accumulation rates of rocks from the continuously cored, ~1.7 km deep Scientific Observation Hole (SOH) 1, which was drilled into Kilauea's East Rift Zone. The uppermost ~750 m of this hole contain relatively unaltered subaerially quenched lavas; the lower

52

238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc  

Open Energy Info (EERE)

238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc 238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: 238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc Details Activities (0) Areas (0) Regions (0) Abstract: Activities of 238U decay series radioisotopes have been determined for both postcaldera basalts erupted between 1849 and 1974 and genetically related young precaldera dacites from Batur volcano, Bali, Sunda arc. All rocks possess (230Th/238U) = 1 within 2 sigma error indicating that little, if any, fractionation between Th and U occurred during their genesis, or in their source regions, within approximately the last 350 ka. Both the basaltic and the dacitic rocks possess (230Th/232U) ~

53

Preliminary results from an isotope hydrology study of the Kilauea Volcano  

Open Energy Info (EERE)

results from an isotope hydrology study of the Kilauea Volcano results from an isotope hydrology study of the Kilauea Volcano area, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Preliminary results from an isotope hydrology study of the Kilauea Volcano area, Hawaii Abstract Deuterium (D) content of groundwater and precipitation, and tritium content of selected groundwater samples are used to infer flow paths for ground water in the Kilauea volcano area. The spatial distribution of calculated recharge elevations and residence times for groundwater samples tends to support the idea that Kilauea's rift zones comprise leaky boundaries within the regional groundwater flow system, partly isolating the groundwater in the area bounded by the rift zones and the Pacific Ocean. The south wesr

54

Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano,  

Open Energy Info (EERE)

Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Hawaii Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Hawaii Details Activities (9) Areas (1) Regions (0) Abstract: A borehole has been drilled to a depth of 1262 m (4141 ft) beneath the summit of Kilauea volcano, on the island of Hawaii. The purpose was to test predictions made from surface-based geophysical surveys and seek evidence of a hydrothermal system over a known magma body. Nearly all rocks penetrated by the borehole are olivine basalt, with minor amounts of olivine diabase, picrite diabase and olivine-poor basalt. While the rocks are petrographically uniform, their physical properties vary widely from

55

Chemistry of spring and well waters on Kilauea Volcano, Hawaii, and  

Open Energy Info (EERE)

Chemistry of spring and well waters on Kilauea Volcano, Hawaii, and Chemistry of spring and well waters on Kilauea Volcano, Hawaii, and vicinity Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Chemistry of spring and well waters on Kilauea Volcano, Hawaii, and vicinity Abstract Published and new data for chemical and isotopic samples from wells and springson Kilauea Volcano and vicinity are presented. These data are used to understandprocesses that determine the chemistry of dilute meteoric water, mixtures with sea water,and thermal water. Data for well and spring samples of non-thermal water indicate that mixing with sea water and dissolution of rock from weathering are the major processes that determine the composition of dissolved constituents in water. Data from coastal springs demonstrate that there is a large thermal system south of the lower

56

Geological Aspects Of The 2003-2004 Eruption Of Anatahan Volcano, Northern  

Open Energy Info (EERE)

Geological Aspects Of The 2003-2004 Eruption Of Anatahan Volcano, Northern Geological Aspects Of The 2003-2004 Eruption Of Anatahan Volcano, Northern Mariana Islands Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Geological Aspects Of The 2003-2004 Eruption Of Anatahan Volcano, Northern Mariana Islands Details Activities (0) Areas (0) Regions (0) Abstract: Anatahan Volcano, Northern Mariana Islands, began erupting in May-June 2003. A series of subplinian explosive eruptions of andesite magma began at the Eastern Crater in the eastern part of the summit caldera on the evening of 10 May. Brown tephra was sent mainly westward by strong winds. Small-scale pyroclastic surges were discharged eastward outside the caldera in late May. An andesite lava dome that had once filled the inner crater was fragmented by phreatomagmatic explosions in the middle of June.

57

Magmatic History Of The East Rift Zone Of Kilauea Volcano, Hawaii...  

Open Energy Info (EERE)

Page Edit with form History Facebook icon Twitter icon Magmatic History Of The East Rift Zone Of Kilauea Volcano, Hawaii Based On Drill Core From Soh 1 Jump to: navigation,...

58

The upper crustal P-wave velocity structure of Newberry volcano, Central Oregon.  

E-Print Network (OSTI)

?? The upper-crustal seismic-velocity structure of Newberry volcano, central Oregon, is imaged using P-wave travel time tomography. The inversion combines a densely-spaced seismic line collected (more)

Beachly, Matthew William

2011-01-01T23:59:59.000Z

59

The Upper Crustal P-wave Velocity Structure of Newberry Volcano, Central Oregon.  

E-Print Network (OSTI)

??The upper-crustal seismic-velocity structure of Newberry volcano, central Oregon, is imaged using P-wave travel time tomography. The inversion combines a densely-spaced seismic line collected in (more)

Beachly, Matthew William, 1986-

2011-01-01T23:59:59.000Z

60

Nues ardentes of 22 November 1994 at Merapi volcano, Java, Indonesia E.K Abdurachmanab  

E-Print Network (OSTI)

Nuées ardentes of 22 November 1994 at Merapi volcano, Java, Indonesia E.K Abdurachmanab J Volcanological Survey of Indonesia, Jl. Diponegoro 57, Bandung 40122, Indonesia c Centre de Recherches

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Structure Of The Lower East Rift Zone Of Kilauea Volcano, Hawaii, From  

Open Energy Info (EERE)

Structure Of The Lower East Rift Zone Of Kilauea Volcano, Hawaii, From Structure Of The Lower East Rift Zone Of Kilauea Volcano, Hawaii, From Seismic And Gravity Data Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Structure Of The Lower East Rift Zone Of Kilauea Volcano, Hawaii, From Seismic And Gravity Data Details Activities (2) Areas (1) Regions (0) Abstract: Two seismic refraction surveys were carried out in 1976 and 1977 on the east rift zone of Kilauea volcano as part of an exploratory program for geothermal resources. The short traverse seismic refraction survey of January 1976 delineated the upper surface structure of the east rift, revealing velocities of 2.5 km/s under the Kalapana line and 3.1 km/s under the Leilani line beneath a surface layer of low, but variable velocity. This survey was not successful in determining the depth of the

62

Geologic evidence for a magma chamber beneath Newberry Volcano, Oregon  

SciTech Connect

At Newberry Volcano, central Oregon, more than 0.5 m.y. of magmatic activity, including caldera collapse and renewed caldera-filling volcanism, has created a structural and thermal chimney that channels magma ascent. Holocene rhyolitic eruptions (1) have been confined mainly within the caldera in an area 5 km in diameter, (2) have been very similar in chemical composition, phenocryst mineralogy, and eruptive style, and (3) have occurred as recently as 1300 years ago, with repose periods of 2000--3000 years between eruptions. Holocene basaltic andesite eruptions are widespread on the flanks but are excluded from the area of rhyolitic volcanism. Basaltic andesite in fissures at the edge of the rhyolite area has silicic inclusions and shows mixed basalt-rhyolite magma relations. These geologic relations and the high geothermal gradient that characterizes the lower part of a drill hole in the caldera (U.S. Geological Survey Newberry 2) indicate that a rhyolitic magma chamber has existed beneath the caldera throughout the Holocene. Its longevity probably is a result of intermittent underplating by basaltic magma.

Macleod, N.S.; Sherrod, D.R.

1988-09-10T23:59:59.000Z

63

Scoria Cone Construction Mechanism, Lathrop Wells Volcano, Southern Nevada  

SciTech Connect

Scoria cones are commonly assumed to have been constructed by the accumulation of ballistically-ejected clasts from discrete and relatively coarse-grained Strombolian bursts and subsequent avalanching such that the cone slopes are at or near the angle of repose for loose scoria. The cone at the hawaiitic Lathrop Wells volcano, southern Nevada, contains deposits that are consistent with the above processes during early cone-building phases; these early deposits are composed mainly of coarse lapilli and fluidal bombs and are partially welded, indicating relatively little cooling during flight. However, the bulk of the cone is comprised of relatively fine-grained (ash and lapilli), planar beds with no welding, even within a few tens of meters of the vent. This facies is consistent with deposition by direct fallout from sustained eruption columns of relatively well-fragmented material, primarily mantling cone slopes and with a lesser degree of avalanching than is commonly assumed. A laterally extensive fallout deposit (up to 20 km from the vent) is inferred to have formed contemporaneously with these later cone deposits. This additional mechanism for construction of scoria cones may also be important at other locations, particularly where the magmas are relatively high in volatile content and where conditions promote the formation of abundant microlites in the rising mafic magma.

G. Valentine; D. Krier; F. Perry; G. Heiken

2005-01-18T23:59:59.000Z

64

Observations of SO2 production and transport from Bezymianny volcano, Kamchatka using the MODerate resolution Infrared Spectroradiometer (MODIS)  

Science Conference Proceedings (OSTI)

Bezymianny volcano, Kamchatka Peninsula, Russia, is one of the most active volcanoes in the North Pacific (NOPAC) region and erupts violently on average every 6 months. We report the SO2 cloud mass, emission and transport rates for the eruption of Bezymianny ...

C. S. Kearney; K. Dean; V. J. Realmuto; I. M. Watson; J. Dehn; F. Prata

2008-11-01T23:59:59.000Z

65

Measuring Sulphur Dioxide (SO2) Emissions in October, 2010 Catastrophic Eruption from Merapi Volcano in Java, Indonesia  

E-Print Network (OSTI)

Volcano in Java, Indonesia with Ozone Monitoring Instrument (OMI) José A. Morales-Collazo Geology This paper discusses sulfur dioxide (SO2) cloud emissions from Merapi Volcano in Java, Indonesia during, Indonesia. In October 26th , 2010, a catastrophic eruption was reported from Merapi causing nearly 386

Gilbes, Fernando

66

Strike-slip faulting as a trigger mechanism for overpressure release through piercement structures. Implications for the Lusi mud volcano, Indonesia  

E-Print Network (OSTI)

. Implications for the Lusi mud volcano, Indonesia A. Mazzini a,*, A. Nermoen a , M. Krotkiewski a , Y 2009 Accepted 12 March 2009 Available online xxx Keywords: Java, Indonesia Lusi mud volcano Faulting volcano in Indonesia (Mazzini et al., 2007). Lusi became active the 29th of May 2006 on the Java Island

Podladchikov, Yuri

67

Anomalously High B-Values In The South Flank Of Kilauea Volcano, Hawaii-  

Open Energy Info (EERE)

Anomalously High B-Values In The South Flank Of Kilauea Volcano, Hawaii- Anomalously High B-Values In The South Flank Of Kilauea Volcano, Hawaii- Evidence For The Distribution Of Magma Below Kilauea'S East Rift Zone Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Anomalously High B-Values In The South Flank Of Kilauea Volcano, Hawaii- Evidence For The Distribution Of Magma Below Kilauea'S East Rift Zone Details Activities (1) Areas (1) Regions (0) Abstract: The pattern of b-value of the frequency-magnitude relation, or mean magnitude, varies little in the Kaoiki-Hilea area of Hawaii, and the b-values are normal, with b=0.8 in the top 10 km and somewhat lower values below that depth. We interpret the Kaoiki-Hilea area as relatively stable, normal Hawaiian crust. In contrast, the b-values beneath Kilauea's South

68

3-D Density Model Of Mt Etna Volcano (Southern Italy) | Open Energy  

Open Energy Info (EERE)

3-D Density Model Of Mt Etna Volcano (Southern Italy) 3-D Density Model Of Mt Etna Volcano (Southern Italy) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: 3-D Density Model Of Mt Etna Volcano (Southern Italy) Details Activities (0) Areas (0) Regions (0) Abstract: A detailed density model of Mt. Etna and its surrounding areas has been evaluated using a 3-D inversion of the gravimetric data acquired in the 1980's. Several high-density and low-density bodies are found, penetrating from shallow depths as far down as 12 km bsl. A positive correlation (in terms of location, extent, density, and velocity) is established between several anomalies of the density model and features identified in previously published seismic tomographies. A prominent high-density body extending down to 7 km bsl is recognized in the southern

69

Direct-Current Resistivity At Haleakala Volcano Area (Thomas, 1986) | Open  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Direct-Current Resistivity At Haleakala Volcano Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current Resistivity At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes The field survey program on the northwest rift zone consisted of soil mercury and radon emanometry surveys, groundwater temperature and chemistry studies, Schlumberger resistivity soundings and self-potential profiles.

70

Overview of the structure and geothermal potential of Newberry Volcano, Oregon  

SciTech Connect

Evidence from a broad range of geological and geophysical investigations of Newberry Volcano in centeral Oregon suggests the presence of a small magma body beneath the summit caldera. Drilling has encountered temperatures indicative of a hydrothermal system above the hypothesized magma body. On the basis of hydrothermal mineralogy the temperature of the hydrothermal system is at or near its maximum value, indicating that the hydrothermal system is young. Basaltic underplating is postulated to replenish the magma body. The results of interdisciplinary studies at Newberry Volcano document that young, silicic volcanism in the Cascade Range can have geothermal potential. These results should be applied with caution to the rest of the Cascade Range because of the strong influence of Basin and Range extensional tectonics on Newberry Volcano's style of volcanism.

Fitterman, D.V.

1988-09-10T23:59:59.000Z

71

GIS-based method for the environmental vulnerability assessment to volcanic ashfall at Etna Volcano  

Science Conference Proceedings (OSTI)

The response of environment to ashfall was evaluated aiming at defining the vulnerability in the areas surrounding Mt. Etna volcano, Sicily. The two utilized scenarios assume different thickness of ashfall, over distances comparable with those covered ... Keywords: Corine land cover, Environmental vulnerability, GIS, Volcanic risk

Silvia Rapicetta; Vittorio Zanon

2009-09-01T23:59:59.000Z

72

Monitoring rapid temporal changes in a volcano with coda wave interferometry, Geophys  

E-Print Network (OSTI)

[1] Multiplyscattered waves typically dominate the late part of the seismic coda in local earthquake seismograms. Small medium changes that have no detectable influence on the first arrivals are amplified by multiple scattering and may thus be readily observed in the coda. We exploit this idea using Coda Wave Interferometry to monitor temporal changes at Mount Erebus Volcano, Antarctica. Erebus is one of the few volcanoes on Earth with a longlived convecting lava lake. Large exsolved gas bubbles generate impulsive Strombolian explosions that provide a repeating seismic source of seismic energy propagating through the strongly scattering geology of the volcano. We examined these signals during a particularly active eruptive twomonth period between December, 1999 and February, 2000. Early seismograms are highly reproducible throughout this period. During the first month this is also the case for the coda. Approximately midway through this period, however, the seismic coda decorrelates rapidly over a period of several days. This indicates a rapid change in the scattering properties of the volcano, likely reflecting subtle changes in the nearsummit magma/conduit system that would not be discernible using direct or singlescattered seismic wave

Er Grt; Roel Snieder; Richard C. Aster; Philip R. Kyle

2005-01-01T23:59:59.000Z

73

Three-dimensional P velocity structure of the crust below Newberry Volcano, Oregon  

SciTech Connect

Utilizing teleseismic P residuals, we have detected a column of high P velocity material extending from within 10 km of the surface below the summit of Newberry Volcano, Oregon to midcrustal depths near 25 km. We interpret this column to be the expression of a swarm of predominantly subsolidus gabbroic sills and dikes which were intruded as the volcano was built. The high P velocities observed below the volcano severely limit the size of magma chambers which could presently exist in the crust below Newberry Volcano. Those possible include a few percent of partial melt distributed through large volumes of a mafic intrusion zone in the midcrust; a few smaller, higher melt fraction zones in the midcrust with dimensions less than 6 km and whose aggregate volume is only a few percent of enclosing volumes of 200 km/sup 3/; small magma bodies with dimensions of a few kilometers located within the upper 10 km of the crust; or a mafic, crystal-rich magma of arbitrary dimensions located in the upper few km. The low P velocities detected in the upper 4 km beneath the center of the summit caldera may be partially caused by a magma chamber in the second of these catagories.

Stauber, D.A.; Green, S.M.; Iyer, H.M.

1988-09-10T23:59:59.000Z

74

Mountain Breathing Revisitedthe Hyperventilation of a Volcano Cinder Cone  

Science Conference Proceedings (OSTI)

During 23 hours of fresh to strong winds in December 1975, air flowed rapidly and continuously out of a drill hole in the top of the summit cone of Mauna Kea volcano, Hawaii. Measurements made during this outflow indicate that the air entered the ...

Alfred H. Woodcock

1987-02-01T23:59:59.000Z

75

Long-Range Forecast Trajectories of Volcanic Ash from Redoubt Ash from Redoubt Volcano Eruptions  

Science Conference Proceedings (OSTI)

The Redoubt Volcano in Alaska began a series of eruptions on 14 December 1989. Volcanic ash was often reported to reach heights where, as it moved with the upper-level flow, it could affect aircraft operations thousands of km from the eruption. ...

Jerome L. Heffter; Barbara J. B. Stunder; Glenn D. Rolph

1990-12-01T23:59:59.000Z

76

Mount Hood volcano: phase zero study. Final report, January 1, 1977--June 30 1977  

DOE Green Energy (OSTI)

A base of earth science data was developed for an area centered on Mt. Hood Volcano as the first step in a systematic geothermal resource assessment. A comprehensive technical plan for the assessment was developed and is also described. A preliminary bibliography is included.

Hull, D.A.

1977-08-04T23:59:59.000Z

77

IESID: Automatic system for monitoring ground deformation on the Deception Island volcano (Antarctica)  

Science Conference Proceedings (OSTI)

When establishing the relative distance between two GNSS-GPS stations with sub-centimeter accuracy, it is necessary to have auxiliary data, some of which can only be collected some time after the moment of measurement. However, for monitoring highly-active ... Keywords: Antarctica, GNSS-GPS satellite geodesy, Volcano monitoring

Luis Miguel Peci; Manuel Berrocoso; RaL PEz; Alberto FernNdez-Ros; AmS De Gil

2012-11-01T23:59:59.000Z

78

Mud volcano response to the 4 April 2010 El MayorCucapah earthquake  

E-Print Network (OSTI)

.e.258 Wister fault) along the eastern edge of the Salton Sea, an area dominated by mud volcanoes and259 for irrigation and geothermal plants [Lachenbruch et al., 1985; Lynch and49 Hudnut, 2008].50 Seismically been partially successful in the areas north of the Salton Sea, but less63 effective to the south

Manga, Michael

79

Crustal structure of east central Oregon: relation between Newberry Volcano and regional crustal structure  

SciTech Connect

A 180-km-long seismic refraction transect from the eastern High Cascades, across Newberry Volcano, to the eastern High Lava Plains is used to investigate the subvolcanic crustal and upper mantle velocity structure there. Near-surface volcanic flows and sedimentary debris (1.6--4.7 km/s), ranging from 3 to 5 km in thickness, overlie subvolcanic Basin and Range structures. East and west of Newberry Volcano, the subvolcanic basement (5.6 km/s) has been downwarped, producing 5-km-deep basins. The midcrust (8- to 28-km depth) is characterized by velocities ranging from 6.1 to 6.5 km/s and varies laterally in thicknesses. The lowercrust is characterized by an unusually high velocity (about 7.4 km/s), and its geometry mirrors the subvolcanic basement geometry. The Moho is located at a depth of 37 km and represents a transition to an upper mantle velocity of 8.1 km/s. The shallow subsurface (1.2 km) beneath Newberry Volcano is characterized by high-velocity (5.6 km/s, versus 4.1 km/s for the surrounding area) intrusions and appears to be located on a basement high. Beneath the seismic fraction array at Newberry Volcano, an absence of low-velocity anomalies suggests that large silicic magma chambers do not exist in the upper crust, but apparent high attenuation of the seismic wave field may be consistent with either partial melts in small volumes, elevated crustal temperatures, and/or poor geophone-recording site coupling. The east central Oregon velocity structure is nearly identical to that of the northwestern Nevada Basin and Range and the Modoc Plateau of northeastern California, and variations in the deep crustal structure about Newberry Volcano are consistent with tectonism involving crustal underplating, melting, and extension.

Catchings, R.D.; Mooney, W.D.

1988-09-10T23:59:59.000Z

80

Detection and analysis of the volcanic clouds associated with the 18 and 28 August 2000 eruptions of Miyakejima volcano, Japan  

Science Conference Proceedings (OSTI)

Two significant eruptions occurred at Miyakejima volcano on 18 and 28 August 2000 and were detected by multiple satellite sensors. For both eruptions, the cloud can be observed with high confidence for 2 days. Using Total Ozone Mapping Spectrometer (TOMS), ...

E. B. Mccarthy; G. J. S. Bluth; I. M. Watson; A. Tupper

2008-11-01T23:59:59.000Z

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81

Experiences from near-real-time satellite-based volcano monitoring in Central America: case studies at Fuego, Guatemala  

Science Conference Proceedings (OSTI)

Over the past decade, remote sensing has been used increasingly in the study of active volcanoes and their associated hazards. Ground-based remote sensing techniques, such as those aimed at the analysis of volcanic gases or fumarole temperatures, are ...

P. W. Webley; M. J. Wooster; W. Strauch; J. A. Saballos; K. Dill; P. Stephenson; J. Stephenson; R. Escobar Wolf; O. Matias

2008-11-01T23:59:59.000Z

82

Prospecting for Hydrothermal Vents Using Moored Current and Temperature Data: Axial Volcano on the Juan de Fuca Ridge, Northeast Pacific  

Science Conference Proceedings (OSTI)

Tidal and inertial currents and profuse hydrothermal discharge at recently erupted Axial Volcano, Juan de Fuca Ridge, cause relatively large and rapid temperature (T) changes in the near-bottom water column. Measurements show short-term T ...

J. W. Lavelle; M. A. Wetzler; E. T. Baker; R. W. Embley

2001-03-01T23:59:59.000Z

83

Direct-Current Resistivity Survey At Haleakala Volcano Area (Thomas, 1986)  

Open Energy Info (EERE)

Direct-Current Resistivity Survey At Haleakala Direct-Current Resistivity Survey At Haleakala Volcano Area (Thomas, 1986) Exploration Activity Details Location Haleakala Volcano Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes The field survey program on the northwest rift zone consisted of soil mercury and radon emanometry surveys, groundwater temperature and chemistry studies, Schlumberger resistivity soundings and self-potential profiles. Geophysical and geochemical surveys along this rift (southwest) were limited by difficult field conditions and access limitations. The geophysical program consisted of one Schlumberger sounding, one self-potential profile and one controlled-source electromagnetic sounding. The geochemical data collected included a reconnaissance soil mercury and

84

Magnetic structure of Loihi Seamount, an active hotspot volcano in the Hawaiian Island chain  

E-Print Network (OSTI)

The use of geophysical techniques to image the interiors of active volcanoes can provide a better understanding of their structure and plumbing. The need for such information is especially critical for undersea volcanoes, whose environment makes them difficult to investigate. Because undersea volcanoes are made up of highly magnetic basaltic rock, it is possible to use variations in the magnetic field to explore the internal structure of such edifices. This study combines magnetic survey data from 12 research cruises to make a magnetic anomaly map of volcanically active Loihi, located in the Hawaiian Island chain. NRM intensities and susceptibility measurements were measured from recovered rock samples and suggest that magnetic properties of Loihi are widely varied (NRM intensities range from 1-157 A/m and susceptibilities from 1.26 x 10-3 to 3.62 x 10-2 S.I.). The average NRM intensity is 26 A/m. The size and strength of magnetic source bodies were determined by using various modeling techniques. A strongly magnetized shield can explain most of the anomaly with a large nonmagnetic zone inside, beneath the summit. Prominent magnetic highs are located along Loihi's north and south rift zone dikes and modeling solutions suggest strongly magnetized source bodies in these areas as well as a thin, magnetic layer atop the nonmagnetic zone. The strong magnetic anomalies found along the volcano's rift zones cannot be readily attributed to recent lava flows at the surface. Instead, the source bodies must continue several kilometers in depth to give reasonable magnetization values and are interpreted as dike intrusions. Nonmagnetic anomalies at the summit and south of the summit suggest the presence of a magma system. The model solution suggests Loihi is an inhomogeneously magnetized seamount with highly magnetic dike intrusions along the rift zones with a nonmagnetic body at its center overlain with a magnetic layer.

Lamarche, Amy J.

2003-12-01T23:59:59.000Z

85

Core hole drilling and the ''rain current'' phenomenon at Newberry Volcano, Oregon  

SciTech Connect

Two core holes have been completed on the flanks of Newberry Volcano, Oregon. Core hole Geo N-1 has a heat flow of 180 mW m/sup -2/, reflecting subsurface temperatures, sufficient for commerical exploitation of geothermally generated electricity. GEO N-3, which has a heat flow of 86 mW m/sup -2/, is less encouraging. We emphasize the ''rain curtain'' effect with the hope that a detailed discussion of this phenomenon at two distinct localities will lead to a better understanding of the physical processes in operation. Cole hole GEO N-1 was cored to a depth of 1387 m at a site located 9.3 km south of the center of the volcano. Core hole GEO N-3 was cored to a depth of 1220 m at a site located 12.6 km north of the center of the volcano. Both core holes penetrated interbedded pyroclastic lava flows and lithic tuffs ranging in composition from basalt to rhyolite, basaltic andesite being the most common rock type. Potassium-argon age dates range up to 2 Ma. Caving and sloughing were encountered in both core holes at depths near the regional water table. Both core holes penetrate three distinct thermal regimes. The uppermost regime is isothemal at mean air temperature down to about 900-1000 m (the rain curtain).

Swanberg, C.A.; Walkey, W.C.; Combs, J.

1988-09-10T23:59:59.000Z

86

Application of scientific core drilling to geothermal exploration: Platanares, Honduras and Tecuamburro Volcano, Guatemala, Central America  

Science Conference Proceedings (OSTI)

Our efforts in Honduras and Guatemala were part of the Central America Energy Resource Project (CAERP) funded by the United States Agency for International Development (AID). Exploration core drilling operations at the Platanares, Honduras and Tecuamburro Volcano, Guatemala sites were part of a geothermal assessment for the national utility companies of these countries to locate and evaluate their geothermal resources for electrical power generation. In Honduras, country-wide assessment of all thermal areas determined that Platanares was the site with the greatest geothermal potential. In late 1986 to middle 1987, three slim core holes were drilled at Platanares to a maximum depth of 680 m and a maximum temperature of 165{degree}C. The objectives were to obtain information on the geothermal gradient, hydrothermal alterations, fracturing, and possible inflows of hydrothermal fluids. Two holes produced copious amounts of water under artesian conditions and a total of 8 MW(t) of energy. Geothermal investigations in Guatemala focused on the Tecuamburro Volcano geothermal site. The results of surface geological, volcanological, hydrogeochemical, and geophysical studies at Tecuamburro Volcano indicated a substantial shallow heat source. In early 1990 we drilled one core hole, TCB-1, to 808 m depth. The measured bottom hole temperature was 238{degree}C. Although the borehole did not flow, in-situ samples indicate the hole is completed in a vapor-zone above a probable 300{degree}C geothermal reservoir.

Goff, S.J.; Goff, F.E.; Heiken, G.H. [Los Alamos National Lab., NM (United States); Duffield, W.A. [Geological Survey, Flagstaff, AZ (United States); Janik, C.J. [Geological Survey, Menlo Park, CA (United States)

1994-04-01T23:59:59.000Z

87

Tectonic versus volcanic origin of the summit depression at Medicine Lake Volcano, California  

SciTech Connect

Medicine Lake Volcano is a Quaternary shield volcano located in a tectonically complex and active zone at the transition between the Basin and Range Province and the Cascade Range of the Pacific Province. The volcano is topped by a 7x12 km elliptical depression surrounded by a discontinuous constructional ring of basaltic to rhyolitic lava flows. This thesis explores the possibility that the depression may have formed due to regional extension (rift basin) or dextral shear (pull-apart basin) rather than through caldera collapse and examines the relationship between regional tectonics and localized volcanism. Existing data consisting of temperature and magnetotelluric surveys, alteration mineral studies, and core logging were compiled and supplemented with additional core logging, field observations, and fault striae studies in paleomagnetically oriented core samples. These results were then synthesized with regional fault data from existing maps and databases. Faulting patterns near the caldera, extension directions derived from fault striae P and T axes, and three-dimensional temperature and alteration mineral models are consistent with slip across arcuate ring faults related to magma chamber deflation during flank eruptions and/or a pyroclastic eruption at about 180 ka. These results are not consistent with a rift or pull-apart basin. Limited subsidence can be attributed to the relatively small volume of ash-flow tuff released by the only known major pyroclastic eruption and is inconsistent with the observed topographic relief. The additional relief can be explained by constructional volcanism. Striae from unoriented and oriented core, augmented by striae measurements in outcrop suggest that Walker Lane dextral shear, which can be reasonably projected from the southeast, has probably propagated into the Medicine Lake area. Most volcanic vents across Medicine Lake Volcano strike north-south, suggesting they are controlled by crustal weakness related to Basin and Range extension. Interaction of dextral shear, Basin and Range extension, and the zone of crustal weakness expressed as the Mount Shasta-Medicine Lake volcanic highland controlled the location and initiation of Medicine Lake Volcano at about 500 ka.

Mark Leon Gwynn

2010-05-01T23:59:59.000Z

88

The epidemiology and etiology of visitor injuries in Hawaii Volcanoes National Park  

E-Print Network (OSTI)

The U.S. National Park Service has recognized visitor health and safety as an important component of protected area management. Despite this recognition, research investigating visitor health and safety issues in national parks is lacking. In order to improve the understanding of the factors contributing to visitor injuries, the purpose of this study was to: 1) identify the distribution of injuries in Hawaii Volcanoes National Park, 2) examine the relationship between visitor factors and the severity of visitor injuries in Hawaii Volcanoes National Park, 3) examine the relationship between environmental factors and the severity of visitor injuries in Hawaii Volcanoes National Park, and 4) determine the effectiveness of sign placement and indirect supervision on controlling visitor injuries in the park. Data for this study consisted of 5,947 incident reports recorded in Hawaii Volcanoes between January 1, 1993 and December 31, 2002. The results found that even though 26% of the injuries in the park occur in frontcountry regions, 53% of all visitor injuries took place at the Eruption Site. As well, 130 of the 268 (49%) fatalities occurred on roadway environments and 1,179 of the 1,698 (69%) severe injuries occurred at the Eruption Site. Logistic regression analysis used to examine the relationship between visitor factors and injury severity in Hawaii Volcanoes National Park found that female visitors, visitors wearing minimal footwear and clothing, and visitors carrying no flashlight and minimal drinking water are factors significantly associated with fatal injuries. Visitors wearing minimal footwear and clothing, visitors carrying no flashlight and minimal drinking water, visitors entering restricted areas, visitors with pre-existing health conditions, and visitors aged 50-59 years of age are factors significantly associated with severe injuries. Logistic regression analysis found no built environment factor to be significantly associated with visitor fatalities or severe injuries. However, darkness and rugged terrain were significantly associated with visitor fatalities. Chi-square tests of independence found the combined treatment of sign placement and indirect supervision to have no effect on reducing the frequency and severity of visitor injuries at the Eruption Site.

Heggie, Travis Wade

2005-12-01T23:59:59.000Z

89

TECTONIC VERSUS VOLCANIC ORIGIN OF THE SUMMIT DEPRESSION AT MEDICINE LAKE VOLCANO, CALIFORNIA  

DOE Green Energy (OSTI)

Medicine Lake Volcano is a Quaternary shield volcano located in a tectonically complex and active zone at the transition between the Basin and Range Province and the Cascade Range of the Pacific Province. The volcano is topped by a 7x12 km elliptical depression surrounded by a discontinuous constructional ring of basaltic to rhyolitic lava flows. This thesis explores the possibility that the depression may have formed due to regional extension (rift basin) or dextral shear (pull-apart basin) rather than through caldera collapse and examines the relationship between regional tectonics and localized volcanism. Existing data consisting of temperature and magnetotelluric surveys, alteration mineral studies, and core logging were compiled and supplemented with additional core logging, field observations, and fault striae studies in paleomagnetically oriented core samples. These results were then synthesized with regional fault data from existing maps and databases. Faulting patterns near the caldera, extension directions derived from fault striae P and T axes, and three-dimensional temperature and alteration mineral models are consistent with slip across arcuate ring faults related to magma chamber deflation during flank eruptions and/or a pyroclastic eruption at about 180 ka. These results are not consistent with a rift or pull-apart basin. Limited subsidence can be attributed to the relatively small volume of ash-flow tuff released by the only known major pyroclastic eruption and is inconsistent with the observed topographic relief. The additional relief can be explained by constructional volcanism. Striae from unoriented and oriented core, augmented by striae measurements in outcrop suggest that Walker Lane dextral shear, which can be reasonably projected from the southeast, has probably propagated into the Medicine Lake area. Most volcanic vents across Medicine Lake Volcano strike north-south, suggesting they are controlled by crustal weakness related to Basin and Range extension. Interaction of dextral shear, Basin and Range extension, and the zone of crustal weakness expressed as the Mount Shasta-Medicine Lake volcanic highland controlled the location and initiation of Medicine Lake Volcano at about 500 ka.

Mark Leon Gwynn

2010-05-01T23:59:59.000Z

90

Three-dimensional p-velocity structure of the summit caldera of Newberry Volcano, Oregon  

DOE Green Energy (OSTI)

A three-dimensional high-resolution seismic study of the summit caldera of Newberry Volcano, Oregon, was conducted by the US Geological Survey using an adaptation of the method applied by Mercessian et al. (1984). Preliminary interpretation of the traveltime residuals reveals a ring of high P-velocity material coinciding with the inner ring fault system of the caldera in the upper 2 km. A zone of lower P velocities extends deeper than 2 km in the center of the caldera. 9 refs., 5 figs.

Stauber, D.A.; Iyer, N.M.; Mooney, W.D.; Dawson, P.B.

1985-01-01T23:59:59.000Z

91

Investigation of the conductivity distribution in the vicinity of a cascade volcano  

DOE Green Energy (OSTI)

Magnetotelluric and telluric data were acquired in the vicinity of Mount Hood Oregon as part of a multidisciplinary exploration program to evaluate the geothermal potential of this stratocone volcano. Eleven field components were acquired simultaneously over the frequency band of 50. to .001 hertz. These data consisted of one five component magnetotelluric base site, two sets of two component remote electric field measurements and one set of remote horizontal magnetic field measurements. The data were recorded digitally in the field and processed later using the remote electric and magnetic signals to obtain unbiased tensor impedance and geomagnetic transfer function (tipper) estimates.

Mozley, E.C.

1982-11-01T23:59:59.000Z

92

Results of geothermal gradient core hole TCB-1, Tecuamburro volcano geothermal site, Guatemala, Central America  

DOE Green Energy (OSTI)

Results of geological, volcanological, hydrogeochemical, and geophysical field studies conducted in 1988 and 1989 at the Tecuamburro volcano geothermal site in Guatemala indicated that there is a substantial shallow heat source beneath the area of youngest volcanism. To obtain information on subsurface temperatures and temperature gradients, stratigraphy, hydrothermal alteration, fracturing, and possible inflows of hydrothermal fluids, a geothermal gradient core hole (TCB-1) was drilled to 808 m low on the northern flank of the Tecuamburro volcano Complex, 300 km south of a 300-m-diameter phreatic crater, Laguna Ixpaco, dated at 2,910 years. Gases from acid-sulfate springs near Laguna Ixpaco consistently yield maximum estimated subsurface temperatures of 250--300{degrees}C. The temperature versus depth curve from TCB-1 does not show isothermal conditions and the calculated thermal gradients from 500--800 m is 230{degrees}C/km. Bottom hole temperature is 238{degrees}C. Calculated heat flow values are nearly 9 heat flow units (HFU). The integration of results from the TCB-1 gradient core hole with results from field studies provides strong evidence that the Tecuamburro area holds great promise for containing a commercial geothermal resource.

Adams, A.I.; Chipera, S.; Counce, D.; Gardner, J.; Goff, S.; Goff, F.; Heiken, G.; Laughlin, A.W.; Musgrave, J.; Trujillo, P.E. Jr. (Los Alamos National Lab., NM (United States)); Aycinena, S.; Martinelli, L. (Swissboring Overseas Corp. Ltd., Guatemala City (Guatemala)); Castaneda, O.; Revolorio, M.; Roldan, A. (Unidad de Desarrollo Geotermico, Guatemala City (Guatemala). Inst. Nacional de Electrificacion); D

1992-02-01T23:59:59.000Z

93

An evaluation of the geothermal potential of the Tecuamburro Volcano area of Guatemala  

DOE Green Energy (OSTI)

Radiometric ages indicate that the Tecuamburro Volcano and three adjacent lava domes grew during the last 38,300 years, and that a 360-m-wide phreatic crater, Laguna Ixpaco, was formed near the base of these domes about 2900 years ago. Laguna Ixpaco is located within the Chupadero crater, from which pyroxene pumice deposits were erupted 38,300 years ago. Thus, the likelihood is great for a partly molten or solid-but-still-hot near-surface intrusion beneath the area. Fumaroles and hot springs issue locally from the Tecuamburro volcanic complex and near Laguna Ixpaco. Analyses of gas and fluid samples from these and other nearby thermal manifestations yield chemical-geothermometer temperatures of about 150{degree} to 300{degree}C, with the highest temperatures at Ixpaco. The existence of a commercial-grade geothermal reservoir beneath the Ixpaco area seems likely. 84 refs., 70 figs., 12 tabs.

Heiken, G.; Duffield, W. (eds.)

1990-09-01T23:59:59.000Z

94

New gamma-ray observatory begins operations at Sierra Negra volcano in the  

NLE Websites -- All DOE Office Websites (Extended Search)

New gamma-ray observatory begins operations New gamma-ray observatory begins operations New gamma-ray observatory begins operations at Sierra Negra volcano in the state of Puebla, Mexico The High-Altitude Water Cherenkov Gamma Ray Observatory has begun formal operations at its site in Mexico. August 21, 2013 The HAWC Observatory taken in August 2013 from the summit of Sierra Negra. The image has been digitally altered to show HAWC as it will appear when construction is complete in 2014. The 111 Cherenkov detectors currently installed (100 Cherenkov detectors in operation) are colored white and located in the upper right quadrant of the array. The HAWC Observatory taken in August 2013 from the summit of Sierra Negra. The image has been digitally altered to show HAWC as it will appear when construction is complete in 2014. The 111 Cherenkov detectors currently

95

SMALL-VOLUME BASALTIC VOLCANOES: ERUPTIVE PRODUCTS AND PROCESSES, AND POST-ERUPTIVE GEOMORPHIC EVOLUTION IN CRATER FLAT (PLEISTOCENE), SOUTHERN NEVADA  

SciTech Connect

Five Pleistocene basaltic volcanoes in Crater Flat (southern Nevada) demonstrate the complexity of eruption processes associated with small-volume basalts and the effects of initial emplacement characteristics on post-eruptive geomorphic evolution of the volcanic surfaces. The volcanoes record eruptive processes in their pyroclastic facies ranging from ''classical'' Strombolian mechanisms to, potentially, violent Strombolian mechanisms. Cone growth was accompanied, and sometimes disrupted, by effusion of lavas from the bases of cones. Pyroclastic cones were built upon a gently southward-sloping surface and were prone to failure of their down-slope (southern) flanks. Early lavas flowed primarily southward and, at Red and Black Cone volcanoes, carried abundant rafts of cone material on the tops of the flows. These resulting early lava fields eventually built platforms such that later flows erupted from the eastern (at Red Cone) and northern (at Black Cone) bases of the cones. Three major surface features--scoria cones, lava fields with abundant rafts of pyroclastic material, and lava fields with little or no pyroclastic material--experienced different post-eruptive surficial processes. Contrary to previous interpretations, we argue that the Pleistocene Crater Flat volcanoes are monogenetic, each having formed in a single eruptive episode lasting months to a few years, and with all eruptive products having emanated from the area of the volcanoes main cones rather than from scattered vents. Geochemical variations within the volcanoes must be interpreted within a monogenetic framework, which implies preservation of magma source heterogeneities through ascent and eruption of the magmas.

G.A. Valentine; F.V. Perry; D. Krier; G.N. Keating; R.E. Kelley; A.H. Cogbill

2006-04-04T23:59:59.000Z

96

Chemistry of spring and well waters on Kilauea Volcano, Hawaii, and vicinity  

DOE Green Energy (OSTI)

Published and new data for chemical and isotopic samples from wells and springs on Kilauea Volcano and vicinity are presented. These data are used to understand processes that determine the chemistry of dilute meteoric water, mixtures with sea water, and thermal water. Data for well and spring samples of non-thermal water indicate that mixing with sea water and dissolution of rock from weathering are the major processes that determine the composition of dissolved constituents in water. Data from coastal springs demonstrate that there is a large thermal system south of the lower east rift of Kilauea. Samples of thermal water from shallow wells in the lower east rift and vicinity have rather variable chemistry indicating that a number of processes operate in the near surface. Water sampled from the available deep wells is different in composition from the shallow thermal water, indicating that generally there is not a significant component of deep water in the shallow wells. Data for samples from available deep wells show significant gradients in chemistry and steam content of the reservoir fluid. These gradients are interpreted to indicate that the reservoir tapped by the existing wells is an evolving vapor-dominated system.

Janik, C.J.; Nathenson, M.; Scholl, M.A.

1994-12-31T23:59:59.000Z

97

Tecuamburro Volcano, Guatemala geothermal gradient core hole drilling, operations, and preliminary results  

SciTech Connect

A geothermal gradient core hole (TCB-1) was drilled to a depth of 700+ m at the Tecuamburro geothermal site, Guatemala during February and March, 1990. The core hole is located low on the northern flank of the Tecuamburro Volcano complex. Preliminary analysis of cores (>98% core recovery) indicates that the hydrothermal system may be centered in the 4-km-diameter Chupadero Crater, which has been proposed as the source of pyroxene pumice deposits in the Tecuamburro area. TCB-1 is located 300 m south of a 300-m-diameter phreatic crater, Laguna Ixpaco; the core hole penetrates the thin edge of a tuff ring surrounding Ixpaco and zones of hydrothermal brecciation within the upper 150 m may be related to the phreatic blast, dated at 2,910 {sup 14}C years. At the time of this writing, the unequilibrated temperature at a depth of 570m was 180{degree}C. Data on fracturing, permeability, hydrothermal alteration, and temperature will be presented. 3 refs., 3 figs.

Goff, S.; Heiken, G.; Goff, F.; Gardner, J. (Los Alamos National Lab., NM (USA)); Duffield, W. (Geological Survey, Flagstaff, AZ (USA)); Martinelli, L.; Aycinena, S. (Swissboring Overseas Corp. Ltd., Guatemala City (Guatemala)); Castaneda, O. (Unidad de Desarrollo Geotermico, Guatemala City (Guatemala). Inst. Nacional de Electrificacion)

1990-01-01T23:59:59.000Z

98

Hydrothermal alteration in Oregon's Newberry Volcano No. 2: fluid chemistry and secondary-mineral distribution  

SciTech Connect

Newberry 2 was drilled in the caldera floor of Newberry Volcano, Oregon, by the US Geological Survey during 1979-81. The maximum temperature measured was 265C at the bottom of the hole, 932 m below the surface. Rocks recovered fr9om the drill hole are divided into three intervals on the basis of hydrothermal alteration and mineral deposition: (1) 0-290 m consists of unaltered, largely glassy volcanic material, with present temperatures ranging from 20 to 40C; (2) 290-700 m consists of permeable tuff layers, tuff breccia units, and brecciated and fractured rhyodacitic to dacitic lava flows, with temperatures ranging from 40 to 100C; (3) 700-932 m consists of impermeable andesitic to basaltic lava flows that generally show little effect of alteration, interlayered with permeable hydrothermally altered flow breccia, with temperatures gradually increasing from 100 at 700 m to 265C at 932 m. Hydrothermal alteration throughout the system is controlled by rock permeability, temperature, composition of geothermal fluids, and composition and crystallinity of host rocks. Rock alteration consists mainly of replacement of glass by clay minerals and, locally, zeolites, partial replacement of plagioclase phenocrysts by calcite +/- epidote +/- illite, and whole-rock leaching adjacent to fluids channels. Open-space deposition of hydrothermal minerals in fractures, vesicles, and interbreccia pore space is far more abundant than replacement. A cooling shallow convection system in the upper 700 m is indicated by the occurrence of hydrothermal minerals that were deposited in a slightly higher temperature environment than presently exists. Below 700 m, the heat flow is conductive, and fluid flow is controlled by horizontal lava flows. Homogenization temperatures of secondary quartz fluid inclusions were as high as 370C.

Keith, T.E.C.; Mariner, R.H.; Bargar, K.E.; Evans, W.C.; Presser, T.S.

1984-04-01T23:59:59.000Z

99

Abstract Masaya volcano (560 m a.s.l.), Nicaragua, re-sumed its degassing activity in mid-1993 with the con-  

E-Print Network (OSTI)

) to characterise the dispersion of the gas emissions around the volcano, (2) to investigate the influence dispersion of the gas plume by the north-easterly trade winds over a 80­85° sector, which is equivalent). These observations suggest that the terrain topog- raphy strongly influences gas dispersion in the Masaya area

Mucci, Alfonso

100

Cutting Costs by Locating High Production Wells: A Test of the Volcano seismic Approach to Finding ''Blind'' Resources  

DOE Green Energy (OSTI)

In the summer of 2000, Duke University and the Kenyan power generation company, KenGen, conducted a microearthquake monitoring experiment at Longonot volcano in Kenya. Longonot is one of several major late Quaternary trachyte volcanoes in the Kenya Rift. They study was aimed at developing seismic methods for locating buried hydrothermal areas in the Rift on the basis of their microearthquake activity and wave propagation effects. A comparison of microearthquake records from 4.5 Hz, 2 Hz, and broadband seismometers revealed strong high-frequency site and wave-propagation effects. The lower frequency seismometers were needed to detect and record individual phases. Two-dozen 3-component 2- Hz L22 seismographs and PASSCAL loggers were then distributed around Longonot. Recordings from this network located one seismically active area on Longonot's southwest flank. The events from this area were emergent, shallow (<3 km), small (M<1), and spatially restricted. Evidently, the hydrothermal system in this area is not currently very extensive or active. To establish the nature of the site effects, the data were analyzed using three spectral techniques that reduce source effects. The data were also compared to a simple forward model. The results show that, in certain frequency ranges, the technique of dividing the horizontal motion by the vertical motion (H/V) to remove the source fails because of non-uniform vertical amplification. Outside these frequencies, the three methods resolve the same, dominant, harmonic frequencies at a given site. In a few cases, the spectra can be fit with forward models containing low velocity surface layers. The analysis suggests that the emergent, low frequency character of the microearthquake signals is due to attenuation and scattering in the near surface ash deposits.

Eylon Shalev; Peter E. Malin; Wendy McCausland

2002-06-06T23:59:59.000Z

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Earthquake Swarm Activity Beneath the Tokaanu-Waihi Geothermal System, Lake Taupo, New Zealand  

DOE Green Energy (OSTI)

The hypocenters of 4 earthquake swarms (total of 54 events), recorded with a local network between 1986 April and 1987 January, occur within upper crustal rocks of the deeper Tokaanu-Waihi geothermal reservoir; all the events had a magnitude M{sub L} {le} 3.2. Most foci are aligned along two NW-trending basement fault structures along which young rhyodacitic extrusions can be found. The swarm activity has been interpreted in terms of injections into basement fractures of magma from deeper chambers (dyke injection swarm activity).

Hochstein, M.P.; Sherburn, S.; Tikku, J.

1995-01-01T23:59:59.000Z

102

Geochemistry, isotopic composition and origin of fluids emanating from mud volcanoes in the Copper River Basin, Alaska. Final report  

DOE Green Energy (OSTI)

Two compositionally different groups of mud volcanoes exist in the Copper River Basin: the Tolsona group which discharges Na-Ca rich, HCO/sub 3/-SO/sub 4/ poor saline waters accompanied by small amounts of gas, composed predominately of CH/sub 4/ and N/sub 2/; and the Klawasi group which discharges Ca poor, Na-HCO/sub 3/ rich saline waters accompanied by enormous amounts of CO/sub 2/. The Tolsona-type water chemistry and isotopic composition could have been produced through the following processes: dilution of original interstitial seawaters with paleo-meteoric waters, possibly during a period of uplift in the mid-Cretaceous; loss of HCO/sub 3/ and SO/sub 4/ and modification of other constituent concentrations by shale-membrane filtration; further depletion of Mg, K, HCO/sub 3/, and SO/sub 4/, and enrichment in Ca and Sr through dolomitization, hydrolysis, and clay-forming processes; and leaching of B, I, Li, and SiO/sub 2/ from marine sediments. Compared to the Tolsona waters, the Klawasi waters are strongly enriched in Li, Na, K, Mg, HCO/sub 3/, SO/sub 4/, B, SiO/sub 2/ and delta/sup 18/O and strongly depleted in Ca, Sr and D. The Klawasi wates also contain high concentrations of arsenic (10 to 48 ppM). The differences in fluid chemistry between Klawasi and Tolsona can be explained as the result of the interaction of fluids derived from a magmatic intrusion and contact decarbonation of limestone beds underlying the Klawasi area with overlying Tolsona-type formation waters.

Motyka, R.J.; Hawkins, D.B.; Poreda, R.J.; Jeffries, A.

1986-05-01T23:59:59.000Z

103

Remote monitoring of volcanic gases using passive Fourier transform spectroscopy  

SciTech Connect

Volcanic gases provide important insights on the internal workings of volcanoes and changes in their composition and total flux can warn of impending changes in a volcano`s eruptive state. In addition, volcanoes are important contributors to the earth`s atmosphere, and understanding this volcanic contribution is crucial for unraveling the effect of anthropogenic gases on the global climate. Studies of volcanic gases have long relied upon direct in situ sampling, which requires volcanologists to work on-site within a volcanic crater. In recent years, spectroscopic techniques have increasingly been employed to obtain information on volcanic gases from greater distances and thus at reduced risk. These techniques have included UV correlation spectroscopy (Cospec) for SO{sub 2} monitoring, the most widely-used technique, and infrared spectroscopy in a variety of configurations, both open- and closed-path. Francis et al. have demonstrated good results using the sun as the IR source. This solar occultation technique is quite useful, but puts rather strong restrictions on the location of instrument and is thus best suited to more accessible volcanoes. In order to maximize the flexibility and range of FTIR measurements at volcanoes, work over the last few years has emphasized techniques which utilize the strong radiance contrast between the volcanic gas plume and the sky. The authors have successfully employed these techniques at several volcanoes, including the White Island and Ruapehu volcanoes in New Zealand, the Kilauea volcano on Hawaii, and Mt. Etna in Italy. But Popocatepetl (5452 m), the recently re-awakened volcano 70 km southeast of downtown Mexico City, has provided perhaps the best examples to date of the usefulness of these techniques.

Love, S.P.; Goff, F.; Counce, D.; Schmidt, S.C. [Los Alamos National Lab., NM (United States); Siebe, C.; Delgado, H. [Univ. Nactional Autonoma de Mexico, Coyoacan (Mexico)

1999-06-01T23:59:59.000Z

104

New results on the resistivity structure of Merapi Volcano(Indonesia), derived from 3D restricted inversion of long-offsettransient electromagnetic data  

SciTech Connect

Three long-offset transient electromagnetic (LOTEM) surveyswerecarried out at the active volcano Merapi in Central Java (Indonesia)during the years 1998, 2000, and 2001. The measurements focused on thegeneral resistivity structure of the volcanic edifice at depths of 0.5-2km and the further investigation of a southside anomaly. The measurementswere insufficient for a full 3D inversion scheme, which could enable theimaging of finely discretized resistivity distributions. Therefore, astable, damped least-squares joint-inversion approach is used to optimize3D models with a limited number of parameters. The mode ls feature therealistic simulation of topography, a layered background structure, andadditional coarse 3D blocks representing conductivity anomalies.Twenty-eight LOTEM transients, comprising both horizontal and verticalcomponents of the magnetic induction time derivative, were analyzed. Inview of the few unknowns, we were able to achieve reasonable data fits.The inversion results indicate an upwelling conductor below the summit,suggesting hydrothermal activity in the central volcanic complex. Ashallow conductor due to a magma-filled chamber, at depths down to 1 kmbelow the summit, suggested by earlier seismic studies, is not indicatedby the inversion results. In conjunction with an anomalous-density model,derived from arecent gravity study, our inversion results provideinformation about the southern geological structure resulting from amajor sector collapse during the Middle Merapi period. The density modelallows to assess a porosity range andthus an estimated vertical salinityprofile to explain the high conductivities on a larger scale, extendingbeyond the foothills of Merapi.

Commer, Michael; Helwig, Stefan, L.; Hordt, Andreas; Scholl,Carsten; Tezkan, Bulent

2006-06-14T23:59:59.000Z

105

Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian...  

Open Energy Info (EERE)

(SP), CO2 soil diffuse degassing and soil temperature surveys. This complementary data set revealed the presence of an anomalous conductive body, probably related to a shallow...

106

Volcanoes and ENSO over the Past Millennium  

Science Conference Proceedings (OSTI)

The controversial claim that El Nio events might be partially caused by radiative forcing due to volcanic aerosols is reassessed. Building on the work of Mann et al., estimates of volcanic forcing over the past millennium and a climate model of ...

Julien Emile-Geay; Richard Seager; Mark A. Cane; Edward R. Cook; Gerald H. Haug

2008-07-01T23:59:59.000Z

107

Haleakala Volcano Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Well Field Information Development Area: Number of Production Wells: Number of Injection Wells: Number of Replacement Wells: Average Temperature of Geofluid: Sanyal...

108

PALEOMAGNETIC DATING OF THE CERRO PRIETO VOLCANO  

E-Print Network (OSTI)

1973, Very short period geomagnetic excursion about 18,000and HcElhinny , M. of a geomagnetic excursion 30,000 years Bof the Laschamp geomagnetic polarity event: Earth Plan. Sci.

Boer, Jelle De

2009-01-01T23:59:59.000Z

109

Jefferson Lab Science Series - Volcanoes in Virginia!  

NLE Websites -- All DOE Office Websites (Extended Search)

Dr. Elizabeth Baedke Johnson - James Madison University January 24, 2012 The recent earthquake may have you wondering what other surprises Virginia's geology may hold. Could there...

110

When mud volcanoes sleep: Insight from seep geochemistry at the Dashgil mud volcano, Azerbaijan  

E-Print Network (OSTI)

in the Songliao basin form a major part of the basin fill and are the important petroleum reservoir rocks volcanic rocks could be derived from metasomatized enriched MORB-like sources, but the Cretaceous rhyolites: geochemistry, Nd-Sr-Pb isotopes, Mesozoic, volcanic rock, Songliao basin plate in Mesozoic (e.g., Zhao et al

Svensen, Henrik

111

Geothermal Literature Review At International Geothermal Area...  

Open Energy Info (EERE)

Taupo, North Island, re: Heat Flow References G. Ranalli, L. Rybach (2005) Heat Flow, Heat Transfer And Lithosphere Rheology In Geothermal Areas- Features And Examples...

112

Misinterpretation of Electrical Resistivity Data in Geothermal...  

Open Energy Info (EERE)

Geothermal Prospecting: a Case Study from the Taupo Volcanic Zone. In: Geological and Nuclear Sciences. World Geothermal Congress 2005; 20050424; Antalya, Turkey. New Zealand:...

113

Interpretation of long-offset transient electromagnetic data from Mount Merapi, Indonesia, using a three-dimensional optimization approach  

E-Print Network (OSTI)

structure of Newberry volcano, Oregon, J. Geophys. Res. ,volcanoes, for example Newberry volcano [Fitterman et al. ,

Commer, Michael; Helwig, Stefan L.; Hordt, Andreas; Tezkan, Bulent

2004-01-01T23:59:59.000Z

114

High Resolution Aircraft Scanner Mapping of Geothermal and Volcanic Areas  

DOE Green Energy (OSTI)

High spectral resolution GEOSCAN Mkll multispectral aircraft scanner imagery has been acquired, at 3-6 m spatial resolutions, over much of the Taupo Volcanic Zone as part of continuing investigations aimed at developing remote sensing techniques for exploring and mapping geothermal and volcanic areas. This study examined the 24-band: visible, near-IR (NIR), mid-IR (MIR) and thermal-IR (TIR) imagery acquired over Waiotapu geothermal area (3 m spatial resolution) and White Island volcano (6 m resolution). Results show that color composite images composed of visible and NIR wavelengths that correspond to color infrared (CIR) photographic wavelengths can be useful for distinguishing among bare ground, water and vegetation features and, in certain cases, for mapping various vegetation types. However, combinations which include an MIR band ({approx} 2.2 {micro}m) with either visible and NIR bands, or two NIR bands, are the most powerful for mapping vegetation types, water bodies, and bare and hydrothermally altered ground. Combinations incorporating a daytime TIR band with NIR and MIR bands are also valuable for locating anomalously hot features and distinguishing among different types of surface hydrothermal alteration.

Mongillo, M.A.; Cochrane, G.R.; Wood, C.P.; Shibata, Y.

1995-01-01T23:59:59.000Z

115

Inversion of Newberry Volcano high-resolution traveltime residuals  

SciTech Connect

Inversion of the 1984 traveltime data from the array at Newberry Crater was accomplished using a variant of the method presented by Aki and others (1973). Five-hundred-sixty-five traveltime observations for Pg and a deeper reflection, weighted by their variance estimates, were included in the inversion. Azimuths from receiver-to-source range from 80 to 280. The initial-velocity model for the inversion has four layers. The top layer, starting at the surface and extending to an elevation of 1300 meters above sea level, had a P-velocity of 2.5 km/s. There are three layers below this one, each 1500-m thick, with P-velocities of 4.0, 4.6, and 5.2 km/s. The predominant feature in the inversion result in the upper two layers (surface to 200-m below sea level), is the ring of high velocities coincident with the caldera ring-fracture system. This high-velocity ring is up to 11% faster than the average for these two layers. In these layers velocities are a few percent slower than average in the center of the caldera and range from 5 to 10% slower outside the caldera to the south, east, and north. In the third layer (-200 to 1700 m elevation), the magnitude of the high-velocity anomaly around the ring-fracture system is reduced, but the bin in the center of the caldera is nearly 9% slower than the layer average.

Stauber, D.A.

1986-01-01T23:59:59.000Z

116

Atmospheric 210 Po anomaly as a precursor of volcano  

E-Print Network (OSTI)

that this is appropriate for all the waste sited at the moment. Spent412 fuel and plutonium may not actually need disposal. Whilst burning plutonium in PRISM could reduce the424 quantity of plutonium by 50%, the requirement for plutonium to provided in425 the form of a metal confers some additional challenges, when compared to426

Huh, Chih-An

117

Deploying a wireless sensor network on an active volcano  

E-Print Network (OSTI)

Augmenting heavy and power-hungry data collection equipment with lighter, smaller wireless sensor network nodes leads to faster,larger deployments. Arrays comprising dozens of wireless sensor nodes are now possible,allowing scientific studies that arent feasible with traditional instrumentation. Designing sensor networks to support volcanic studies requires addressing the high data rates and high data fidelity these studies demand. The authors sensor-network application for volcanic data collection relies on triggered event detection and reliable data retrieval to meet bandwidth and data-quality demands. Wireless sensor networks in which numerous resource-limited nodes are linked via low-bandwidth wireless radios have been the focus of intense research during the past few years. Since their conception, theyve excited a range of scientific communities because of their potential to facilitate data acquisition and scientific studies. Collaborations between computer scientists and other domain scientists have produced networks that can record data at a scale and resolution not previously possible. Taking this progress one step further, wireless sensor networks can potentially advance the pursuit of geophysical studies of volcanic activity. Two years ago, our team of computer scientists at Harvard University began collaborating with volcanologists at the University of North Carolina, the University of New Hampshire, and the Instituto

Konrad Lorincz; Matt Welsh; Omar Marcillo; Jeff Johnson; Mario Ruiz; Jonathan Lees

2006-01-01T23:59:59.000Z

118

Lessons Learned from Natural and Industrial Analogues for Storage of Carbon Dioxide in Deep Geological Formations  

E-Print Network (OSTI)

Volcano hazards at Newberry Volcano, Oregon, US Geologicalhttp://vulcan.wr.usgs.gov/Volcanoes/Newberry/Hazards/OFR97-

Benson, Sally M.; Hepple, Robert; Apps, John; Tsang, Chin-Fu; Lippmann, Marcelo

2002-01-01T23:59:59.000Z

119

SUMMARY OF RESERVOIR ENGINEERING DATA: WAIRAKEI GEOTHERMAL FIELD, NEW ZEALAND  

E-Print Network (OSTI)

Grange, L. I. (Compiler), Geothermal Steam for Power i n N eGeology of the Tauhara Geothermal Field, Lake Taupo,"DSIR Geological Survey Geothermal Report No. 4, 1966.

Pritchett, J.W.

2012-01-01T23:59:59.000Z

120

SUMMARY OF RESERVOIR ENGINEERING DATA: WAIRAKEI GEOTHERMAL FIELD, NEW ZEALAND  

E-Print Network (OSTI)

Grange, L. I. (Compiler), Geothermal Steam for Power i n N eGeology of the Tauhara Geothermal Field, Lake Taupo,"DSIR Geological Survey Geothermal Report No. 4, 1966.

Pritchett, J.W.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

The Lava Butte Site Revisited  

E-Print Network (OSTI)

point sample made of Newberry Volcano obsidian and thus, arein lithic type (Newberry Volcano obsidian) and productionpercussion flakes of Newberry Volcano obsidian was found in

Davis, Carl M.; Scott, Sara A.

1991-01-01T23:59:59.000Z

122

SLOPE STABILITY ANALYSIS OF THE ILIAMNA VOLCANO, ALASKA, USING ASTER TIR, SRTM DEM, AND AEROMAGNETIC DATA  

E-Print Network (OSTI)

is an allotetraploid hybrid of A. aleuticum (Ruprecht) Paris (Aleutian Maidenhair Fern) and A. pedatum Linnaeus

123

Geochemical heterogeneity in the Hawaiian plume : constraints from Hawaiian volcanoes and Emperor seamounts  

E-Print Network (OSTI)

The 6000-km long, age-progressive linear Hawaii-Emperor Chain is one of the best defined hotspot tracks. This hotspot track plays an important role in the plume hypothesis. In this research, geochemical data on the ...

Huang, Shichun

2005-01-01T23:59:59.000Z

124

Assembling Dacite in a Continental Subduction Zone: A Case Study of Tauhara Volcano.  

E-Print Network (OSTI)

??Mount Tauhara is the largest dacitic volcanic complex of onshore New Zealand and comprises seven subaerial domes and associated lava and pyroclastic flows, with a (more)

Tutt, Chelsea May

2011-01-01T23:59:59.000Z

125

A 3D Magnetic Structure Of Izu-Oshima Volcano And Their Changes...  

Open Energy Info (EERE)

Login | Sign Up Wiki Browse Latinoamrica Buildings Clean Energy Economy Coordinated Low Emissions Assistance Network Geothermal Incentives and Policies International Clean Energy...

126

He-CO? Systematics in groundwaters at Mount Lassen Volcano , Northern Califronia  

E-Print Network (OSTI)

D. , (1992). Global carbon dioxide emission to the Rate of diffuse carbon dioxide Earth degassing Ventura, G. (2004). Carbon dioxide Earth degassing

Franz, Brian Paul

2012-01-01T23:59:59.000Z

127

Spatial variation of seismic b-values beneath Makushin Volcano, Unalaska Island, Alaska  

E-Print Network (OSTI)

19 April 2006 Editor: S. King Abstract The frequency­magnitude distribution was spatially mapped]. Makushin has had several small steam and ash emissions since it's dis- covery. Little is known about the magma distribution in the crust beneath Makushin. The purpose of the study is to provide constraints

Gao, Stephen Shangxing

128

Quaternary volcano-lacustrine patterns and palaeobotanical data in southern Armenia  

E-Print Network (OSTI)

Caucasus has been strongly influenced by Plio-Quaternary volcanic and tectonic events and Pleistocene Caucasus were influenced by tectono-volcanic events, lake level changes and glacialeinterglacial of early prehistoric human occupation in Georgia (Dmanisi) around 1.81 Ma (Gabunia et al., * Corresponding

Utrecht, Universiteit

129

Structure Of The Lower East Rift Zone Of Kilauea Volcano, Hawaii...  

Open Energy Info (EERE)

a complex of dikes containing solidified magma from past volcanic eruptions that provide energy for the hydrothermal processes associated with the rift zone. Analysis of gravity...

130

Orographic Cloud over the Eastern Slopes of Mauna Loa Volcano, Hawaii, Related to Insolation and Wind  

Science Conference Proceedings (OSTI)

During the period 111 June 1978, solar radiation and other meteorological data were gathered at eight stations arranged in a nearly linear transaction extending from the coast at Hilo, Hawaii to Mauna Loa Observatory, 60 km inland and 3400 m ...

Alfred J. Garrett

1980-07-01T23:59:59.000Z

131

Using seafloor geodesy to monitor volcanic collapse on the south flank of Kilauea Volcano, Hawaii  

E-Print Network (OSTI)

accommodat- ing subsidence in the summit caldera (Lipman etshow the amount of subsidence (in meters) measured theremagnitude seaward slip and subsidence on the south ?ank as

Phillips, Kathleen A.

2006-01-01T23:59:59.000Z

132

Colonization of an island volcano, Long Island, Papua New Guinea, and an emergent island,  

E-Print Network (OSTI)

of pitfall, water and tube traps, fallout collectors, and hand collecting. Results At least thirty. Keywords Allochthonous arthropods, ants, arthropod colonists, organic fallout. INTRODUCTION The origin

133

July 6, 2012 Atmospheric Pollution, Climate Change 1 Vog plume rising from Klauea Volcano.  

E-Print Network (OSTI)

impacts (negative and positive) for different living things. Typically, as human populations and per-capita consumption of natural resources increase, so do the negative impacts on Earth unless the activities and stores large amounts of energy from the sun and releases it slowly, moderating and stabilizing global

Businger, Steven

134

Frequency dependence of mud volcano response to earthquakes Maxwell L. Rudolph1  

E-Print Network (OSTI)

at the nearby Hudson Ranch I geothermal facility; all visits occurred prior to the plant's commissioning on March 9, 2012 (M. Cichon, 49.9-MW Hudson Ranch I Geothermal Plant Unveiled in California, 2012, http://www. renewableenergyworld.com/rea/news/article/2012/05/49-9- mw-hudson-ranch-i-geothermal-plant-unveiled-in-calif). [7

Manga, Michael

135

Mud volcanism: Processes and implications Mud volcanoes: generalities and proposed mechanisms  

E-Print Network (OSTI)

source rocks are the Jurassic ?re and Spekk Formations, the latter being the time the reservoirs are also in direct contact with mature, organic-rich source rocks. The minimum horizontal stress., 1995. Petroleum geochemistry of the Haltenbanken, Norwegian continental shelf. In: Cubitt, J

Manga, Michael

136

Modeling study of growth and potential geohazard for LUSI mud volcano: East Java, Indonesia  

E-Print Network (OSTI)

, and entomologists who informed Jake Kosek's ethnographic account of drone aircraft in the hills of Afghanistan and Pakistan, programmed with algorithms modeled on bee behavior to adopt "swarming" tactics (Kosek this issue

Manga, Michael

137

Misinterpretation of Electrical Resistivity Data in Geothermal Prospecting:  

Open Energy Info (EERE)

Misinterpretation of Electrical Resistivity Data in Geothermal Prospecting: Misinterpretation of Electrical Resistivity Data in Geothermal Prospecting: a Case Study from the Taupo Volcanic Zone Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Misinterpretation of Electrical Resistivity Data in Geothermal Prospecting: a Case Study from the Taupo Volcanic Zone Authors H.M. Bibby, G.F. Risk, T.G. Caldwell and S.L. Bennie Conference World Geothermal Congress 2005; Antalya, Turkey; 2005/04/24 Published ?, 2005 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Misinterpretation of Electrical Resistivity Data in Geothermal Prospecting: a Case Study from the Taupo Volcanic Zone Citation H.M. Bibby,G.F. Risk,T.G. Caldwell,S.L. Bennie. 2005. Misinterpretation of Electrical Resistivity Data in Geothermal Prospecting: a Case Study from

138

Predicting Tephra Dispersion with a Mesoscale Atmospheric Model and a Particle Fall Model: Application to Cerro Negro Volcano  

Science Conference Proceedings (OSTI)

Models of volcanic ash (tephra) fallout are increasingly used to assess volcanic hazards in advance of eruptions and in nearreal time. These models often approximate the wind field using simplistic assumptions of the atmosphere that do not ...

Marc A. Byrne; Arlene G. Laing; Charles Connor

2007-02-01T23:59:59.000Z

139

Brittle creep in basalt and its application to time-dependent volcano deformation M.J. Heap a,b,  

E-Print Network (OSTI)

interpreted as due to a reduction in stress corrosion reactions; the result of a reduction in crack aperture-dependent, subcritical crack growth, of which stress corrosion is the most important mechanism in the Earth's brittle). Stress corrosion is a process by which strained atomic bonds at crack tips react preferentially

140

It takes three to tango: 2. Bubble dynamics in basaltic volcanoes and ramifications for modeling normal Strombolian activity  

E-Print Network (OSTI)

This is the second paper of two that examine numerical simulations of buoyancy-driven flow in the presence of large viscosity contrasts. In the first paper, we demonstrated that a combination of three numerical tools, an ...

Suckale, Jenny

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

157Recent Events: A Perspective on Carbon Dioxide On March 21, 2010 the Eyjafjalla Volcano in Iceland erupted, and the  

E-Print Network (OSTI)

://spacemath.gsfc.nasa.gov #12;Answer Key 157 Problem 1 ­ The Gulf Oil Spill is predicted to generate 200,000 gallons of crude to be burned to generate electricity, and combusted in cars, the fact that the clean-up is producing carbon

142

Recent Mafic Eruptions at Newberry Volcano and in the Central Oregon Cascades: Physical Volcanology and Implications for Hazards.  

E-Print Network (OSTI)

??Mafic eruptions have been the dominant form of volcanic activity in central Oregon throughout the Holocene. These eruptions have produced cinder cones, extensive lava flows, (more)

McKay, Daniele

2012-01-01T23:59:59.000Z

143

Limitations of the advection-diffusion equation for modeling tephra fallout: 1992 eruption of Cerro Negro Volcano, Nicaragua.  

E-Print Network (OSTI)

??Detailed mapping and granulometric analyses of the 1992 Cerro Negro tephra blanket reveal remarkable departures from the expected distribution of tephra. Isomass maps show that (more)

Martin, Kristin Terese

2004-01-01T23:59:59.000Z

144

Fluid transport properties and estimation of overpressure at the Lusi mud volcano, East Java Basin (Tanikawa et al., 2010)  

E-Print Network (OSTI)

Java Basin (Tanikawa et al., 2010) Richard Daviesa, , Michael Mangab , Mark Tingayc , Richard was caused by drilling of the Banjar Panji 1 gas exploration well (Davies et al., 2007; Manga, 2007; Davies et al., 2008; Tingay et al., 2008) or due to the Yogyakarta earthquake that occurred at 05:54 am

Manga, Michael

145

Facing the Challenges of the International Airways Volcano Watch: The 2004/05 Eruptions of Manam, Papua New Guinea  

Science Conference Proceedings (OSTI)

Devastating eruptions occurred at Manam, Papua New Guinea, from October 2004 to January 2005. An unprecedented set of pilot reports were obtained; ground-, air-, and satellite-observed eruption heights differed greatly. Satellite postanalysis and ...

Andrew Tupper; Ima Itikarai; Michael Richards; Fred Prata; Simon Carn; Daniel Rosenfeld

2007-02-01T23:59:59.000Z

146

The fate of the Juan de Fuca plate: Implications for a Yellowstone plume head  

E-Print Network (OSTI)

anomaly beneath the Newberry volcano, and to its immediatethe Cascades and the Newberry Volcano are shown as blue andDepth (km) The Cascades Newberry Volcano SE (b) NW Depth (

Xue, Mei; Allen, Richard A.

2007-01-01T23:59:59.000Z

147

Boulders to Bifaces: Initial Reduction of Obsidian at Newberry Crater, Oregon  

E-Print Network (OSTI)

W. 1973 Petrology of Newberry Volcano, Central Oregon.MacLeod, Norman S. 1982 Newberry Volcano, Oregon: A CascadeEdwin H. McKee 1981 Newberry Volcano, Oregon. In: Guides to

Ozbun, Terry L.

1991-01-01T23:59:59.000Z

148

Mechanical Controls on Eruptions  

E-Print Network (OSTI)

Dashgil mud volcano, Azerbaijan: Evidence for excess fluiddistributions: examples from Azerbaijan and Lusi, East Java,mud volcano eruptions in Azerbaijan occur in the two days

Rudolph, Maxwell Lutman

2012-01-01T23:59:59.000Z

149

Exchange Items or Hunters' Tools? Another Look at Lanceolate Biface Caches in Central Oregon  

E-Print Network (OSTI)

Edwin H. McKee 1981 Newberry Volcano, Oregon. In: Guides toon the western flank of Newberry Volcano, and a K-Ar age of

Minor, Rick; Toepel, Kathryn Anne

1989-01-01T23:59:59.000Z

150

The Occurrence of Pyrrhotite in the Ngawha Geothermal System, New Zealand  

DOE Green Energy (OSTI)

The Ngawha geothermal system is low in all sulfide minerals, but in comparison to systems in the Taupo Volcanic Zone it contains more widely distributed pyrrhotite which is currently depositing, mainly in fractures. This reflects the high proportion of vapor in the Ngawha system. Pyrrhotite is most common in the upper part of the reservoir and lower part of the aquitard. The Ngawha pyrrhotite is of monoclinic and monoclinic + hexagonal structure.

Cox, M.E.; Browne, P.R.L.

1995-01-01T23:59:59.000Z

151

I n d i a n O c e a nI n d i a n O c e a n Arafura Sea  

E-Print Network (OSTI)

NAMPOSHOTO -- Okinawa Okino-tori- shima BONIN ISLANDS VOLCANO ISLANDS Timor Bali Madura Sumba Flores Sumbawa

152

A U S T R A L I A I N D O N E S I A  

E-Print Network (OSTI)

Okinawa shima Okino-tori- BONIN ISLANDS VOLCANO ISLANDS Timor Bali Madura Sumba Flores Sumbawa ANDAMAN

153

Pattern recognition of volcanic tremor data on Mt. Etna (Italy) with KKAnalysis-A software program for unsupervised classification  

Science Conference Proceedings (OSTI)

Continuous seismic monitoring plays a key role in the surveillance of the Mt. Etna volcano. Besides earthquakes, which often herald eruptive episodes, the persistent background signal, known as volcanic tremor, provides important information on the volcano ... Keywords: Cluster analysis, Fuzzy C-means, K-means, Self-organizing map, Volcano monitoring, Volcano seismology

A. Messina; H. Langer

2011-07-01T23:59:59.000Z

154

Real-time volcanic earthquake localization  

Science Conference Proceedings (OSTI)

Keywords: in-network distributed processing, multi-tier sensor network architecture, sensor networks, volcano monitoring

Geoffrey Werner-Allen; Patrick Swieskowski; Matt Welsh

2006-10-01T23:59:59.000Z

155

Petrogenesis of intraplate lavas from isolated volcanoes in the Pacific : implications for the origin of the enriched mantle source of OIB  

E-Print Network (OSTI)

Niu, Y. , M. Regelous, I. J. Wendt, R. Batiza, and M. J. O10.1016/0012-821X(88)90099-4. Wendt, J. I. , M. Regelous, K.Niu, Y. , M. Regelous, I. J. Wendt, R. Batiza, and M. J. O

Tian, Liyan

2011-01-01T23:59:59.000Z

156

Geothermal resource assessment of Mt. Hood volcano, Oregon, Phase I study. Technical progress report No. 2, October 1, 1977--March 31, 1978  

DOE Green Energy (OSTI)

Several phases of the Mt. Hood geothermal resource assessment project are nearing completion. Most of the field work has been completed for the geologic study, gravity survey, and water sampling portions of the project. Thermal modelling, water analyses, rock analyses and age dating, and preparation of a complete Bouguer gravity map are in progress.

Hull, D.A.

1978-05-31T23:59:59.000Z

157

SOEST Publications List (7000 on) 7000 Garcia, M.O., E.H. Haskins, E.M. Stolper, and M. Baker, 2007, Anatomy of a Hawaiian shield volcano,  

E-Print Network (OSTI)

biogeochemical cycles of trace elements and their isotopes, Chemie der Erde-Geochem., 67, 85-131, doi:10.1016/j, and A. Deutsch (eds.), Large Meteorite Impacts III, Geological Society of America, Special Paper 384, p

158

Thermal surveillance of active volcanoes using the Landsat-1 Data Collection System. Part III. Heat discharge from Mount St. Helens, Washington  

DOE Green Energy (OSTI)

Two thermal anomalies, A at 2740 m altitude on the north slope, and B between 2650 and 2750 m altitude on the southwest slope at the contact of the dacite summit dome of Mount St. Helens, Washington, were confirmed by aerial infrared-scanner surveys between 1971 and 1973. Landsat-1 Data Collection Platform 6166, emplaced at site B anomaly, transmitted 482 sets of temperature values in 1973 and 1974, suitable for estimating the differential radiant exitance as 84 W m/sup -2/, approximately equivalent to the Fourier conductive flux of 89 W m/sup -2/ in the upper 15 cm below the surface. The differential geothermal flux, including heat loss via evaporation and convection, was estimated at 376 W m/sup -2/. Total energy yield of Mount St. Helens probably ranges between 0.1 and 0.4 x 10/sup 6/ W.

Friedman, J.D.; Frank, D.

1977-01-01T23:59:59.000Z

159

The Natural Geochemistry of Tetrafluoromethane and Sulfur Hexafluoride : Studies of Ancient Mojave Desert Groundwaters, North Pacific Seawaters and the Summit Emissions of Kilauea Volcano  

E-Print Network (OSTI)

pdfs_desc/8-9.pdf Flint L. E. ,Hevesi J. A. , Flint A. L. , Christensen A. H. , Sneed M. ,of our child. Lorrie Flint (USGS) kindly sent me the

Deeds, Daniel A

2008-01-01T23:59:59.000Z

160

Strike-slip faulting as a trigger mechanism for overpressure release through piercement structures. Implications for the Lusi mud volcano, Indonesia  

E-Print Network (OSTI)

MMI) close to the Lusi eruption site (U.S. Geological Survey, 2006). Note that the Watu- kosek fault

Mazzini, Adriano

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Volcano Experiment Caitlin Hoy http://www.spectroscopynow.com/coi/cda/detail.cda?id=12202&type=Feature&chId=8&page=1  

E-Print Network (OSTI)

Materials Aluminum foil pan 50 mL flat-bottom centrifuge tubes Newspaper and newspaper strips Tape Baking dioxide is produced, pressure builds up inside the plastic bottle until the gas starts to bubble out

Benitez-Nelson, Claudia

162

New results on the resistivity structure of Merapi Volcano (Indonesia), derived from 3D restricted inversion of long-offset transient electromagnetic data  

E-Print Network (OSTI)

B. E. , 1993. Electrical resistivities of crustal ?uids, J.G. E. , 1942. The electrical resistivity log as an aid inthe electrical structure, DC resistivity soundings on the

Commer, Michael; Helwig, Stefan, L.; Hordt, Andreas; Scholl, Carsten; Tezkan, Bulent

2006-01-01T23:59:59.000Z

163

A Volcano Rekindled: The Renewed Eruption of Mount St. Helens, 20042006 Edited by David R. Sherrod, William E. Scott, and Peter H. Stauffer  

E-Print Network (OSTI)

, William E. Scott, and Peter H. Stauffer U.S. Geological Survey Professional Paper 1750, 2008 Chapter 12 1 U.S. Geological Survey, 1300 SE Cardinal Court, Vancouver, WA 98683 2 U.S. Geological Survey, PO Box by other researchers to correlate with repetitive, nearly periodic shallow earthquakes. Introduction Aerial

164

The natural geochemistry of tetrafluoromethane and sulfur hexafluoride : : studies of ancient Mojave Desert groundwaters, North Pacific seawaters and the summit emissions of Kilauea Volcano  

E-Print Network (OSTI)

4 is detectable, and the source rock for CF 4 in upwellingsource of lithospheric CF 4 and SF 6 to Mojave Desert groundwaters is accessory fluorites contained in granitic rock.

Deeds, Daniel A.

2008-01-01T23:59:59.000Z

165

The Natural Geochemistry of Tetrafluoromethane and Sulfur Hexafluoride : Studies of Ancient Mojave Desert Groundwaters, North Pacific Seawaters and the Summit Emissions of Kilauea Volcano  

E-Print Network (OSTI)

4 is detectable, and the source rock for CF 4 in upwellingsource of lithospheric CF 4 and SF 6 to Mojave Desert groundwaters is accessory fluorites contained in granitic rock.

Deeds, Daniel A

2008-01-01T23:59:59.000Z

166

Principal Component Image Analysis of MODIS for Volcanic Ash. Part I: Most Important Bands and Implications for Future GOES Imagers  

Science Conference Proceedings (OSTI)

In Part I of this paper, the infrared bands of the Moderate Resolution Imaging Spectroradiometer (MODIS) are analyzed for volcanic ash signals using principal component image analysis. Target volcanoes included Popocatepetl volcano near Mexico ...

Donald W. Hillger; James D. Clark

2002-10-01T23:59:59.000Z

167

Living in the shadow of Mauna Loa  

E-Print Network (OSTI)

One of Hawaii's most dangerous natural hazards is sitting in plain sight: Mauna Loa volcano. The mighty mountain makes up more than fifty percent of the island and is the largest volcano on Earth. Since 1843, when people ...

Hirji, Zahra R. (Zahra Rafik)

2013-01-01T23:59:59.000Z

168

Geothermal Literature Review At International Geothermal Area, New Zealand  

Open Energy Info (EERE)

Area, New Zealand Area, New Zealand (Ranalli & Rybach, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At International Geothermal Area New Zealand (Ranalli & Rybach, 2005) Exploration Activity Details Location International Geothermal Area New Zealand Exploration Technique Geothermal Literature Review Activity Date Usefulness not indicated DOE-funding Unknown Notes Lake Taupo, North Island, re: Heat Flow References G. Ranalli, L. Rybach (2005) Heat Flow, Heat Transfer And Lithosphere Rheology In Geothermal Areas- Features And Examples Retrieved from "http://en.openei.org/w/index.php?title=Geothermal_Literature_Review_At_International_Geothermal_Area,_New_Zealand_(Ranalli_%26_Rybach,_2005)&oldid=510814

169

A Case Study of Wide Diameter Casing for Geothermal Systems  

SciTech Connect

Three wells have been drilled in the central resistivity area of a geothermal field in the Taupo Volcanic Zone, New Zealand. Using a well bore simulator, WELL SIM V3.0, reservoir conditions and well characteristics are evaluated to determine the increase in output by increasing production casing diameters from either 8-5/8 inches OD or 9-5/8 inches OD to 13-3/8 inches OD. Increases in well drilling costs are determined to provide a commentary on the economics. While open hole size is effectively doubled, well costs increase by 10% and, in this study, output increases by an average of 18%.

King, T.R.; Freeston, D.H.; Winmill, R.L.

1995-01-01T23:59:59.000Z

170

Flood and Shield Basalts from Ethiopia: Magmas from the African Superswell  

E-Print Network (OSTI)

-known, but less well-preserved, flood basalt provinces such as the Deccan and Karoo. The shield volcanoes have

Demouchy, Sylvie

171

NIST Signs US-China Cooperative Agreement on Earthquake ...  

Science Conference Proceedings (OSTI)

NIST Signs US-China Cooperative Agreement on Earthquake and Volcano Sciences. For Immediate Release: October 20, 2009. ...

2010-12-28T23:59:59.000Z

172

Collision, metamorphism and uplift recorded in the Latimojong Mountains, Sulawesi, Indonesia  

E-Print Network (OSTI)

, and petroleum. However, the source of the fluids and the fluid­rock interactions within the mud volcano conduit.S., 2007. Regional evaluation of source rock in Azerbaijan from the geochemistry of organic-rich rocks volcanoes sleep: Insight from seep geochemistry at the Dashgil mud volcano, Azerbaijan, Marine and Petroleum

173

Summary of recent volcanic activity - Springer  

Science Conference Proceedings (OSTI)

Dec 6, 1985 ... (Aleutian Islands) on December 10. The cloud was probably mainly steam with only minor amounts of ash. The volcano has been steaming...

174

Geochemistry of a volcanic hydrothermal system at Mount Spurr, Alaska.  

E-Print Network (OSTI)

??Mount Spurr is an ice and snow-covered andesitic volcano located at the northern extent of the Aleutian arc in south central Alaska. Previous workers have (more)

Garchar, Laura

2012-01-01T23:59:59.000Z

175

Feature Detection, Characterization and Confirmation Methodology: Final Report  

E-Print Network (OSTI)

and J. Whitney. 2004. Yucca Mountain Site Description. TDR-tomography studies at Yucca Mountain, Nevada, J. Geophys.volcanoes near Yucca Mountain, Nevada. U.S. Geological

Karasaki, Kenzi

2009-01-01T23:59:59.000Z

176

Isotopic Analysis At Long Valley Caldera Area (Evans, Et Al....  

Open Energy Info (EERE)

but also may provide additional insight to subsurface conditions. For example, CO2-rich groundwaters that are cold and dilute may be a general indicator that a volcano...

177

Laboratory and field-based instrumentation developments and noble gas-stable isotope systematics of Rungwe Volcanic Province, Iceland and the Central Indian Ridge  

E-Print Network (OSTI)

E. (1986) Dissolved carbon dioxide in basaltic glasses:on degassing of carbon dioxide from Kilauea volcano.versus anthropogenic carbon dioxide. EOS. 92, 201202.

Barry, Peter Hagan; Barry, Peter Hagan

2012-01-01T23:59:59.000Z

178

A U S T R A L I A I N D O N E S I A  

E-Print Network (OSTI)

-- I S L A N D S R Y U K Y U Okinawa shima Okino-tori- BONIN ISLANDS VOLCANO ISLANDS Timor Bali Madura

179

Validation of Innovative Exploration Technologies for Newberry...  

Open Energy Info (EERE)

Validation of Innovative Exploration Technologies for Newberry Volcano Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Validation of...

180

Compound and Elemental Analysis At Newberry Caldera Area (Goles...  

Open Energy Info (EERE)

References Gordon G. Goles, Richard St J. Lambert (1990) A Strontium Isotopic Study Of Newberry Volcano, Central Oregon- Structural And Thermal Implications Retrieved from...

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Isotopic Analysis At Newberry Caldera Area (Goles & Lambert,...  

Open Energy Info (EERE)

References Gordon G. Goles, Richard St J. Lambert (1990) A Strontium Isotopic Study Of Newberry Volcano, Central Oregon- Structural And Thermal Implications Retrieved from...

182

EA-1897: Final Environmental Assessment | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Final Environmental Assessment EA-1897: Final Environmental Assessment AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon This EA evaluates the environmental impacts...

183

Core Analysis At Newberry Caldera Area (Carothers, Et Al., 1987...  

Open Energy Info (EERE)

H. Mariner, Terry E. C. Keith (1987) Isotope Geochemistry Of Minerals And Fluids From Newberry Volcano, Oregon Retrieved from "http:en.openei.orgwindex.php?titleCoreAnaly...

184

Property:Geothermal/Partner10 | Open Energy Information  

Open Energy Info (EERE)

10 Pages using the property "GeothermalPartner10" Showing 1 page using this property. N Newberry Volcano EGS Demonstration Geothermal Project + University of Utah + Retrieved...

185

Isotopic Analysis At Newberry Caldera Area (Carothers, Et Al...  

Open Energy Info (EERE)

H. Mariner, Terry E. C. Keith (1987) Isotope Geochemistry Of Minerals And Fluids From Newberry Volcano, Oregon Retrieved from "http:en.openei.orgwindex.php?titleIsotopicA...

186

Draft Fourth Northwest Conservation and Electric Power Plan, Appendix K RENEWABLE RESOURCE CONFIRMATION AGENDA  

E-Print Network (OSTI)

Northwest geothermal resources. Agreements have been negotiated for projects at Newberry Volcano, Oregon and Glass Mountain, California. Complete demonstration projects at Newberry and Glass Mountain and document

187

Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea...  

Open Energy Info (EERE)

SURVEY, 2006 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Geologic Map of the Middle East Rift Geothermal Subzone, Kilauea Volcano,...

188

Active System For Monitoring Volcanic Activity- A Case Study...  

Open Energy Info (EERE)

System For Monitoring Volcanic Activity- A Case Study Of The Izu-Oshima Volcano, Central Japan Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Active...

189

Fluid origins, paths, and fluid-rock reactions at convergent margins, using halogens, Cl stable isotopes, and alkali metals as geochemical tracers  

E-Print Network (OSTI)

fluids fuel extremophilic Archaea on a Mariana forearc serpentinite mud volcano: Ocean Drillingfluid flow in the western Nankai subduction zone, Japan. Proceedings of the Ocean Drilling

Wei, Wei

2007-01-01T23:59:59.000Z

190

Definition: Fumaroles | Open Energy Information  

Open Energy Info (EERE)

Fumaroles An opening in the earth's crust, typically near a volcano, in which steam and hot sulfurous gasses are discharged. View on Wikipedia Wikipedia Definition Ret...

191

Rock units in regional tectonic analysis - Springer  

Science Conference Proceedings (OSTI)

sins, chains of volcanoes, faulting, uplift and subsidence of crustal blocks, and so on. The causative processes remain unseen, and can only be inferred ftom...

192

Accidental Gas Emission From Shallow Pressurized Aquifers At...  

Open Energy Info (EERE)

suggested that Alban Hills (Rome) is a quiescent and not an extinct volcano, as it produced Holocene eruptions and several lahars until Roman times by water overflow from...

193

A Study Of Scale Deposition- An Analogue Of Meso- To Epithermal...  

Open Energy Info (EERE)

An Analogue Of Meso- To Epithermal Ore Formation In The Volcano Of Milos, Aegean Arc, Greece Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Study...

194

Conduction Models Of The Temperature Distribution In The East...  

Open Energy Info (EERE)

Conduction Models Of The Temperature Distribution In The East Rift Zone Of Kilauea Volcano Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Conduction...

195

A Survey Of Seismic Activity Near Wairakei Geothermal Field, New Zealand |  

Open Energy Info (EERE)

Of Seismic Activity Near Wairakei Geothermal Field, New Zealand Of Seismic Activity Near Wairakei Geothermal Field, New Zealand Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Survey Of Seismic Activity Near Wairakei Geothermal Field, New Zealand Details Activities (0) Areas (0) Regions (0) Abstract: A five-week survey showed that seismic activity within 20 km of Wairakei Geothermal Field took place mainly at shallow depths (< 2 km), in or close to the Taupo Fault Belt, and occurred in swarms. Twenty-eight earthquakes, with magnitudes (M) between -1.3 and +2.8, were located; 43 other earthquakes, with M < 0.2, were recorded but could not be located. The distribution of located earthquakes did not correlate with known areas of surface geothermal activity. No located earthquake occurred beneath the

196

An Integrated Model For The Temporal Evolution Of Andesites And Rhyolites  

Open Energy Info (EERE)

Model For The Temporal Evolution Of Andesites And Rhyolites Model For The Temporal Evolution Of Andesites And Rhyolites And Crustal Development In New Zealand'S North Island Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Integrated Model For The Temporal Evolution Of Andesites And Rhyolites And Crustal Development In New Zealand'S North Island Details Activities (0) Areas (0) Regions (0) Abstract: The Taupo Volcanic Zone (TVZ) is the southern expression of the Tonga-Kermadec subduction system within the continental crust of New Zealand's North Island. It is a region of rapid extension and high heat flow containing one of the most productive, frequently active rhyolitic magmatic systems on Earth. Rhyolites make up >80% of the total erupted material with rhyolitic magmatism being prevalent from the earliest stages

197

Field-based tests of geochemical modeling codes using New Zealand hydrothermal systems  

DOE Green Energy (OSTI)

Hydrothermal systems in the Taupo Volcanic Zone, North Island, New Zealand are being used as field-based modeling exercises for the EQ3/6 geochemical modeling code package. Comparisons of the observed state and evolution of the hydrothermal systems with predictions of fluid-solid equilibria made using geochemical modeling codes will determine how the codes can be used to predict the chemical and mineralogical response of the environment to nuclear waste emplacement. Field-based exercises allow us to test the models on time scales unattainable in the laboratory. Preliminary predictions of mineral assemblages in equilibrium with fluids sampled from wells in the Wairakei and Kawerau geothermal field suggest that affinity-temperature diagrams must be used in conjunction with EQ6 to minimize the effect of uncertainties in thermodynamic and kinetic data on code predictions.

Bruton, C.J.; Glassley, W.E.; Bourcier, W.L.

1994-06-01T23:59:59.000Z

198

CONSERVATION STATUS Colorado's Animals, Plants, and Plant Communities  

E-Print Network (OSTI)

. Introduction Volcano monitoring in the Aleutians is of great importance due to the heavy amount of airplane beyond the twenty monitored volcanoes ultimately to the entire Aleutian Chain (S. Prejean and R. Wessels and numerous avalanche and Holocene lahar deposits (Begét 1996). Iliamna is part of the Aleutian Range, which

199

S. Planke H. Svensen M. Hovland D. A. Banks B. Jamtveit  

E-Print Network (OSTI)

in active mud volcanoes in Azerbaijan Received: 7 February 2003 / Accepted: 2 September 2003 / Published online: 23 October 2003 ? Springer-Verlag 2003 Abstract Mud volcanic eruptions in Azerbaijan nor- mally active mud volcanoes in Azerbaijan and geochemical analysis of seep waters from two of these. Mud

Banks, David

200

Required Credentials (Refer to Important Notes  

E-Print Network (OSTI)

­271. Jakubov, A.A., Ali-Zade, A.A., Zeinalov, M.M., 1971. Mud Volcanoes of the Azerbaijan SSR, Atlas (in Russian). Azerbaijan Academy of Sciences, Baku. Kholodov, V.N., 1983. Postsedimentary Transformations. Temperature evolution in the Lokbatan mud volcano crater (Azerbaijan) after the eruption of 25 October 2001

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

ISES Office Faculty of Earth and Life Sciences  

E-Print Network (OSTI)

studies to Georgia, Armenia, Azerbaijan and possibly Turkey and Iran are foreseen. e. ISES Benchfee #12 northeast Turkey, Georgia, Armenia and Azerbaijan we aim at sampling Cretaceous and younger volcano in southeastern Azerbaijan are mainly covered by volcano- sedimentary Paleogene deposits. The Eocene to Oligocene

Utrecht, Universiteit

202

Dynamics of hydrothermal seeps from the Salton Sea geothermal system (California, USA) constrained by temperature monitoring  

E-Print Network (OSTI)

water. This model is consistent with data from seeping mud volcanoes in Azerbaijan, where water of the Azerbaijan SSR, (in Russian), Azerbaijan Acad. of Sci., Baku, Azerbaijan. Kerrick, D. M., M. A. McKibben, T volcano, Azerbaijan, Mar. Pet. Geol., in press. Melard, G. (1984), Algorithm AS 197: A fast algorithm

Mazzini, Adriano

203

PROCEEDINGS, Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 31 -February 2, 2011  

E-Print Network (OSTI)

PLANNING AT THE NEWBERRY VOLCANO EGS DEMONSTRATION PROJECT Trenton T. Cladouhos1 , Susan Petty1 , Owen on the Enhanced Geothermal Systems (EGS) Demonstration Project at Newberry Volcano in central Oregon. The tectonic building a preliminary 3-D stress model for Newberry by collecting new field and laboratory data, including

Stanford University

204

Fusion-based volcanic earthquake detection and timing in wireless sensor networks  

Science Conference Proceedings (OSTI)

Volcano monitoring is of great interest to public safety and scientific explorations. However, traditional volcanic instrumentation such as broadband seismometers are expensive, power hungry, bulky, and difficult to install. Wireless sensor networks ... Keywords: Volcano monitoring, data fusion, earthquake detection, wireless sensor network

Rui Tan; Guoliang Xing; Jinzhu Chen; Wen-Zhan Song; Renjie Huang

2013-03-01T23:59:59.000Z

205

PLoS Biology | www.plosbiology.orgPLoS Biology | www.plosbiology.org 0426 March 2009 | Volume 7 | Issue 3 | e1000069 Perspective  

E-Print Network (OSTI)

/yr on the Aleutian megathrust (Haeussler et al., 2000). The Yakutat Block is a microplate colliding with the southern and an arc of volcanoes that form parts of the Alaska and Aleutian Ranges. Cook Inlet and the Kenai Mountains

Sagarin, Rafe

206

2006 Geological Society of America. For permission to copy, contact Copyright Permissions, GSA, or editing@geosociety.org. Geology; July 2006; v. 34; no. 7; p. 581584; doi: 10.1130/G22367.1; 3 figures. 581  

E-Print Network (OSTI)

is colliding oblique- ly with the Aleutian arc (Nakamura et al., 1977) and where the eastern portion., Jacob, K.H., and Davies, J.N., 1977, Volcanoes as possible indicators of tectonic stress orientation--Aleutians

Engelder, Terry

207

A Gravitational Spreading Origin For The Socompa Debris Avalanche | Open  

Open Energy Info (EERE)

Gravitational Spreading Origin For The Socompa Debris Avalanche Gravitational Spreading Origin For The Socompa Debris Avalanche Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Gravitational Spreading Origin For The Socompa Debris Avalanche Details Activities (0) Areas (0) Regions (0) Abstract: Socompa Volcano arguably provides the world's best-exposed example of a sector collapse-derived debris avalanche deposit. New observations lead us to re-interpret the origin of the sector collapse. We show that it was triggered by failure of active thrust-anticlines in sediments and ignimbrites underlying the volcano. The thrust-anticlines were a result of gravitational spreading of substrata under the volcano load. About 80% of the resulting avalanche deposit is composed of substrata formerly residing under the volcano and in the anticlines. The collapse

208

Constraints On The Mechanism Of Long-Term, Steady Subsidence At Medicine  

Open Energy Info (EERE)

Constraints On The Mechanism Of Long-Term, Steady Subsidence At Medicine Constraints On The Mechanism Of Long-Term, Steady Subsidence At Medicine Lake Volcano, Northern California, From Gps, Leveling, And Insar Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Constraints On The Mechanism Of Long-Term, Steady Subsidence At Medicine Lake Volcano, Northern California, From Gps, Leveling, And Insar Details Activities (2) Areas (1) Regions (0) Abstract: Leveling surveys across Medicine Lake volcano (MLV) have documented subsidence that is centered on the summit caldera and decays symmetrically on the flanks of the edifice. Possible mechanisms for this deformation include fluid withdrawal from a subsurface reservoir, cooling/crystallization of subsurface magma, loading by the volcano and dense intrusions, and crustal thinning due to tectonic extension (Dzurisin

209

Combinations of Natural and Anthropogenic Forcings in Twentieth-Century Climate  

Science Conference Proceedings (OSTI)

Ensemble simulations are run with a global coupled climate model employing five forcing agents that influence the time evolution of globally averaged surface air temperature during the twentieth century. Two are natural (volcanoes and solar) and ...

Gerald A. Meehl; Warren M. Washington; Caspar M. Ammann; Julie M. Arblaster; T. M. L. Wigley; Claudia Tebaldi

2004-10-01T23:59:59.000Z

210

Thermal and mechanical development of the East African Rift System  

E-Print Network (OSTI)

The deep basins, uplifted flanks, and volcanoes of the Western and Kenya rift systems have developed along the western and eastern margins of the 1300 km-wide East African plateau. Structural patterns deduced from field, ...

Ebinger, Cynthia Joan

1988-01-01T23:59:59.000Z

211

Implementation and validation of a meteorological dispersion model applied on volcanic gas emission for studies of environmental impact.  

E-Print Network (OSTI)

??The Lagrangian atmospheric transport model FLEXPART-WRF was implemented to model dispersion of volcanic gas emitted from the three volcanoes Popocatpetl in Mexico (lat: 19.02, lon: (more)

Landgren, Oskar A.

2011-01-01T23:59:59.000Z

212

WATCH WHO KNEW? ON YAHOO! NEWS: Related Searches: national institute of neurological disorders and stroke  

E-Print Network (OSTI)

.StockPickTrading.com Top Stories sponsored links Featured TRENDING NOW: iceland volcano iran cristiano ronaldo china volcanic ashSearch All News News Search Health Video Weight Loss Sexual Health Medications/Drugs Parenting

Rogers, John A.

213

Effects of the El Chichn Volcanic Cloud on Solar Radiation Received at Fairbanks, Alaska  

Science Conference Proceedings (OSTI)

Detailed insulation measurements have been carried out in Fairbanks for the last four years. Beginning on 15 November 1982, these measurements showed substantial changes, believed to be due to the dust cloud of El Chichn. The volcano, situated ...

Gerd Wendler

1984-03-01T23:59:59.000Z

214

Trends in Stratospheric Ozone: Lessons Learned from a 3D Chemical Transport Model  

Science Conference Proceedings (OSTI)

Stratospheric ozone is affected by external factors such as chlorofluorcarbons (CFCs), volcanoes, and the 11-yr solar cycle variation of ultraviolet radiation. Dynamical variability due to the quasi-biennial oscillation and other factors also ...

Richard S. Stolarski; Anne R. Douglass; Stephen Steenrod; Steven Pawson

2006-03-01T23:59:59.000Z

215

EA-1897: Finding of No Significant Impact | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

7: Finding of No Significant Impact EA-1897: Finding of No Significant Impact AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon Based on the information presented in...

216

EA-1897: Finding of No Significant Impact | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Finding of No Significant Impact EA-1897: Finding of No Significant Impact AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon Based on the information presented in the...

217

A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea...  

Open Energy Info (EERE)

1974 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for A Time-Domain Electromagnetic Survey of the East Rift Zone Kilauea Volcano,...

218

Refraction Survey At Kilauea East Rift Area (Broyles, Et Al....  

Open Energy Info (EERE)

Structure Of The Lower East Rift Zone Of Kilauea Volcano, Hawaii, From Seismic And Gravity Data Retrieved from "http:en.openei.orgwindex.php?titleRefractionSurveyAtKila...

219

All News Releases  

NLE Websites -- All DOE Office Websites (Extended Search)

are colored white and located in the upper right quadrant of the array. New gamma-ray observatory begins operations at Sierra Negra volcano in the state of Puebla, Mexico...

220

Constraints On The Mechanism Of Long-Term, Steady Subsidence...  

Open Energy Info (EERE)

of Geophysical Research 96, 16, 319-16, 333.); Dzurisin et al., 2002 (Dzurisin, D., Poland, M.P., Burgmann, R., 2002. Steady subsidence of Medicine Lake Volcano, Northern...

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Radiative Forcing of the Stratosphere by SO2 Gas, Silicate Ash, and H2SO4 Aerosols Shortly after the 1982 Eruptions of El Chichn  

Science Conference Proceedings (OSTI)

The 1982 eruptions of the El Chichn volcano injected large quantities of sulfur dioxide gas and silicate ash into the stratosphere. Several studies have shown that the long-lived sulfuric acid aerosols derived from these volcanic effluents ...

M. F. Gerstell; Joy Crisp; David Crisp

1995-05-01T23:59:59.000Z

222

The Geochemistry of the HGP-A Geothermal Well: A Review and an Update  

DOE Green Energy (OSTI)

The HGP-A geothermal well, located on the lower east rift system of Kilauea volcano, has provided steam and hot water to a 3 MWe wellhead generator facility on a continuous basis since December 1981.

Thomas, Donald M.

1988-01-01T23:59:59.000Z

223

Quality-Driven Volcanic Earthquake Detection Using Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Volcano monitoring is of great interest to public safety and scientific explorations. However, traditional volcanic instrumentation such as broadband seismometers are expensive, power-hungry, bulky, and difficult to install. Wireless sensor networks ...

Rui Tan; Guoliang Xing; Jinzhu Chen; Wen-Zhan Song; Renjie Huang

2010-11-01T23:59:59.000Z

224

Category:Topographic Features | Open Energy Information  

Open Energy Info (EERE)

are in this category, out of 5 total. C Cinder Cone H Horst and Graben L Lava Dome S Shield Volcano Stratovolcano Retrieved from "http:en.openei.orgwindex.php?titleCategory:...

225

For permission to copy, contact editing@geosociety.org 2006 Geological Society of America  

E-Print Network (OSTI)

(Santorini, Greece) based on a light detection and ranging laser radar (LiDAR) aerial survey carried out in April 2004. This is one of the first applications of an aerial LiDAR survey to a volcano

Elliott, John

226

Errors in the Determination of the Solar Constant by the Langley Method Due to the Presence of Volcanic Aerosol  

Science Conference Proceedings (OSTI)

The accuracy in the determination or the solar constant by means of the Langley method is strongly influenced by the spatial inhomogeneities of the atmospheric aerosol. Volcanos frequently inject aerosol into the upper troposphere and lower ...

Richard M. Schotland; James E. Hartman

1989-02-01T23:59:59.000Z

227

Sensor networks for high-resolution monitoring of volcanic activity  

Science Conference Proceedings (OSTI)

We developed and deployed a wireless sensor network for monitoring seismoacoustic activity at Volcn Reventador, Ecuador. Wireless sensor networks are a new technology and our group is among the first to apply them to monitoring volcanoes. The ...

Matt Welsh; Geoff Werner-Allen; Konrad Lorincz; Omar Marcillo; Jeff Johnson; Mario Ruiz; Jonathan Lees

2005-10-01T23:59:59.000Z

228

Active System For Monitoring Volcanic Activity- A Case Study Of The  

Open Energy Info (EERE)

System For Monitoring Volcanic Activity- A Case Study Of The System For Monitoring Volcanic Activity- A Case Study Of The Izu-Oshima Volcano, Central Japan Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Active System For Monitoring Volcanic Activity- A Case Study Of The Izu-Oshima Volcano, Central Japan Details Activities (0) Areas (0) Regions (0) Abstract: A system is proposed for the monitoring of changes in the underground structure of an active volcano over time by applying a transient electromagnetic method. The monitoring system is named ACTIVE, which stands for Array of Controlled Transient-electromagnetics for Imaging Volcano Edifice. The system consists of a transmitter dipole used to generate a controlled transient electromagnetic (EM) field and an array of receivers used to measure the vertical component of the transient magnetic

229

Testing EQ3/6 and GEMBOCHS using fluid-mineral equilibria in the wairakei geothermal system  

DOE Green Energy (OSTI)

The ability of the EQ3 and EQ6 geochemical modeling codes and the GEMBOCHS thermodynamic data bases to simulate geochemical changes in the post-emplacement environment at the potential Yucca Mountain, Nevada repository is being tested using observed mineral-fluid relations in the Taupo Volcanic Zone of New Zealand. In this report, comparisons between observed equilibria and simulations of field relations in the Wairakei geothermal system are used to test the codes and data bases in high temperature systems. Analysis of trends in water and gas chemistries and well discharge characteristics with time were used to identify a set of representative water and gas analyses from zones producing at about 250{degrees}C. The most common vein minerals at this temperature are: wairakite, adularia, epidote, quartz, albite, chlorite, calcite, prehnite, and pyrite. Calculations were carried out using version 7.2a R134 of EQ3 and version 7.2a R130 of EQ6 and the SUPCRT and COM subsets of the R24 version of GEMBOCHS. Thermodynamic data bases using different data for Al aqueous species were sued to identify the data set which produced the best matches between observed and calculated equilibria. The simulations described in this paper suggest that EQ6 can be used to identify facies of minerals that will be stable in various environments, but can not be used to predict the exact phase assemblage that is in equilibrium with a given water.

Bruton, C.J.

1995-08-28T23:59:59.000Z

230

The Role of Boron-Chloride and Noble Gas Isotope Ratios in TVZ Geothermal Systems  

DOE Green Energy (OSTI)

The model of the geothermal system in which deep circulating groundwater containing noble gases, at air saturated water concentrations, mixes with hot fluids of mantle origin at depth, is extended to include the effect of interaction of the ascending fluid with both solid and gaseous phases of basement (or other) rocks en route to the surface. It is demonstrated that this interaction is responsible for most of the CO{sub 2} in the Taupo Volcanic Zone (TVZ) geothermal systems. It is proposed that the modeling of this interaction might be accomplished by techniques similar to those used for the understanding of the oxygen isotope shift found in geothermal systems. The water rock interaction experiments of Ellis and Mahon (1964, 1967) provides some data on the kinetic rates for B and Cl dissolution from rocks likely to be encountered in the geothermal system, but further information on the behavior of B may be needed. If these problems can be overcome this modeling technique has promise for the estimation of the recharge of geothermal systems and hence the sustainability of these systems.

Hulston, J.R.

1995-01-01T23:59:59.000Z

231

Testing geochemical modeling codes using New Zealand hydrothermal systems  

DOE Green Energy (OSTI)

Hydrothermal systems in the Taupo Volcanic Zone, North Island, New Zealand are being used as field-based modeling exercises for the EQ3/6 geochemical modeling code package. Comparisons of the observed state and evolution of selected portions of the hydrothermal systems with predictions of fluid-solid equilibria made using geochemical modeling codes will: (1) ensure that we are providing adequately for all significant processes occurring in natural systems; (2) determine the adequacy of the mathematical descriptions of the processes; (3) check the adequacy and completeness of thermodynamic data as a function of temperature for solids, aqueous species and gases; and (4) determine the sensitivity of model results to the manner in which the problem is conceptualized by the user and then translated into constraints in the code input. Preliminary predictions of mineral assemblages in equilibrium with fluids sampled from wells in the Wairakei geothermal field suggest that affinity-temperature diagrams must be used in conjunction with EQ6 to minimize the effect of uncertainties in thermodynamic and kinetic data on code predictions. The kinetics of silica precipitation in EQ6 will be tested using field data from silica-lined drain channels carrying hot water away from the Wairakei borefield.

Bruton, C.J.; Glassley, W.E.; Bourcier, W.L.

1993-12-01T23:59:59.000Z

232

Concentration system performance degradation in the aftermath of Mount Pinatubo  

Science Conference Proceedings (OSTI)

Major volcanic eruptions occur every few years, but most have little effect on solar radiation or climate. However, in the last ten years two volcanoes have decreased solar radiation and influenced weather at a level that might be expected at the frequency of about once a century. The Mexican volcano El Chichon and the Philippine volcano Mount Pinatubo put 6 and 20 million metric tons of SO{sub 2} in the stratosphere, respectively. SO{sub 2} is converted into H{sub 2}SO{sub 4}, which mixes with water to produce aerosol. Since there is no weather in the stratosphere and the aerosol is small, these aerosol particles remain suspended until coagulation and sedimentation bring them to the troposphere where they are removed by normal wet and dry deposition processes. The extinction in the direct solar irradiance from El Chichon was found to peak during the winter of 1983 at about 11% for northern, mid latitudes. Mount Pinatubo`s peak extinction during 1992 was about 15%. Data from four northern, mid-latitude sites are examined to compare the direct consequences of the volcano`s eruption on the performance of concentrating solar energy systems and the indirect effects that may be associated with Mount Pinatubo`s perturbation of the weather.

Michalsky, J.J.; Perez, R.; Seals, R. [State Univ. of New York, Albany, NY (United States). Atmospheric Sciences Research Center; Ineichen, P. [Geneva Univ. (Switzerland). Groupe de Physique Appliquee

1993-11-01T23:59:59.000Z

233

A Study Of Scale Deposition- An Analogue Of Meso- To Epithermal Ore  

Open Energy Info (EERE)

Study Of Scale Deposition- An Analogue Of Meso- To Epithermal Ore Study Of Scale Deposition- An Analogue Of Meso- To Epithermal Ore Formation In The Volcano Of Milos, Aegean Arc, Greece Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Study Of Scale Deposition- An Analogue Of Meso- To Epithermal Ore Formation In The Volcano Of Milos, Aegean Arc, Greece Details Activities (0) Areas (0) Regions (0) Abstract: The viability of boiling as a mechanism for meso- to epithermal ore formation has been tested in the Milos volcano, Aegean Island Arc, by investigating rates of deposition and composition of scale, and by drawing an analogy between the results and actual field occurrences on the island. Milos offers ideal conditions for such testing: it consists of predominantly felsic volcanic rocks with numerous late-stage hydrovolcanic

234

Anatomy Of A Middle Miocene Valles-Type Caldera Cluster- Geology Of The  

Open Energy Info (EERE)

Anatomy Of A Middle Miocene Valles-Type Caldera Cluster- Geology Of The Anatomy Of A Middle Miocene Valles-Type Caldera Cluster- Geology Of The Okueyama Volcano-Plutonic Complex, Southwest Japan Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Anatomy Of A Middle Miocene Valles-Type Caldera Cluster- Geology Of The Okueyama Volcano-Plutonic Complex, Southwest Japan Details Activities (0) Areas (0) Regions (0) Abstract: A deeply eroded root of a Miocene Valles-type caldera cluster is exposed in the Okueyama volcano-plutonic complex in Kyushu, southwest Japan. The complex shows the relationship between an ash-flow caldera and a vertically zoned granitic batholith. The igneous activity of this complex began with the eruption of the Sobosan dacitic tuff and collapse of the Sobosan cauldron (18 _ 13 km). After an erosion interval, the Katamukiyama

235

Internal Structure Of Puna Ridge- Evolution Of The Submarine East Rift Zone  

Open Energy Info (EERE)

Internal Structure Of Puna Ridge- Evolution Of The Submarine East Rift Zone Internal Structure Of Puna Ridge- Evolution Of The Submarine East Rift Zone Of Kilauea Volcano, Hawaii Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Internal Structure Of Puna Ridge- Evolution Of The Submarine East Rift Zone Of Kilauea Volcano, Hawaii Details Activities (3) Areas (1) Regions (0) Abstract: Multichannel seismic reflection, sonobuoy, gravity and magnetics data collected over the submarine length of the 75 km long Puna Ridge, Hawaii, resolve the internal structure of the active rift zone. Laterally continuous reflections are imaged deep beneath the axis of the East Rift Zone (ERZ) of Kilauea Volcano. We interpret these reflections as a layer of abyssal sediments lying beneath the volcanic edifice of Kilauea. Early

236

A Preparation Zone For Volcanic Explosions Beneath Naka-Dake Crater, Aso  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » A Preparation Zone For Volcanic Explosions Beneath Naka-Dake Crater, Aso Volcano, As Inferred From Magnetotelluric Surveys Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Preparation Zone For Volcanic Explosions Beneath Naka-Dake Crater, Aso Volcano, As Inferred From Magnetotelluric Surveys Details Activities (0) Areas (0) Regions (0) Abstract: The 1st crater of Naka-dake, Aso volcano, is one of the most active craters in Japan, and known to have a characteristic cycle of activity that consists of the formation of a crater lake, drying-up of the

237

Jefferson Lab Science Series - Living and Working in the Freezer  

NLE Websites -- All DOE Office Websites (Extended Search)

Volcanoes in Virginia! Volcanoes in Virginia! Previous Video (Volcanoes in Virginia!) Science Series Video Archive Next Video (You Already Know This Physics!) You Already Know This Physics! Living and Working in the Freezer Dr. Victoria Hill - Old Dominion University, Bio-Optics Group February 7, 2012 Very little data of any kind exists from the early spring in the Arctic. The reason? It's extremely cold and that makes it difficult to survive, let alone conduct science. From March through the end of April, 2011, scientists from around the world braved temperatures of -48°C in the high Canadian Arctic in the name of science. At the Catlin Arctic Survey's floating 'Ice Base' off Ellef Ringnes Island, Dr. Victoria Hill was investigating how organic material in fresh water near the surface of the

238

Accidental Gas Emission From Shallow Pressurized Aquifers At Alban Hills  

Open Energy Info (EERE)

Accidental Gas Emission From Shallow Pressurized Aquifers At Alban Hills Accidental Gas Emission From Shallow Pressurized Aquifers At Alban Hills Volcano (Rome, Italy)- Geochemical Evidence Of Magmatic Degassing? Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Accidental Gas Emission From Shallow Pressurized Aquifers At Alban Hills Volcano (Rome, Italy)- Geochemical Evidence Of Magmatic Degassing? Details Activities (0) Areas (0) Regions (0) Abstract: Recent studies suggested that Alban Hills (Rome) is a quiescent and not an extinct volcano, as it produced Holocene eruptions and several lahars until Roman times by water overflow from the Albano crater lake. Alban Hills are presently characterized by high PCO2 in groundwaters and by several cold gas emissions usually in sites where excavations removed the

239

Definition: Cinder Cone | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Cinder Cone Jump to: navigation, search Dictionary.png Cinder Cone Cinder cones, also known as scoria or spatter cones, are a relatively simple type of volcano consisting of a steep conical pile of volcanic ash and tephra. They exhibit a lower profile than stratovolcanoes (usually rising no more than a thousand feet above the surrounding topography), and typically have a bowl-shaped depression at their summits. They form primarily from the eruption of pyroclastic ejecta and are commonly encountered on the flanks of stratovolcanoes, shield volcanoes, and calderas.[2] View on Wikipedia Wikipedia Definition Also Known As Scoria Cones, Spatter Cones References ↑ John Watson. Principal Types of Volcanoes [Internet]. 2011. U.S.

240

Applications of the VLF Induction Method For Studying Some Volcanic  

Open Energy Info (EERE)

the VLF Induction Method For Studying Some Volcanic the VLF Induction Method For Studying Some Volcanic Processes of Kilauea Volcano, Hawaii Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Applications Of The Vlf Induction Method For Studying Some Volcanic Processes Of Kilauea Volcano, Hawaii Details Activities (1) Areas (1) Regions (0) Abstract: The very low-frequency (VLF) induction method has found exceptional utility in studying various volcanic processes of Kilauea volcano, Hawaii because: (1) significant anomalies result exclusively from ionically conductive magma or still-hot intrusions (> 800°C) and the attendant electrolytically conductive hot groundwater; (2) basalt flows forming the bulk of Kilauea have very high resistivities at shallow depths that result in low geologic noise levels and relatively deep depths of

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Newberry EGS Demonstration Project Environmental Analysis (EA)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Newberry Volcano Enhanced Geothermal System (EGS) Demonstration Project UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF LAND MANAGEMENT (BLM) DOI-BLM-OR-P000-2011-0003-EA DOE/EA-1897 ENVIRONMENTAL ASSESSMENT DECEMBER 2011 Location: Federal Geothermal Leases on the West Flank of Newberry Volcano, Deschutes County, 22 miles south of Bend, Oregon Applicant: Davenport Newberry Holdings LLC and AltaRock Energy, Inc. 225 NW Franklin Avenue, Suite 1 Bend, OR 97701 Tel: 541-323-1190 Lead Agency: U.S. Department of the Interior,

242

Geothermal areas as analogues to chemical processes in the near-field and altered zone of the potential Yucca Mountain, Nevada repository  

SciTech Connect

The need to bound system performance of the potential Yucca Mountain repository for thousands of years after emplacement of high-level nuclear waste requires the use of computer codes. The use of such codes to produce reliable bounds over such long time periods must be tested using long-lived natural and historical systems as analogues. The geothermal systems of the Taupo Volcanic Zone (TVZ) in New Zealand were selected as the site most amenable to study. The rocks of the TVZ are silicic volcanics that are similar in composition to Yucca Mountain. The area has been subjected to temperatures of 25 to 300 C which have produced a variety of secondary minerals similar to those anticipated at Yucca Mountain. The availability of rocks, fluids and fabricated materials for sampling is excellent because of widespread exploitation of the systems for geothermal power. Current work has focused on testing the ability of the EQ3/6 code and thermodynamic data base to describe mineral-fluid relations at elevated temperatures. Welfare starting long-term dissolution/corrosion tests of rocks, minerals and manufactured materials in natural thermal features in order to compare laboratory rates with field-derived rates. Available field data on rates of silica precipitation from heated fluids have been analyzed and compared to laboratory rates. New sets of precipitation experiments are being planned. The microbially influenced degradation of concrete in the Broadlands-Ohaaki geothermal field is being characterized. The authors will continue to work on these projects in FY 1996 and expand to include the study of naturally occurring uranium and thorium series radionuclides, as a prelude to studying radionuclide migration in heated silicic volcanic rocks. 32 refs.

Bruton, C.J.; Glassley, W.E.; Meike, A.

1995-02-01T23:59:59.000Z

243

Save With Solar, Fall 1998, Vol. 1, No. 3  

Science Conference Proceedings (OSTI)

This issue of Save with Solar highlights awards for federal renewable energy projects in FY 1998, the Million Solar Roofs Initiative, a special exhibition in New York City featuring solar technologies, PV systems working in Volcanoes National Park, and PV Super ESPC contracts.

Eiffert, P.

1998-12-30T23:59:59.000Z

244

12008 Tribal Leadership Summit Universit y of Washington  

E-Print Network (OSTI)

and Shiveluch in Kamchatka and Cleveland in the Aleutian Islands. Non-eruptive activity was common throughout our simulation period at a number of volcanoes in Iceland, Kamchatka, and the Aleutian Islands-troposphere. The volcanic influence arises primarily from the Aleutian Islands and Kamchatka, where non-eruptive volcanism

Kaminsky, Werner

245

A new hydrothermal scenario for the 2006 Lusi eruption, Indonesia. Insights from gas geochemistry  

E-Print Network (OSTI)

acquired a wide set of data of molecular and isotopic composition of gas sampled in several Lusi vents, in the surrounding mud volcanoes, in the closest natural gas field (Wunut), and in the hydrothermal ventsA new hydrothermal scenario for the 2006 Lusi eruption, Indonesia. Insights from gas geochemistry

Mazzini, Adriano

246

UNITED STATES NUCLEAR WASTE TECHNICAL REVIEW BOARD  

E-Print Network (OSTI)

figures. 785 Earthquake and volcano clustering via stress transfer at Yucca Mountain, Nevada Tom Parsons U intrusions at Crater Flat. How- ever, when we allowed central Yucca Mountain faults to slip in the model, we found that magmatic clustering was not favored at Crater Flat or in the central Yucca Mountain block

247

Solid modeling techniques to build 3D finite element models of volcanic systems: An example from the Rabaul Caldera system, Papua New Guinea  

Science Conference Proceedings (OSTI)

Simulating the deformation of active volcanoes is challenging due to inherent mechanical complexities associated with heterogeneous distributions of rheologic properties and irregular geometries associated with the topography and bathymetry. From geologic ... Keywords: 3D geometry, Deformation, Finite Elements Models, Rabaul Caldera

Erika Ronchin, Timothy Masterlark, Joan Mart Molist, Steve Saunders, Wei Tao

2013-03-01T23:59:59.000Z

248

scripps institution of oceanography, university of california, san diego Cecil H. & Ida M. Green Institute of Geophysics & Planetary Physics  

E-Print Network (OSTI)

a direct hit on the island of Kauai. Over a period of only three hours, the category-3 hurricane caused for relatively rare central Pacific hurricanes. Although Kauai has been impacted by three hurricanes since have arisen; such as "the volcanoes protect us," "only Kauai gets hit," or "there is no Hawaiian word

Constable, Steve

249

Gaia's breath--global methane exhalations Keith A. Kvenvolden*, Bruce W. Rogers  

E-Print Network (OSTI)

the Dead Sea, and burning gas (methane) seeps in the Baku region of Azerbaijan were sites of fire complex in Azerbaijan that has been described in detail by Hovland et al. (1997). Azerbaijan is the world than 300 mud volcanoes located onshore of eastern Azerbaijan and offshore in the adjacent Caspian Sea

250

PROPOSITION DE THESE du 15 Fvrier 2010  

E-Print Network (OSTI)

. However, this analysis, dominated by eruptions in Azerbaijan, also shows that most eruptions. (2007), based on an analysis of mud volcanoes in Azerbaijan, that a period of 1­2 years is required, Azerbaijan 28-Jan-1872 5.7 24 Mellors et al. (2007) Shikhzairli, Azerbaijan 28-Jan-1872 5.7 40 Mellors et al

Vallée, Martin

251

STcorr: An IDL code for image based normalization of lapse rate and illumination effects on nighttime TIR imagery  

Science Conference Proceedings (OSTI)

Thermal infrared imagery (TIR) is a useful tool to detect and quantify the surface temperature anomalies associated with geothermal fields. Accurate detection of anomalies in surface temperature is an important aspect of geothermal research. Although ... Keywords: ASTER, Illumination, Nemrut volcano, Normalization, Thermal infrared, Topographic

?Nan Ulusoy; Philippe Labazuy; Erkan Aydar

2012-06-01T23:59:59.000Z

252

The use of social media within the global disaster alert and coordination system (GDACS)  

Science Conference Proceedings (OSTI)

The Global Disaster Alert and Coordination System (GDACS) collects near real-time hazard information to provide global multi-hazard disaster alerting for earthquakes, tsunamis, tropical cyclones, floods and volcanoes. GDACS alerts are based on calculations ... Keywords: disaster management, emergency response, impact analysis, social media, twitter

Beate Stollberg; Tom de Groeve

2012-04-01T23:59:59.000Z

253

Experimental and analytic modeling of piercement structures A. Nermoen,1  

E-Print Network (OSTI)

in the Karoo Basin (South Africa), pipes containing fine grained fluidized sand are observed and an occurrence: the Lusi mud volcano (Indonesia), hydrothermal vent complexes in Karoo (South Africa), pockmarks (off Karoo [Svensen et al., 2006] and kimberlite pipes [Walters et al., 2006] with a dipping angle 65o ; 2

Galland, Olivier

254

How are saucer-shaped sills emplaced? Constraints from the Golden Valley Sill, South Africa  

E-Print Network (OSTI)

complexes in the Karoo Basin (South Africa)), pipes containing finegrained fluidized sand are observed vent complex, Karoo Basin, South Africa [after Svensen et al., 2006]. (c) Mud volcano Azerbaijan [after), hydrothermal vent complexes in Karoo (South Africa), pockmarks (off- shore Norway) and kimberlites (Venetia

Ferré, Eric

255

The Heavy Rain Event of 29 October 2000 in Hana, Maui  

Science Conference Proceedings (OSTI)

On 29 October 2000, the Hana region of Maui received 700 mm of rain in 7 h. Radar analyses revealed that the storm consisted of seven cells that were initiated along the southeast slope of Haleakala volcano. One of these cells survived for nearly ...

Ryan E. Lyman; Thomas A. Schroeder; Gary M. Barnes

2005-08-01T23:59:59.000Z

256

J. Ceomag. Geoelectr., 49, 1327-1342, 1997 Seafloor Electromagnetic Measurements above Axial Seamount,  

E-Print Network (OSTI)

in fractures or pipes. 1. Introduction AxialSeamountlieson the Juan deFucaRidge,about 500km westof-Eickelberg Seamount Chain (Johnson and Embley, 1990).Basalts fromAxial Seamount are broadly similar to those from-ocean ridge basalt (MORB) affinity. The volcano is the shallowestpart of the Juan de Fuca Ridge, indicating

Constable, Steve

257

How we know what's inside the Earth ? Astronomy -Physics  

E-Print Network (OSTI)

· Earth's delivery service ­ Kimberlite Pipes and Xenoliths ­ Volcanoes · Seismic data ­ Vibrational than 200 Ma) average chemical composition is similar to basalt density: 3.0 g/cm3 Isostasy: The less of upwelling (oceanic ridges) ultramafic rock (peridotite) partially melts to form mafic magma (basalt) mafic

Siebel, Wolfgang

258

Seismic imaging for velocity and attenuation structure in geothermal fields  

DOE Green Energy (OSTI)

We have applied the attenuation inversion technique developed by Evans and Zucca (1988) to a seismic tomographic data set taken at Newberry Volcano by Achauer et al. (1988). Our preliminary results suggest that the interpretation of the velocity data by Achauer et al. that a magma chamber is present 3 km beneath the caldera is not confirmed by the attenuation data.

Zucca, J.J. (Lawrence Livermore National Lab., CA (USA)); Evans, J.R. (Geological Survey, Menlo Park, CA (USA))

1989-06-01T23:59:59.000Z

259

Seismic imaging of the Medicine Lake Caldera  

DOE Green Energy (OSTI)

Medicine Lake Volcano, a broad shield volcano about 50 km east of Mount Shasta in northern California, produced rhylotic eruptions as recently as 400 years ago. Because of this recent activity it is of considerable interest to producers of geothermal energy. The USGS and LLNL conducted an active seismic experiment designed to explore the area beneath and around the caldera. This experiment had two purposes: To produce high-quality velocity and attenuation images of the young magma body presumed to be the source for the young volcanic features, and to collect a dataset that can be used to develop and test seismic imaging methods that may be useful for understanding other geothermal systems. Eight large explosions were detonated in a 50 km radius circle around the volcano, a distance chosen to produce strong upward traveling signals through the area of interest. The data were inverted using Aki's method to produce three-dimensional velocity and attenuation images of the sub-surface. Preliminary interpretation shows low velocity and attenuation on the flanks of the volcano, and coincident high attenuation values and low velocities (-20%) from 3 to 5 km beneath the center of the caldera. This zone may be a region of partial melt which fed the youngest eruptions.

Zucca, J.J.; Evans, J.R.; Kasameyer, P.W.

1987-04-01T23:59:59.000Z

260

Mobile and Ubiquitous Computing Sensor network applications and  

E-Print Network (OSTI)

of the forest? SELECT SUM(s) FROM SensorData s WHERE s.nest = empty and s.loc in (50,50,100,100) Long and biological sensors fire, earthquake emergencies vehicle tracking, traffic control surveillance of city in Hawaii Volcanoes National Park University of Hawaii monitor micro-climates in areas with endangered

Roussos, George

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Resuspension of Relic Volcanic Ash and Dust from Katmai: Still an Aviation Hazard  

Science Conference Proceedings (OSTI)

Northwest winds were strong enough to continuously resuspend relic volcanic ash from the Katmai volcano cluster and the Valley of Ten Thousand Smokes on 2021 September 2003. The ash cloud reached over 1600 m and extended over 230 km into the ...

David Hadley; Gary L. Hufford; James J. Simpson

2004-10-01T23:59:59.000Z

262

Scavenging of Aerosol Particles by Precipitation  

Science Conference Proceedings (OSTI)

Airborne measurements have been made of aerosol particle size distributions (>0.01 ?m) in aged air masses, in the plumes from several coal power plants and a large Kraft paper mill, and in the emissions from a volcano, before and after rain or ...

Lawrence F. Radke; Peter V. Hobbs; Mark W. Eltgroth

1980-06-01T23:59:59.000Z

263

2008 Macmillan Publishers Limited. All rights reserved. 2008 Macmillan Publishers Limited. All rights reserved. RESEARCH HIGHLIGHTS  

E-Print Network (OSTI)

, suggests a new study. Amy Barr of the Southwest Research Institute, Colorado conducted numerical the eruption by stirring and shaking the magma chamber beneath the volcano. Gidon Baer of the Geological Survey, and colleagues used unmanned aerial vehicles to measure cloud microphysics, aerosol distributions and solar

Barr, Amy C.

264

Paleomagnetism of the Quaternary Cerro Prieto, Crater Elegante, and Salton Buttes volcanic domes in the northern part of the Gulf of California rhombochasm  

DOE Green Energy (OSTI)

Deviating thermomagnetic directions in volcanics representing the second and fifth or sixth pulse of volcanism suggest that the Cerro Prieto volcano originated about 110,000 years B.P. and continued to be active intermittently until about 10,000 years ago.

de Boer, J.

1980-02-01T23:59:59.000Z

265

Preliminary studies for geothermal exploration in Hawaii, 1973--1975  

DOE Green Energy (OSTI)

The first volume of the series on geothermal exploration in Hawaii is a compilation of information and data relevant to geothermal resources, which are available prior to the commencement of the exploration program. A narrative account of the exploration program puts into perspective the various stages of the exploration program from 1973 to 1975. The value of this narrative account lies in that it shows how the conclusion was reached to concentrate the exploration program on the east rift of Kilauea volcano as that rift zone showed the most promise of all the volcanic centers and rift zones. The narrative ends at the selection of a drilling site. The geology and hydrology of the east rift was summarized to include data existing before the exploration program and some of the early results of the field surveys. A literature survey of Kilauea volcano attempted to cover the information available on the volcano. A literature survey of the geothermal potential of the volcanoes on the island of Oahu has already been published elsewhere. A short summary and reference is included in the volume.

Furumoto, A.S.; MacDonald, G.A.; Druecker, M.; Fan, P.F.

1977-12-01T23:59:59.000Z

266

Rapid response to the Chaiten eruption, Chile, May 2008: ash fallout and impact  

E-Print Network (OSTI)

Rapid response to the Chaiten eruption, Chile, May 2008: ash fallout and impact David Pyle AGU, 90 (24), 205-7, 16 June 2009. #12;Satellite imagery records widespread ash fallout across central eruption of rhyolite since Katmai (1912). #12;Thick fallout deposits near Chaiten volcano (January 2009

267

Siderophile metal fallout to Greenland from the 1991 winter eruption of Hekla (Iceland) and during the global atmospheric perturbation of Pinatubo  

E-Print Network (OSTI)

Siderophile metal fallout to Greenland from the 1991 winter eruption of Hekla (Iceland) and during layers. However, volcanic and anthropogenic fallouts have the potential to perturb their characteristic originated from the fallout to Greenland of volcanic ash emitted by the nearby Hekla volcano (Iceland

Howat, Ian M.

268

May Experience 2012: Full Slate of Study Away Programs 1. Iceland: Land of Fire and Ice  

E-Print Network (OSTI)

island of Iceland to explore active volcanoes, historic lava fields, roaring rivers, deep canyons information. 3. Places and Spaces of Early U.S. Controversy: Philadelphia and Washington, D.C. {PROGRAM with these cities and their constructed spaces of power, participants will complete original archival research

269

Volume 1, Issue 6 While conducting research in Indonesia, Associate Professor Amanda Clarke  

E-Print Network (OSTI)

Volume 1, Issue 6 While conducting research in Indonesia, Associate Professor Amanda Clarke, Indonesia that suddenly erupted on May 29, 2006. The world's fastest growing mud volcano was dubbed LUSI drama Mud Max that explores the impacts of natural disasters in Indonesia with a special emphasis

Shumway, John

270

Geodetic Investigation into the Deformational Makeup of the Salton Trough1 Brendan W. Crowell, Yehuda Bock, David T. Sandwell, and Yuri Fialko3  

E-Print Network (OSTI)

.e.258 Wister fault) along the eastern edge of the Salton Sea, an area dominated by mud volcanoes and259 for irrigation and geothermal plants [Lachenbruch et al., 1985; Lynch and49 Hudnut, 2008].50 Seismically been partially successful in the areas north of the Salton Sea, but less63 effective to the south

Sandwell, David T.

271

Heavy Rain Events over the South-Facing Slopes of Hawaii: Attendant Conditions  

Science Conference Proceedings (OSTI)

Heavy rain events (>100 mm day?1) over the southeast flank of Mauna Loa volcano on the island of Hawaii are examined using surface, rawinsonde, rain gauge, and satellite data. The events occur in the presence of four types of synoptic-scale ...

Kevin Kodama; Gary M. Barnes

1997-06-01T23:59:59.000Z

272

Stream data gathering in wireless sensor networks within expected lifetime  

Science Conference Proceedings (OSTI)

Sensor networks aim at collecting important sensor data for environment monitoring, e-health or hazardous conditions. Some applications do not need sensor networks with a long lifetime, such as monitoring an erupting volcano or monitoring hazardous conditions. ... Keywords: expected lifetime, sensor network, stream data gathering

Lei Shu; Zhangbing zhou; Antonio Aguilar; Manfred Hauswirth

2007-08-01T23:59:59.000Z

273

Towards the Use of Collaborative Virtual Environments to Crew Unmanned Oil Platforms  

E-Print Network (OSTI)

, Oil & Gas. 1. Introduction The use of Computer Graphics and Virtual Reality has revolutionised several, we mean places of difficult access where men have to "act": space, volcanoes, subsea oil exploration, among others. Due to the extremely competitive nature of the oil & gas business, probably the major

Barbosa, Alberto

274

Volcanic Ash Transport from Mount Asama to the Tokyo Metropolitan Area Influenced by Large-Scale Local Wind Circulation  

Science Conference Proceedings (OSTI)

The eruption of the Mount Asama volcano on 16 September 2004 produced an ash cloud and led to ashfall in the Tokyo metropolitan area that lies on the Kanto Plain. Satellite images showed the ash cloud drifting toward the south in the morning but ...

Nobumitsu Tsunematsu; Tomohiro Nagai; Toshiyuki Murayama; Ahoro Adachi; Yasuhiro Murayama

2008-04-01T23:59:59.000Z

275

Eruptive and Geomorphic Processes at the Lathrop Wells Scoria Cone  

Science Conference Proceedings (OSTI)

The {approx}80 ka Lathrop Wells volcano (southern Nevada, U.S.A.) preserves evidence for a range of explosive processes and emplacement mechanisms of pyroclastic deposits and lava fields in a small-volume basaltic center. Early cone building by Strombolian bursts was accompanied by development of a fan-like lava field reaching {approx}800 m distance from the cone, built upon a gently sloping surface. Lava flows carried rafts of cone deposits, which provide indirect evidence for cone facies in lieu of direct exposures in the active quarry. Subsequent activity was of a violent Strombolian nature, with many episodes of sustained eruption columns up to a few km in height. These deposited layers of scoria lapilli and ash in different directions depending upon wind direction at the time of a given episode, reaching up to {approx}20 km from the vent, and also produced the bulk of the scoria cone. Lava effusion migrated from south to north around the eastern base of the cone as accumulation of lavas successively reversed the topography at the base of the cone. Late lavas were emplaced during violent Strombolian activity and continued for some time after explosive eruptions had waned. Volumes of the eruptive products are: fallout--0.07 km{sup 3}, scoria cone--0.02 km{sup 3}, and lavas--0.03 km{sup 3}. Shallow-derived xenolith concentrations suggest an upper bound on average conduit diameter of {approx}21 m in the uppermost 335 m beneath the volcano. The volcano was constructed over a period of at least seven months with cone building occurring only during part of that time, based upon analogy with historical eruptions. Post-eruptive geomorphic evolution varied for the three main surface types that were produced by volcanic activity: (1) scoria cone, (2) low relief surfaces (including lavas) with abundant pyroclastic material, and (3) lavas with little pyroclastic material. The role of these different initial textures must be accounted for in estimating relative ages of volcanic surfaces, and failure to account for this resulted in previous erroneous interpretation that the volcano is polycyclic (eruptions separated by 1,000s-10,000s of years). Lathrop Wells volcano provides an example of the wide range of eruptive processes that can occur with little change in major element composition; the variation in explosive and effusive processes, including their simultaneous occurrence, must result entirely from fluid dynamic, crystallization, and degassing processes in the ascending multiphase magma. The volcano also provides key analog information regarding processes that are important for volcanic risk assessment at the proposed Yucca Mountain radioactive waste repository, {approx}18 km north of the volcano.

G. Valentine; D.J. Krier; F.V. Perry; G. Heiken

2006-08-03T23:59:59.000Z

276

Comment on Origin of Groundwater Discharge at Fall River Springs  

SciTech Connect

I'm writing at the request of the Pit River Tribe to offer my professional opinion as a geochemist regarding the origin of groundwater discharge at the Fall River Springs, Shasta Co., California. In 1997, I conducted a study of the large volume cold springs associated with the Cascade Volcanoes in northern California, in collaboration with one of my colleagues. This work was published as a Lawrence Livermore National Laboratory report (Davisson and Rose, 1997). The Fall River Springs emerge from the distal end of the Giant Crater Lava Field, a laterally extensive basalt flow that stretches from the southern flank of Medicine Lake Volcano southward for a distance of 40 km. Both Medicine Lake Volcano and the Giant Crater Lava Field have virtually no surface water drainages. Precipitation that falls in these areas is inferred to seep into fractures in the rock, where it is carried down gradient under the force of gravity. Mean annual precipitation rates on Medicine Lake Volcano and the Giant Crater Lava field are adequate to account for the {approx}1200 ft{sup 3}/sec discharge of the Fall River Springs. To evaluate the origin of the springs using geochemical methods, water samples were collected from the Fall River Springs and the Medicine Lake highlands and analyzed for oxygen and hydrogen isotope ratios. The isotope ratios measured for a groundwater sample are diagnostic of the average composition of the precipitation from which the water was derived. The isotope ratios of rain and snow also vary systematically with elevation, such that groundwater derived from recharge at higher elevations can be distinguished from that which originated at lower elevations. The stable isotope data for the Fall River Springs are consistent with groundwater recharge on the Medicine Lake Volcano and adjacent lava field. Mass balance calculations suggest that approximately half of the Fall River Springs flow is derived from the volcanic edifice. Rose and Davisson (1996) showed that the large volume cold springs associated with the Cascade Volcanoes commonly contain dissolved CO{sub 2} that originated from the volcanoes. This volcanic CO{sub 2} component is readily identified from carbon-14 measurements of the water. Carbon-14 analyses of the Fall River samples indicate that at least 27% of the dissolved inorganic carbon in the springs was derived from a volcanic CO{sub 2} source. Such a large volcanic CO{sub 2} flux requires that the groundwater supplying flow to the Fall River Springs must originate from a volcano where magma degassing is actively occurring. Given the hydrogeologic configuration of the Fall River aquifer system, it appears that the Medicine Lake Volcano is the only likely source of the volcanic CO{sub 2}. These data independently confirm the Medicine Lake highlands as a significant recharge source for the Fall River Springs. Moreover, these data indicate that groundwater recharge occurring on Medicine Lake Volcano must interact with a CO{sub 2} volatile phase derived from the geothermal system beneath the volcano. The lack of hot springs on Medicine Lake Volcano suggests that the geothermal system underlying the volcano is relatively tightly sealed. Nevertheless, it is probable that the geothermal fluid originates from precipitation falling on the volcanic edifice. This is the same water that supplies an important fraction of the Fall River Spring discharge. The source of the geothermal fluid can be evaluated using stable isotopes. The oxygen isotope signature of the geothermal fluid may have been modified by high temperature oxygen isotope exchange with the surrounding rock, but the hydrogen isotope signature should still be diagnostic of the origin of the fluid. Although the geothermal system appears to be largely decoupled from the shallow groundwater system that supplies the Fall River Springs, it is uncertain what impact the development of the geothermal system as an energy resource would have on groundwater circulation patterns on the volcano. Given the importance of the Fall River Springs as a water resource for the

Rose, T

2006-10-20T23:59:59.000Z

277

Comment on Origin of Groundwater Discharge at Fall River Springs  

Science Conference Proceedings (OSTI)

I'm writing at the request of the Pit River Tribe to offer my professional opinion as a geochemist regarding the origin of groundwater discharge at the Fall River Springs, Shasta Co., California. In 1997, I conducted a study of the large volume cold springs associated with the Cascade Volcanoes in northern California, in collaboration with one of my colleagues. This work was published as a Lawrence Livermore National Laboratory report (Davisson and Rose, 1997). The Fall River Springs emerge from the distal end of the Giant Crater Lava Field, a laterally extensive basalt flow that stretches from the southern flank of Medicine Lake Volcano southward for a distance of 40 km. Both Medicine Lake Volcano and the Giant Crater Lava Field have virtually no surface water drainages. Precipitation that falls in these areas is inferred to seep into fractures in the rock, where it is carried down gradient under the force of gravity. Mean annual precipitation rates on Medicine Lake Volcano and the Giant Crater Lava field are adequate to account for the {approx}1200 ft{sup 3}/sec discharge of the Fall River Springs. To evaluate the origin of the springs using geochemical methods, water samples were collected from the Fall River Springs and the Medicine Lake highlands and analyzed for oxygen and hydrogen isotope ratios. The isotope ratios measured for a groundwater sample are diagnostic of the average composition of the precipitation from which the water was derived. The isotope ratios of rain and snow also vary systematically with elevation, such that groundwater derived from recharge at higher elevations can be distinguished from that which originated at lower elevations. The stable isotope data for the Fall River Springs are consistent with groundwater recharge on the Medicine Lake Volcano and adjacent lava field. Mass balance calculations suggest that approximately half of the Fall River Springs flow is derived from the volcanic edifice. Rose and Davisson (1996) showed that the large volume cold springs associated with the Cascade Volcanoes commonly contain dissolved CO{sub 2} that originated from the volcanoes. This volcanic CO{sub 2} component is readily identified from carbon-14 measurements of the water. Carbon-14 analyses of the Fall River samples indicate that at least 27% of the dissolved inorganic carbon in the springs was derived from a volcanic CO{sub 2} source. Such a large volcanic CO{sub 2} flux requires that the groundwater supplying flow to the Fall River Springs must originate from a volcano where magma degassing is actively occurring. Given the hydrogeologic configuration of the Fall River aquifer system, it appears that the Medicine Lake Volcano is the only likely source of the volcanic CO{sub 2}. These data independently confirm the Medicine Lake highlands as a significant recharge source for the Fall River Springs. Moreover, these data indicate that groundwater recharge occurring on Medicine Lake Volcano must interact with a CO{sub 2} volatile phase derived from the geothermal system beneath the volcano. The lack of hot springs on Medicine Lake Volcano suggests that the geothermal system underlying the volcano is relatively tightly sealed. Nevertheless, it is probable that the geothermal fluid originates from precipitation falling on the volcanic edifice. This is the same water that supplies an important fraction of the Fall River Spring discharge. The source of the geothermal fluid can be evaluated using stable isotopes. The oxygen isotope signature of the geothermal fluid may have been modified by high temperature oxygen isotope exchange with the surrounding rock, but the hydrogen isotope signature should still be diagnostic of the origin of the fluid. Although the geothermal system appears to be largely decoupled from the shallow groundwater system that supplies the Fall River Springs, it is uncertain what impact the development of the geothermal system as an energy resource would have on groundwater circulation patterns on the volcano. Given the importance of the Fall River Springs as a water resource for the

Rose, T

2006-10-20T23:59:59.000Z

278

A Multidisciplinary Approach To Detect Active Pathways For Magma Migration  

Open Energy Info (EERE)

Multidisciplinary Approach To Detect Active Pathways For Magma Migration Multidisciplinary Approach To Detect Active Pathways For Magma Migration And Eruption At Mt Etna (Sicily, Italy) Before The 2001 And 2002-2003 Eruptions Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Multidisciplinary Approach To Detect Active Pathways For Magma Migration And Eruption At Mt Etna (Sicily, Italy) Before The 2001 And 2002-2003 Eruptions Details Activities (0) Areas (0) Regions (0) Abstract: Two strong flank eruptions occurred in July-August 2001 and from late October 2002 to late January 2003 at Mt. Etna volcano. The two eruptions mainly involved the upper southern flank of the volcano, a particularly active area during the last 30 years, damaging several tourist facilities and threatening some villages. The composite eruptive activity

279

Conduction Models Of The Temperature Distribution In The East Rift Zone Of  

Open Energy Info (EERE)

Conduction Models Of The Temperature Distribution In The East Rift Zone Of Conduction Models Of The Temperature Distribution In The East Rift Zone Of Kilauea Volcano Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Conduction Models Of The Temperature Distribution In The East Rift Zone Of Kilauea Volcano Details Activities (2) Areas (1) Regions (0) Abstract: Temperature variations in the 1966-meter Hawaii Geothermal Project well HGP-A are simulated by model studies using a finite element code for conductive heat flow. Three models were generated: a constant temperature source from a vertical dike; a constant heat-generating magma chamber; and a transient heat source from a tapered vertical dike. Fair correlation is obtained between the HGP-A well temperature and the tapered dike 125 years after it is injected with an initial (transient) 1200°C

280

Thermal Gradient Holes At Kilauea Summit Area (Keller, Et Al., 1979) | Open  

Open Energy Info (EERE)

Thermal Gradient Holes At Kilauea Summit Area (Keller, Et Al., 1979) Thermal Gradient Holes At Kilauea Summit Area (Keller, Et Al., 1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal Gradient Holes At Kilauea Summit Area (Keller, Et Al., 1979) Exploration Activity Details Location Kilauea Summit Area Exploration Technique Thermal Gradient Holes Activity Date Usefulness useful DOE-funding Unknown Notes A deep borehole was drilled at the summit of Kilauea volcano, Hawaii, between April 6 and July 9, 1973. The hole is located approximately 1 km south of the edge of Halemaumau crater (Figs. 1 and 2), a crater within the summit caldera of the volcano. The total depth of the hole is 1262 m (4141 ft) measured from the derrick floor at an altitude of 1102 m (3616 ft). A description of the drilling program and some of the results obtained have

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

A Model For Syn-Eruptive Groundwater Flow During The Phreatoplinian Phase  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » A Model For Syn-Eruptive Groundwater Flow During The Phreatoplinian Phase Of The 28-29 March 1875 Askja Volcano Eruption, Iceland Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Model For Syn-Eruptive Groundwater Flow During The Phreatoplinian Phase Of The 28-29 March 1875 Askja Volcano Eruption, Iceland Details Activities (0) Areas (0) Regions (0) Abstract: We present a groundwater flow model that integrates geological observations, field data, effective permeabilities for fractured lava flows, and historical eyewitness records to explain the change from wet to

282

A Structural Model Guide For Geothermal Exploration In Ancestral Mount Bao,  

Open Energy Info (EERE)

Model Guide For Geothermal Exploration In Ancestral Mount Bao, Model Guide For Geothermal Exploration In Ancestral Mount Bao, Leyte, Philippines Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Structural Model Guide For Geothermal Exploration In Ancestral Mount Bao, Leyte, Philippines Details Activities (0) Areas (0) Regions (0) Abstract: The Tongonan Geothermal Field is the largest producing geothermal field in the Philippines having an installed capacity of 700 MW. It hosts several major power plants that tap geothermal power from the northern flank of the eroded Ancestral Mount Bao (AMB) volcano in Leyte Island, Philippines. A structural model guide is presented to delineate exploration targets in other flanks of the 1200 km2 area of the AMB volcano. If applied, the model constrains the coverage of geothermal exploration to

283

Teleseismic-Seismic Monitoring At Kilauea Summit Area (Keller, Et Al.,  

Open Energy Info (EERE)

At Kilauea Summit Area (Keller, Et Al., At Kilauea Summit Area (Keller, Et Al., 1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Teleseismic-Seismic Monitoring At Kilauea Summit Area (Keller, Et Al., 1979) Exploration Activity Details Location Kilauea Summit Area Exploration Technique Teleseismic-Seismic Monitoring Activity Date Usefulness useful DOE-funding Unknown Notes Kilauea volcano has high seismicity, most of which is associated with specific fault zones on the volcano and with movement of magma at depth (Koyanagi and Endo, 1971; Koyanagi et al., 1976). Certain groups of earthquakes have been observed at very shallow depths, however, and some of these have been concentrated in a zone that lies near the resistivity anomaly and the center of inflation. The data show that this shallow

284

Cinder Cone | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Cinder Cone Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Cinder Cone Dictionary.png Cinder Cone: Cinder cones, also known as scoria or spatter cones, are a relatively simple type of volcano consisting of a steep conical pile of volcanic ash and tephra. They exhibit a lower profile than stratovolcanoes (usually rising no more than a thousand feet above the surrounding topography), and typically have a bowl-shaped depression at their summits. They form primarily from the eruption of pyroclastic ejecta and are commonly encountered on the flanks of stratovolcanoes, shield volcanoes, and

285

Fumaroles | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Fumaroles Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Fumaroles Dictionary.png Fumaroles: An opening in the earth's crust, typically near a volcano, in which steam and hot sulfurous gasses are discharged. Other definitions:Wikipedia Reegle Modern Geothermal Features Typical list of modern geothermal features Hot Springs Fumaroles Warm or Steaming Ground Mudpots, Mud Pools, or Mud Volcanoes Geysers Blind Geothermal System Fumarole at Hverarond, Iceland (reference: http://www.mountainsoftravelphotos.com/Iceland/2006-07%20Iceland/Lake%20Myvatn/slides/Iceland%2007%2004%20Near%20Myvatn%20Hverarond%20Fumarole.html)

286

An Integrated Mapping And Remote Sensing Investigation Of The Structural  

Open Energy Info (EERE)

Mapping And Remote Sensing Investigation Of The Structural Mapping And Remote Sensing Investigation Of The Structural Control For Fumarole Location In The Eburru Volcanic Complex, Kenya Rift Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: An Integrated Mapping And Remote Sensing Investigation Of The Structural Control For Fumarole Location In The Eburru Volcanic Complex, Kenya Rift Details Activities (0) Areas (0) Regions (0) Abstract: The Eburru volcanic complex is located in the central portion of the Kenya Rift. It belongs to the complex of volcanoes - Suswa, Longonot, Olkaria, Eburru, and Menengai - that. form the Kenya Dome. These volcanoes are geothermal fields, and Olkaria is the site for the first geothermal power plant commissioned in 1981 in the East African Rift System (EARS).

287

Stratovolcano | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Stratovolcano Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Stratovolcano Dictionary.png Stratovolcano: Stratovolcanoes, also known as composite volcanoes, are conical volcanoes composed of multiple layers of intermediate to felsic lava, ash, and other volcanic debris. Their steep profiles are the result of the high viscosity of less mafic lavas, which prevents them from flowing great distances during eruption and cooling. Stratovolcanoes are commonly encountered in chains adjacent to subduction zones, where dewatering of the subducting slab and melting of the slab and overlying mantle rocks leads to magma

288

Seismological investigation of crack formation in hydraulic rock fracturing experiments and in natural geothermal environments. Progress report, September 1, 1978-August 31, 1979  

DOE Green Energy (OSTI)

An interpretation theory based on the fluid-filled crack model of geothermal systems is being developed and tested against a variety of data from various geothermal areas. Progress is reported on the following subjects: (1) analysis and interpretation of seismic data obtained from the bore holes at the LASL Hot Dry Rock geothermal site. (2) Collection, analysis and interpretation of data on deep volcanic tremors at the USGS Hawaii Volcano Observatory. (3) Development of a new method for determining seismic attenuation at frequencies higher than 1HZ, and initiation of a cooperative work with Mexican seismologists on the attenuation measurements at various geothermal areas in Baja, California using the method. (4) Installation of 3-component digital event-recorders at four stations in the Newberry Peak volcano, Oregon. (5) Developing a computer program for calculating seismic motion generated by the vibration of fluid-filled crack in a layered medium.

Aki, K.

1979-09-01T23:59:59.000Z

289

Volcanology and volcanic activity with a primary focus on potential hazard impacts for the Hawaii geothermal project  

DOE Green Energy (OSTI)

This annotated bibliography reviews published references about potential volcanic hazards on the Island of Hawaii that are pertinent to drilling and operating geothermal wells. The first two sections of this annotated bibliography list the most important publications that describe eruptions of Kilauea volcano, with special emphasis on activity in and near the designated geothermal subzones. References about historic eruptions from Mauna Loa`s northeast rift zone, as well as the most recent activity on the southern flank of dormant Mauna Kea, adjacent to the Humu`ula Saddle are described. The last section of this annotated bibliography lists the most important publications that describe and analyze deformations of the surface of Kilauea and Mauna Loa volcanoes.

Moore, R.B. [Federal Center, Denver, CO (United States); Delaney, P.T. [2255 North Gemini Drive, Flagstaff, AZ (United States); Kauahikaua, J.P. [Geological Survey, Hawaii National Park, HI (United States). Hawaiian Volcano Observatory

1993-10-01T23:59:59.000Z

290

Geology and geothermics of the Island of Milos (Greece)  

DOE Green Energy (OSTI)

Geothermal research which has been conducted on the island of Milos is reviewed and the island's geology is discussed in terms of the geodynamics of the eastern Mediterranean. The rock formations which outcrop at Milos are described in detail, including the crystalline basement, Neogene transgressive conglomerates and limestones, and the Quaternary volcanics and volcano-sedimentary series. The recent disjunctive tectonics and volcano-tectonics affecting Milos and the neighboring islands are reviewed. Thermal manifestations and their attendant mineralizations and hydrothermal alterations are described. The geophysical methods utilized in exploration and for the siting of production wells are described. Exploration work involved the drilling of 55 wells for thermometric determinations and a full scale electrical survey. Preliminary data from two production wells with bottom-hole temperatures in excess of 300/sup 0/C are reported. Fifty-four references are provided.

Fytikas, M.; Marinelli, G.

1976-01-01T23:59:59.000Z

291

Fumaroles | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Fumaroles (Redirected from Fumarole) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Fumaroles Dictionary.png Fumaroles: An opening in the earth's crust, typically near a volcano, in which steam and hot sulfurous gasses are discharged. Other definitions:Wikipedia Reegle Modern Geothermal Features Typical list of modern geothermal features Hot Springs Fumaroles Warm or Steaming Ground Mudpots, Mud Pools, or Mud Volcanoes Geysers Blind Geothermal System Fumarole at Hverarond, Iceland (reference: http://www.mountainsoftravelphotos.com/Iceland/2006-07%20Iceland/Lake%20Myvatn/slides/Iceland%2007%2004%20Near%20Myvatn%20Hverarond%20Fumarole.html)

292

Mantle Helium And Carbon Isotopes In Separation Creek Geothermal Springs,  

Open Energy Info (EERE)

Mantle Helium And Carbon Isotopes In Separation Creek Geothermal Springs, Mantle Helium And Carbon Isotopes In Separation Creek Geothermal Springs, Three Sisters Area, Central Oregon- Evidence For Renewed Volcanic Activity Or A Long Term Steady State System(Question) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Mantle Helium And Carbon Isotopes In Separation Creek Geothermal Springs, Three Sisters Area, Central Oregon- Evidence For Renewed Volcanic Activity Or A Long Term Steady State System(Question) Details Activities (1) Areas (1) Regions (0) Abstract: Here we present the helium and carbon isotope results from the initial study of a fluid chemistry-monitoring program started in the summer of 2001 near the South Sister volcano in central Oregon. The Separation Creek area which is several miles due west of the volcano is the locus of

293

Geology and geothermics of the Island of Milos (Greece)  

SciTech Connect

Geothermal research which has been conducted on the island of Milos is reviewed and the island's geology is discussed in terms of the geodynamics of the eastern Mediterranean. The rock formations which outcrop at Milos are described in detail, including the crystalline basement, Neogene transgressive conglomerates and limestones, and the Quaternary volcanics and volcano-sedimentary series. The recent disjunctive tectonics and volcano-tectonics affecting Milos and the neighboring islands are reviewed. Thermal manifestations and their attendant mineralizations and hydrothermal alterations are described. The geophysical methods utilized in exploration and for the siting of production wells are described. Exploration work involved the drilling of 55 wells for thermometric determinations and a full scale electrical survey. Preliminary data from two production wells with bottom-hole temperatures in excess of 300/sup 0/C are reported. Fifty-four references are provided.

Fytikas, M.; Marinelli, G.

1976-01-01T23:59:59.000Z

294

Spreading of viscous fluids and granular materials on slopes  

E-Print Network (OSTI)

Volcano, at the border of Argentina and Chile, taken from aboard the International Space Station (National Aeronautics and Space Administration, 2010). Several channels of deposited lava extend from the summit, which is elevated 6,739m above sea level. how... of the duct and propulsion of the inner contents. The motion is fundamental to many systems in biology, including the digestive system, which can be studied through mathematical models. 1.2 Mathematical motivation All of the physical examples presented above...

Takagi, Daisuke

2010-11-16T23:59:59.000Z

295

The Future of Geothermal Energy  

E-Print Network (OSTI)

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _2-3 2.2 EGS Resource-Base Calculation--Temperature-at-Depth Maps _ _ _ _ _ _ _2-5 2.2.1 Heat flow _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _2-26 2.4.1 Volcano system _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _2-26 2.5). It is likely that 50 GWe or more of coal-fired capacity will need to be retired in the next 15 to 25 years

Laughlin, Robert B.

296

Melt zones beneath five volcanic complexes in California: an assessment of shallow magma occurrences  

DOE Green Energy (OSTI)

Recent geological and geophysical data for five magma-hydrothermal systems were studied for the purpose of developing estimates for the depth, volume and location of magma beneath each area. The areas studied were: (1) Salton Trough, (2) The Geysers-Clear Lake, (3) Long Valley caldera, (4) Coso volcanic field, and (5) Medicine Lake volcano, all located in California and all selected on the basis of recent volcanic activity and published indications of crustal melt zones. 23 figs.

Goldstein, N.E.; Flexser, S.

1984-12-01T23:59:59.000Z

297

High Temperature Components of Magma-Related Geothermal Systems: An Experimental and Theoretical Approach  

DOE Green Energy (OSTI)

This summarizes select components of a multi-faceted study of high temperature magmatic fluid behavior in shallow, silicic, volcano-plutonic geothermal systems. This work built on a foundation provided by DOE-supported advances made in our lab in understanding the physics and chemistry of the addition of HCI and other chlorides into the high temperature regions of geothermal systems. The emphasis of this project was to produce a model of the bolatile contributions from felsic magmatic systems to geothermal systems

Philip A. Candela; Philip M. Piccoli

2004-03-15T23:59:59.000Z

298

Geothermal energy resource investigations in the Eastern Copper River Basin, Alaska  

DOE Green Energy (OSTI)

This report consists of a review of the geological, geochemical and geophysical data available for the Eastern Copper River basin with emphasis on the mud volcanoes, and the results of geophysical and geochemical studies carried out in the summers of 1982 and 1984. The purpose was to determine if there are geothermal energy resources in the Copper River Basin. The Eastern Copper River basin is situated on the flanks of a major volcano, Mt. Drum, which was active as late as 200,000 years ago and which is thought to have retained significant amounts of residual heat at high levels. Mt. Wrangell, farther to the east, has been volcanically active up to the present time. The 1982 geophysical and geochemical surveys located three principal areas of possible geothermal interest, one near Tazlina and two near the Klawasi mud volcanoes. The intensive survey work of 1984 was concentrated on those areas. We have integrated the results of soil helium, soil mercury, gravity, aeromagnetic, electrical, self-potential, and controlled-source audio magnetotelluric (CSAMT) surveys to evaluate the geothermal potential of the areas studied. 36 figs.

Wescott, E.M.; Turner, D.L.

1985-06-01T23:59:59.000Z

299

Cascade geothermal drilling/corehole N-1  

DOE Green Energy (OSTI)

Two core holes have been completed on the flanks of Newberry Volcano, Oregon. Core hole GEO N-1 has a heat flow of 180 mWm-2 reflecting subsurface temperature sufficient for commerical exploitation of geothermally generated electricity. GEO N-3, which has a heat flow of 86 mWm-2, is less encouraging. Considerable emphasis has been placed on the ''rain curtain'' effect with the hope that a detailed discussion of this phenomenon at two distinct localities will lead to a better understanding of the physical processes in operation. Core hole GEO N-1 was cored to a depth of 1387 m at a site located 9.3 km south of the center of the volcano. Core hole GEO N-3 was cored to a depth of 1220 m at a site located 12.6 km north of the center of the volcano. Both core holes penetrated interbedded pyroclastic lava flows and lithic tuffs ranging in composition from basalt to rhyolite with basaltic andesite being the most common rock type. Potassium-argon age dates range up to 2 Ma. Difficult drilling conditions were encountered in both core holes at depths near the regional water table. Additionally, both core holes penetrate three distinct thermal regimes (isothermal (the rain curtain), transition, and conductive) each having its own unique features based on geophysical logs, fluid geochemistry, age dates, and rock alteration. Smectite alteration, which seems to control the results of surface geoelectrical studies, begins in the isothermal regime close to and perhaps associated with the regional water table. 28 refs., 15 figs., 2 tabs.

Swanberg, C.A.; Combs, J. (Geothermal Resources International, Inc., San Mateo, CA (USA)); Walkey, W.C. (GEO Operator Corp., Bend, OR (USA))

1988-07-19T23:59:59.000Z

300

Cascade geothermal drilling/corehole N-3  

DOE Green Energy (OSTI)

Two core holes have been completed on the flanks of Newberry Volcano, Oregon. Core holes GEO N-1 has a heat flow of 180 mWm-2 reflecting subsurface temperature sufficient for commercial exploitation of geothermally generated electricity. GEO N-3, which has a heat flow of 86 mWm-2, is less encouraging. Considerable emphasis has been placed on the rain curtain'' effect with the hope that a detailed discussion of this phenomenon at two distinct localities will lead to a better understanding of the physical processes in operation. Core hole GEO N-1 was cored to a depth of 1387 m at a site located 9.3 km south of the center of the volcano. Core hole GEO N-3 was cored to a depth of 1220 m at a site located 12.6 km north of the center of the volcano. Both core holes penetrated interbedded pyroclastic lava flows and lithic tuffs ranging in composition from basalt to rhyolite with basaltic andesite being the most common rock type. Potassium-argon age dates range up to 2 Ma. Difficult drilling conditions were encountered in both core holes at depths near the regional water table. Additionally, both core holes penetrate three distinct thermal regimes (isothermal (the rain curtain), transition, and conductive) each having its own unique features based on geophysical logs, fluid geochemistry, age dates, and rock alteration. Smectite alteration, which seems to control the results of surface geoelectrical studies, begins in the isothermal regime close to and perhaps associated with the regional water table.

Swanberg, C.A.

1988-07-19T23:59:59.000Z

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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301

Modern Geothermal Features | Open Energy Information  

Open Energy Info (EERE)

Modern Geothermal Features Modern Geothermal Features Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Modern Geothermal Features Dictionary.png Modern Geothermal Features: Active geothermal manifestations such as hot springs, fumaroles, steaming ground, mud pots, mud pools, mud volcanoes, or geysers. Other definitions:Wikipedia Reegle When geothermal systems have conduits available to the surface, they cause surface manifestations (or geothermal features). These features may vary between steam seeps (fumaroles) or pure fluid manifestations (geysers and hot springs) causing spectacular mineral formations (e.g. sinter terraces, tufa mounds). These types of manifestations are clear indications of an underlying geothermal system. Geothermal systems with no modern surface

302

Direct-Current Resistivity At Lualualei Valley Area (Thomas, 1986) | Open  

Open Energy Info (EERE)

Lualualei Valley Area (Thomas, 1986) Lualualei Valley Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current Resistivity At Lualualei Valley Area (Thomas, 1986) Exploration Activity Details Location Lualualei Valley Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness useful DOE-funding Unknown Notes Three Schlumberger resistivity soundings were performed in Lualualei Valley (Mattice and Kauahikaua, 1979). K840 Interpretation of the resistivity soundings suggests that the source of the warm water layer within the valley was the dense dike complex associated with the ancient magma chamber of Waianae volcano. References Donald M. Thomas (1 January 1986) Geothermal Resources Assessment In Hawaii Retrieved from

303

Variability of black-hole accretion discs: a theoretical study  

E-Print Network (OSTI)

modified by over 400 active volcanoes. The Sun changes its spots during the 11-year cycle while other stars vary strongly in brightness as they pulsate. In the solar case, variability is intrinsic to the astrophysical object. It can also be extrinsic if, e... of relativistic compact objects with their surroundings. Measurements of X-ray variability and theoretical studies of black-hole disc accretion have therefore been intimately related for the past 30 or 40 years. Combined, they provide a unique window...

Ferreira, Brbara Trovo

2010-06-08T23:59:59.000Z

304

DOI-BLM-OR-P000-2011-0003-EA | Open Energy Information  

Open Energy Info (EERE)

3-EA 3-EA Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home NEPA Document Collection for: DOI-BLM-OR-P000-2011-0003-EA EA at Newberry Caldera Geothermal Area for Geothermal/Well Field Newberry Volcano Enhanced Geothermal System (EGS) Demonstration Project General NEPA Document Info Energy Sector Geothermal energy Environmental Analysis Type EA Applicant Davenport Power LLC Consultant PLS Environmental, LLC Geothermal Area Newberry Caldera Geothermal Area Project Location Oregon Project Phase Geothermal/Well Field Techniques Drilling Techniques Comments EGS demonstration project Time Frame (days) Application Time 692 NEPA Process Time 532 Participating Agencies Lead Agency BLM Funding Agency DOE Managing District Office BLM Prineville District Office

305

Flat | Open Energy Information  

Open Energy Info (EERE)

Flat Flat Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Flat Dictionary.png Flat: A relatively smooth landscape with no topographic relief Other definitions:Wikipedia Reegle Topographic Features List of topographic features commonly encountered in geothermal resource areas: Mountainous Horst and Graben Shield Volcano Flat Lava Dome Stratovolcano Cinder Cone Caldera Depression Resurgent Dome Complex The North Brawley Geothermal Power Plant is located in the Imperial Valley, California, a broad valley with flat topographic features. http://www.pcl.com/Projects-that-Inspire/Pages/North-Brawley-Geothermal-Power-Plant.aspx# Flat terrains are characterized by the absence of major topographic features. Flat topography is typically encountered in areas that have

306

A Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres,  

Open Energy Info (EERE)

Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres, Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres, Northwestern Spitsbergen- Volcanology And Tectonic Significance Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Primitive Alkali Basaltic Stratovolcano And Associated Eruptive Centres, Northwestern Spitsbergen- Volcanology And Tectonic Significance Details Activities (0) Areas (0) Regions (0) Abstract: Three Quaternary volcanic centres (Sverrefjell, Sigurdfjell and Halvdanpiggen) in northwestern Spitsbergen formed by off-ridge alkali basaltic volcanism associated with nearby ocean-floor spreading and subsequent tectonism. The Sverrefjell volcano is a unique stratovolcano constructed of primitive alkali basaltic pyroclastics with subordinate lavas. About 15-20 vol.% of this volcanic (and the other centres) comprises

307

Shining On: A primer on solar radiation data  

SciTech Connect

This document is a primer on solar radiation data. General uses of solar energy are presented. The manner in which solar radiation data is used to aid engineers in optimizing the use of solar thermal conversion and photovoltaic conversion is discussed. Methods for acquiring and assimilating the solar radiation data are illustrated. This would include the design and use of pyranometers and pyrheliometers. Seasonal and geographical variations in solar flux reaching the earth are evaluated. Other uses of compiled data include the determination of meteorological impacts of atmospheric disturbances such as volcano eruptions.

Dunlap, M.A.; Cook, G. [eds.; Marion, B.; Riordan, C.; Renne, D.

1992-05-01T23:59:59.000Z

308

Qualification Plan for Phase One of True-MidPacific Geothermal Venture: James Campbell - Kahaualea Project, Island of Hawaii  

DOE Green Energy (OSTI)

The objective of this project is to develop the geothermal resources of the James Campbell Estate, comprising acres in the Puna District of the Island of Hawaii. The geothermal resource is assumed to exist in the vicinity of the East Rift of the Kilauea volcano. The location of the proposed geothermal well field and the geothermal-electric power plant are shown on Dwg. No. E-04-001. Access to the project area will be provided by a new road extension from the boundary road south from Glenwood on Highway 11.

None

1981-06-01T23:59:59.000Z

309

Endangered languages database launched online  

E-Print Network (OSTI)

simmered like a chilly, bubbling cauldron with ice volcanoes, or has this distant moon gone dead? In a newly published ... Helping the heart help itself: Research points to new use for stem cells (PhysOrg.com) -- Human trials of stem cell therapy... on hot days: New research brings us closer (PhysOrg.com) -- New materials science research from the University at Buffalo could hasten the creation of "smart" windows that reflect heat from the sun on hot summer days but let in the heat in colder...

Anon.

2010-12-09T23:59:59.000Z

310

Direct-Current Resistivity Survey At Lualualei Valley Area (Thomas, 1986) |  

Open Energy Info (EERE)

Lualualei Valley Area (Thomas, 1986) Lualualei Valley Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current Resistivity Survey At Lualualei Valley Area (Thomas, 1986) Exploration Activity Details Location Lualualei Valley Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness useful DOE-funding Unknown Notes Three Schlumberger resistivity soundings were performed in Lualualei Valley (Mattice and Kauahikaua, 1979). K840 Interpretation of the resistivity soundings suggests that the source of the warm water layer within the valley was the dense dike complex associated with the ancient magma chamber of Waianae volcano. References Donald M. Thomas (1 January 1986) Geothermal Resources Assessment In Hawaii

311

Second workshop geothermal reservoir engineering: Proceedings  

DOE Green Energy (OSTI)

The Arab oil embargo of 1973 focused national attention on energy problems. A national focus on development of energy sources alternative to consumption of hydrocarbons led to the initiation of research studies of reservoir engineering of geothermal systems, funded by the National Science Foundation. At that time it appeared that only two significant reservoir engineering studies of geothermal reservoirs had been completed. Many meetings concerning development of geothermal resources were held from 1973 through the date of the first Stanford Geothermal Reservoir Engineering workshop December 15-17, 1975. These meetings were similar in that many reports dealt with the objectives of planned research projects rather than with results. The first reservoir engineering workshop held under the Stanford Geothermal Program was singular in that for the first time most participants were reporting on progress inactive research programs rather than on work planned. This was true for both laboratory experimental studies and for field experiments in producing geothermal systems. The Proceedings of the December 1975 workshop (SGP-TR-12) is a remarkable document in that results of both field operations and laboratory studies were freely presented and exchanged by all participants. With this in mind the second reservoir engineering workshop was planned for December 1976. The objectives were again two-fold. First, the workshop was designed as a forum to bring together researchers active in various physical and mathematical branches of the developing field of geothermal reservoir engineering, to give participants a current and updated view of progress being made in the field. The second purpose was to prepare this Proceedings of Summaries documenting the state of the art as of December 1976. The proceedings will be distributed to all interested members of the geothermal community involved in the development and utilization of the geothermal resources in the world. Many notable occurrences took place between the first workshop in December 1975 and this present workshop in December 1976. For one thing, the newly formed Energy Research and Development Administration (ERDA) has assumed the lead role in geothermal reservoir engineering research. The second workshop under the Stanford Geothermal Program was supported by a grant from ERDA. In addition, two significant meetings on geothermal energy were held in Rotarua, New Zealand and Taupo, New Zealand. These meetings concerned geothermal reservoir engineering, and the reinjection of cooled geothermal fluids back into a geothermal system. It was clear to attendees of both the New Zealand and the December workshop meetings that a great deal of new information had been developed between August and December 1976. Another exciting report made at the meeting was a successful completion of a new geothermal well on the big island of Hawaii which produces a geothermal fluid that is mainly steam at a temperature in excess of 600 degrees F. Although the total developed electrical power generating capacity due to all geothermal field developments in 1976 is on the order of 1200 megawatts, it was reported that rapid development in geothermal field expansion is taking place in many parts of the world. Approximately 400 megawatts of geothermal power were being developed in the Philippine Islands, and planning for expansion in production in Cerro Prieto, Mexico was also announced. The Geysers in the United States continued the planned expansion toward the level of more than 1000 megawatts. The Second Workshop on Geothermal Reservoir Engineering convened at Stanford December 1976 with 93 attendees from 4 nations, and resulted in the presentation of 44 technical papers, summaries of which are included in these Proceedings. The major areas included in the program consisted of reservoir physics, well testing, field development, well stimulation, and mathematical modeling of geothermal reservoirs. The planning forth is year's workshop and the preparation of the proceedings was carried out mainly by my associate Paul

Kruger, P.; Ramey, H.J. Jr. (eds.)

1976-12-03T23:59:59.000Z

312

Field geology of the northwest quarter of the Broken Top 15' quadrangle, Deschutes County, Oregon  

DOE Green Energy (OSTI)

The report is a compilation of geologic field observations and supporting laboratory data obtained during a study of the eastern slope of the High Cascade Range of Oregon, north of Broken Top volcano. General geologic relationships are summarized, then followed by lithologic descriptions, petrographic characteristics, and stratigraphic information, cross-indexed to tables of chemical analyses of pertinent rock units. The 7.5-minute N.W. Broken Top quadrange is bounded by 44/sup 0/07'30'' and 44/sup 0/15'00'' north latitude and by 121/sup 0/37'30'' and 121/sup 0/45'00'' west longitude, 6 km east of North and Middle Sister volcanoes and 35 km northwest of Bend. The quadrangle is covered by glacial till and calc-alkaline lavas, most of which originated on the adjacent slopes of the High Cascades. Basalt, basaltic andesite, andesite, and rhyodacite are represented in a variety of forms including lava flows, volcanic domes, cinder cones, and a welded ash-flow tuff.

Taylor, E.M.

1987-01-01T23:59:59.000Z

313

Alaska Open-file Report 144 Assessment of Thermal Springs Sites Aleutian Arc, Atka Island to Becherof Lake -- Preliminary Results and Evaluation  

DOE Green Energy (OSTI)

Twenty of more than 30 thermal spring areas reported to exist in the Aleutian arc extending from Atka Island to Becherof Lake were investigated during July and August, 1980. Thermal activity of three of these sites had diminished substantially or no longer existed. At least seven more sites where thermal-spring activity is probable or certain were not visited because of their remoteness or because of time constraints. The existence of several other reported thermal spring sites could not be verified; these sites are considered questionable. On the basis of geothermometry, subsurface reservoir temperatures in excess of 150 C are estimated for 10 of the thermal spring sites investigated. These sites all occur in or near regions of Recent volcanism. Five of the sites are characterized by fumaroles and steaming ground, indicating the presence of at least a shallow vapor-dominated zone. Two, the Makushin Valley and Glacier Valley thermal areas, occur on the flanks of active Mukushin Volcano located on Unalaska Island, and may be connected to a common source of heat. Gas geothermometry suggests that the reservoir feeding the Kliuchef thermal field, located on the flanks of Kliuchef volcano of northeast Atka Island, may be as high as 239 C.

Motyka, R.J.; Moorman, M.A.; Liss, S.A.

1981-12-01T23:59:59.000Z

314

Geothermal spas in Hawaii: A new tourist industry. : A preliminary report  

SciTech Connect

There are at least three very good uses for active volcanism: Obtain energy from it. Study it. Enjoy it. We are already obtaining electrical energy and industrial heat from Kilauea's abundant resource by drilling geothermal wells and building power plants. Our Volcano Observatory is recognized as a world renowned center of learning about volcanism. Our Volcanoes National Park allows us to view and appreciate this awesome phenomenon. For several years people have speculated about the high potential in Hawaii for another way of enjoying this warmth of mother earth -- spas or resorts that would make use of water that is naturally heated and mineralized by volcanic activity. However, before spas are developed in Hawaii, answers are needed to several important questions dealing with such topics as the suitability of our geothermal waters, sources of water that could be tapped, special equipment and materials needed, land availability, governmental and environmental hurdles, and the economics of this unique business. Though a considerable amount of research is still needed, it was felt worthwhile to summarize the information gathered to date from historical works, brochures, personal communications, and other sources. This report should stimulate interest in, and perhaps accelerate, the development of one of Hawaii's most important natural resources.

Woodruff, J.L.

1987-07-01T23:59:59.000Z

315

Solid earth geosciences research activities at LASL. Progress report, January 1--June 30, 1975  

DOE Green Energy (OSTI)

The geoscience group at the Los Alamos Scientific Laboratory (LASL) supports existing geoscience-related programs and conducts a basic research program related to energy and earth resources. Projects supporting the dry hot-rock geothermal energy program include study of drill cores, seismic activity associated with hydraulic fracturing at the drill site, and the thermal state of the Valles Caldera. Research in igneous processes includes the modeling of large-scale volcanic eruptions such as the one which deposited the Bandelier Tuff around the Jemez Mountains, the petrology of those tuffs, and the dimensions of the magma chamber below the Valles Caldera. Recent activity at Mt. Baker, WA, presented an opportunity to observe increasing fumarolic activity which may precede an eruption. The activity is continuously monitored by two sequence cameras. Samples of the tephra from around the vent have been studied, temperatures were measured, and ground observations were made of the new fumaroles. Every three months a flight is made over the volcano for aerial photography and infrared scanning. Field studies in the Southern Cascade Mountains were begun to determine the petrochemistry, mode of eruption, and volume of erupted materials for the last 0.5 million years. This study will be used to evaluate the present thermal state and composition of magmas below the range. Investigations ofactive volcanoes and their eruptions will provide data for geothermal research on the physical properties of the magma. (auth)

Heiken, G. (comp.)

1975-11-01T23:59:59.000Z

316

Geology of the Pavana geothermal area, Departamento de Choluteca, Honduras, Central America: Field report  

DOE Green Energy (OSTI)

The Pavana geothermal area is located in southern Honduras near the Gulf of Fonseca. This region is underlain by late Tertiary volcanic rocks. Within ranges near the geothermal manifestations, the rock sequences is characterized by intermediate to mafic laharic breccias and lavas overlain by silicic tuffs and lavas, which are in turn overlain by intermediate to mafic breccias, lavas, and tuffs. The nearest Quaternary volcanoes are about 40 km to the southwest, where the chain of active Central American volcanoes crosses the mouth of the Gulf of Fonseca. Structure of the Pavana area is dominated by generally northwest-trending, southwest-dipping normal faults. This structure is topographically expressed as northwest-trending escarpments that bound blocks of bedrock separated by asymmetric valleys that contain thin alluvial deposits. Thermal waters apparently issue from normal faults and are interpreted as having been heated during deep circulation along fault zones within a regional environment of elevated heat flow. Natural outflow from the main thermal area is about 3000 l/min of 60/sup 0/C water. Geothermometry of the thermal waters suggests a reservoir base temperature of about 150/sup 0/C.

Eppler, D.B.; Heiken, G.; Wohletz, K.; Flores, W.; Paredes, J.R.; Duffield, W.A.

1987-09-01T23:59:59.000Z

317

Trends in Selective Hydrogen Peroxide Production on Transition Metal Surfaces from First Principles  

Science Conference Proceedings (OSTI)

We present a comprehensive, Density Functional Theory-based analysis of the direct synthesis of hydrogen peroxide, H2O2, on twelve transition metal surfaces. We determine the full thermodynamics and selected kinetics of the reaction network on these metals, and we analyze these energetics with simple, microkinetically motivated rate theories to assess the activity and selectivity of hydrogen peroxide production on the surfaces of interest. By further exploiting Brnsted-Evans-Polanyi relationships and scaling relationships between the binding energies of different adsorbates, we express the results in the form of a two dimensional contour volcano plot, with the activity and selectivity being determined as functions of two independent descriptors, the atomic hydrogen and oxygen adsorption free energies. We identify both a region of maximum predicted catalytic activity, which is near Pt and Pd in descriptor space, and a region of selective hydrogen peroxide production, which includes Au. The optimal catalysts represent a compromise between activity and selectivity and are predicted to fall approximately between Au and Pd in descriptor space, providing a compact explanation for the experimentally known performance of Au-Pd alloys for hydrogen peroxide synthesis, and suggesting a target for future computational screening efforts to identify improved direct hydrogen peroxide synthesis catalysts. Related methods of combining activity and selectivity analysis into a single volcano plot may be applicable to, and useful for, other aqueous phase heterogeneous catalytic reactions where selectivity is a key catalytic criterion.

Rankin, Rees B.; Greeley, Jeffrey P.

2012-10-19T23:59:59.000Z

318

SIMULATION OF THE ICELAND VOLCANIC ERUPTION OF APRIL 2010 USING THE ENSEMBLE SYSTEM  

SciTech Connect

The Eyjafjallajokull volcanic eruption in Iceland in April 2010 disrupted transportation in Europe which ultimately affected travel plans for many on a global basis. The Volcanic Ash Advisory Centre (VAAC) is responsible for providing guidance to the aviation industry of the transport of volcanic ash clouds. There are nine such centers located globally, and the London branch (headed by the United Kingdom Meteorological Office, or UKMet) was responsible for modeling the Iceland volcano. The guidance provided by the VAAC created some controversy due to the burdensome travel restrictions and uncertainty involved in the prediction of ash transport. The Iceland volcanic eruption provides a useful exercise of the European ENSEMBLE program, coordinated by the Joint Research Centre (JRC) in Ispra, Italy. ENSEMBLE, a decision support system for emergency response, uses transport model results from a variety of countries in an effort to better understand the uncertainty involved with a given accident scenario. Model results in the form of airborne concentration and surface deposition are required from each member of the ensemble in a prescribed format that may then be uploaded to a website for manipulation. The Savannah River National Laboratory (SRNL) is the lone regular United States participant throughout the 10-year existence of ENSEMBLE. For the Iceland volcano, four separate source term estimates have been provided to ENSEMBLE participants. This paper focuses only on one of those source terms. The SRNL results in relation to other modeling agency results along with useful information obtained using an ensemble of transport results will be discussed.

Buckley, R.

2011-05-10T23:59:59.000Z

319

Heat flow studies in the Steamboat Mountain-Lemei Rock area, Skamania County, Washington. Information circular 62  

DOE Green Energy (OSTI)

In order to investigate the possible occurrence of geothermal energy in areas of Quaternary basaltic volcanism, the Washington State Department of Natural Resources drilled several 152 m deep heat-flow holes in the Steamboat Mountain-Lemei Rock area of Skamania County, Washington. The study area is located in the southern part of Washington's Cascade Mountains between 45/sup 0/54' and 46/sup 0/07' N. and 121/sup 0/40' and 121/sup 0/53'W. This area was selected for study because geologic mapping had identified a north-trending chain of late Quaternary basaltic volcanoes that had extruded a sequence of lava flows up to 600 m thick and because the chain of volcanoes is areally coincident with a well-defined gravity low with a minimum value of about -110 mgals. Gradients of 52.7 and 53.4/sup 0/C/km and heat flows of 1.8 and 1.6 ..mu..cal/cm/sup 2/sec, respectively, were measured in two drill holes near the east flank of the chain of volcanoes. Gradients of 44.5 and 58/sup 0/C/km and heat flows of 1.3 and 1.6 ..mu..cal/cm/sup 2/ sec, respectively, were measured in two holes near the axis of the chain, and one gradient of 49.8/sup 0/C/km and heat flow of 1.5 ..mu..cal/cm/sup 2/ sec were measured in a drill hole near the west flank of the chain. All gradients and heat flows are terrain corrected. These heat-flow values are typical regional heat-flow values for the Cascade Mountains. The data show that there is no large-sized heat source body within the general area of the heat-flow study. However, there is only one location in Washington, also in the Cascade Mountains, where higher gradients have been measured.

Schuster, J.E.; Blackwell, D.D.; Hammond, P.E.; Huntting, M.T.

1978-01-01T23:59:59.000Z

320

Teleseismic-Seismic Monitoring At Kilauea Southwest Rift And South Flank  

Open Energy Info (EERE)

Teleseismic-Seismic Monitoring At Kilauea Southwest Rift And South Flank Teleseismic-Seismic Monitoring At Kilauea Southwest Rift And South Flank Area (Wyss, Et Al., 2001) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Teleseismic-Seismic Monitoring At Kilauea Southwest Rift And South Flank Area (Wyss, Et Al., 2001) Exploration Activity Details Location Kilauea Southwest Rift And South Flank Area Exploration Technique Teleseismic-Seismic Monitoring Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes In spite of the complications discovered in this b-value analysis of Kilauea's South Flank, there are many similarities with the case histories of the other volcanoes we have studied, and the correlation of high b-value anomalies withmagma reservoirs is confirmed.

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Isotopic Analysis At Kilauea East Rift Area (Quane, Et Al., 2000) | Open  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Isotopic Analysis At Kilauea East Rift Area (Quane, Et Al., 2000) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic Analysis- Rock At Kilauea East Rift Area (Quane, Et Al., 2000) Exploration Activity Details Location Kilauea East Rift Area Exploration Technique Isotopic Analysis- Rock Activity Date Usefulness not indicated DOE-funding Unknown References S. L. Quane, M. O. Garcia, H. Guillou, T. P. Hulsebosch (2000) Magmatic History Of The East Rift Zone Of Kilauea Volcano, Hawaii Based On Drill Core From Soh 1 Retrieved from "http://en.openei.org/w/index.php?title=Isotopic_Analysis_At_Kilauea_East_Rift_Area_(Quane,_Et_Al.,_2000)&oldid=687735"

322

Solar energy integrated at Hawaiian military housing | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

energy integrated at Hawaiian military housing energy integrated at Hawaiian military housing Solar energy integrated at Hawaiian military housing December 9, 2009 - 11:27am Addthis What does this project do? Ohana Military Communities have applied for an additional award with the intention of installing photovoltaics on 2,317 military housing units on Oahu, as well as constructing a 3.6-megawatt solar photovoltaic farm to support 2,206 homes on the Big Island. If you ask most travelers, they would say Hawaii really is a very sunny chain of islands. Many Americans have enjoyed a relaxing day on the state's warm beaches or have been awe-inspired by its fascinating volcanoes. But that wealth of sunshine powers more than just the tourism economy - it's creating green jobs and clean, renewable solar energy.

323

LOS ALAMOS, N.M., Aug. 21, 2013-The High-Altitude Water Cherenkov (HAWC)  

NLE Websites -- All DOE Office Websites (Extended Search)

gamma-ray observatory begins gamma-ray observatory begins operations at Sierra Negra volcano in the state of Puebla, Mexico August 21, 2013 New site to observe supernovas and supermassive black holes LOS ALAMOS, N.M., Aug. 21, 2013-The High-Altitude Water Cherenkov (HAWC) Gamma Ray Observatory has begun formal operations at its site in Mexico. HAWC is designed to study the origin of very high-energy cosmic rays and observe the most energetic objects in the known universe. This extraordinary observatory, using a unique detection technique that differs from the classical astronomical design of mirrors, - 2 - lenses, and antennae, is a significant boost to international scientific and technical knowledge. "The HAWC observatory will search for signals from dark matter and to study some

324

Hydrothermal Circulation At Mount St Helens Determined By Self-Potential  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Hydrothermal Circulation At Mount St Helens Determined By Self-Potential Measurements Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Hydrothermal Circulation At Mount St Helens Determined By Self-Potential Measurements Details Activities (1) Areas (1) Regions (0) Abstract: The distribution of hydrothermal circulation within active volcanoes is of importance in identifying regions of hydrothermal alteration which may in turn control explosivity, slope stability and sector collapse. Self-potential measurements, indicative of fluid circulation, were made within the crater of Mount St. Helens in 2000 and

325

Fluid-inclusion evidence for past temperature fluctuations in the Kilauea  

Open Energy Info (EERE)

Fluid-inclusion evidence for past temperature fluctuations in the Kilauea Fluid-inclusion evidence for past temperature fluctuations in the Kilauea East Rift Zone geothermal area, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Fluid-inclusion evidence for past temperature fluctuations in the Kilauea East Rift Zone geothermal area, Hawaii Abstract Heating and freezing data were obtained for fluid inclusions in hydrothermal quartz, calcite, and anhydrite from several depths in three scientific observation holes drilled along the lower East Rift Zone of Kilauea volcano, Hawaii. Compositions of the inclusion fluids range from dilute meteoric water to highly modified sea water concentrated by boiling. Comparison of measured drill-hole temperatures with fluid-inclusion homogenization-temperature (Th) data indicates that only about 15% of the

326

Melt zones beneath five volcanic complexes in California: an assessment of  

Open Energy Info (EERE)

Melt zones beneath five volcanic complexes in California: an assessment of Melt zones beneath five volcanic complexes in California: an assessment of shallow magma occurrences Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Melt zones beneath five volcanic complexes in California: an assessment of shallow magma occurrences Details Activities (5) Areas (5) Regions (0) Abstract: Recent geological and geophysical data for five magma-hydrothermal systems were studied for the purpose of developing estimates for the depth, volume and location of magma beneath each area. The areas studied were: (1) Salton Trough, (2) The Geysers-Clear Lake, (3) Long Valley caldera, (4) Coso volcanic field, and (5) Medicine Lake volcano, all located in California and all selected on the basis of recent volcanic activity and published indications of crustal melt zones. 23 figs.

327

Geysers | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Geysers Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Geysers Dictionary.png Geysers: A type of hot spring that intermittently erupts a column of hot water and steam into the air. Other definitions:Wikipedia Reegle Modern Geothermal Features Typical list of modern geothermal features Hot Springs Fumaroles Warm or Steaming Ground Mudpots, Mud Pools, or Mud Volcanoes Geysers Blind Geothermal System Beehive Geyser in Yellowstone National Park(reference: http://www.flickr.com/photos/alanenglish/2824228526/) Geysers occur where geothermally heated waters develop pressure near surface conduits. When the pressure passes a certain threshold the water erupts at the surface, often in tall bursts. Half of the world's geysers

328

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Spectral Sun Photometer and Sky Spectral Sun Photometer and Sky Radiometer Measurements From Moving Platforms John N. Porter Hawaii Institute of Geophysics and Planetology Sun Photometer Measurements On Aircraft (250 m resolution) Aerosol Optical Depths Near Hawaii (Porter Algorithm) Use Commercial Aircraft And Insert Instrumented Doors Handheld Sun Photometer Measurements From Ships and Planes Basic Approach: Collect many measurements and reject more than 90% (Porter et al., 2001). This approach now used by NASA for ship based sun photometer measurements for ocean color satellite cal-val. Example Of Aircraft Handheld Sun Photometer Measurements United Arab Emirates Dust Experiment, 2004 Porter et al., 2007 Example: Handheld Sun Photometer Measurements In The Hawaii Volcano Plume Add Cheap WebCam To MicroTops Sun Photometer

329

The Geyser Bight Geothermal Area, Umnak Island, Alaska | Open Energy  

Open Energy Info (EERE)

Geyser Bight Geothermal Area, Umnak Island, Alaska Geyser Bight Geothermal Area, Umnak Island, Alaska Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: The Geyser Bight Geothermal Area, Umnak Island, Alaska Details Activities (2) Areas (1) Regions (0) Abstract: The Geyser Bight geothermal area contains one of the hottest and most extensive areas of thermal springs in Alaska, and is the only site in the state with geysers. Heat for the geothermal system is derived from crustal magma associated with Mt. Recheshnoi volcano. Successive injections of magma have probably heated the crust to near its minimum melting point and produced the only high-SiO2 rhyolites in the oceanic part of the Aleutian arc. At least two hydrothermal reservoirs are postulated to underlie the geothermal area and have temperatures of 165° and 200°C,

330

Science Summary  

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February 25, 2010 February 25, 2010 seafloor_biofilms Image of pillow basalts from inside the Pisces Submersible. » Links Scientific Highlight Templeton Lab EMSL News Imaging at SSRL » Share this Article Laboratree Ologeez SciLink LabSpaces Researchers Discover an Unexpected Source of Energy for Deep-sea Microbial Communities summary written by Raven Hanna New rock formed by deep undersea volcanoes does not stay bare long. Microbes quickly move onto these basalts to form communities in the form of biofilms. As these biofilms grow and develop, they change the geology of their environment, forming mineral deposits. Since many of these communities are deep in the cold ocean waters, where sunlight does not reach, they must use alternative sources of energy. What these might be is unknown, but a common theory posits that the microbes may be obtaining

331

Geothermal resource assessment in the Aleutian Islands and Alaska peninsula: Quarterly progress report, January 1--March 30, 1989  

DOE Green Energy (OSTI)

In this report the authors have now completed dating work on 20 rock samples. Analytical results for the dated samples are given in the enclosed table. The results are generally in good agreement with observed stratigraphic relationships and provide a well-constrained time framework for the eruptive history of this volcanic area. The argon extraction and potassium analyses are completed and the argon sample is awaiting mass spectrometry. In addition to documenting the eruptive history of Umnak volcanoes, the K-Ar ages will provide a time framework for the chemical evolution of the magmatic system, when combined with the rock chemistry analyses presently in progress at U.C., Santa Cruz. 1 tab.

Turner, D.L.; Nye, C.J.

1989-03-30T23:59:59.000Z

332

LANL Mobile News  

NLE Websites -- All DOE Office Websites (Extended Search)

Reliability Technology earns prestigious Los Alamos award Reliability Technology earns prestigious Los Alamos award LANL has honored Michael Hamada, Harry Martz and a team of researchers with its first Richard Feynman Prize for Innovation Achievement.08/27/13 New gamma-ray observatory begins operations at Sierra Negra volcano in the state of Puebla, Mexico The High-Altitude Water Cherenkov Gamma Ray Observatory has begun formal operations at its site in Mexico.08/21/13 Meltwater effects on flow of Greenland's ice sheet less severe for sea level rise than earlier feared, scientists say The team found that accelerating ice sheet movement from increasing meltwater lubrication is likely to have only a minor role in future sea-level rise.08/19/13 Little Boy weaponeer William "Deak" Parsons, wartime Los Alamos

333

Category:Reference Materials | Open Energy Information  

Open Energy Info (EERE)

Category Category Edit History Facebook icon Twitter icon » Category:Reference Materials (Redirected from Reference Materials) Jump to: navigation, search This is a deprecated subcategory. All Reference Materials will be converted to References. Pages in category "Reference Materials" The following 200 pages are in this category, out of 2,265 total. (previous 200) (next 200) 1 10 CFR § 1021 2 2-D Magnetotellurics At The Geothermal Site At Soultz-Sous-Forets- Resistivity Distribution To About 3000 M Depth 2.8-Ma Ash-Flow Caldera At Chegem River In The Northern Caucasus Mountains (Russia), Contemporaneous Granites, And Associated Ore Deposits 238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc 2D Joint Inversion Of Dc And Scalar Audio-Magnetotelluric Data In The Evaluation Of Low Enthalpy Geothermal Fields

334

Aeromagnetic Survey At Kilauea Summit Area (Zablocki, 1978) | Open Energy  

Open Energy Info (EERE)

Zablocki, 1978) Zablocki, 1978) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Aeromagnetic Survey At Kilauea Summit Area (Zablocki, 1978) Exploration Activity Details Location Kilauea Summit Area Exploration Technique Aeromagnetic Survey Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes These VLF induction methods should have wide application to studies of active volcanic regions in other parts of the world and could provide some insights into the workings of larger-scaled geothermal systems. Uses high-resolution aeromagnetics References Charles J. Zablocki (1978) Applications of the VLF Induction Method For Studying Some Volcanic Processes of Kilauea Volcano, Hawaii Retrieved from "http://en.openei.org/w/index.php?title=Aeromagnetic_Survey_At_Kilauea_Summit_Area_(Zablocki,_1978)&oldid=40223

335

Growth History Of Kilauea Inferred From Volatile Concentrations In  

Open Energy Info (EERE)

History Of Kilauea Inferred From Volatile Concentrations In History Of Kilauea Inferred From Volatile Concentrations In Submarine-Collected Basalts Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Growth History Of Kilauea Inferred From Volatile Concentrations In Submarine-Collected Basalts Details Activities (4) Areas (2) Regions (0) Abstract: Major-element and volatile (H2O, CO2, S) compositions of glasses from the submarine flanks of Kilauea Volcano record its growth from pre-shield into tholeiite shield-stage. Pillow lavas of mildly alkalic basalt at 2600-1900 mbsl on the upper slope of the south flank are an intermediate link between deeper alkalic volcaniclastics and the modern tholeiite shield. Lava clast glasses from the west flank of Papau Seamount are subaerial Mauna Loa-like tholeiite and mark the contact between the two

336

Seismicity And Fluid Geochemistry At Lassen Volcanic National Park,  

Open Energy Info (EERE)

Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, California- Evidence For Two Circulation Cells In The Hydrothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Seismicity And Fluid Geochemistry At Lassen Volcanic National Park, California- Evidence For Two Circulation Cells In The Hydrothermal System Details Activities (7) Areas (2) Regions (0) Abstract: Seismic analysis and geochemical interpretations provide evidence that two separate hydrothermal cells circulate within the greater Lassen hydrothermal system. One cell originates south to SW of Lassen Peak and within the Brokeoff Volcano depression where it forms a reservoir of hot fluid (235-270°C) that boils to feed steam to the high-temperature

337

Compound and Elemental Analysis At Long Valley Caldera Area (Evans, Et Al.,  

Open Energy Info (EERE)

Et Al., Et Al., 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Compound and Elemental Analysis At Long Valley Caldera Area (Evans, Et Al., 2002) Exploration Activity Details Location Long Valley Caldera Area Exploration Technique Compound and Elemental Analysis Activity Date Usefulness not indicated DOE-funding Unknown Notes Detailed chemical and isotopic studies not only help quantify the discharge, but also may provide additional insight to subsurface conditions. For example, CO2-rich groundwaters that are cold and dilute may be a general indicator that a volcano contains a pressurized gas cap. Shallow depths. References William C. Evans, Michael L. Sorey, Andrea C. Cook, B. Mack Kennedy, David L. Shuster, Elizabeth M. Colvard, Lloyd D. White, Mark A. Huebner

338

An Approach to Problems of a Geothermal Mercury Survey, Puna, Hawaii | Open  

Open Energy Info (EERE)

Approach to Problems of a Geothermal Mercury Survey, Puna, Hawaii Approach to Problems of a Geothermal Mercury Survey, Puna, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: An Approach to Problems of a Geothermal Mercury Survey, Puna, Hawaii Abstract Concentrations of soil mercury of 15 to 1250ppb were determined in the Puna geothermal areaon the lower east rift zone of Kilauea volcano. As the area is young and volcanically active a wide range of soils exist. Hg concentrations are partly controlled by such factors as soil development and organic content, which tend to complicate interpretation of the absolute concentrations measured. The pH of both ground gas and soil may also influence transport and fixation of the Hg, and some low pH soils may be due to SO2 and C02 in ground gas. By relating the Hg concentration of

339

Ground Magnetics At Kilauea East Rift Area (Leslie, Et Al., 2004) | Open  

Open Energy Info (EERE)

Ground Magnetics At Kilauea East Rift Area (Leslie, Et Al., 2004) Ground Magnetics At Kilauea East Rift Area (Leslie, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Magnetics At Kilauea East Rift Area (Leslie, Et Al., 2004) Exploration Activity Details Location Kilauea East Rift Area Exploration Technique Ground Magnetics Activity Date Usefulness useful DOE-funding Unknown Notes Paper states "magnetic data" - no further clarification regarding type of magnetic survey. References Stephen C. Leslie, Gregory F. Moore, Julia K. Morgan (2004) Internal Structure Of Puna Ridge- Evolution Of The Submarine East Rift Zone Of Kilauea Volcano, Hawaii Retrieved from "http://en.openei.org/w/index.php?title=Ground_Magnetics_At_Kilauea_East_Rift_Area_(Leslie,_Et_Al.,_2004)&oldid=390100"

340

Piggyback Tectonics- Long-Term Growth Of Kilauea On The South Flank Of  

Open Energy Info (EERE)

Piggyback Tectonics- Long-Term Growth Of Kilauea On The South Flank Of Piggyback Tectonics- Long-Term Growth Of Kilauea On The South Flank Of Mauna Loa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Piggyback Tectonics- Long-Term Growth Of Kilauea On The South Flank Of Mauna Loa Details Activities (0) Areas (0) Regions (0) Abstract: Compositional and age data from offshore pillow lavas and volcaniclastic sediments, along with on-land geologic, seismic, and deformation data, provide broad perspectives on the early growth of Kilauea Volcano and the long-term geometric evolution of its rift zones. Sulfur-rich glass rinds on pillow lavas and volcaniclastic sediments derived from them document early underwater growth of a large compositionally diverse alkalic edifice. The alkalic rocks yield 40Ar / 39Ar ages as old as about 275 ka; transitional-composition lavas, which

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341

Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters-  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters- Lessons Learned From Mammoth Mountain, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters- Lessons Learned From Mammoth Mountain, Usa Details Activities (3) Areas (1) Regions (0) Abstract: A major campaign to quantify the magmatic carbon discharge in cold groundwaters around Mammoth Mountain volcano in eastern California was carried out from 1996 to 1999. The total water flow from all sampled cold springs was >=1.8_107 m3/yr draining an area that receives an estimated

342

Static Temperature Survey At Kilauea Summit Area (Keller, Et Al., 1979) |  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Static Temperature Survey At Kilauea Summit Area (Keller, Et Al., 1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Static Temperature Survey At Kilauea Summit Area (Keller, Et Al., 1979) Exploration Activity Details Location Kilauea Summit Area Exploration Technique Static Temperature Survey Activity Date Usefulness useful DOE-funding Unknown References George V. Keller, L. Trowbridge Grose, John C. Murray, Catherine K. Skokan (1979) Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Hawaii Retrieved from "http://en.openei.org/w/index.php?title=Static_Temperature_Survey_At_Kilauea_Summit_Area_(Keller,_Et_Al.,_1979)&oldid=511148"

343

Water Sampling At Long Valley Caldera Area (Evans, Et Al., 2002) | Open  

Open Energy Info (EERE)

Water Sampling At Long Valley Caldera Area (Evans, Et Al., 2002) Water Sampling At Long Valley Caldera Area (Evans, Et Al., 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Water Sampling At Long Valley Caldera Area (Evans, Et Al., 2002) Exploration Activity Details Location Long Valley Caldera Area Exploration Technique Water Sampling Activity Date Usefulness useful DOE-funding Unknown Notes Detailed chemical and isotopic studies not only help quantify the discharge, but also may provide additional insight to subsurface conditions. For example, CO2-rich groundwaters that are cold and dilute may be a general indicator that a volcano contains a pressurized gas cap. Shallow depths. References William C. Evans, Michael L. Sorey, Andrea C. Cook, B. Mack Kennedy, David L. Shuster, Elizabeth M. Colvard, Lloyd D. White, Mark A. Huebner

344

Caldera Depression | Open Energy Information  

Open Energy Info (EERE)

Caldera Depression Caldera Depression Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Caldera Depression Dictionary.png Caldera Depression: Calderas form from the catastrophic eruption of large amounts of felsic lava and ash. Emptying of the magma chamber and subsequent collapse of the overlying volcanic edifice forms a ring-shaped caldera depression up to several kilometers in diameter. The edges of the underlying magma chamber are roughly marked by a ring fracture zone that acts as a conduit for ongoing volcanism and hydrothermal activity. Other definitions:Wikipedia Reegle Topographic Features List of topographic features commonly encountered in geothermal resource areas: Mountainous Horst and Graben Shield Volcano Flat Lava Dome Stratovolcano Cinder Cone Caldera Depression

345

CX-002955: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

955: Categorical Exclusion Determination 955: Categorical Exclusion Determination CX-002955: Categorical Exclusion Determination Hawaii Hydrogen Power Park - Technology Validation of a Hydrogen Fueling System CX(s) Applied: B5.1 Date: 07/12/2010 Location(s): Hawaii, Hawaii Office(s): Energy Efficiency and Renewable Energy, Golden Field Office The State of Hawaii is proposing to use the Department of Energy (DOE) and cost share funding to implement an experimental hydrogen-powered bus shuttle system and filling station for use in the Hawaii Volcano National Park system (HAVO) on the Big Island of Hawaii. The proposed Power Park Phase 2 (Project) would expand the capabilities of the existing hydrogen Power Park (the site) through the testing and validation of hydrogen fueling system technologies. The Project would include the design of the

346

Hot Springs | Open Energy Information  

Open Energy Info (EERE)

Springs Springs Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hot Springs Dictionary.png Hot Springs: A naturally occurring spring of hot water, heated by geothermal processes in the subsurface, and typically having a temperature greater than 37°C. Other definitions:Wikipedia Reegle Modern Geothermal Features Typical list of modern geothermal features Hot Springs Fumaroles Warm or Steaming Ground Mudpots, Mud Pools, or Mud Volcanoes Geysers Blind Geothermal System Mammoth Hot Springs at Yellowstone National Park (reference: http://www.hsd3.org/HighSchool/Teachers/MATTIXS/Mattix%20homepage/studentwork/Laura%20Cornelisse%27s%20Web%20Page/Yellowstone%20National%20Park.htm) Hot springs occur where geothermally heated waters naturally flow out of the surface of the Earth. Hot springs may deposit minerals and spectacular

347

Application Of High-Resolution Thermal Infrared Sensors For Geothermal  

Open Energy Info (EERE)

High-Resolution Thermal Infrared Sensors For Geothermal High-Resolution Thermal Infrared Sensors For Geothermal Exploration At The Salton Sea, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Application Of High-Resolution Thermal Infrared Sensors For Geothermal Exploration At The Salton Sea, California Details Activities (2) Areas (1) Regions (0) Abstract: The Salton Sea geothermal field straddles the southeast margin of the Salton Sea in California, USA. This field includes approximately 20km2 of mud volcanoes and mud pots and centered on the Mullet Island thermal anomaly. The area has been previously exploited for geothermal power; there are currently seven power plants in the area that produce 1000 MW. The field itself is relatively un-vegetated, which provides for unfettered

348

A History Of Geothermal Exploration In Washington | Open Energy Information  

Open Energy Info (EERE)

History Of Geothermal Exploration In Washington History Of Geothermal Exploration In Washington Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: A History Of Geothermal Exploration In Washington Details Activities (2) Areas (2) Regions (0) Abstract: The presence of Mt. St. Helens and other Quaternary andesitic volcanoes and other indicators, e.g., both thermal and both mineral springs, in the Washington Cascades suggests that this area has good potential for geothermal resources. Exploration for geothermal resources has been conducted in the region since the early 1970s, with surge of interest and exploration activity in 1974 when the Federal Government developed a leasing program for its land. This surge was followed by a gradual decline in activity through the early 1980s. During the mid 1980s,

349

Lake Nyos and Mammoth Mountain: What Do They Tell Us about the Security of Engineered Storage of CO2 Underground?  

NLE Websites -- All DOE Office Websites (Extended Search)

Lake Nyos aNd MaMMoth MouNtaiN: Lake Nyos aNd MaMMoth MouNtaiN: What do they teLL us about the security of eNgiNeered storage of co 2 uNdergrouNd? Introduction Lake Nyos in the Northwest Province of Cameroon in western Africa and Mammoth Mountain in California are the sites of two well-known underground releases of carbon dioxide (CO 2 ) in nature, both with adverse effects. Both Lake Nyos and Mammoth Mountain are atop current or former volcanoes and the released CO 2 is volcanic in origin (sometimes referred to as magmatic origin). Molten rock (magma) far below the Earth's surface contains entrained amounts of water, CO 2 , and other gases. If the magma rises toward the Earth's surface, the pressure it is under is reduced and the entrained gases begin to expand. The expansion of the

350

Hawaii Hydrogen Power Park - DOE Hydrogen and Fuel Cells Program FY 2012 Annual Progress Report  

NLE Websites -- All DOE Office Websites (Extended Search)

0 0 DOE Hydrogen and Fuel Cells Program FY 2012 Annual Progress Report Richard (Rick) E. Rocheleau (Primary Contact), Mitch Ewan Hawaii Natural Energy Institute School of Ocean and Earth Science and Technology University of Hawaii at Manoa 1680 East-West Road, POST 109 Honolulu, HI 96822 Phone: (808) 956-8346 Email: rochelea@hawaii.edu DOE Managers HQ: Jason Marcinkoski Phone: (202) 586-7466 Email: Jason.Marcinkoski@ee.doe.gov GO: Reginald Tyler Phone: (720) 356-1805; Email: Reginald.Tyler@go.doe.gov Contract Number: DE-FC51-02R021399 A008 Project Start Date: June 29, 2009 Project End Date: December 31, 2014 Fiscal Year (FY) 2012 Objectives Island of Hawaii (Big Island) Install hydrogen fueling station infrastructure at Hawaii * Volcanoes (HAVO) National Park on the Big Island of

351

Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation-  

Open Energy Info (EERE)

Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation- Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation- Results From The Alum 25-29 Well, Nevada Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Selecting The Optimal Logging Suite For Geothermal Reservoir Evaluation- Results From The Alum 25-29 Well, Nevada Details Activities (6) Areas (1) Regions (0) Abstract: This paper presents the results of analysis of a state of the art set of wireline petrophysical and wellbore image logs recorded in the Alum 25-29 well, southwestern Nevada. The Alum well penetrated nearly 2000 ft (610 m) of volcano-clastic rocks and more than 1000 ft of basement, separated from the sediments by a shallowly dipping detachment fault. The logs were acquired both to characterize the site and also to select the

352

Clean Air 2005 8th International Conference on Energy for a Clean Environment  

NLE Websites -- All DOE Office Websites (Extended Search)

Testing of Mercury Control Technology Testing of Mercury Control Technology for Coal-Fired Power Plants: A U.S. Department of Energy R&D Program Clean Air 2005 8 th International Conference on Energy for a Clean Environment June 27-30, 2005 Lisbon, Portugal Thomas J. Feeley, III thomas.feeley@netl.doe.gov U.S. Department of Energy National Energy Technology Laboratory CleanAir 2005_Lisbon June 29, 2005 Presentation Outline * Background on Hg Emissions * U.S. DOE's Hg Control Technology R&D Program - Activated Carbon (Sorbent Injection) - Oxidation Technologies * Key Take Aways CleanAir 2005_Lisbon June 29, 2005 Global Mercury Emissions FACT: It is estimated that U.S. coal-fired power plants emit approximately 1% of annual global mercury emissions Emissions from Natural Sources (Volcanoes, Forest Fires, etc.)

353

An Integrated Geophysical Study Of The Northern Kenya Rift | Open Energy  

Open Energy Info (EERE)

Kenya Rift Kenya Rift Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Integrated Geophysical Study Of The Northern Kenya Rift Details Activities (0) Areas (0) Regions (0) Abstract: The Kenyan part of the East African rift is among the most studied rift zones in the world. It is characterized by: (1) a classic rift valley, (2) sheer escarpments along the faulted borders of the rift valley, (3) voluminous volcanics that flowed from faults and fissures along the rift, and (4) axial and flank volcanoes where magma flow was most intense. In northern Kenya, the rift faults formed in an area where the lithosphere was weakened and stretched by Cretaceous-Paleogene extension, and in central and southern Kenya, it formed along old zones of weakness at the

354

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

21 - 7130 of 28,905 results. 21 - 7130 of 28,905 results. Download EIS-0293: Amended Record of Decision Conveyance and Transfer of Certain Land Tracts Administered by the Department of Energy and Located at Los Alamos National Laboratory, Los Alamos and Santa Fe Counties, New Mexico http://energy.gov/nepa/downloads/eis-0293-amended-record-decision-0 Download EA-1897: Final Environmental Assessment AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon http://energy.gov/nepa/downloads/ea-1897-final-environmental-assessment Download Response to several FOIA requests- Renewable Energy. http://energy.gov/management/downloads/response-several-foia-requests-renewable-energy-6 Download FY 2005 Budget Justification FY 2005 budget justification and supporting documents to reflect the

355

Microbial Life on the Seafloor: Where's the Energy?  

NLE Websites -- All DOE Office Websites (Extended Search)

Microbial Life on the Seafloor: Where's the Microbial Life on the Seafloor: Where's the Energy? image 1 Pillow basalts on the side of the volcano. image 2 Pillow basalts from from inside the Pisces V. During the past 10 years there has been a growing recognition that the vast expanse of bare, unsedimented rocks on the seafloor harbor abundant and diverse microbial communities. Surprisingly, biofilms rapidly develop as volcanic rocks are produced at the mid-ocean ridges and Seamounts, and these types of microbial biomes are relatively unexplored. Geochemists, oceanographers and microbiologist have all questioned the role of the microbial organisms in the breakdown and weathering of the ocean crust. In particular, the energy sources and metabolisms supporting this rock-hosted microbial biosphere are currently unknown. Since the majority of the cold,

356

High Co2 Emissions Through Porous Media- Transport Mechanisms And  

Open Energy Info (EERE)

Co2 Emissions Through Porous Media- Transport Mechanisms And Co2 Emissions Through Porous Media- Transport Mechanisms And Implications For Flux Measurement And Fractionation Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: High Co2 Emissions Through Porous Media- Transport Mechanisms And Implications For Flux Measurement And Fractionation Details Activities (1) Areas (1) Regions (0) Abstract: Diffuse emissions of CO2 are known to be large around some volcanoes and hydrothermal areas. Accumulation-chamber measurements of CO2 flux are increasingly used to estimate the total magmatic or metamorphic CO2 released from such areas. To assess the performance of accumulation chamber systems at fluxes one to three orders of magnitude higher than normally encountered in soil respiration studies, a test system was

357

Why Is Pt So Unique A Chemical Physics Approach  

NLE Websites -- All DOE Office Websites (Extended Search)

Is Pt So Unique Is Pt So Unique A Chemical Physics Approach Philip N. Ross, Jr. Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley, CA 94708 Outline * A brief history of electrode kinetics * Reaction pathway for oxygen reduction * Effect of pH * Systematic trends across Periodic Table * One electron makes a big difference d 9 s 1 versus d 10 s 1 * Pt at the top of the Volcano Curve Mechanism of the ORR at metal electrodes Addition of first electron needed to break O-O bond Rate limiting step in electrochemical reduction of O 2 is 1 st electron transfer O 2 + - → (O 2 - ) sol Outer Sphere E 0 ' =-0.3 V) O 2 + - → (O 2 - ) ads Inner Sphere (E 0 ' + ∆G ad /F) O 2 - adsorption strength nic properties of the electrode material Establish general trends across Periodic Table using

358

Ground radon survey of a geothermal area in Hawaii | Open Energy  

Open Energy Info (EERE)

radon survey of a geothermal area in Hawaii radon survey of a geothermal area in Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Ground radon survey of a geothermal area in Hawaii Abstract Rates of ground radon emanation, inthe Puna geothermal area on the lower east riftof Kilauea volcano, were measured by alpha particle sensitive cellulose nitrate films. The survey successfully defined an area of thermal significance associated with the rift structure,and suggests that a thermally driven ground gas convection system exists within, and peripheralto, the rift. This type of survey was found suitable for the basaltic island environment characteristic of Hawaii and is now used in Hawaii as a routine geothermal exploration technique. Author Malcolm E. Cox Published Journal

359

NETL: Carbon Dioxide 101 FAQs  

NLE Websites -- All DOE Office Websites (Extended Search)

is carbon dioxide? is carbon dioxide? CO2 Dipole Carbon Dioxide Carbon dioxide (chemical name CO2) is a clear gas composed of one atom of carbon (C) and two atoms of oxygen (O). Carbon dioxide is one of many chemical forms of carbon on the Earth. It does not burn, and in standard temperature and pressure conditions it is stable, inert, and non-toxic. Carbon dioxide occurs naturally in small amounts (about 0.04%) in the Earth's atmosphere. The volume of CO2 in the atmosphere is equivalent to one individual in a crowd of 2,500. Carbon dioxide is produced naturally by processes deep within the Earth. This CO2 can be released at the surface by volcanoes or might be trapped in natural underground geologic CO2 deposits, similar to underground deposits of oil and natural gas. As a major greenhouse gas, CO2 helps create and

360

Direct-Current Resistivity Survey At Kilauea Summit Area (Keller, Et Al.,  

Open Energy Info (EERE)

1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current Resistivity Survey At Kilauea Summit Area (Keller, Et Al., 1979) Exploration Activity Details Location Kilauea Summit Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness useful DOE-funding Unknown Notes An electromagnetic sounding survey by Jackson and Keller (1972) defined a strong resistivity anomaly above the center of inflation associated with volcanic activity during the early 1960's. References George V. Keller, L. Trowbridge Grose, John C. Murray, Catherine K. Skokan (1979) Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Hawaii Retrieved from "http://en.openei.org/w/index.php?title=Direct-Current_Resistivity_Survey_At_Kilauea_Summit_Area_(Keller,_Et_Al.,_1979)&oldid=510532

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Definition: Active Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Seismic Techniques Seismic Techniques Jump to: navigation, search Dictionary.png Active Seismic Techniques Active seismic techniques study the behavior of artificially-generated elastic waves in the subsurface. A seismic wave or pulse is generated at the surface by an active seismic source which can be a vibration, mechanical impact, or near-surface explosion.[1] View on Wikipedia Wikipedia Definition Seismic waves are waves of energy that travel through the Earth's layers, and are a result of an earthquake, explosion, or a volcano that imparts low-frequency acoustic energy. Many other natural and anthropogenic sources create low amplitude waves commonly referred to as ambient vibrations. Seismic waves are studied by geophysicists called seismologists. Seismic wave fields are recorded by a seismometer,

362

Connections: November 2013  

NLE Websites -- All DOE Office Websites (Extended Search)

Community Connections: Our link to Northern New Mexico Communities Latest Issue:Dec. 2013 - Jan. 2014 All Issues » submit IN THIS ISSUE Ribbon cutting marks chemistry laboratory upgrades at Northern New Mexico College Los Alamos National Security, LLC provides support Lab transitions employee giving campaigns This year's theme: "I Give Because..." Lab provides environmental support for county construction projects A face-lift for Ashley Pond New gamma-ray observatory begins operations at Sierra Negra volcano in the state of Puebla, Mexico The High-Altitude Water Cherenkov Gamma-Ray Observatory has begun formal operations 20/20 Campaign announces winners Companies recognized for fostering regional growth Lab supports multiethnic science careers Pilot program prepares regional students for national conference

363

Category:Reference Materials | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Reference Materials Jump to: navigation, search This is a deprecated subcategory. All Reference Materials will be converted to References. Pages in category "Reference Materials" The following 200 pages are in this category, out of 2,265 total. (previous 200) (next 200) 1 10 CFR § 1021 2 2-D Magnetotellurics At The Geothermal Site At Soultz-Sous-Forets- Resistivity Distribution To About 3000 M Depth 2.8-Ma Ash-Flow Caldera At Chegem River In The Northern Caucasus Mountains (Russia), Contemporaneous Granites, And Associated Ore Deposits 238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc

364

Geodetic Survey At Medicine Lake Area (Poland, Et Al., 2006) | Open Energy  

Open Energy Info (EERE)

Geodetic Survey At Medicine Lake Area (Poland, Et Al., 2006) Geodetic Survey At Medicine Lake Area (Poland, Et Al., 2006) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geodetic Survey At Medicine Lake Area (Poland, Et Al., 2006) Exploration Activity Details Location Medicine Lake Area Exploration Technique Geodetic Survey Activity Date Usefulness useful DOE-funding Unknown References Michael Poland, Roland Burgmann, Daniel Dzurisin, Michael Lisowski, Timothy Masterlark, Susan Owen, Jonathan Fink (2006) Constraints On The Mechanism Of Long-Term, Steady Subsidence At Medicine Lake Volcano, Northern California, From Gps, Leveling, And Insar Retrieved from "http://en.openei.org/w/index.php?title=Geodetic_Survey_At_Medicine_Lake_Area_(Poland,_Et_Al.,_2006)&oldid=386441"

365

Accommodations  

NLE Websites -- All DOE Office Websites (Extended Search)

Accommodations Accommodations Accommodations Los Alamos National Laboratory is situated on a mesatop on the eastern side of the Jemez Mountains, an impressive series of ancient volcanoes with extensive views of the Sangre de Cristo Mountains in the east, where sunsets turn the western slopes a vibrant red. We hope you enjoy your stay in the Land of Enchantment. Update: The La Fonda is now full. Reservations can be made at the overflow hotel, La Posada, which is a short walk from the conference hotel: Contact reservations at 1-855-278-5276 OR Book via the web at be.genares.net/10054 Use group code is GSFAF to obtain the group rate of only $83 per night Rooms must be booked by April 30. La Fonda The Sequencing, Finishing and Analysis in the Future meeting is sponsored and hosted by DOE's Los Alamos National Laboratory. No registration fee is

366

CX-005875: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5875: Categorical Exclusion Determination 5875: Categorical Exclusion Determination CX-005875: Categorical Exclusion Determination Hawaii Hydrogen Power Park - Technology Validation of a Hydrogen Fueling System CX(s) Applied: B5.1 Date: 05/18/2011 Location(s): Honolulu, Hawaii Office(s): Energy Efficiency and Renewable Energy, Golden Field Office This National Environmental Policy Act (NEPA) determination is being completed to document a change in location for the proposed Hawaii Hydrogen Power Park as outlined in NEPA review GFD-10-324. The recipient is proposing to relocate the project from the Hawaii Volcanoes National Park (as previously reviewed) to the United States Marine Corps Base Hawaii, Honolulu, Oahu. This fueling station will be used to fuel GM Equinox fuel cell vehicles. DOCUMENT(S) AVAILABLE FOR DOWNLOAD

367

A Prehistoric Lahar-Dammed Lake And Eruption Of Mount Pinatubo Described In  

Open Energy Info (EERE)

Prehistoric Lahar-Dammed Lake And Eruption Of Mount Pinatubo Described In Prehistoric Lahar-Dammed Lake And Eruption Of Mount Pinatubo Described In A Philippine Aborigine Legend Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Prehistoric Lahar-Dammed Lake And Eruption Of Mount Pinatubo Described In A Philippine Aborigine Legend Details Activities (0) Areas (0) Regions (0) Abstract: The prehistoric eruptions of Mount Pinatubo have followed a cycle: centuries of repose terminated by a caldera-forming eruption with large pyroclastic flows; a post-eruption aftermath of rain-triggered lahars in surrounding drainages and dome-building that fills the caldera; and then another long quiescent period. During and after the eruptions lahars descending along volcano channels may block tributaries from watersheds

368

Thermal techniques for characterizing magma body geometries | Open Energy  

Open Energy Info (EERE)

techniques for characterizing magma body geometries techniques for characterizing magma body geometries Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Thermal techniques for characterizing magma body geometries Details Activities (1) Areas (1) Regions (0) Abstract: The surface heat flux distribution resulting from emplaced magma bodies can be used to help characterize the magma source. Closed-form analytical solutions for the conduction heat transfer from various idealized magma geometries (dikes, sills, and spheres) are obtained using either the Schwarz-Christoffel transformation theorem (dikes and sills) or the 'method of images' with superposition (spheres). Comparison of these analytically determined heat flux distributions with field data from active geothermal areas at Yellowstone, Avachinsky volcano, Kilauea Iki,

369

Experiments in cold fusion  

DOE Green Energy (OSTI)

The work of Steve Jones and others in muon-catalyzed cold fusion of deuterium and hydrogen suggests the possibility of such fusion catalyzed by ions, or combinations of atoms, or more-or-less free electrons in solid and liquid materials. A hint that this might occur naturally comes from the heat generated in volcanic action in subduction zones on the earth. It is questionable whether the potential energy of material raised to the height of a midocean ridge and falling to the depth of an ocean trench can produce the geothermal effects seen in the volcanoes of subduction zones. If the ridge, the trench, the plates, and the asthenosphere are merely visible effects of deeper density-gradient driven circulations, it is still uncertain that observed energy-concentration effects fit the models.

Palmer, E.P.

1986-03-28T23:59:59.000Z

370

A summary of modeling studies of the Nesjavellir geothermal field, Iceland  

DOE Green Energy (OSTI)

The Nesjavellir geothermal field in Iceland is being developed to provide the capital city of Reykjavik and surrounding areas with hot water for space heating. In the last few years, many wells have been drilled at the site and various geothermal studies have been conducted. The main upflow to the system is underneath the nearby Hengill volcano, and the natural recharge rate and enthalpy are estimated to be 65 kg/s and 1850 kJ/kg, respectively. An extensive vapor zone is believed to be present in the upflow region. Permeabilities and porosities of the system range between 1 and 50 md and 1 and 10 percent, respectively. In this paper, the characteristics of the Nesjavellir field are described and a three-dimensional numerical model of the resource in discussed. 15 refs., 11 figs., 1 tab.

Bodvarsson, G.S.; Bjornsson, S.; Gunnarsson, A.; Gunnlaugsson, E.; Sigurdsson,, O. Stefansson, V.; Steingrimsson, B.

1988-01-01T23:59:59.000Z

371

Geothermal energy development in Washington State. A guide to the federal, state and local regulatory process  

DOE Green Energy (OSTI)

Washington State's geothermal potential is wide spread. Hot springs and five strato volcanoes existing throughout the Cascade Range, limited hot spring activity on the Olympic Peninsula, and broad reaching, low temperature geothermal resources found in the Columbia Basin comprise the extent of Washington's known geothermal resources. Determination of resource ownership is the first step in proceeding with geothermal exploration and development activities. The federal and state processes are examined from pre-lease activity through leasing and post-lease development concerns. Plans, permits, licenses, and other requirements are addressed for the federal, state, and local level. Lease, permit, and other forms for a number of geothermal exploration and development activities are included. A map of public lands and another displaying the measured geothermal resources throughout the state are provided.

Bloomquist, R.G.; Simpson, S.J.

1986-03-01T23:59:59.000Z

372

Indications of mineral zoning in a fossil hydrothermal system at the Meager Creek geothermal prospect, British Columbia, Canada, from induced polarization studies  

SciTech Connect

By measuring the induced-polarization parameters m (chargeability) and tau (time-constant) we have found evidence that the center of a presumed fossil hydrothermal system at Meager Creek, British Columbia, lies south of the main manifestation of the present-day convective hydrothermal system. What implication this finding has for development of the present-day system is unknown. However, some of the fractures formed during the development of the fossil hydrothermal system may serve as conduits for fluids of the present-day system. The analysis is limited by the lack of availability of a good subsurface distribution of core samples. Nevertheless, a surface induced-polarization survey is expected to yield information about the geometry of the fossil system. Such knowledge would have implications not only for Meager Creek but for other hydrothermal systems of Cascades volcano type. 16 refs., 15 figs., 1 tab.

Ward, S.H.; Zhao, J.X.; Groenwald, J.; Moore, J.N.

1985-05-01T23:59:59.000Z

373

Interpretation of long-offset transient electromagnetic data fromMount Merapi, Indonesia, using a three-dimensional optimizationapproach  

SciTech Connect

In the years 1998, 2000, and 2001, long-offset transientelectromagnetic (LOTEM) surveys were carried out at the active volcanoMerapi in Central Java. The measurements investigated the conductivitystructure of the volcanic edifice. Our area of interest, which is belowthe summit and the upper flanks, was investigated using horizontal andvertical magnetic field time derivative data from seventransmitter-receiver setups. Because of topography and athree-dimensional (3-D) underground structure, a 3-D interpretation isused. The method optimizes few parameters of a 3-D model by a stableleast squares joint inversion of the data, providing sufficientresolution capability. Reasonable data fits are achieved with anonhorizontally layered model featuring a very conductive basement belowdepths of 1.5 km. While hydrothermal alteration is also considered, wetentatively explain the high conductivities by aqueous solutions withrelatively high salt contents. A large magma body or a small superficialreservoir below Merapi's central volcanic complex, as discussed by otherauthors, cannot be resolved by the LOTEM data.

Commer, Michael; Helwig, Stefan L.; Hordt, Andreas; Tezkan, Bulent

2004-06-02T23:59:59.000Z

374

Cascades geothermal program  

SciTech Connect

The Cascades region is an area with high geothermal potential but few surface manifestations and limited subsurface data. To stimulate further development of hydrothermal resources, DOE-Idaho Operations Office issued Solicitation Number DE-SC07-85IDI2580. The reason for this solicitation was to secure cost sharing agreements with industry to drill gradient holes that would penetrate the rain curtain and obtain deep thermal, lithologic, and structural data. The data obtained and studies conducted under this program are to be released to the public for the benefit of the geothermal industry and the scientific community. The first thermal gradient hole to be drilled under this program was finished November 1985 by GEO-Newberry Crater, Inc. on the south flank of Newberry volcano. Data for additional wells drilled under the Cascades Geothermal Drilling Program will be released as they become available.

Not Available

1986-01-01T23:59:59.000Z

375

Surveys of distribution and abundance of the Hawaiian hawk within the vicinity of proposed geothermal project subzones in the District of Puna, Hawaii. Final report  

DOE Green Energy (OSTI)

In 1993, the US Fish and Wildlife Service (USFWS) entered an interagency agreement with the Department of Energy (DOE) to conduct specific biological surveys to identify potential impacts of proposed geothermal development on the biota of the east rift zone of Kilauea volcano in the Puna district on the island of Hawaii. This report presents data on the distribution, habitat use, and density of the Hawaiian hawk or `Io (Buteo solitarius). Data were collected by the USFWS to assess the potential impacts of geothermal development on `Io populations on the island of Hawaii. These impacts include degradation of potential nesting habitat and increased disturbance due to construction and operation activities. Data from these surveys were analyzed as part of an island wide population assessment conducted by the Western Foundation of Vertebrate Zoology at the request of the USFWS.

Reynolds, M.; Ritchotte, G.; Viggiano, A.; Dwyer, J.; Nielsen, B.; Jacobi, J.D. [Fish and Wildlife Service, Hawaii National Park, HI (United States). Hawaii Research Station

1994-08-01T23:59:59.000Z

376

FY 1984 and FY 1985 geochemistry and materials studies in support of the Magma Energy Extraction Program  

DOE Green Energy (OSTI)

Geochemistry and materials studies are being performed in support of the Magma Energy Extraction Program. The work is largely restricted to: (1) characterizing magmatic environments at sites of interest, (2) testing engineering materials in laboratory simulated magmatic environments, (3) investigating chemical mass transport effects inherent in designs for direct contact heat exchangers, and (4) evaluating degassing hazards associated with drilling into and extracting energy from shallow magma. Magma characterization studies have been completed for shallow magma at Long Valley, Coso volcanic field, and Kilauea volcano. The behavior of 17 commercially available materials has been examined in rhyolite magma at 850/sup 0/C and 200 MPa for periods up to seven days. Analysis of reaction products from materials tests to date indicate that oxidation is the main corrosion problem for most alloys in rhyolitic magma. Considerations of corrosion resistance, high-temperature strength, and cost indicate nickel-base superalloys offer the most promise as candidates for use in rhyolitic magma.

Westrich, H.R.; Weirick, L.J.; Cygan, R.T.; Reece, M.; Hlava, P.F.; Stockman, H.W.; Gerlach, T.M.

1986-04-01T23:59:59.000Z

377

Resource appraisal of the Mt. Shasta Wilderness Study area, Siskiyou County, California  

DOE Green Energy (OSTI)

Results of geological, geochemical, and aeromagnetic surveys indicate that the only potentially extractable resource of Mt. Shasta may be geothermal energy, but the potential within the Wilderness Study Area is low. Some sulfur and gypsum occur locally around active and extinct fumaroles near the summit but are too small to indicate a resource. Cinder deposits have been mined near the Wilderness Study Area, but almost none are exposed within it. The levels of trace-metal anomalies relative to background values and the amounts of exposed mineralized rock are too small to indicate economic potential. It is concluded that any significant potential for future geothermal development is more likely to exist on and near the lower slopes of the volcano, generally outside the study area. (JGB)

Christiansen, R.L.; Kleinhampl, F.J.; Blakely, R.J.; Tuchek, E.T.; Johnson, F.L.; Conyac, M.D.

1977-01-01T23:59:59.000Z

378

The Geyser Bight geothermal area, Umnak Island, Alaska  

DOE Green Energy (OSTI)

The Geyser Bight geothermal area contains one of the hottest and most extensive areas of thermal springs in Alaska, and is the only site in the state with geysers. Heat for the geothermal system is derived from crustal magma associated with Mt. Recheshnoi volcano. Successive injections of magma have probably heated the crust to near its minimum melting point and produced the only high-SiO[sub 2] rhyolites in the oceanic part of the Aleutian arc. At least two hydrothermal reservoirs are postulated to underlie the geothermal area and have temperatures of 165 and 200 C, respectively, as estimated by geothermometry. Sulfate-water isotope geothermometers suggest a deeper reservoir with a temperature of 265 C. The thermal spring waters have relatively low concentrations of Cl (600 ppm) but are rich in B (60 ppm) and As (6 ppm). The As/Cl ratio is among the highest reported for geothermal waters. 41 refs., 12 figs., 8 tabs.

Motyka, R.J. (Alaska Div. of Geological and Geophysical Surveys, Juneau, AK (United States)); Nye, C.J. (Alaska Div. of Geological and Geophysical Surveys, Fairbanks, AK (United States) Univ. of Alaska, Fairbanks, AK (United States). Geophysical Inst.); Turner, D.L. (Univ. of Alaska, Fairbanks, AK (United States). Geophysical Inst.); Liss, S.A. (Alaska Div. of Geological and Geophysical Surveys, Fairbanks, AK (United States))

1993-08-01T23:59:59.000Z

379

Surveys on the distribution and abundance of the Hawaiian hoary bat (Lasiurus cinereus semotus) in the vicinity of proposed geothermal project subzones in the District of Puna, Hawaii. Final report  

DOE Green Energy (OSTI)

In 1993 the US Fish and Wildlife Service (USFWS) entered into an interagency agreement with the Department of Energy (DOE) to conduct wildlife surveys relative to identifying potential impacts of geothermal resource development on the native biota of the east rift zone of Kilauea volcano in the Puna district on the island of Hawaii. This report presents data on the endangered Hawaiian hoary bat (Hawaiian bat), or opeapea (Lasiurus cinereus semotus), within the proposed Hawaii geothermal subzones. Potential effects of geothermal development on Hawaiian bat populations are also discussed. Surveys were conducted to determine the distribution and abundance of bats throughout the District of Puna. Baseline information was collected to evaluate the status of bats within the study area and to identify important foraging habitats. Little specific data exists in the published literature on the population status and potential limiting factors affecting the Hawaiian bat. A USFWS recovery plan does not exist for this endangered species.

Reynolds, M.; Ritchotte, G.; Dwyer, J.; Viggiano, A.; Nielsen, B.; Jacobi, J.D. [Fish and Wildlife Service, Hawaii National Park, HI (United States). Hawaii Research Station

1994-08-01T23:59:59.000Z

380

Acoustic waves in the atmosphere and ground generated by volcanic activity  

SciTech Connect

This paper reports an interesting sequence of harmonic tremor observed in the 2011 eruption of Shinmoe-dake volcano, southern Japan. The main eruptive activity started with ashcloud forming explosive eruptions, followed by lava effusion. Harmonic tremor was transmitted into the ground and observed as seismic waves at the last stage of the effusive eruption. The tremor observed at this stage had unclear and fluctuating harmonic modes. In the atmosphere, on the other hand, many impulsive acoustic waves indicating small surface explosions were observed. When the effusion stopped and the erupted lava began explosive degassing, harmonic tremor started to be transmitted also to the atmosphere and observed as acoustic waves. Then the harmonic modes became clearer and more stable. This sequence of harmonic tremor is interpreted as a process in which volcanic degassing generates an open connection between the volcanic conduit and the atmosphere. In order to test this hypothesis, a laboratory experiment was performed and the essential features were successfully reproduced.

Ichihara, Mie; Lyons, John; Oikawa, Jun; Takeo, Minoru [Earthquake Research Institute, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032 (Japan); Instituto Geofisico, Escuela Politecnica Nacional, Ladron de Guevara E11-253, Aptdo 2759, Quito (Ecuador); Earthquake Research Institute, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032 (Japan)

2012-09-04T23:59:59.000Z

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Unalaska geothermal exploration project. Electrical power generation analysis. Final report  

DOE Green Energy (OSTI)

The objective of this study was to determine the most cost-effective power cycle for utilizing the Makushin Volcano geothermal resource to generate electricity for the towns of Unalaska and Dutch Harbor. It is anticipated that the geothermal power plant would be intertied with a planned conventional power plant consisting of four 2.5 MW diesel-generators whose commercial operation is due to begin in 1987. Upon its completion in late 1988, the geothermal power plant would primarily fulfill base-load electrical power demand while the diesel-generators would provide peak-load electrical power and emergency power at times when the geothermal power plant would be partially or completely unavailable. This study compares the technical, environmental, and economic adequacy of five state-of-the-art geothermal power conversion processes. Options considered are single- and double-flash steam cycles, binary cycle, hybrid cycle, and total flow cycle.

Not Available

1984-04-01T23:59:59.000Z

382

A Study of the Correlation Between Electrical Resistivity and Matric Suction for Unsaturated Ash-Fall Pyroclastic Soils in the Campania Region (Southern Italy)  

E-Print Network (OSTI)

In the territory of the Campania region (southern Italy), critical rainfall events periodically trigger dangerous fast slope movements involving ashy and pyroclastic soils originated by the explosive phases of the Mt. Somma-Vesuvius volcano and deposited along the surrounding mountain ranges. In this paper, an integration of engineering-geological and geophysical measurements is presented to characterize unsaturated pyroclastic samples collected in a test area on the Sarno Mountains (Salerno and Avellino provinces, Campania region). The laboratory analyses were aimed at defining both soil water retention and electrical resistivity curves versus water content. From the matching of the experimental data, a direct relationship between electrical resistivity and matric suction is retrieved for the investigated soil horizons typical of a ash-fall pyroclastic succession. The obtained relation turns out to be helpful in characterizing soils up to close saturation, which is a critical condition for the trigger of slo...

De Vita, Pantaleone; Piegari, Ester

2011-01-01T23:59:59.000Z

383

A Large Self-Potential Anomaly And Its Changes On The Quiet Mt Fuji, Japan  

Open Energy Info (EERE)

Self-Potential Anomaly And Its Changes On The Quiet Mt Fuji, Japan Self-Potential Anomaly And Its Changes On The Quiet Mt Fuji, Japan Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Large Self-Potential Anomaly And Its Changes On The Quiet Mt Fuji, Japan Details Activities (0) Areas (0) Regions (0) Abstract: Self-potential (SP) surveys were carried out on Mt. Fuji volcano, Japan, and an intense positive anomaly (about 2000 mV) was found in the summit area. The positive SP anomaly was stable on 2001 and 2002, but increased 150 mV in amplitude on September 12, 2003, and suddenly decreased 300 mV two weeks later. This amplitude change coincides with the emergence of the fumaroles, which appeared for the first time in 40 years, on the east-northeast flank 6 km apart from the summit. The SP anomaly is thought

384

Warm or Steaming Ground | Open Energy Information  

Open Energy Info (EERE)

Warm or Steaming Ground Warm or Steaming Ground Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Warm or Steaming Ground Dictionary.png Warm or Steaming Ground: An area where geothermal heat is conducted to the earth's surface, warming the ground and sometimes causing steam to form when water is present. Other definitions:Wikipedia Reegle Modern Geothermal Features Typical list of modern geothermal features Hot Springs Fumaroles Warm or Steaming Ground Mudpots, Mud Pools, or Mud Volcanoes Geysers Blind Geothermal System Steam rising from the ground at Eldvorp, a 10 km row of craters, in Southwestern Iceland. http://www.visiticeland.com/SearchResults/Attraction/eldvorp Warm or steaming ground is often an indicator of a geothermal system beneath the surface. In some cases a geothermal system may not show any

385

Science Energy Literacy and Activities  

NLE Websites -- All DOE Office Websites (Extended Search)

Science Energy Literacy and Activities Elementary School Curriculum Created by National Renewable Energy Laboratory (NREL) Click on the links below to take you to the Chapter heading: Circuit Electromagnetism Electrolysis Potato Power Fermentation Volcanoes Kites Wind Tower Solar Cars Solar Ovens and Beads Tie Dye Vanishing Resources Standards Circuits Objective: We will learn about electricity by making a simple circuit with your own bodies! Science Background Electricity is a versatile form of energy. Windmills, water wheels and coal power plants, all have generators, which convert energy from the wind, water, or coal into electricity. The electricity can then be used to make light bulbs glow and electric heaters warm. It can make the sound in speakers and the

386

Direct-Current Resistivity At Kilauea Summit Area (Keller, Et Al., 1979) |  

Open Energy Info (EERE)

Summit Area (Keller, Et Al., 1979) Summit Area (Keller, Et Al., 1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current Resistivity At Kilauea Summit Area (Keller, Et Al., 1979) Exploration Activity Details Location Kilauea Summit Area Exploration Technique Direct-Current Resistivity Survey Activity Date Usefulness useful DOE-funding Unknown Notes An electromagnetic sounding survey by Jackson and Keller (1972) defined a strong resistivity anomaly above the center of inflation associated with volcanic activity during the early 1960's. References George V. Keller, L. Trowbridge Grose, John C. Murray, Catherine K. Skokan (1979) Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Hawaii Retrieved from "http://en.openei.org/w/index.php?title=Direct-Current_Resistivity_At_Kilauea_Summit_Area_(Keller,_Et_Al.,_1979)&oldid=594370"

387

Horst and Graben | Open Energy Information  

Open Energy Info (EERE)

Horst and Graben Horst and Graben Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Horst and Graben Dictionary.png Horst and Graben: Topographic features found in a normal fault zone forming ridges and valleys. A graben represents a block of land that has dropped down relative to the landscape and a horst represents a block of land remaining higher than the general landscape. Other definitions:Wikipedia Reegle Topographic Features List of topographic features commonly encountered in geothermal resource areas: Mountainous Horst and Graben Shield Volcano Flat Lava Dome Stratovolcano Cinder Cone Caldera Depression Resurgent Dome Complex A "horst and graben" is a crustal-extension structure, composed of a series of normal faults, typical of the Basin & Range region of the US and

388

Property:Author | Open Energy Information  

Open Energy Info (EERE)

Property Property Edit with form History Facebook icon Twitter icon » Property:Author Jump to: navigation, search Property Name Author Property Type String Description The author of a document, resource, reference material or tool. Pages using the property "Author" Showing 25 pages using this property. (previous 25) (next 25) 2 2-D Magnetotellurics At The Geothermal Site At Soultz-Sous-Forets- Resistivity Distribution To About 3000 M Depth + Johannes Geiermann +, Eva Schill + 2.8-Ma Ash-Flow Caldera At Chegem River In The Northern Caucasus Mountains (Russia), Contemporaneous Granites, And Associated Ore Deposits + Peter W. Lipman +, O. A. Bogatikov +, A. A. Tsvetkov +, ... 2007 Annual Report + Enel + 238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc + K. H. Rubin +, G. E. Wheller +, M. O. Tanzer +, ...

389

Mountainous | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Mountainous Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Mountainous Dictionary.png Mountainous: A geothermal areal located in terrain characterized by rugged and steep topography with high relief Other definitions:Wikipedia Reegle Topographic Features List of topographic features commonly encountered in geothermal resource areas: Mountainous Horst and Graben Shield Volcano Flat Lava Dome Stratovolcano Cinder Cone Caldera Depression Resurgent Dome Complex The interior of Iceland holds a vast expanse of mountainous geothermal areas, one of the more famous areas is landmannalaugar, Iceland. Photo by

390

Petrography Analysis At Kilauea Summit Area (Keller, Et Al., 1979) | Open  

Open Energy Info (EERE)

Kilauea Summit Area (Keller, Et Al., 1979) Kilauea Summit Area (Keller, Et Al., 1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Petrography Analysis At Kilauea Summit Area (Keller, Et Al., 1979) Exploration Activity Details Location Kilauea Summit Area Exploration Technique Petrography Analysis Activity Date Usefulness not indicated DOE-funding Unknown Notes Thin sections from most of the cored intervals were studied and some vesicle-fill minerals were determined by X-ray. Major mineralogic and petrographic features from surface to total depth are given in Fig. 4. References George V. Keller, L. Trowbridge Grose, John C. Murray, Catherine K. Skokan (1979) Results Of An Experimental Drill Hole At The Summit Of Kilauea Volcano, Hawaii Retrieved from "http://en.openei.org/w/index.php?title=Petrography_Analysis_At_Kilauea_Summit_Area_(Keller,_Et_Al.,_1979)&oldid=511039

391

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

71 - 1280 of 31,917 results. 71 - 1280 of 31,917 results. Page Fluidized Bed Technology- An R&D Success Story In the early 1990s, POWER magazine called the development of fluidized bed coal combustors "the commercial success story of the last decade in the power generation business." The success, perhaps... http://energy.gov/fe/fluidized-bed-technology-rd-success-story Download EA-1897: Final Environmental Assessment AltaRock's Newberry Volcano EGS Demonstration near Bend, Oregon http://energy.gov/nepa/downloads/ea-1897-final-environmental-assessment Download Solar Background Document 5 Graph illustrating Chinese Development Bank financing to Chinese solar companies. http://energy.gov/downloads/solar-background-document-5 Download Solar Background Document 6 Graph illustrating solar cell production in the United States and China

392

Blind Geothermal System | Open Energy Information  

Open Energy Info (EERE)

Blind Geothermal System Blind Geothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Blind Geothermal System Dictionary.png Blind Geothermal System: An area with a geothermal heat source, but no modern surface manifestations. Other definitions:Wikipedia Reegle Modern Geothermal Features Typical list of modern geothermal features Hot Springs Fumaroles Warm or Steaming Ground Mudpots, Mud Pools, or Mud Volcanoes Geysers Blind Geothermal System Many geothermal areas show no signs of geothermal activity at the surface if the heated water is too far below or no conduits to the surface are available. An area of geothermal activity with no surface features is referred to as a "blind geothermal system." Examples Want to add an example to this list? Select a Geothermal Resource Area to

393

Hawaii/Geothermal | Open Energy Information  

Open Energy Info (EERE)

Hawaii/Geothermal Hawaii/Geothermal < Hawaii Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hawaii Geothermal General Regulatory Roadmap Geothermal Power Projects Under Development in Hawaii Developer Location Estimated Capacity (MW) Development Phase Geothermal Area Geothermal Region Haleakala SW Rift Zone Exploration Ormat Technologies Inc , US Department of Energy Haleakala Southwest Rift Zone Haleakala Volcano Geothermal Area Hawaii Geothermal Region Puna Geothermal Venture Ormat Technologies Inc Pahoa, Hawaii 38 MW38,000 kW 38,000,000 W 38,000,000,000 mW 0.038 GW 3.8e-5 TW Kilauea East Rift Geothermal Area Hawaii Geothermal Region Add a geothermal project. Operational Geothermal Power Plants in Hawaii Owner Facility Type Capacity (MW) Commercial Online

394

L.m, Libby and W.F. Libby  

NLE Websites -- All DOE Office Websites (Extended Search)

A72--^^ir ^ A72--^^ir ^ ; ^ | ) ' yULCANISm ftND RADIOCARBON DATES L.m, Libby and W.F. Libby ttolytprsity n f C a l i f o r n i a _ Los Angeles, C a l i f o r n i a , U.S.A. ABSTRACT Ule consider whether the long term perturbation of radiocarbon dates, which is known to be approximately a sin function of period about 8000 years and amplitude of about B% peak-to-peak, could have been caused in any major part by vulcanism. We conclude that this is not the case. On the contrary, present day volcanoes are a far less important source of inert CO. (about 100 fold less) than is man's burning of fossil fuels which has caused the Suess dilution of about 2%, >.73 VULCANISM AND RADIOCARBON DATES L. M. Libby and W. F. Libby University of California Los Angeles, California, USA I. Introduction

395

A Resurgent Cauldron In The Early Paleozoic Of Wales, Uk | Open Energy  

Open Energy Info (EERE)

Resurgent Cauldron In The Early Paleozoic Of Wales, Uk Resurgent Cauldron In The Early Paleozoic Of Wales, Uk Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Resurgent Cauldron In The Early Paleozoic Of Wales, Uk Details Activities (0) Areas (0) Regions (0) Abstract: The paper presents a controversial interpretation of a mid-Ordovician volcano-sedimentary complex. It deals with the cyclic interdependence of intrusive, volcanic, and sedimentary processes, due to the development of a nearshore resurgent cauldron in the Caledonian fold belt of North Wales. Deformed volcanotectonic features include a resurgent dome and apical graben, surrounded by a moat and peripheral crescentic ring-fault, constituting a caldera 20 km in diameter. The resurgent Snowdon caldera developed through three cycles of ash-flow volcanism resulting from

396

Overview Of The Lake City, California Geothermal System | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Overview Of The Lake City, California Geothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Overview Of The Lake City, California Geothermal System Details Activities (1) Areas (1) Regions (0) Abstract: Following a spectacular mud volcano eruption in 1951, the Lake City geothermal system has been intermittently explored for 44 years. A discovery well was drilled 30 years ago. The geothermal system is associated with a two mile-long, north-south trending, abnormally complex section of the active Surprise Valley fault zone that has uplifted the

397

Mass Wasting in the Western Galapagos Islands  

E-Print Network (OSTI)

Oceanic island volcanoes such as those in the Hawaiian, Canary and Galapagos Islands are known to become unstable, causing failures of the subaerial and submarine slopes of the volcanic edifices. These mass wasting events appear to be the primary source of destruction and loss of volume of many oceanic islands, but our knowledge of mass wasting is still rudimentary in many seamount and island chains. To better understand mass wasting in the western Galapagos Islands, multi-beam bathymetry and backscatter sidescan sonar images were used to examine topography and acoustic backscatter signatures that are characteristic of mass wasting. Observations show that mass wasting plays an important role in the development of Galapagos volcanoes. While volcanic activity continues to conceal the submarine terrain, the data show that four forms of mass wasting are identified including debris flows, slumps sheets, chaotic slumps, and detached blocks. A total of 23 mass wasting features were found to exist in the western Galapagos Islands, including fourteen debris flows with one that incorporated a set of detached blocks, seven slump sheets, and one chaotic slump. Some of the indentified features have obvious origination zones while the sources of others are not clearly identifiable. Approximately 73 percent of the surveyed coastlines are affected by slumping on the steep upper slopes and ~64 percent are affected by debris flows on the lower slopes. Unlike the giant landslides documented by GLORIA imagery around the Hawaiian Islands, the western Galapagos Islands appear to be characterized by small slump sheets existing along the steep shallow submarine flanks of the island and by debris flows that are flanked by rift zones and extend off the platform. This study indicates that submarine mass wasting is widespread in the western Galapagos, suggesting that the production of small-scale downslope movement is part of the erosive nature of these oceanic volcanic islands.

Hall, Hillary

2011-08-01T23:59:59.000Z

398

Mantle helium and carbon isotopes in Separation Creek Geothermal Springs, Three Sisters area, Central Oregon: Evidence for renewed volcanic activity or a long term steady state system?  

DOE Green Energy (OSTI)

Cold bubbling springs in the Separation Creek area, the locus of current uplift at South Sister volcano show strong mantle signatures in helium and carbon isotopes and CO{sub 2}/{sup 3}He. This suggests the presence of fresh basaltic magma in the volcanic plumbing system. Currently there is no evidence to link this system directly to the uplift, which started in 1998. To the contrary, all geochemical evidence suggests that there is a long-lived geothermal system in the Separation Creek area, which has not significantly changed since the early 1990s. There was no archived helium and carbon data, so a definite conclusion regarding the strong mantle signature observed in these tracers cannot yet be drawn. There is a distinct discrepancy between the yearly magma supply required to explain the current uplift (0.006 km{sup 3}/yr) and that required to explain the discharge of CO{sub 2} from the system (0.0005 km{sup 3}/yr). This discrepancy may imply that the chemical signal associated with the increase in magma supply has not reached the surface yet. With respect to this the small changes observed at upper Mesa Creek require further attention, due to the recent volcanic vent in that area it may be the location were the chemical signal related to the uplift can most quickly reach the surface. Occurrence of such strong mantle signals in cold/diffuse geothermal systems suggests that these systems should not be ignored during volcano monitoring or geothermal evaluation studies. Although the surface-expression of these springs in terms of heat is minimal, the chemistry carries important information concerning the size and nature of the underlying high-temperature system and any changes taking place in it.

van Soest, M.C.; Kennedy, B.M.; Evans, W.C.; Mariner, R.H.

2002-04-30T23:59:59.000Z

399

Are there significant hydrothermal resources in the US part of the Cascade Range?  

SciTech Connect

The Cascade Range is a geothermal dichotomy. On the one hand, it is an active volcanic arc above a subducting plate and is demonstrably an area of high heat flow. On the other hand, the distribution of hydrothermal manifestations compared to other volcanic arcs is sparse, and the hydrothermal outflow calculated from stream chemistry is low. Several large estimates of undiscovered geothermal resources in the U.S. part of the Cascade Range prepared in the 1970s and early 1980s were based fundamentally on two models of the upper crust. One model assumed that large, partly molten, intrusive bodies exist in the upper 10 km beneath major volcanic centers and serve as the thermal engines driving overlying hydrothermal systems. The other model interpreted the coincident heat-flow and gravity gradients west of the Cascade crest in central Oregon to indicate a partly molten heat source at 10 {+-} 2 km depth extending {approx}30 km west from the axis of the range. Investigations of the past ten years have called both models into question. Large long-lived high-temperature hydrothermal systems at depths <3 km in the U.S. part of the Cascade Range appear to be restricted to silicic domefields at the Lassen volcanic center, Medicine Lake volcano, Newberry volcano, and possibly the Three Sisters. Federal land-use restrictions further reduce this list to Medicine Lake and Newberry. Dominantly andesitic stratocones appear to support only small transitory hydrothermal systems related to small intrusive bodies along the volcanic conduits. The only young caldera, at Crater Lake, supports only low- to intermediate-temperature hydrothermal systems. Most of the Cascade Range comprises basaltic andesites and has little likelihood for high-level silicic intrusions and virtually no potential for resultant large high-temperature hydrothermal systems. Undiscovered hydrothermal resources of the Cascade Range of the United States are substantially lower than previous estimates. The range does have potential for intermediate-temperature hot dry rock and localized low- to intermediate-temperature hydrothermal systems.

Muffler, L.J. Patrick; Guffanti, Marianne

1995-01-26T23:59:59.000Z

400

Subduction Controls of Hf and Nd Isotopes in Lavas of the Aleutian Island Arc  

SciTech Connect

The Hf and Nd isotopic compositions of 71 Quaternary lavas collected from locations along the full length of the Aleutian island arc are used to constrain the sources of Aleutian magmas and to provide insight into the geochemical behavior of Nd and Hf and related elements in the Aleutian subduction-magmatic system. Isotopic compositions of Aleutian lavas fall approximately at the center of, and form a trend parallel to, the terrestrial Hf-Nd isotopic array with {var_epsilon}{sub Hf} of +12.0 to +15.5 and {var_epsilon}{sub Nd} of +6.5 to +10.5. Basalts, andesites, and dacites within volcanic centers or in nearby volcanoes generally all have similar isotopic compositions, indicating that there is little measurable effect of crustal or other lithospheric assimilation within the volcanic plumbing systems of Aleutian volcanoes. Hafnium isotopic compositions have a clear pattern of along-arc increase that is continuous from the eastern-most locations near Cold Bay to Piip Seamount in the western-most part of the arc. This pattern is interpreted to reflect a westward decrease in the subducted sediment component present in Aleutian lavas, reflecting progressively lower rates of subduction westward as well as decreasing availability of trench sediment. Binary bulk mixing models (sediment + peridotite) demonstrate that 1-2% of the Hf in Aleutian lavas is derived from subducted sediment, indicating that Hf is mobilized out of the subducted sediment with an efficiency that is similar to that of Sr, Pb and Nd. Low published solubility for Hf and Nd in aqueous subduction fluids lead us to conclude that these elements are mobilized out of the subducted component and transferred to the mantle wedge as bulk sediment or as a silicate melt. Neodymium isotopes also generally increase from east to west, but the pattern is absent in the eastern third of the arc, where the sediment flux is high and increases from east to west, due to the presence of abundant terrigenous sediment in the trench east of the Amlia Fracture Zone, which is being subducting beneath the arc at Seguam Island. Mixing trends between mantle wedge and sediment end members become flatter in Hf-Nd isotope space at locations further west along the arc, indicating that the sediment end member in the west has either higher Nd/Hf or is more radiogenic in Hf compared to Nd. This pattern is interpreted to reflect an increase in pelagic clay relative to the terrigenous subducted sedimentary component westward along the arc. Results of this study imply that Hf does not behave as a conservative element in the Aleutian subduction system, as has been proposed for some other arcs.

Yogodzinski, Gene; Vervoort, Jeffery; Brown, Shaun Tyler; Gerseny, Megan

2010-08-29T23:59:59.000Z

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401

Volatile contents in subduction-related basaltic magmas from Central Mexico: considerations on mantle enrichment processes and low pressure magma degassing during basaltic eruptions  

E-Print Network (OSTI)

Melt inclusions in olivine phenocrysts from primitive lavas from five different volcanoes in the Sierra Chichinautzin (Central Mexico) were analyzed by infrared spectroscopy and electron microprobe to determine their major element chemistry and their H?O and CO? concentrations. The compositions of the inclusions range from basalt to andesite and include both alkaline and calc-alkaline varieties. Most inclusions have low H?O concentrations (average values 0.4[]0.2 wt.% H?O for Xitle, 0.6[]0.5 wt.% for Tuxtepec, 0.6[]0.3 wt.% for Ixcatepec, 0.8[]0.5 wt.% for Las Tetillas, 1.0[]0.3 wt.% for Jumiltepec) and no measurable CO?. The lack of CO?, which has strongly pressure-dependent solubility in silicate melts, and the low and variable H?O contents indicate that low pressure degassing is a widespread phenomenon during basaltic cinder cone eruptions. One model is presented to explain the extensive low pressure degassing in a well studied volcano (Xitle). The model explains the formation of an initial tephra cone and its temporal growth by explosive events followed by a switch in eruptive style to effusive. The model is based on the fact that cinder cones are highly porous, which allows efficient degassing of reticulating, low viscosity basaltic magma. The presence of alkaline and calc-alkaline primitive lavas throughout the volcanic field indicates heterogeneities in source region compositions. Rare melt inclusions in the primitive lavas contain measurable CO? and were trapped at relatively high pressures (~1 to 3 kb). These inclusions constrain the primary H?O contents of the magmas before low pressure degassing. The results clearly show that the calc-alkaline magmas contain higher H?O (~2 to 4 wt%) than the alkaline (~1 wt.%). Calculations of a hypothetical mantle source and comparison with EMORB and NMORB mantle sources shows that these volcanics were formed by two different processes: (1) partial melting caused by fluxing of the mantle wedge with a water-rich component from the subjected slab (calc-alkaline magmas) and (2) partial melting of the mantle wedge by upwelling-induced decompression (alkaline magmas). These two processes can be considered as end-members in arc magma genesis.

Cervantes, Pablo

1999-01-01T23:59:59.000Z

402

Property:Link | Open Energy Information  

Open Energy Info (EERE)

Link Link Jump to: navigation, search This is a property of type URL. Pages using the property "Link" Showing 25 pages using this property. (previous 25) (next 25) 1 10 CFR § 1021 + http://en.openei.org/wiki/File:10CFRPart1021.pdf + 2 2-D Magnetotellurics At The Geothermal Site At Soultz-Sous-Forets- Resistivity Distribution To About 3000 M Depth + http://www.sciencedirect.com/science/article/pii/S1631071310001070 + 2.8-Ma Ash-Flow Caldera At Chegem River In The Northern Caucasus Mountains (Russia), Contemporaneous Granites, And Associated Ore Deposits + http://www.sciencedirect.com/science/article/B6VCS-48B5BV5-KK/2/a841cce0d247b754e5163bb62f72dc05 + 2007 Annual Report + https://www.enel.com/en-GB/investors/financial_reports/annual/ + 238U Decay Series Systematics Of Young Lavas From Batur Volcano, Sunda Arc + http://www.sciencedirect.com/science/article/B6VCS-48B0DW7-F/2/8e2bc55d34022c3d13f71c2dd57cd45b +

403

Characteristics of microearthquakes accompanying hydraulic fracturing as determined from studies of spectra of seismic waveforms  

DOE Green Energy (OSTI)

A study of the spectral properties of the waveforms recorded during hydraulic fracturing earthquakes has been carried out to obtain information about the physical dimensions of the earthquakes. We find two types of events. The first type has waveforms with clear P and S arrivals and spectra that are very similar to earthquakes occurring in tectonic regions. These events are interpreted as being due to shear slip along fault planes. The second type of event has waveforms that are similar in many ways to long period earthquakes observed at volcanoes and is called long period. Many waveforms of these events are identical, which implies that these events represent repeated activation of a given source. We propose that the source of these long period events is the sudden opening of a channel that connects two cracks filled with fluid at different pressures. The sizes of the two cracks differ, which causes two or more peaks to appear in the spectra, each peak being associated with one physical dimension of the crack. From the frequencies at which spectral peaks occur, we estimate crack dimensions of between 3 and 22m. 13 refs., 8 figs.

Fehler, M.; Bame, D.

1985-03-01T23:59:59.000Z

404

Integrating chemistry into 3D climate models: Detailed kinetics in the troposphere and stratosphere of a global climate model  

SciTech Connect

This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). The motivation for the project is to create the first complete, three-dimensional climate model that enfolds atmospheric photochemistry. The LANL chemical global climate model (GCM) not only distributes the trace greenhouse gases and modifies their concentrations within the detailed photochemical web, but also permits them to influence the radiation field and so force their own transport. Both atmospheric chemistry and fluid dynamics are nonlinear and zonally asymmetric phenomena. They can only be adequately modeled in three dimensions on the global grid. The kinetics-augmented GCM is the only program within the atmospheric community capable of investigating interaction involving chemistry and transport. The authors have conducted case studies of timely three-dimensional chemistry issues. Examples include ozone production from biomass burning plumes, kinetic feedbacks in zonally asymmetric transport phenomena with month- to year-long time scales, and volcano sulfate aerosols with respect to their potential effects on tropospheric ozone depletion.

Kao, C.Y.J.; Elliott, S. [Los Alamos National Lab., NM (United States). Earth and Environmental Sciences Div.; Turco, R.P.; Zhao, X. [Univ. of California, Los Angeles, CA (United States)

1997-11-01T23:59:59.000Z

405

LANL | Solid Earth Geophysics | EES-17  

NLE Websites -- All DOE Office Websites (Extended Search)

LANL : Earth & Environmental Sciences : Solid Earth Geophysics (EES-17) LANL : Earth & Environmental Sciences : Solid Earth Geophysics (EES-17) Home Publications Collaboration & Links Staff Research Highlights Ground-Based Nuclear Explosion Monitoring Geodynamics & National Security Nonlinear Elasticity Time Reversal Los Alamos Seismic Network Stimulated Porous Fluid Flow Resource Recovery Seismic & Acoustic Imaging Exploration Geophysics Induced Seismicity Volcanoes & Earthquakes Other Research CONTACTS Group Leader Ken Rehfeldt Administrative Contacts Jody Benson Cecilia Gonzales Geophysics (EES-17) The Geophysics Group supports the national security mission of Los Alamos National Laboratory by providing technical expertise to monitor movement of Earth's crust while predicting the effects of these events on the environment. Though our focus is on seismic monitoring, we also apply electric, magnetic, radionuclide, and acoustic technologies to monitor underground explosions, maintain our ability to conduct tests, and develop the Yucca Mountain Project. In addition, we study the nonlinear properties of earth materials, imaging with seismic waves, how seismic waves affect the interaction of porous rocks and fluids, use of seismic waves to characterize underground oil reservoirs, volcanology and volcanic seismicity, advanced computational physics of earth materials, and using drilling technology to study the crust of the earth. These tasks are complemented by our extensive background in both conventional and hot dry rock geothermal energy development and geophysical support of the Nevada Test Site.

406

A PACIFIC-WIDE GEOTHERMAL RESEARCH LABORATORY: THE PUNA GEOTHERMAL RESEARCH FACILITY  

SciTech Connect

The Hawaii Geothermal Project (HGP-A) well, located in the Kilauea volcano east rift zone, was drilled to a depth of 6450 feet in 1976. It is considered to be one of the hot-test producing geothermal wells in the world. This single well provides 52,800 pounds per hour of 371 F and 160 pounds per square inch-absolute (psia) steam to a 3-megawatt power plant, while the separated brine is discharged in percolating ponds. About 50,000 pounds per hour of 368 F and 155 psia brine is discharged. Geothermal energy development has increased steadily in Hawaii since the completion of HGP-A in 1976: (1) a 3 megawatt power plant at HGP-A was completed and has been operating since 1981; (2) Hawaiian Electric Company (HECO) has requested that their next increment in power production be from geothermal steam; (3) three development consortia are actively, or in the process of, drilling geothermal exploration wells on the Big Island; and (4) engineering work on the development of a 400 megawatt undersea cable for energy transmission is continuing, with exploratory discussions being initiated on other alternatives such as hydrogen. The purpose for establishing the Puna Geothermal Research Facility (PGRF) is multifold. PGRF provides a facility in Puna for high technology research, development, and demonstration in geothermal and related activities; initiate an industrial park development; and examine multi-purpose dehydration and biomass applications related to geothermal energy utilization.

Takahashi, P.; Seki, A.; Chen, B.

1985-01-22T23:59:59.000Z

407

Investigation of the electrocatalysis for oxygen reduction reaction by Pt and binary Pt alloys: an XRD, XAS and electrochemical study  

DOE Green Energy (OSTI)

Electrocatalysis for the oxygen reduction reaction (ORR) on five binary Pt alloy electrocatalysts (PtCr/C, PtMn/C, PtFe/C, PtCo/C and PtNi/C) supported on carbon have been investigated. The electrochemical characteristics for ORR in a proton conducting fuel cell environment has been correlated with the electronic and structural parameters determined under in situ conditions using XANES and EXAFS technique respectively. Results indicate that all the alloys possess higher Pt 5d band vacancies as compared to Pt/C. There is also evidence of lattice contraction in the alloys (supported by XRD results). Further, the Pt/C shows increase in Pt 5 d band vacancies during potential transitions from 0.54 to 0.84 V vs. RHE, which has been ration@ on the basis of OH type adsorption. In contrast to this, the alloys do not exhibit such an enhancement. Detailed EXAFS analysis supports the presence of OH species on Pt/C and its relative absence in the alloys. Correlation of the electrochemical results with bond distances and d-band vacancies show a volcano type behavior with the PtCr/C on top of the curve.

Mukerjee, S.; McBreen, J. [Brookhaven National Lab., Upton, NY (United States); Srinivasan, S. [Texas A and M Univ., College Station, TX (United States). Texas Engineering Experiment Station

1995-12-31T23:59:59.000Z

408

Lithospheric Velocity Structure of the Anatolain plateau-Caucasus-Caspian Regions  

SciTech Connect

Anatolian Plateau-Caucasus-Caspian region is an area of complex structure accompanied by large variations in seismic wave velocities. Despite the complexity of the region little is known about the detailed lithospheric structure. Using data from 29 new broadband seismic stations in the region, a unified velocity structure is developed using teleseismic receiver functions and surface waves. Love and Rayleigh surface waves dispersion curves have been derived from event-based analysis and ambient-noise correlation. We jointly inverted the receiver functions with the surface wave dispersion curves to determine absolute shear wave velocity and important discontinuities such as sedimentary layer, Moho, lithospheric-asthenospheric boundary. We combined these new station results with Eastern Turkey Seismic Experiment results (29 stations). Caspian Sea and Kura basin underlained by one of the thickest sediments in the world. Therefore, short-period surface waves are observed to be very slow. The strong crustal multiples in receiver functions and the slow velocities in upper crust indicate the presence of thick sedimentary unit (up to 20 km). Crustal thickness varies from 34 to 52 km in the region. The thickest crust is in Lesser Caucasus and the thinnest is in the Arabian Plate. The lithospheric mantle in the Greater Caucasus and the Kura depression is faster than the Anatolian Plateau and Lesser Caucasus. This possibly indicates the presence of cold lithosphere. The lower crust is slowest in the northeastern part of the Anatolian Plateau where Holocene volcanoes are located.

Gok, R; Mellors, R J; Sandvol, E; Pasyanos, M; Hauk, T; Yetirmishli, G; Teoman, U; Turkelli, N; Godoladze, T; Javakishvirli, Z

2009-04-15T23:59:59.000Z

409

Mechanism of instantaneous coal outbursts  

Science Conference Proceedings (OSTI)

Thousands of mine workers die every year from mining accidents, and instantaneous coal outbursts in underground coal mines are one of the major killers. Various models for these outbursts have been proposed, but the precise mechanism is still unknown. We hypothesize that the mechanism of coal outbursts is similar to magma fragmentation during explosive volcanic eruptions; i.e., it is caused by high gas pressure inside coal but low ambient pressure on it, breaking coal into pieces and releasing the high-pressure gas in a shock wave. Hence, coal outbursts may be regarded as another type of gas-driven eruption, in addition to explosive volcanic, lake, and possible ocean eruptions. We verify the hypothesis by experiments using a shock-tube apparatus. Knowing the mechanism of coal outbursts is the first step in developing prediction and mitigation measures. The new concept of gas-driven solid eruption is also important to a better understanding of salt-gas outbursts, rock-gas outbursts, and mud volcano eruptions.

Guan, P.; Wang, H.Y.; Zhang, Y.X. [Peking University, Beijing (China). School of Earth & Space Science

2009-10-15T23:59:59.000Z

410

Preliminary geothermal evaluation of the Mokapu Peninsula on the Island of Oahu, Hawaii  

DOE Green Energy (OSTI)

Preliminary geological, geochemical, and geophysical field surveys have been conducted on Mokapu Peninsula on the island of Oahu in an effort to determine whether sufficient indications of geothermal potential exist within or adjacent to the peninsula to justify further, more detailed, exploratory efforts. An evaluation of existing geologic data as well as recently completed mapping on Mokapu indicate that the peninsula is located on the edge of or immediately adjacent to the inferred caldera of Koolau volcano. Geochemical surveys conducted within and around the Mokapu Peninsula included mercury and radon ground gas surveys as well as a limited evaluation of groundwater chemistry. Groundwater sampling on Mokapu Peninsula was severely restricted due to the absence of wells within the study area and thus water chemistry analyses were limited to the Nuupia fish ponds. Schlumberger resistivity soundings were completed in three locations on the peninsula: KVS1, in the northeast quadrant within the Ulupau crater, KVS2 in the northwest quadrant along the main jet runway, and KVS3 in the southeast along Mokapu Road. KVS1 encountered a relatively high resistivity to a depth of approximately 20 meters below sea level which was underlain by a basement resistivity of about 2 to 3 ohm meters. KVS2 and KVS3 detected similar resistivities of 2 to 3 ohm meters at much shallower depths (approximately equivalent to local sea level) below a thin, moderately resistive layer having an impedance ranging from 15 to 118 ohm meters.

Not Available

1981-08-01T23:59:59.000Z

411

Gravity and fault structures, Long Valley caldera, California  

DOE Green Energy (OSTI)

The main and catastrophic phase of eruption in Long Valley occurred 0.73 m.y. ago with the eruption of over 600 km/sup 3/ of rhyolitic magma. Subsequent collapse of the roof rocks produced a caldera which is now elliptical in shape, 32 km east-west by 17 km north-south. The caldera, like other large Quarternary silicic ash-flow volcanoes that have been studied by various workers, has a nearly coincident Bouguer gravity low. Earlier interpretations of the gravity anomaly have attributed the entire anomaly to lower density rocks filling the collapsed structure. However, on the basis of many additional gravity stations and supporting subsurface data from several new holes, a much more complex and accurate picture has emerged of caldera structure. From a three-dimensional inversion of the residual Bouguer gravity data we can resolve discontinuities that seem to correlate with extensions of pre-caldera faults into the caldera and faults associated with the ring fracture. Some of these faults are believed related to the present-day hydrothermal upflow zone and the zone of youngest volcanic activity within the caldera.

Carle, S.F.; Goldstein, N.E.

1987-07-01T23:59:59.000Z

412

Unique aspects of drilling and completing hot-dry-rock geothermal wells  

DOE Green Energy (OSTI)

Drilling operations at the Fenton Hill Hot Dry Rock (HDR) Geothermal Test Site have led to numerous developments needed to solve the problems caused by a very harsh downhole environment. A pair of deep wells were drilled to approximately 15,000 ft (4.6 km); formation temperatures were in excess of 600/sup 0/F (300/sup 0/C). The wells were directionally drilled, inclined at 35/sup 0/, one above the other, in a direction orthogonal to the least principal stress field. The well site is near the flank of a young silicic composite volcano in the Jemez Mountains of northern New Mexico. The completion of this pair of wells is unique in reservoir development. The lower well was planned as a cold water injector which will be cooled by the introduced water from the static geothermal gradient to about 80/sup 0/F (25/sup 0/C). The upper well will be heated during production to over 500/sup 0/F (250/sup 0/C). The well pair is designed to perform as a closed loop heat-extraction system connected by hydraulic fractures with a vertical spacing of 1200 ft between the wells. These conditions strongly constrain the drilling technique, casing design, cement formulation, and cementing operations.

Carden, R.S.; Nicholson, R.W.; Pettitt, R.A.; Rowley, J.C.

1983-01-01T23:59:59.000Z

413

Seismological investigation of crack formation in hydraulic rock fracturing experiments and in natural geothermal environments. Progress report, September 1, 1975--August 31, 1976  

DOE Green Energy (OSTI)

A variety of new seismological methods is being developed for determining the structure of a geothermal energy source region. In one approach, seismic signals generated in the source region are utilized by interpreting them in terms of the parameters of a seismic source model. For example, using a fluid-filled tensile crack driven by excess pressure in fluid as a model of volcanic tremor, formulas are derived which relate seismic observations with model parameters, and applied the formulas successfully to an actual eruption in Kilauea, giving a new insight to the magma transport in a volcano. Theoretical work is continued on the diffraction of seismic waves by a crack and it was demonstrated that the size and location of a crack can be well determined by particle motion near the crack at various frequencies. The method was applied to Kilauea Iki and the location of the magma lens was found to be in agreement with that estimated by another method. An extensive field experiment in Kilauea Iki was carried out with the cooperation of USGS and SANDIA, and interesting properties of the magma reservoir were revealed by a multiple use of active, passive, conventional, and unconventional seismic methods. The self-contained, digital event recorder has been developed and successfully tested.

Aki, K.

1976-09-01T23:59:59.000Z

414

Tsunami evacuation mathematical model for the city of Padang  

Science Conference Proceedings (OSTI)

Tsunami is a series of wave trains which travels with high speed on the sea surface. This traveling wave is caused by the displacement of a large volume of water after the occurrence of an underwater earthquake or volcano eruptions. The speed of tsunami decreases when it reaches the sea shore along with the increase of its amplitudes. Two large tsunamis had occurred in the last decades in Indonesia with huge casualties and large damages. Indonesian Tsunami Early Warning System has been installed along the west coast of Sumatra. This early warning system will give about 10-15 minutes to evacuate people from high risk regions to the safe areas. Here in this paper, a mathematical model for Tsunami evacuation is presented with the city of Padang as a study case. In the model, the safe areas are chosen from the existing and selected high rise buildings, low risk region with relatively high altitude and (proposed to be built) a flyover ring road. Each gathering points are located in the radius of approximately 1 km from the ring road. The model is formulated as an optimization problem with the total normalized evacuation time as the objective function. The constraints consist of maximum allowable evacuation time in each route, maximum capacity of each safe area, and the number of people to be evacuated. The optimization problem is solved numerically using linear programming method with Matlab. Numerical results are shown for various evacuation scenarios for the city of Padang.

Kusdiantara, R.; Hadianti, R.; Badri Kusuma, M. S.; Soewono, E. [Department of Mathematics Institut Teknologi Bandung, Bandung 40132 (Indonesia); Department of Civil Engineering Institut Teknologi Bandung, Bandung 40132 (Indonesia); Department of Mathematics Institut Teknologi Bandung, Bandung 40132 (Indonesia)

2012-05-22T23:59:59.000Z

415

Geological and Geobotanical Studies of Long Valley Caldera, CA, USA Utilizing New 5m Hyperspectral Imagery  

SciTech Connect

In May of 1989, a six month-long small magnitude earthquake swarm began beneath the Pleistocene-aged dacitic cumulovolcano Mammoth Mountain. The following year, increased mortality of trees in the Horseshoe Lake region was observed. Their deaths were initially attributed to the Sierran drought of the 1980's. In 1994 however, soil gas measurements made by the USGS confirmed that the kills were due to asphyxiation of the vegetation via the presence of 30-96 % CO{sub 2} in ground around the volcano[1]. Physiological changes in vegetation due to negative inputs into the ecological system such as anomalously high levels of magmatic CO{sub 2}, can be seen spectrally. With this phenomena in mind, as well as many other unanswered geological and geobotanical questions, seven lines of hyperspectral 5-meter HyMap data were flown over Long Valley Caldera located in eastern California on September 7, 1999. HyMap imagery provides the impetus to address geobotanical questions such as where the treekills are currently located at Mammoth and other locales around the caldera as well as whether incipient kills can be identified. The study site of the Horseshoe Lake treekills serves as a focus to the initial analyses of this extensive HyMap dataset due to both the treekill's geologically compelling origins and its status as a serious volcanic geohazard.

Martini, B.A.; Silver, E.A.; Potts, D.C.; Pickles, W.L.

2000-07-25T23:59:59.000Z

416

Effects of the Mt. Pinatubo eruption on the radiative and chemical processes in the troposphere and stratosphere  

Science Conference Proceedings (OSTI)

The LLNL 2-D zonally averaged chemical-radiative transport model of the global atmosphere was used to study the effects of the June 15, 1991 eruption of the Mt. Pinatubo volcano on stratospheric processes. SAGE-11 time-dependent aerosol surface area density and optical extinction data were used as input into the model. By the winter solstice, 1991, a maximum change in column ozone was observed in the equatorial region of {minus}2% (with heterogeneous chemical reactions on sulfuric acid aerosols) and {minus}5.5% (including heterogeneous reactions plus radiative feedbacks). Maximum local ozone decreases of 12% were derived in the equatorial region, at 25 km, for winter solstice 1991. Column NO{sub 2} peaked ({minus}14%) at 30 S in October 1991. Local concentrations of NO{sub x}, Cl{sub x}, and HO{sub x}, in the lower stratosphere, were calculated to have changed between 30 S and 30 N by {minus}40%, +80%, and +60% respectively.

Kinnison, D.E.; Grant, K.E.; Connell, P.S.; Wuebbles, D.J.

1992-07-05T23:59:59.000Z

417

Newberry Geothermal Pilot Project : Final Environmental Impact Statement.  

DOE Green Energy (OSTI)

BPA has decided to acquire 20 average megawatts (aMW) of electrical power from a privately-owned geothermal power plant on the west flank of Newberry Volcano in Deschutes County, Oregon. The Newberry Project will generate 30 aMW and will be developed, owned, and operated by CE Newberry, Inc. of Portland, Oregon. In addition, BPA has decided to grant billing credits to EWEB for 10 aMW of electrical power and to provide wheeling services to EWEB for the transmission of this power to their system. BPA expects the Newberry Project to be in commercial operation by November 1997. BPA has statutory responsibilities to supply electrical power to its utility industrial and other customers in the Pacific Northwest. The Newberry Project will be used to meet the electrical power supply obligations of these customers. The Newberry Project will also demonstrate the availability of geothermal power to meet power supply needs in the Pacific Northwest and is expected to be the first commercial geothermal plant in the region. The Newberry Project was selected under the BPA Geothermal Pilot Project Program. The goal of the Program is to initiate development of the Pacific Northwest`s large, but essentially untapped, geothermal resources, and to confirm the availability of this resource to meet the energy needs of the region. The primary underlying objective of this Program is to assure the supply of alternative sources of electrical power to help meet growing regional power demands and needs.

US Forest Service; US Bureau of Land Management; US Bonneville Power Administration

1994-09-01T23:59:59.000Z

418

Evaluation of the geothermal resource in the area of Albuquerque, New Mexico  

DOE Green Energy (OSTI)

Factors indicating a potential geothermal resource near Albuquerque are: (1) nearby volcanoes active as recently as 120,000 years ago, (2) gravity interpretation indicating a potential reservoir averaging 1.5 km thickness, (3) high heat flow near the city, (4) warm waters (>30/sup 0/C) in municipal wells, (5) recent seismicity indicating active faulting, thereby, allowing the possibility of deep hydrothermal circulation, (6) high shallow (<30 m) temperature gradients (>100/sup 0/C/km) discovered in our drillholes, (7) deeper (<500 m) gradients from water wells exceeding 80/sup 0/C/km, and (8) chemical analyses of 88 groundwater samples yielding estimated base reservoir temperatures as high as 190/sup 0/C. An area of elevated shallow temperature gradients (less than or equal to 140/sup 0/C/km) was discovered a few kilometers west of Albuquerque by our 69 hole drilling program. Resistivity, magnetic, and gravity measurements combined with computer modeling suggests that heated ground water is forced closer to the surface here by flow over a buried ridge. A well drilled nearby yielded the highest recorded temperature in the Albuquerque area at its maximum depth (32.8/sup 0/C at 364 m). The deep gradient is 35/sup 0/C/km. An oil test well close by reported large volumes of water at 1 km; therefore, the possibility of a low temperature (>50/sup 0/C) geothermal resource exists west of Albuquerque at less than 1 km depth.

Jiracek, G.R.; Swanberg, C.A.; Morgan, P.; Parker, M.D.

1983-07-01T23:59:59.000Z

419

Thermal springs list for the United States; National Oceanic and Atmospheric Administration Key to Geophysical Records Documentation No. 12  

DOE Green Energy (OSTI)

The compilation has 1702 thermal spring locations in 23 of the 50 States, arranged alphabetically by State (Postal Service abbreviation) and degrees of latitude and longitude within the State. It shows spring name, surface temperature in degrees Fahrenheit and degrees Celsius; USGS Professional Paper 492 number, USGS Circular 790 number, NOAA number, north to south on each degree of latitude and longitude of the listed. USGS 1:250,000-scale (AMS) map; and the USGS topographic map coverage, 1:63360- or 1:62500-scale (15-minute) or 1:24000-scale (7.5-minute) quadrangle also included is an alphabetized list showing only the spring name and the State in which it is located. Unnamed springs are omitted. The list includes natural surface hydrothermal features: springs, pools, mud pots, mud volcanoes, geysers, fumaroles, and steam vents at temperature of 20{sup 0}C (68[sup 0}F) or greater. It does not include wells or mines, except at sites where they supplement or replace natural vents presently or recently active, or, in some places, where orifices are not distinguishable as natural or artificial. The listed springs are located on the USGS 1:250,000 (AMS) topographic maps. (MHR)

Berry, G.W.; Grim, P.J.; Ikelman, J.A. (comps.)

1980-06-01T23:59:59.000Z

420

Board on Earth Sciences and Resources and its activities  

SciTech Connect

The Board on Earth Sciences and Resources (BESR) coordinates, the National Research Council`s advice to the federal government on solid-earth science issues. The board identifies opportunities for advancing basic research and understanding, reports on applications of earth sciences in such areas as disaster mitigation and resource utilization, and analyzes the scientific underpinnings and credibility of earth science information for resource, environmental and other applications and policy decision. Committees operating under the guidance of the Board conducts studies addressing specific issues within the earth sciences. The current committees are as follows: Committee on Geophysical and Environmental Data; Mapping Sciences Committee; Committee on Seismology; Committee on Geodesy; Rediscovering Geography Committee; Committee on Research Programs of the US Bureau of Mines. The following recent reports are briefly described: research programs of the US Bureau of Mines, first assessment 1994; Mount Rainier, active cascade volcano; the national geomagnetic initiative; reservoir class field demonstration program; solid-earth sciences and society; data foundation for the national spatial infrastructure; promoting the national spatial data infrastructure through partnerships; toward a coordinated spatial data infrastructure for the nation; and charting a course into the digital era; guidance to the NOAA`s nautical charting mission.

NONE

1995-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Phase III Drilling Operations at the Long Valley Exploratory Well (LVF 51-20)  

DOE Green Energy (OSTI)

During July-September, 1998, a jointly funded drilling operation deepened the Long Valley Exploratory Well from 7178 feet to 9832 feet. This was the third major drilling phase of a project that began in 1989, but had sporadic progress because of discontinuities in tiding. Support for Phase III came from the California Energy Commission (CEC), the International Continental Drilling Program (ICDP), the US Geological Survey (USGS), and DOE. Each of these agencies had a somewhat different agenda: the CEC wants to evaluate the energy potential (specifically energy extraction from magma) of Long Valley Caldera; the ICDP is studying the evolution and other characteristics of young, silicic calderas; the USGS will use this hole as an observatory in their Volcano Hazards program; and the DOE, through Sandia, has an opportunity to test new geothermal tools and techniques in a realistic field environment. This report gives a description of the equipment used in drilling and testing; a narrative of the drilling operations; compiled daily drilling reports; cost information on the project; and a brief summary of engineering results related to equipment performance and energy potential. Detailed description of the scientific results will appear in publications by the USGS and other researchers.

Finger, J.T.; Jacobson, R.D.

1999-06-01T23:59:59.000Z

422

Alteration of basaltic glasses from north-central British Columbia, Canada  

Science Conference Proceedings (OSTI)

Evidence of palagonitization is seen on all glasses studied from three Pleistocene subglacial volcanoes in north-central British Columbia, Canada. Samples from foreset breccias of Tuya Butte are more highly palagonitized than those from the tephra cones of Ash Mountain and Southern Tuya. Extensive palagonitization is generally associated with authigenic mineralization (clays, zeolites). Palagonite composition varies widely relative to glass composition, and palagonite can be broadly categorized as either high-Al or low-Al, depending on whether Al was retained or lost to aqueous solutions during palagonitization. Loss of Al during palagonitization is related to closed-system alteration, including precipitation of aluminosilicate authigenic cements. Microenvironment appears to be more influential than macroenvironment in determining the composition of palagonite. Palagonite rinds are compositionally zoned, generally becoming progressively higher in Al and Ca, and lower in Fe and Mg, towards the innermost (later-formed) portions of the rinds. Phillipsite is the first zeolite formed, followed by chabazite. Analcime and calcite occur in the most highly palagonitized samples. Mass balance considerations indicate higher mass loss where palagonitization has not proceeded to the point where zeolite solubility limits were attained in the local solution. Zeolites occur in closed-system conditions (low flow rates), where little net system mass loss or gain has occurred. The colloidal nature of palagonite allows the effective adsorption of Rb, Cs, Sr, Ba, and REEs.

Jercinovic, M.J. (Univ. of New Mexico, Albuquerque (USA)); Keil, K. (Univ. of Hawaii at Manoa, Honolulu (USA)); Smith, M.R.; Schmitt, R.A. (Oregon State Univ., Corvallis (USA))

1990-10-01T23:59:59.000Z

423

The Tiwi geothermal reservoir: Geology, geochemistry, and response to production  

Science Conference Proceedings (OSTI)

The Tiwi geothermal field is located on the Bicol Peninsula of Southern Luzon in the Philippines. The field is associated with the extinct Quaternary stratovolcano Mt. Malinao, one of a chain of volcanos formed as a result of crustal subduction along the Philippine Trench to the east. The geothermal reservoir is contained within a sequence of interlayered andesite flows and pyroclastic deposits that unconformably overlie a basement complex of marine sediments, metamorphic, and intrusive rocks. In its initial state, the Tiwi reservoir was an overpressured liquid-filled system containing near-neutral sodium chloride water at temperatures exceeding 260{degree}C. The reservoir is partially sealed at its top and sides by hydrothermal argillic alteration products and calcite deposition. Isolated portions of the reservoir contain a corrosive acid chloride-sulfate water associated with a distinctive advanced argillic mineral assemblage. Withdrawal of fluid for electricity generation has caused widespread boiling in the reservoir and the formation of steam zones. The resultant solids deposition in wellbores and near-wellbore formation has been mitigated by a combination of mechanical and chemical well stimulation. Mass withdrawal from the reservoir has also caused invasion of cold groundwater into the reservoir through former fluid outflow channels. During 1983-1987, several wells were flooded with cold water and ceased flowing. In response, PGI moved development drilling west to largely unaffected areas and undertook recompletion and stimulation programs. These programs effectively halted the decline in generation by 1988.

Hoagland, J.R.; Bodell, J.M. (Unocal Geothermal Div., Santa Rosa, CA (USA))

1990-06-01T23:59:59.000Z

424

Major results of geophysical investigations at Yucca Mountain and vicinity, southern Nevada  

SciTech Connect

In the consideration of Yucca Mountain as a possible site for storing high level nuclear waste, a number of geologic concerns have been suggested for study by the National Academy of Sciences which include: (1) natural geologic and geochemical barriers, (2) possible future fluctuations in the water table that might flood a mined underground repository, (3) tectonic stability, and (4) considerations of shaking such as might be caused by nearby earthquakes or possible volcanic eruptions. This volume represents the third part of an overall plan of geophysical investigation of Yucca Mountain, preceded by the Site Characterization Plan (SCP; dated 1988) and the report referred to as the Geophysical White Paper, Phase 1, entitled Status of Data, Major Results, and Plans for Geophysical Activities, Yucca Mountain Project (Oliver and others, 1990). The SCP necessarily contained uncertainty about applicability and accuracy of methods then untried in the Yucca Mountain volcano-tectonic setting, and the White Paper, Phase 1, focused on summarization of survey coverage, data quality, and applicability of results. For the most part, it did not present data or interpretation. The important distinction of the current volume lies in presentation of data, results, and interpretations of selected geophysical methods used in characterization activities at Yucca Mountain. Chapters are included on the following: gravity investigations; magnetic investigations; regional magnetotelluric investigations; seismic refraction investigations; seismic reflection investigations; teleseismic investigations; regional thermal setting; stress measurements; and integration of methods and conclusions. 8 refs., 60 figs., 2 tabs.

Oliver, H.W.; Ponce, D.A. [eds.] [Geological Survey, Menlo Park, CA (United States); Hunter, W.C. [ed.] [Geological Survey, Denver, CO (United States). Yucca Mountain Project Branch

1995-12-31T23:59:59.000Z

425

Calculations of turbidite deposits and tsunamis from submarine landslides  

SciTech Connect

Great underwater landslides like Storegga off the Norwegian coast leave massive deposits on the seafloor and must produce enormous tsunamis. Such events have occurred on continental slopes worldwide, and continue to do so. Triggers for such slides include earthquakes, gas hydrate releases, and underwater volcanos. We have petformed a numerical study of such landslides using the multi-material compressible hydrocode Sage in order to understand the relationship between the rheology of the slide material, the configuration of the resulting deposits on the seafloor, and the tsunami that is produced. Instabilities in the fluid-fluid mixing between slide material and seawater produce vortices and swirls with sizes that depend on the rheology of the slide material. These dynamical features of the flow may be preserved as ridges when the sliding material finally stops. Thus studying the configuration of the ridges in prehistoric slides may give us measures of the circumstances under which the slide was initiated. As part of this study, we have also done a convergence test showing that the slide velocity is sensitive to the resolution adopted in the simulation, but that extrapolation to infinite resolution is possible, and can yield good velocities. We will present two-dimensional simulations of schematic underwater slides for our study of rheology, and a three-dimensional simulation in bathymetric conditions that resemble the pre-Storegga Norwegian margin.

Gisler, Galen R [Los Alamos National Laboratory; Weaver, Robert P [Los Alamos National Laboratory; Gittings, Michael L [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

426

J. Plasma Fusion Res. SERIES, Vol. 8 (2009) Some Physical Mechanisms of Precursors to Earthquakes  

E-Print Network (OSTI)

The existence of precursors to earthquakes at different heights of the earths ionosphere is investigated. We analyze a mechanism for the generation of low-frequency large-scale zonal flows by higher frequency, small-scale internal-gravity waves in the electrically neutral troposphere. The nonlinear generation mechanism is based on parametric excitation of convective cells by finite amplitude internal-gravity waves. Measured density perturbations arising due to zonal flow generation may confirm the seismic origin of this mechanism. We also investigate nonlinear propagation of low-frequency seismic-origin internal-gravity perturbations in the stable stratified conductive E-layer. The predicted enhancement of atomic oxygen radiation at wavelength 557.7 nm due to the damping of nonlinear internal-gravity vortices is compared with the observed increase of the night-sky green light intensity before an earthquake. The good agreement suggests that ionospheric internal-gravity vortices can be considered as wave precursors of strong earthquakes. These precursors could be a tool for predicting the occurrence of a massive earthquake or volcano.

James W. Van Dam; Wendell Horton; Nodar L. Tsintsadze; Tamaz D. Kaladze; Trevor W. Garner; L. V. Tsamalashvili

2008-01-01T23:59:59.000Z

427

The High Altitude Water Cherenkov Observatory  

E-Print Network (OSTI)

The High Altitude Water Cherenkov (HAWC) observatory is a large field of view, continuously operated, TeV gamma-ray experiment under construction at 4,100 m a.s.l. in Mexico. The HAWC observatory will have an order of magnitude better sensitivity, angular resolution, and background rejection than its predecessor, the Milagro experiment. The improved performance will allow us to detect both transient and steady emissions, to study the Galactic diffuse emission at TeV energies, and to measure or constrain the TeV spectra of GeV gamma-ray sources. In addition, HAWC will be the only ground-based instrument capable of detecting prompt emission from gamma-ray bursts above 50 GeV. The HAWC observatory will consist of an array of 300 water Cherenkov detectors (WCDs), each with four photomultiplier tubes. This array is currently under construction on the flanks of the Sierra Negra volcano near the city of Puebla, Mexico. The first thirty WCDs (forming an array approximately the size of Milagro) were deployed in Summer...

,

2013-01-01T23:59:59.000Z

428

Sensitivity of the High Altitude Water Cherenkov Detector to Sources of Multi-TeV Gamma Rays  

E-Print Network (OSTI)

The High Altitude Water Cherenkov (HAWC) observatory is an array of large water Cherenkov detectors sensitive to gamma rays and hadronic cosmic rays in the energy band between 100 GeV and 100 TeV. The observatory will be used to measure high-energy protons and cosmic rays via detection of the energetic secondary particles reaching the ground when one of these particles interacts in the atmosphere above the detector. HAWC is under construction at a site 4100 meters above sea level on the northern slope of the volcano Sierra Negra, which is located in central Mexico at 19 degrees N latitude. It is scheduled for completion in 2014. In this paper we estimate the sensitivity of the HAWC instrument to point-like and extended sources of gamma rays. The source fluxes are modeled using both unbroken power laws and power laws with exponential cutoffs. HAWC, in one year, is sensitive to point sources with integral power-law spectra as low as 5x10^-13 cm^-2 sec^-1 above 2 TeV (approximately 50 mCrab) over 5 sr of the sky...

Abeysekara, A U; Alvarez, C; lvarez, J D; Arceo, R; Arteaga-Velzquez, J C; Solares, H A Ayala; Barber, A S; Baughman, B M; Bautista-Elivar, N; Belmont, E; BenZvi, S Y; Berley, D; Rosales, M Bonilla; Braun, J; Caballero-Lopez, R A; Carramiana, A; Castillo, M; Cotti, U; Cotzomi, J; de la Fuente, E; De Len, C; DeYoung, T; Hernandez, R Diaz; Diaz-Velez, J C; Dingus, B L; DuVernois, M A; Ellsworth, R W; Fernandez, A; Fiorino, D W; Fraija, N; Galindo, A; Garcia-Luna, J L; Garcia-Torales, G; Garfias, F; Gonzlez, L X; Gonzlez, M M; Goodman, J A; Grabski, V; Gussert, M; Hampel-Arias, Z; Hui, C M; Hntemeyer, P; Imran, A; Iriarte, A; Karn, P; Kieda, D; Kunde, G J; Lara, A; Lauer, R J; Lee, W H; Lennarz, D; Vargas, H Len; Linares, E C; Linnemann, J T; Longo, M; Luna-Garc\\'\\ia, R; Marinelli, A; Martinez, O; Mart\\'\\inez-Castro, J; Matthews, J A J; Miranda-Romagnoli, P; Moreno, E; Mostaf, M; Nava, J; Nellen, L; Newbold, M; Noriega-Papaqui, R; Oceguera-Becerra, T; Patricelli, B; Pelayo, R; Prez-Prez, E G; Pretz, J; Rivire, C; Rosa-Gonzlez, D; Salazar, H; Salesa, F; Sandoval, A; Santos, E; Schneider, M; Silich, S; Sinnis, G; Smith, A J; Sparks, K; Springer, R W; Taboada, I; Toale, P A; Tollefson, K; Torres, I; Ukwatta, T N; Villaseor, L; Weisgarber, T; Westerhoff, S; Wisher, I G; Wood, J; Yodh, G B; Younk, P W; Zaborov, D; Zepeda, A; Zhou, H

2013-01-01T23:59:59.000Z

429

Geologic evolution of the Jemez Mountains and their potential for future volcanic activity  

Science Conference Proceedings (OSTI)

Geophysical and geochemical data and the geologic history of the Rio Grande rift and the vicinity of the Jemez Mountains are summarized to determine the probability of future volcanic activity in the Los Alamos, New Mexico area. The apparent cyclic nature of volcanism in the Jemez Mountains may be related to intermittent thermal inputs into the volcanic system beneath the region. The Jemez lineament, an alignment of late Cenozoic volcanic centers that crosses the rift near Los Alamos, has played an important role in the volcanic evolution of the Jemez Mountains. Geophysical data suggest that there is no active shallow magma body beneath the Valles caldera, though magma probably exists at about 15 km beneath this portion of the rift. The rate of volcanism in the Jemez Mountains during the last 10 million years has been 5 x 10/sup -9//km/sup 2//y. Lava or ash flows overriding Laboratory radioactive waste disposal sites would have little potential to release radionuclides to the environment. The probability of a new volcano intruding close enough to a radioactive waste disposal site to effect radionuclide release is 2 x 10/sup -7//y.

Burton, B.W.

1982-01-01T23:59:59.000Z

430

Preliminary reservoir engineering studies of the Miravalles geothermal field, Costa Rica  

DOE Green Energy (OSTI)

The Earth Sciences Division of Lawrence Berkeley Laboratory in cooperation with the Instituto Costarricense de Electricidad is conducting a reservoir engineering study of the Miravalles geothermal field, Costa Rica. Using data from eight exploration wells a two-dimensional areal, natural-state model of Miravalles has been developed. The model was calibrated by fitting the observed temperature and pressure distributions and requires a geothermal upflow zone in the northern part of the field, associated with the Miravalles volcano and an outflow towards the south. The total hot (about 260{degrees}C) water recharge is 130 kg/s, corresponding to a thermal input of about 150 MWt. On the basis of the natural-state model a two-dimensional exploitation model was develope. The field has a production area of about 10 km{sup 2}, with temperatures exceeding 220{degrees}C. The model indicated that power generation of 55 MWe can be maintained for 30 years, with or without injection of the separated geothermal brine. Generation of 110 MWe could be problematic. Until more information becomes available on the areal extent of the field and the properties of the reservoir rocks, especially their relative permeability characteristics, it is difficult to ascertain if 110 MWe can be sustained during a 30-year period.

Haukwa, C.; Bodvarsson, G.S. Lippmann, M.J. [Lawrence Berkeley Lab., CA (United States); Mainieri, A. [Instituto Costarricense de Electricidad, San Jose (Costa Rica)

1992-01-01T23:59:59.000Z

431

Structure of continental rifts: Role of older features and magmatism  

SciTech Connect

Recent geological and geophysical studies in several continental rifts have begun to shed light on the details of the processes which govern the structural evolution of these important exploration targets. In Kenya and Tanzania, the classic East African rift has been the object of several investigations which reveal that its location follows the boundary (suture ) between the Tanzanian craton (Archean) and Mozambiquan belt (Proterozoic), The Baikal rift also follows a similar boundary, and the Mid-continent rift of North America appears to do the same. Rifts themselves often act as zones of weakness which are reactivated by younger tectonic regimes. The classic North American example of this effect is the Eocambrian Southern Oklahoma aulacogen which was deformed to create the Anadarko basin and Wichita uplift in the late Paleozoic. The Central basin platform has a similar history although the original rift formed at [approximately]1,100Ma. Integration of geophysical data with petrologic and geochemical data from several rift zones has also provided a new picture of the nature and extent of magmatic modification of the crust. An interesting contradiction is that Phanerozoic rifts, except the Afar region, show little evidence for major magmatic modification of the crust whereas, at least in North America, many Precambrian rifts are associated with very large mafic bodies in the crust. The Kenya rift displays evidence for modification of the lower crust in a two-phase magmatic history, but upper crustal magmatic features are limited to local intrusions associated with volcanoes. In this rift, complex basement structure plays a much more important role than previously realized, and the geophysical signatures of basement structure and magmatism are easy to confuse. If this is also the case in other rifts, additional rift basins remain to be discovered.

Keller, G.R. (Univ. of Texas, El Paso, TX (United States))

1996-01-01T23:59:59.000Z

432

Sound speed in liquidgas mixtures: Waterair and water  

E-Print Network (OSTI)

The sound speed of a two-phase fluid, such as a magma-gas, water-air, or water-steam mixture, is dramatically different from the sound speed of either pure component. In numerous geologic situations the sound speed of such two-phase systems may be of interest: in the search for magma reservoirs, in seismic exploration of geothermal areas, in prediction of P wave velocity decreases prior to earthquakes, and in inversion of crustal and upper mantle seismic records. Probably most dramatically, fluid flow characteristics during eruptions of volcanoes and geysers are strongly dependent on the sound speed of erupting two-phase (or multiphase) fluids. In this paper the sound speeds of water, air, steam, water-air mixtures, and water-steam mixtures are calculated. It is demonstrated that sound speeds calculated from classical acoustic and fluid dynamics analyses agree with results obtained from finite amplitude 'vaporization wave ' theory. To the extent that air and steam are represented as perfect gases with an adiabatic exponent , independent of temperature, their sound speeds vary in a simple manner directly with the square root of the absolute temperature. The sound speed of pure liquid water is a complex function of pressure and temperature and is given here to 8 kbar, 900C. In pure water at all pressures the sound speed attains a maximum value near 100C and decreases at higher temperatures; at high pressures the decrease is continuous, but at pressures below 1 kbar the sound speed reaches a minimum value in the

Susan Werner Kieffer

1977-01-01T23:59:59.000Z

433

Oil and gas developments in West Coast area in 1981  

SciTech Connect

The total exploratory footage and number of wells drilled in the onshore area of California during 1981 increased approximately 10% and20%, respectively, over the 1980 figures. Both the average footage drilled per well (5579 ft) and the percentage of success (32.7%) showed declines from 1980. Eight wildcats established new fields in 1981. Two of the wildcats discovered new oil fields and 6 found new gas fields. An additional gas find has been treated as a discovery because of its stratigraphic significance. Onshore development drilling included 2078 wells; 97% of these were completed as successful producers, the same percentage as in 1980. For the California offshore, just 5 exploratory well completions were reported to the Committee on Statistics of Drilling in 1981; only 2 were successful. Texaco announced its Pitas Point gas field extension in May, and Chevron announced a new oil field discovery, the Point Arguello, in October. There were 118 development wells drilled, of which 99 (83.9%) were successful. Development footage and number of wells were up, but the percentage of success declined from 90% in 1980. California's oil production reached an all-time high of 384.8 million bbl in 1981. The state's previous record, set in 1968, was 375.4 million bbl. Geothermal activity in California centered on development of the proven Imperial Valley and Geysers areas and the discovery of the Coso area in Inyo County. Activity in Oregon included evaluation of the Mount Hood and Newberry Volcano areas. Oil and gas exploratory drilling in Oregon druing 1981 led to the discovery of a new gas field by American Quasar in Linn County and to the establishment of a new gas pool by Reichhold Energy at the Mist field in Columbia County. The major portion of Washington's exploratory drilling in 1981 was carried out by Shell in Kittitas County in the south-central part of the state. At last report, the hydrocarbon accumulations found had been deemed noncommercial.

Dignes, T.W. (Chevron USA Inc., Concord, CA); Woltz, D.

1982-11-01T23:59:59.000Z

434

Paleoseismology of latest Pleistocene and Holocene fault activity in central Oregon  

SciTech Connect

Latest Pleistocene and Holocene fault activity in Oregon concentrates along four zones that splay northward from seismically active faults along the Central Nevada and Eastern California seismic zones. The Central Oregon fault zone is one of these zones, which splays northward from dextral faults of the Walker Lane, stretching across the flanks of several ranges in south-central Oregon along a N20[degree]W trend, and ultimately merges with the Cascade volcanic arc near Newberry volcano. Aerial-photo interpretations and field investigations reveal fault scarps with, on average about 4 m, but in places as much as [approximately]10 m of vertical expression across latest Pleistocene pluvial lake deposits and geomorphic surfaces. Trenches across three different faults in the Central Oregon zone reveal evidence for multiple episodes of faulting in the form of fault-related colluvial deposits and deformed horizons which have been cut by younger fault movements. Trench exposures reveal faults with relatively steep dips and anastomosing traces, which are interpreted locally as evidence for a small oblique-slip component. Vertical offsets measured in the trenches are [approximately]2 m or more for each event. Radiocarbon analyses and preliminary tephra correlations indicate that the exposed deposits are [approximately]30,000 yr in age and younger, and record the decline of latest Pleistocene pluvial lakes. Commonly, reworked or deformed lacustrine deposits and interlayered and faulted colluvial deposits mark the second and third events back, which probably occurred in the Latest Pleistocene, at a time during low to moderate lake levels. If offsets of the past 18,000 yr are representative of the long-term average, then faults along this zone have slip rates of from 0.2 mm/yr to 0.6 mm/yr and recurrence intervals that range from [approximately]4,000 yr to 11,000 yr.

Pezzopane, S.K.; Weldon, R.J. II (Univ. of Oregon, Eugene, OR (United States). Dept. of Geological Sciences)

1993-04-01T23:59:59.000Z

435

Implementation Plan for the Hawaii Geothermal Project Environmental Impact Statement (DOE Review Draft:)  

SciTech Connect

The US Department of Energy (DOE) is preparing an Environmental Impact Statement (EIS) that identifies and evaluates the environmental impacts associated with the proposed Hawaii Geothermal Project (HGP), as defined by the State of Hawaii in its 1990 proposal to Congress (DBED 1990). The location of the proposed project is shown in Figure 1.1. The EIS is being prepared pursuant to the requirements of the National Environmental Policy Act of 1969 (NEPA), as implemented by the President's Council on Environmental Quality (CEQ) regulations (40 CFR Parts 1500-1508) and the DOE NEPA Implementing Procedures (10 CFR 1021), effective May 26, 1992. The State's proposal for the four-phase HGP consists of (1) exploration and testing of the geothermal resource beneath the slopes of the active Kilauea volcano on the Island of Hawaii (Big Island), (2) demonstration of deep-water power cable technology in the Alenuihaha Channel between the Big Island and Mau, (3) verification and characterization of the geothermal resource on the Big Island, and (4) construction and operation of commercial geothermal power production facilities on the Big Island, with overland and submarine transmission of electricity from the Big Island to Oahu and possibly other islands. DOE prepared appropriate NEPA documentation for separate federal actions related to Phase 1 and 2 research projects, which have been completed. This EIS will consider Phases 3 and 4, as well as reasonable alternatives to the HGP. Such alternatives include biomass coal, solar photovoltaic, wind energy, and construction and operation of commercial geothermal power production facilities on the Island of Hawaii (for exclusive use on the Big Island). In addition, the EIs will consider the reasonable alternatives among submarine cable technologies, geothermal extraction, production, and power generating technologies; pollution control technologies; overland and submarine power transmission routes; sites reasonably suited to support project facilities in a safe and environmentally acceptable manner; and non-power generating alternatives, such as conservation and demand-side management.

None

1992-09-18T23:59:59.000Z

436

Holocene lahars and their byproducts along the historical path of the White River between Mount Rainier and Seattle: Geological Society of America Field Trip  

SciTech Connect

Clay-poor lahars of late Holocene age from Mount Rainier change down the White River drainage into lahar-derived fluvial and deltaic deposits that filled an arm of Puget Sound between the sites of Auburn and Seattle, 110-150 km downvalley from the volcano's summit. Lahars in the debris-flow phase left cobbly and bouldery deposits on the walls of valleys within 70 km of the summit. At distances of 80-110 km, transitional (hyperconcentrated) flows deposited pebbles and sand that coat terraces in a gorge incised into glacial drift and the mid-Holocene Osceola Mudflow. On the broad, level floor of the Kent valley at 110-130 km, lahars in the runout or streamflow phase deposited mostly sand-size particles that locally include the trunks of trees probably entrained by the flows. Beyond 130 km, in the Duwamish valley of Tukwila and Seattle, laminated andesitic sand derived from Mount Rainier built a delta northward across the Seattle fault. This distal facies, warped during an earthquake in A.D. 900-930, rests on estuarine mud at depths as great as 20 m. The deltaic filling occurred in episodes that appear to overlap in time with the lahars. As judged from radiocarbon ages of twigs and logs, at least three episodes of distal deposition postdate the Osceola Mudflow. One of these episodes occurred about 2200-2800 cal yr B.P., and two others occurred 1700-1000 cal yr B.P. The most recent episode ended by about the time of the earthquake of A.D. 900-930. The delta's northward march to Seattle averaged between 6 and 14 m/yr in the late Holocene.

Brown, T A; Zehfuss, P H; Atwater, B F; Vallance, J W; Brenniman, H

2003-10-16T23:59:59.000Z

437

Ash cloud aviation advisories  

SciTech Connect

During the recent (12--22 June 1991) Mount Pinatubo volcano eruptions, the US Air Force Global Weather Central (AFGWC) requested assistance of the US Department of Energy`s Atmospheric Release Advisory Capability (ARAC) in creating volcanic ash cloud aviation advisories for the region of the Philippine Islands. Through application of its three-dimensional material transport and diffusion models using AFGWC meteorological analysis and forecast wind fields ARAC developed extensive analysis and 12-hourly forecast ash cloud position advisories extending to 48 hours for a period of five days. The advisories consisted of ``relative`` ash cloud concentrations in ten layers (surface-5,000 feet, 5,000--10,000 feet and every 10,000 feet to 90,000 feet). The ash was represented as a log-normal size distribution of 10--200 {mu}m diameter solid particles. Size-dependent ``ashfall`` was simulated over time as the eruption clouds dispersed. Except for an internal experimental attempt to model one of the Mount Redoubt, Alaska, eruptions (12/89), ARAC had no prior experience in modeling volcanic eruption ash hazards. For the cataclysmic eruption of 15--16 June, the complex three-dimensional atmospheric structure of the region produced dramatically divergent ash cloud patterns. The large eruptions (> 7--10 km) produced ash plume clouds with strong westward transport over the South China Sea, Southeast Asia, India and beyond. The low-level eruptions (< 7 km) and quasi-steady-state venting produced a plume which generally dispersed to the north and east throughout the support period. Modeling the sequence of eruptions presented a unique challenge. Although the initial approach proved viable, further refinement is necessary and possible. A distinct need exists to quantify eruptions consistently such that ``relative`` ash concentrations relate to specific aviation hazard categories.

Sullivan, T.J.; Ellis, J.S. [Lawrence Livermore National Lab., CA (United States); Schalk, W.W.; Nasstrom, J.S. [EG and G, Inc., Pleasanton, CA (United States)

1992-06-25T23:59:59.000Z

438

Potential effects of the Hawaii geothermal project on ground-water resources on the Island of Hawaii  

DOE Green Energy (OSTI)

This report provides data and information on the quantity and quality of ground-water resources in and adjacent to proposed geothermal development areas on the Island of Hawaii Geothermal project for the development of as much as 500 MW of electric power from the geothermal system in the East Rift Zone of Kilauea Volcano. Data presented for about 31 wells and 8 springs describe the chemical, thermal, and hydraulic properties of the ground-water system in and adjacent to the East Rift Zone. On the basis of this information, potential effects of this geothermal development on drawdown of ground-water levels and contamination of ground-water resources are discussed. Significant differences in ground-water levels and in the salinity and temperature of ground water within the study area appear to be related to mixing of waters from different sources and varying degrees of ground-water impoundment by volcanic dikes. Near Pahoa and to the east, the ground-water system within the rift is highly transmissive and receives abundant recharge from precipitation; therefore, the relatively modest requirements for fresh water to support geothermal development in that part of the east rift zone would result in minimal effects on ground-water levels in and adjacent to the rift. To the southwest of Pahoa, dike impoundment reduces the transmissivity of the ground-water system to such an extent that wells might not be capable of supplying fresh water at rates sufficient to support geothermal operations. Water would have to be transported to such developments from supply systems located outside the rift or farther downrift. Contaminant migration resulting from well accidents could be rapid because of relatively high ground-water velocities in parts of the region. Hydrologic monitoring of observation wells needs to be continued throughout development of geothermal resources for the Hawaii Geothermal Project to enable the early detection of leakage and migration of geothermal fluids.

Sorey, M.L.; Colvard, E.M.

1994-07-01T23:59:59.000Z

439

Executive Summary  

E-Print Network (OSTI)

Air traffic is partly reopening., based on more accurate risk assessments using data collected in a number of test flights that have been conducted on Saturday 17 and Sunday 18 April. Lufthansa and Air Frances KLM unit reported successful testing of flights without passengers during the weekend, and Air France said an inspection of an Airbus A320 flown yesterday from Paris to Toulouse showed no anomalies. The Association of European Airlines, which represents 36 carriers, said it wants an immediate assessment of the airspace restrictions. (Business week) Additional flights authorized by Italian ENAC and have found no measureable traces of the ash in the Italian air space. This is a statement by the Italian Civil Protection Italy is constantly monitoring the fallout of ashes produced by the eruption of the Icelandic volcano. Following a preliminary assessment made on the Alps snow surface, no ashes fallout has been detected. To this regard, we will be grateful to the Participating States involved in the phenomenon if they would kindly provide us with information on the ashes fallout in their respective countries. The Italian scientific community and the national Agencies responsible of flight control and safety has requested detailed information regarding the threshold values adopted by the scientific models currently under analysis of the VAAC (Volcanic Ash Advisory Centre) based in London. In fact, the VAAC reports are increasingly precise in their delineation of the area covered by ash (thinner polygons). Yet, the criteria for this delineation (ash concentration thresholds) are unknown. The satellite image below shows the ash plume as of 18 April 2010, as seen from MODIS optical satellite imagery.

unknown authors

2010-01-01T23:59:59.000Z

440

Sequence stratigraphy of the late Pleistocene - Holocene deposits on the northwestern margin of the South Caspian Basin  

E-Print Network (OSTI)

Interpretation of 900 km of a closely spaced grid of high-resolution seismic profiles over the northwestern margin of South Caspian Basin (SCB) allows recognition and study of six late Pleistocene - Holocene depositional sequences. Sequence stratigraphy analysis of sedimentary strata from 117,000 years B.P. to present led to the identification of a highstand systems tract, two transgressive systems tracts and six lowstand systems tracts. Each systems tract is characterized by specific seismic facies. Diverse depositional processes on the northwestern margin of the SCB are suggested by the thirteen seismic facies patterns recognized in the study area. Two distinct progradational complexes were interpreted within Sequence III and Sequences IV and V in the northeastern and northwestern parts of the study area, respectively. Stratigraphic interpretation of the sequences provided important information on parameters that control depositional architectures, such as lake level fluctuations, tectonic dynamics, and sediment supply. High sedimentation rates combined with a series of high-frequency and high-amplitude lake-level fluctuations, abrupt changes at the shelf edge, abnormally high formation pressure, and high tectonic activity during Quaternary time resulted in the development of a variety of complex geologic drilling hazards. I distinguished three types of hazards as a result of this study: mud volcanoes, sediment instability, and shallow gas. The 2D high-resolution seismic dataset from the northwestern margin of the SCB allowed more detailed seismic sequence stratigraphic analysis in the study area than has previously been attempted. In particular, it has a clear application in deciphering sediment supply and relative lake level changes as well as tectonic relationship of the northwestern shelf margin of the SCB. Results of this work led us towards better understanding of recent depositional history, improved our knowledge of the nature of the basin tectonics, climate history and styles of and controls on sedimentation processes within a sequence stratigraphic framework during the late Pleistocene-Holocene time.

Rahmanov, Ogtay Rasim

2003-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
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441

Project Management Plan for the Hawaii Geothermal Project Environmental Impact Statement  

DOE Green Energy (OSTI)

In 1990, Congress appropriated $5 million (Pu 101-514) for the State of Hawaii to use in Phase 3 of the Hawaii Geothermal Project (HGP). As defined by the State in its 1990 proposal to Congress, the HGP would consist of four phases: (1) exploration and testing of the geothermal resource associated with the Kilauea Volcano on the Island of Hawaii (the Big Island), (2) demonstration of deep-water power transmission cable technology in the Alenuihaha Channel between the Big Island and Maui, (3) verification and characterization of the geothermal resource on the Big Island, and (4) construction and operation of commercial geothermal power production facilities on the Big Island, with overland and submarine transmission of electricity from the Big Island to Oahu and possibly other islands (DBED 1990). Because it considered Phase 3 to be research and not project development or construction, Congress indicated that allocation of this funding would not be considered a major federal action under NEPA and would not require an EIS. However, because the project is highly visible, somewhat controversial, and involves a particularly sensitive environment in Hawaii, Congress directed in 1991 (House Resolution 1281) that ''...the Secretary of Energy shall use such sums as are necessary from amounts previously provided to the State of Hawaii for geothermal resource verification and characterization to conduct the necessary environmental assessments and/or environmental impact statement (EIS) for the geothermal initiative to proceed''. In addition, the U.S. District Court of Hawaii (Civil No. 90-00407, June 25, 1991) ruled that the federal government must prepare an EIS for Phases 3 and 4 before any further disbursement of funds was made to the State for the HGP. This Project Management Plan (PMP) briefly summarizes the background information on the HGP and describes the project management structure, work breakdown structure, baseline budget and schedule, and reporting procedures that have been established for the project. The PMP does not address in detail the work that has been completed during the scoping process and preparation of the IP. The PMP has been developed to address the tasks required in preparing the Draft Environmental Impact Statement (DEIS), the public comment period, and the Final Environmental Impact Statement (FEIS).

Reed, R.M.; Saulsbury, J.W.

1993-06-01T23:59:59.000Z

442

NGA Industry Critique of the Exploration Component  

SciTech Connect

The author critiques the Exploration component of the U.S. Department of Energy (DOE) Geothermal Program Review X. The comments focus principally on the hydrothermal portion of the DOE program, but he also makes some commentary on the Long Valley Exploratory Well and Geopressured-Geothermal components of the program, as well as some general comments. Before I do that, I would like to review the current state of geothermal exploration in the United States. According to Koenig (1989, 1990) who critiqued the DOE Geothermal Program in those years, geothermal exploration in the western U.S. has been conducted in virtually all of the apparent geothermal resource areas. Many of these areas which were under exploration in the 1960s and 1970s, and were explored in part under the U.S. DOE Industry Coupled Program have progressed to commercial status in the 80s. The DOE March (1992) Draft Multi-Year Program Plan for FY 1993-1997 states that 8 out of the 14 geothermal resource areas explored under this Industry Coupled Program in the late 1970s are currently under production. I do not think we will find anyone in this room, in the geothermal industry, or in the United States that will argue with the clear and outstanding success of that government program. When the prices of oil dropped in the 1980s, many geothermal operators left the industry, and with the dramatic decrease in activity, many of the service companies went by the wayside also. By and large, the domestic geothermal industry today is emaciated. As a result of the capital intensive nature of geothermal development, the historical long lead times to go from exploration to production, the highly entrepreneurial nature of the industry, and the lack of an economic market, virtually no new exploration has been conducted in the U.S. in about 10 years. The consequence of this lack of activity is an almost nonexistent geothermal reserve base, outside of known producing fields and their immediate surrounds. The U.S. DOE Deep Thermal Gradient Drilling Program in the Cascade Range is a notable exception to this stagnant condition. Like it's predecessor, the industry coupled program, the Thermal Gradient Drilling Program identified at least, one potentially viable geothermal resource: Newberry Volcano.

Iovanetti, J.L.

1992-03-24T23:59:59.000Z

443

Adak Island, Alaska, Microearthquake survey: Preliminary Hypocenter Determinations  

DOE Green Energy (OSTI)

Microearthquakes, defined as shocks having magnitudes less than 4, are commonly recorded in the vicinity of geothermal manifestations and volcanism. They have been mapped from producing geothermal fields as well as those not yet developed, in such places as Iceland, El Salvador, Japan, Kenya and the US. Microearthquakes have been recorded at several geothermal sites in the Imperial Valley and Coso Hot Springs, California; Kilbourne Hole, New Mexico; Yellowstone National Park, Wyoming; and The Geysers, California, where there is debate over whether or not the seismicity is induced by steam production. Seismicity occurs around active volcanoes, but appears reduced directly over zones of high temperature or magma, where the depth of the brittle fracture zone is shallow, as over Yellowstone caldera. In areas of active hydrothermalism, regional stress is likely to be relieved by low-level seismicity rather than occasional large ruptures, owing to the high temperatures, presence of fluids, and crustal weakening due to alteration and fracturing. Active faulting maintains the permeability of the system, which in its absence, might otherwise seal. on the microscopic scale, pore-fluid pressures rise as a result of heating, resulting in the decrease of effective pressure at the pore-mineral boundary. When this effective pressure becomes less than the rock's tensile strength, the pore ruptures; and if it intersects a through-going fracture under hydrostatic pressure can result in a shock detectable on seismographs at the surface. Such a mechanism might also account for the swarms of very small events seen in a number of geothermal areas. A microearthquake survey was conducted on Adak Island, Alaska for the purpose of identifying seismicity associated with a possible geothermal reservoir. During 30 days of recording in September and October 1982, 190 seismic events were recorded on two or more stations of a nine-station network. Of the total, 33 were of local origin, and of these 24 were locatable. Utilizing a 5 km/sec constant velocity earth model, the hypocenters define a structure dipping north-northwestward toward the Bering Sea, beneath Mt. Adagdak. many of the events took place beneath the Adagdak peninsula in an area in which hot springs discharge and where other geophysical evidences suggest a geothermal reservoir. A similar NNW-dipping fault plane was deduced from a 9-day microearthquake survey conducted in 1974. At that time all of the activity occurred beneath the sea. the projected surface trace lies NNW of that deduced form the present survey. It is quite likely that the mapped structure and attendant fractures control a hydrothermal system by providing the necessary permeability for maintaining circulation of hot waters within the upper several kilometers of the surface. Only preliminary analysis of the records fell within the scope of the present project. The work should be supplemented with the application of a locally appropriate earth model, 3D fault-mapping, first-motion studies leading to fault-plane solutions, and computations of event magnitudes.

Lange, Arthur L.; Avramenko, Walter

1982-11-05T23:59:59.000Z

444

OECD MCCI project Melt Eruption Test (MET) design report, Rev. 2. April 15, 2003.  

SciTech Connect

The Melt Attack and Coolability Experiments (MACE) program at Argonne National Laboratory addressed the issue of the ability of water to cool and thermally stabilize a molten core-concrete interaction when the reactants are flooded from above. These tests provided data regarding the nature of corium interactions with concrete, the heat transfer rates from the melt to the overlying water pool, and the role of noncondensable gases in the mixing processes that contribute to melt quenching. The Melt Coolability and Concrete Interaction (MCCI) program is pursuing separate effect tests to examine the viability of the melt coolability mechanisms identified as part of the MACE program. These mechanisms include bulk cooling, water ingression, volcanic eruptions, and crust breach. At the second PRG meeting held at ANL on 22-23 October 2002, a preliminary design1 for a separate effects test to investigate the melt eruption cooling mechanism was presented for PRG review. At this meeting, NUPEC made several recommendations on the experiment approach aimed at optimizing the chances of achieving a floating crust boundary condition in this test. The principal recommendation was to incorporate a mortar sidewall liner into the test design, since data from the COTELS experiment program indicates that corium does not form a strong mechanical bond with this material. Other recommendations included: (i) reduction of the electrode elevation to well below the melt upper surface elevation (since the crust may bond to these solid surfaces), and (ii) favorably taper the mortar liner to facilitate crust detachment and relocation during the experiment. Finally, as a precursor to implementing these modifications, the PRG recommended the development of a design for a small-scale scoping test intended to verify the ability of the mortar liner to preclude formation of an anchored bridge crust under core-concrete interaction conditions. This revised Melt Eruption Test (MET) plan is intended to satisfy these PRG recommendations. Specifically, the revised plan focuses on providing data on the extent of crust growth and melt eruptions as a function of gas sparging rate under well-controlled experiment conditions, including a floating crust boundary condition. The overall objective of MET is to determine to what extent core debris is rendered coolable by eruptive-type processes that breach the crust that rests upon the melt. The specific objectives of this test are as follows: (1) Evaluate the augmentation in surface heat flux during periods of melt eruption; (2) Evaluate the melt entrainment coefficient from the heat flux and gas flow rate data for input into models that calculate ex-vessel debris coolability; (3) Characterize the morphology and coolability of debris resulting from eruptive processes that transport melt into overlying water; and (4) Discriminate between periods when eruptions take the form of particle ejections into overlying water, leading to a porous particle bed, and single-phase extrusions, which lead to volcano-type structures.

Farmer, M. T.; Lomperski, S.; Kilsdonk, D. J.; Aeschlimann, R. W.; Basu, S. (Nuclear Engineering Division); (NRC)

2011-05-23T23:59:59.000Z

445

Geothermal Information Dissemination and Outreach  

SciTech Connect

Project Purpose To enhance technological and topical information transfer in support of industry and government efforts to increase geothermal energy use in the United States (power production, direct use, and geothermal groundsource heat pumps). Project Work GRC 2003 Annual Meeting. The GRC convened the meeting on Oct. 12-15, 2003, at Morelia's Centro de Convenciones y ExpoCentro in Mexico under the theme, International Collaboration for Geothermal Energy in the Americas. The event was also sponsored by the Comision Federal de Electricidad. ~600 participants from more than 20 countries attended the event. The GRC convened a Development of Geothermal Projects Workshop and Geothermal Exploration Techniques Workshop. GRC Field Trips included Los Azufres and Paricutin Volcano on Oct. 11. The Geothermal Energy Association (Washington, DC) staged its Geothermal Energy Trade Show. The Annual Meeting Opening Session was convened on Oct. 13, and included the governor of Michoacan, the Mexico Assistant Secretary of Energy, CFE Geothermal Division Director, DOE Geothermal Program Manager, and private sector representatives. The 2003 Annual Meeting attracted 160 papers for oral and poster presentations. GRC 2004. Under the theme, Geothermal - The Reliable Renewable, the GRC 2004 Annual Meeting convened on Aug. 29-Sept. 1, 2004, at the Hyatt Grand Champions Resort at Indian Wells, CA. Estimated total attendance (including Trade Show personnel, guests and accompanying persons) was ~700. The event included a workshop, Geothermal Production Well Pump Installation, Operation and Maintenance. Field trips went to Coso/Mammoth and Imperial Valley/Salton Sea geothermal fields. The event Opening Session featured speakers from the U.S. Department of Energy, U.S. Department of the Interior, and the private sector. The Geothermal Energy Association staged its Geothermal Energy Trade Show. The Geothermal Education Office staged its Geothermal Energy Workshop. Several local radio and TV station interviews were conducted during the event. Technical Program included 136 technical papers. All were published in Volume 28 of the GRC Transactions. Volume 28, GRC Transactions Pblished as a high-quality, durable casebound volume, Volume 28 of the Transactions published 119 out of 136 technical papers (692 pp) presented at the GRC 2004 Annual Meeting. The papers were submitted by geothermal experts and professionals from around the world. The papers were reviewed over a 2-day period by 25 volunteer (in-kind) geothermal experts from the private sector and DOE National Laboratories. GRC staff received and cataloged the papers, and maintained interaction with authors for revisions and corrections. DOE Geothermal Technologies Newsletter The Office of Geothermal Technologies quarterly newsletter, Geothermal Technologies, is produced at the National Renewable Energy Laboratory (NREL). This 2-color, 4- to 16-page newsletter summarizes federal geothermal research and development projects and other DOE geothermal news. The GRC receives newsletter disk copy and color-key proof from NREL for each newsletter, then follows through with print production and distribution. Circulation is 1,000 per issue (plus 300 copies of the newsletter shipped to NREL for internal and public distribution). During the project period, the GRC printed, stitched and bound the Geothermal Technologies newsletter into the Sept/Oct 2003, Jan/Feb 2004, and May/June 2004 editions of the GRC Bulletin. Multiple copies (300) of the newsletter sans magazine were provided to NREL for internal DOE distribution. GRC Geothermal Research Library The GRC has built the largest and most comprehensive library in the world devoted to geothermal energy. The GRC Geothermal Library provides rapid accessibility to the majority of technical literature crafted over the past 30 years, and preserves hard copy and on-line databases for future use by geothermal researchers and developers. A bibliography for over half of the physical library's citations is available through keyword search on the GRC web site (www.geothe

Ted J. Clutter, Geothermal Resources Council Executive Director

2005-02-18T23:59:59.000Z

446

Phase 2 and 3 Slim Hole Drilling and Testing at the Lake City, California Geothermal Field  

DOE Green Energy (OSTI)

During Phases 2 and 3 of the Lake City GRED II project two slim holes were cored to depths of 1728 and 4727 ft. Injection and production tests with temperature and pressure logging were performed on the OH-1 and LCSH-5 core holes. OH-1 was permanently modified by cementing an NQ tubing string in place below a depth of 947 ft. The LCSH-1a hole was drilled in Quaternary blue clay to a depth of 1727 ft and reached a temperature of 193 oF at a depth of 1649 ft. This hole failed to find evidence of a shallow geothermal system east of the Mud Volcano but the conductive temperature profile indicates temperatures near 325 oF could be present below depth of 4000 ft. The LCSH-5 hole was drilled to a depth of 4727 ft and encountered a significant shallow permeability between depths of 1443 and 1923 ft and below 3955 ft. LCSH-5 drilled impermeable Quaternary fanglomerate to a depth of 1270 ft. Below 1270 ft the rocks consist primarily of Tertiary sedimentary rocks. The most significant formation deep in LCSH-5 appears to be a series of poikoilitic mafic lava flows below a depth of 4244 ft that host the major deep permeable fracture encountered. The maximum static temperature deep in LCSH-5 is 323 oF and the maximum flowing temperature is 329 oF. This hole extended the known length of the geothermal system by of a mile toward the north and is located over mile north of the northernmost hot spring. The OH-1 hole was briefly flow tested prior to cementing the NQ rods in place. This flow test confirmed the zone at 947 ft is the dominant permeability in the hole. The waters produced during testing of OH-1 and LCSH-5 are generally intermediate in character between the deep geothermal water produced by the Phipps #2 well and the thermal springs. Geothermometers applied to deeper fluids tend to predict higher subsurface temperatures with the maximum being 382 oF from the Phipps #2 well. The Lake City geothermal system can be viewed as having shallow (elevation > 4000 ft and temperatures of 270 to 310 oF), intermediate (elevation 2800 to 3700 ft and temperatures 270 to 320 oF ) and deep (elevations < 1000 ft and temperatures 323 to 337 oF) components. In the south part of the field, near Phipps #2 the shallow and deep components are present. In the central part of the field, near OH-1 the shallow and intermediate components are present and presumably the deep component is also present. In the north part of the field, the intermediate and deep components are present. Most or all of the fractures in the core have dips between 45 degrees and vertical and no strong stratigraphic control on the resource has yet been demonstrated. Conceptually, the Lake City geothermal resource seems to be located along the north-south trending range front in a relatively wide zone of fractured rock. The individual fractures do not seem to be associated with any readily identifiable fault. In fact, no major hydraulically conductive faults were identified by the core drilling.

Dick Benoit; David Blackwell; Joe Moore; Colin Goranson

2005-10-27T23:59:59.000Z

447

Assessment of the Geothermal Development of Mexico  

DOE Green Energy (OSTI)

Mexico, with a 60 million population has an extension of almost 2 million square kilometers. A large number of volcanoes and hydrothermal manifestations are found in the area, particularly along the Pacific Coast. The electricity needs of this country require its installed capacity to be doubled every eight-and-a-half years. Although its main energy source is the hydrocarbons, new sources of energy are being investigated and developed. In 1973, at Cerro Prieto, a 75 MW plant was inaugurated utilizing geothermal steam, initiating in this way commercial exploitation of this energy. From there on an uninterrupted program of exploration and development has been followed, along and across the country. Probably the region with the highest potential of geothermal energy is the New-volcanic Belt, a zone 300 kilometers wide which crosses the country from the Pacific Coast to the Gulf of Mexico Coast. In this zone, the geothermal fields of Los Azufres, Los Negritos, Ixtlan de los Hervores, La Primavera and San Marcos are located. Sixteen wells have been drilled at Los Azufres, 14 good producers with an average temperature of 275 C. An area of 385 square kilometers is estimated can be exploited for steam production. By 1981, it is expected to have four wellhead turbogenerators rated 6 MW each. Two geothermal wells are now being drilled at La Primavera, with very good results. Temperatures of 275 C have been found at a depth of 800 m in the first well of the Rio Caliente module. The first two wells are now being drilled at Los Humeros geothermal zone. To date, 80 wells have been drilled at Cerro Prieto. In the last group of wells the producing stratum was found at a depth between 2000 and 3000 m. The temperature of this stratum is about 340 C, and each well has an average output of 200 tons per hour. Research is now being conducted to solve the problems encountered of casing corrosion, and for the development of better cementing materials and improved cementing techniques, since the results obtained have not been entirely satisfactory, being the life of the geothermal wells shortened, increasing the cost of power generation. Since its inauguration in 1973, Cerro Prieto has been generating electricity continuously, with increasing annual plant factors, better than 90 percent in the last three years. As of this date, the installed capacity at Cerro Prieto is 150 MW. The installation of a fifth unit of 30 MW is now underway. This unit will utilize low pressure steam flashed from the separated water, now being discarded from units 1 to 4. A flashing plant is currently being installed for this purpose. This means a 20 percent increase without drilling more wells. Future plans are the construction of two more plants of 200 MW each, for a total of 620 MW for May 1983. These units will be operating at slightly higher pressures than the existing ones. It is estimated that a total capacity of 40,000 MW could be installed by the year 2000, using steam obtained from the known geothermal areas of Mexico.

Dominguez, B.; Bermejo, F.; Guiza, J.

1980-12-01T23:59:59.000Z