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1

Ar geochronology of magmatic activity, magma ux and hazards at Ruapehu volcano, Taupo Volcanic Zone,  

E-Print Network [OSTI]

, Auckland, New Zealand e New Mexico Geochronological Research Laboratory, New Mexico Institute of Mining and Technology, Socorro, NM, USA f New Mexico Bureau of Mines and Mineral Exploration, Socorro, NM, USA Received ka includes an entire s 300-m section of lavas in Whangaehu gorge as well as some lavas in Ohinepango

Dunbar, Nelia W.

2

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

3

Validation of Innovative Exploration Technologies for Newberry Volcano: LIDAR of Newberry Volcano 2012  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Validation of Innovative Exploration Technologies for Newberry Volcano: LIDAR of Newberry Volcano 2012

Jaffe, Todd

4

Double trouble: Paired ignimbrite eruptions and collateral subsidence in the Taupo Volcanic Zone, New Zealand  

Science Journals Connector (OSTI)

...version: In this window In a new window Figure 8. Oblique aerial view looking north-northeast along the line of the Horohoro fault...Kobayashi, T., Ishihara, K., Suzuki-Kamata, K., and Fukushima, D., 2003, Sakurajima volcano and pyroclastic deposits...

D.M. Gravley; C.J.N. Wilson; G.S. Leonard; J.W. Cole

5

Chikurachki volcano (Kurile Islands, Russia)  

E-Print Network [OSTI]

Chikurachki volcano (Kurile Islands, Russia) the unique volcano with frequent basaltic plinian-Kamchatsky, Russia #12;#12;Historical eruptions of Chikurachki Year 1853-59 1958 1961 1964 1973 1986 2002 Column

Belousov, Alexander

6

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

7

Principal Types of Volcanoes | Open Energy Information  

Open Energy Info (EERE)

Volcanoes Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Principal Types of Volcanoes Abstract Abstract unavailable. Author John Watson Published U.S....

8

Monitoring gases from andesite volcanoes  

Science Journals Connector (OSTI)

...Popocatapetl volcano, Mexico. Over three days before...measuring back-scattered solar ultraviolet irradiance...observed by lunar and solar occultation spectroscopy...volcanic gas compositions by solar occultation spectroscopy...volcan Popocata- petl, Mexico, June 7 and 10, 1995...

2000-01-01T23:59:59.000Z

9

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

10

Robot to probe inside Antarctic volcano  

Science Journals Connector (OSTI)

Robot to probe inside Antarctic volcano ... The first robotic observations inside the crater of a live volcano—using a unique, eight-legged robot called Danteare slated to start next week in Antarctica. ... A team of U.S. researchers will lower the spiderlike robot into Mount Erebus (pronounced "AIR-a-bus"), a 12,447-foot-high volcano on Ross Island, about 800 miles from the South Pole. ...

RICHARD SELTZER

1992-12-21T23:59:59.000Z

11

Taupo's atypical arc  

Science Journals Connector (OSTI)

... many other continental arcs around the world, with andesite-dacite cone volcaaoes and relatively low geothermal heat fluxes. In sharp contrast, in the middle

Colin J. N. Wilson

1996-01-04T23:59:59.000Z

12

Magma chamber processes at Mutnovsky Volcano, Russia.  

E-Print Network [OSTI]

??This dissertation is composed of two manuscripts about the evolution of Mutnovsky Volcano in Kamchatka, Russia. Mutnovsky has been active for the past approximately 80,000… (more)

Robertson, Kelly L.

2011-01-01T23:59:59.000Z

13

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

14

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

15

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

16

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

17

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

18

Seismic characterization of the fall 2007 eruptive sequence at Bezymianny Volcano, Russia  

E-Print Network [OSTI]

Seismic characterization of the fall 2007 eruptive sequence at Bezymianny Volcano, Russia Weston of Geophysical Services, Russian Academy of Sciences, Petropavlosk, Russia d Cascade Volcano Observatory, United

West, Michael

19

Volcano remote sensing with ground-based spectroscopy  

Science Journals Connector (OSTI)

...background. At Popocatepetl volcano, Mexico, they observed a steady increase in SiF4...measurements of volcanic gas compositions by solar FTIR spectroscopy. Nature, 396, 567-570...eruption plume at Popocatepetl volcano, Mexico. Nature, 396, 563-567. doi:10...

2005-01-01T23:59:59.000Z

20

Lab7: Volcanoes I. --Their Geographic Distribution Introduction  

E-Print Network [OSTI]

a wide variety of hazards to humans as well as their animals and structures. The first step. Pacuritin Volcano, Mexico Active Volcanoes of the World South Sandwich Islands. Also known as the Scotia arc and 50 exhibit geothermal activity. Kuriles. Chain of volcanic islands stretching from Kamchatka

Chen, Po

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

Alaska Plans Geothermal Leasing at Volcano | Department of Energy  

Office of Environmental Management (EM)

at Volcano June 26, 2008 - 4:19pm Addthis ANCHORAGE, Alaska - In Alaska, a state rich in oil and gas, officials are seeking to stir interest in a different source of underground...

22

Newberry Volcano EGS Demonstration Stimulation Modeling  

SciTech Connect (OSTI)

As a part of Phase I of the Newberry Volcano EGS Demonstration project, several data sets were collected to characterize the rock volume around the well. Fracture, fault, stress, and seismicity data has been collected by borehole televiewer, LiDAR elevation maps, and microseismic monitoring. Well logs and cuttings from the target well (NWG 55-29) and core from a nearby core hole (USGS N-2) have been analyzed to develop geothermal, geochemical, mineralogical and strength models of the rock matrix, altered zones, and fracture fillings (see Osborn et al., this volume). These characterization data sets provide inputs to models used to plan and predict EGS reservoir creation and productivity. One model used is AltaStim, a stochastic fracture and flow software model developed by AltaRock. The software's purpose is to model and visualize EGS stimulation scenarios and provide guidance for final planning. The process of creating an AltaStim model requires synthesis of geologic observations at the well, the modeled stress conditions, and the stimulation plan. Any geomechanical model of an EGS stimulation will require many assumptions and unknowns; thus, the model developed here should not be considered a definitive prediction, but a plausible outcome given reasonable assumptions. AltaStim is a tool for understanding the effect of known constraints, assumptions, and conceptual models on plausible outcomes.

Trenton T. Cladouhos, Matthew Clyne, Maisie Nichols,; Susan Petty, William L. Osborn, Laura Nofziger

2011-10-23T23:59:59.000Z

23

The effect of edifice load on magma ascent beneath a volcano  

Science Journals Connector (OSTI)

...2000) The e ect of edi ce load on magma ascent beneath a volcano...May. Petrological and isotopic data also indicate magma arrest at...2000) The e ect of edi ce load on magma ascent beneath a volcano...2000) The e ect of edi ce load on magma ascent beneath a volcano...

2000-01-01T23:59:59.000Z

24

HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES,  

E-Print Network [OSTI]

HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES and July 1973 at Shrub and Upper Klawasi mud volcanoes 8 ii #12;HYDROTHERMAL ACTIVITY AND CARBON. Map of diffuse carbon dioxide flow from soils near the summit of Shrub mud volcano 9 TABLES 1

25

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

26

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

27

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.

28

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

29

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

30

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:

31

Validation of Innovative Exploration Technologies for Newberry Volcano: Map showing location of wells permitted, drilled and seismic test 2012  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Innovative Exploration Technologies for Newberry Volcano: Map showing location of wells permitted, drilled & seismic test, 2012

Jaffe, Todd

32

NASA maps volcano's 4000-mile-long SO2 cloud  

Science Journals Connector (OSTI)

NASA maps volcano's 4000-mile-long SO2 cloud ... The S02 was mapped on June 18 by the Total Ozone Mapping Spectrometer, an instrument aboard NASA's NIMBUS-7 satellite that has been measuring ozone levels and monitoring S02 since 1978. ...

1991-07-01T23:59:59.000Z

33

The sun, volcanoes, computers and the foundations of  

E-Print Network [OSTI]

The sun, volcanoes, computers and the foundations of palaeoclimate Steven J. Phipps Climate Change­374, 2000 #12;Climatic Change, 45, 361­374, 2000 #12;Extreme weather events of 535­536 CE · The sun was dark the Syrian · During this year [536 CE] a most dread portent took place. For the sun gave forth its light

Phipps, Steven J.

34

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

35

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"

36

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

37

Seismic Hazards at Kilauea and Mauna LOA Volcanoes, Hawaii  

SciTech Connect (OSTI)

A significant seismic hazard exists in south Hawaii from large tectonic earthquakes that can reach magnitude 8 and intensity XII. This paper quantifies the hazard by estimating the horizontal peak ground acceleration (PGA) in south Hawaii which occurs with a 90% probability of not being exceeded during exposure times from 10 to 250 years. The largest earthquakes occur beneath active, unbuttressed and mobile flanks of volcanoes in their shield building stage.

Klein, Fred W.

1994-04-22T23:59:59.000Z

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

E-Print Network 3.0 - avacha volcano kamchatka Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

calderas, large explosive craters and active volcanoes in the Kuril-Kamchatka region, Russia, Bulletin... Natural Hazards and Earth System Sciences Historical and paleo-tsunami...

40

E-Print Network 3.0 - aster volcano archive Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and mapping with data from NASA's Earth Observing System Summary: -temporal, multi-spatial data fusion capabilities of ASTER for Soufriere Hills Volcano, Montserrat. False...

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

Dynamics of carbon dioxide emissions, crystallization, and magma ascent: hypotheses, theory, and applications to volcano monitoring at Mount St. Helens  

Science Journals Connector (OSTI)

?Measurements of CO2 fluxes from open-vent volcanos are rare, yet may offer special capabilities for monitoring volcanos and forecasting activity. The measured fluxes of CO2 and SO2 from Mount St. Helens decrease...

David M. Harris; William I. Rose

1996-09-01T23:59:59.000Z

42

Validation of Innovative Exploration Technologies for Newberry Volcano: Seismic data - raw taken by Apex Hipoint for 1st test 2012  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Validation of Innovative Exploration Technologies for Newberry Volcano: Seismic data - raw taken by Apex Hipoint for 1st test 2012

Jaffe, Todd

43

Validation of Innovative Exploration Technologies for Newberry Volcano: Raw data used to prepare the Gravity Report by Zonge 2012  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Validation of Innovative Exploration Technologies for Newberry Volcano: Raw data used to prepare the Gravity Report by Zonge 2012

Jaffe, Todd

44

Project EARTH-13-TM1: Understanding CO2 emissions from Europe's restless caldera-forming volcanoes  

E-Print Network [OSTI]

Project EARTH-13-TM1: Understanding CO2 emissions from Europe's restless caldera-forming volcanoes the information contained in volcano CO2 emissions is important from both a volcanic hazards perspective into this program. The opportunity will also be taken to map out CO2 emissions at these systems and to review what

Henderson, Gideon

45

Submarine venting of liquid carbon dioxide on a Mariana Arc volcano  

E-Print Network [OSTI]

Submarine venting of liquid carbon dioxide on a Mariana Arc volcano John Lupton NOAA/Pacific Marine hydrothermal fluids, it is rarely found in the form of CO2 liquid. Here we report the discovery of an unusual CO2-rich hydrothermal system at 1600-m depth near the summit of NW Eifuku, a small submarine volcano

Chadwick, Bill

46

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.

47

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.

48

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

49

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

50

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

51

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) ~

52

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

53

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

54

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

55

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.

56

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

57

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

Broader source: Energy.gov (indexed) [DOE]

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

58

Ensemble Modeling of Air Pollution Due to April 2010 Island Volcano Eruption  

Science Journals Connector (OSTI)

The eruption of Island volcano in April 2010 caused enormously big troubles for air transport over Europe for a long period of time. The losses and inconveniences for air companies, common business and usual pass...

Dimiter Syrakov; Maria Prodanova…

2014-01-01T23:59:59.000Z

59

FREQUENT BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO, KURILE ISLANDS, RUSSIA  

E-Print Network [OSTI]

FREQUENT BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO, KURILE ISLANDS, RUSSIA, Petropavlovsk- Kamchatsky, Russia; belousov@mail.ru. (2) - GEOMAR, Kiel, Germany. Chikurachki is a young, active

Belousov, Alexander

60

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

Open Energy Info (EERE)

History Of The East Rift Zone Of Kilauea Volcano, Hawaii Based On Drill Core From SOH 1 Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Magmatic...

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

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

Open Energy Info (EERE)

data show that the volcanic edifice of Izu-Oshima Volcano has a mean magnetization intensity ranging from 10.4 to 12.1 Am. The derived 3D magnetic structure shows low...

62

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

63

The geological and geochemical study of the mud volcanoes of Azerbaijan  

SciTech Connect (OSTI)

Azerbaijan is a classic region for the study of mud volcanism. Of the 700 mud volcanoes known in the world, 220 are in Azerbaijan. These are of great interest, not least in relation to oil and gas exploration since they give information on subsurface sediments beyond the reach of drilling. Mud volcanoes are clearly visible on satellite images. They are confined to structural lineaments and associated fractures. Changes in the morphology of some mud volcanoes post-eruption can be detected from a series of images pre-dating and post-dating eruptions. Mud volcanoes are notable for gradients of temperature that are by an order of magnitude or a factor of 102 greater than the temperature gradients established elsewhere. The gases of mud volcanoes consist mainly of methane (95-100%). There are small amounts of C{sub 2-6}, CO{sub 2}, N{sub 2}, He and Ar. The isotopic composition of carbon (ICC) within the methane varies from -61.29. to -35.W{close_quotes} which is isotopically heavier than the methane from producing fields. The ICC of the CO{sub 2} has a very wide range (from -49.6% to +23.1%), indicating several sources of its formation. The isotopically superheavy CO{sub 2} (+5%) is especially interesting. Oils from mud volcanoes are typically severely biodegraded. Their ICC ranges from -24.76% to -28.2%. A relationship between {partial_derivative}{sup l3}C of oils and ages of accumulations has been established. Waters of mud volcanoes are lightly mineralised, containing chiefly bicarbonates and sodium. The hydrogen composition of the water is abnormally heavy. Ejected rocks from mud volcanoes range in age from Cretaceous - Pliocene. Their study suggests that deeply buried reservoirs maintain good poroperm characteristics because of relatively little catagenesis.

Guliyev, I.A.; Aliyev, A.A.; Rahmanov, R.R. [Geological Institute of the Azerbaijan academy of sciences (GIA), Baku (Azerbaijan)] [and others

1995-08-01T23:59:59.000Z

64

Self-potential distribution on active volcano controlled by three-dimensional resistivity structure in Izu-Oshima, Japan  

Science Journals Connector (OSTI)

......used to calculate the electric potential distribution...Ueda A., 1993. Discharge model of fumarolic gases...2003. The volcano-electric effect, J. geophys...by high-resolution electric resistivity tomography...volcano, Izu-Bonin arc, Japan: a preliminary......

Shin'ya Onizawa; Nobuo Matsushima; Tsuneo Ishido; Hideaki Hase; Shinichi Takakura; Yuji Nishi

2009-08-01T23:59:59.000Z

65

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

66

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

67

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.

68

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

E-Print Network [OSTI]

, and the paleo-Amu Darya supplied sediment from the Pamirs to the east. Relatively minor sediment input came from other river systems, such as paleo-Kura and paleo-Sumgaiet. These rivers fed a series of lowstand lacustrine deltas. There are two distinctive... volcano formation begins in the Middle Miocene and becomes more intensive in the Pliocene. ? Roots of many mud volcanoes onshore are Lower Cretaceous and Jurassic. The samples of these rocks have bitumen content from 0.469% up to 2.5%. ? Gases of mud...

Yusifov, Mehdi Zahid

2005-11-01T23:59:59.000Z

69

Applicability of InSAR to tropical volcanoes: insights from Central AmericaQ1  

E-Print Network [OSTI]

volcanoes: insights from Central AmericaQ1 S. K. EBMEIER1*, J. BIGGS2,3, T. A. MATHER1 & F. AMELUNG3 1 COMET+, Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK 2 COMET+, Department rapid in southern Central America where Evergreen broad- leaf vegetation dominates. Land

Biggs, Juliet

70

The 1995–1998 eruption of the Soufriére Hills volcano, Montserrat, WI  

Science Journals Connector (OSTI)

...fan (400 m east{west by 1 km north{south...of the Tar River valley. The removal of...the Bel- ham River valley to the west of the volcano...top of the Gages valley, where ow activity...g) Major ows to west and southwest and...

2000-01-01T23:59:59.000Z

71

Air-dropped sensor network for real-time high-fidelity volcano monitoring  

Science Journals Connector (OSTI)

This paper presents the design and deployment experience of an air-dropped wireless sensor network for volcano hazard monitoring. The deployment of five stations into the rugged crater of Mount St. Helens only took one hour with a helicopter. The stations ... Keywords: design and deployment, sensor network

Wen-Zhan Song; Renjie Huang; Mingsen Xu; Andy Ma; Behrooz Shirazi; Richard LaHusen

2009-06-01T23:59:59.000Z

72

Lithosphere—atmosphere—ionosphere coupling after the 2003 explosive eruption of the Soufriere Hills Volcano, Montserrat  

Science Journals Connector (OSTI)

......solid Earth around 4 mHz. Numerical approximations...analysis|Ionosphere/atmosphere interactions|Volcano...frequency domain (2.2 mHz) and identified...and the ionospheric plasma and can be described...peak centered at 4 mHz, and an apparent...previously reported after atmospheric explosions from ionospheric......

Thomas Dautermann; Eric Calais; Philippe Lognonné; Glen S. Mattioli

2009-12-01T23:59:59.000Z

73

Process and Results of Hydrology in Long Valley Volcanoes of the Eastern Sierra Nevada Course  

E-Print Network [OSTI]

Process and Results of Hydrology in Long Valley Volcanoes of the Eastern Sierra Nevada Course Leigh of the Sierra Nevada Mountain Range, and specifically the Long Valley. In fact, many of the physical and chemical properties of the landforms in the Long Valley Caldera are the result of hydrothermal systems

Polly, David

74

FESD Proposal, Type I VOICE: Volcano, Ocean, Ice, and Carbon Experiments  

E-Print Network [OSTI]

in continental ice volume and sea level produce changes in pressure and stress within the crust and mantleFESD Proposal, Type I VOICE: Volcano, Ocean, Ice, and Carbon Experiments Project Manager: Charles during Pleistocene ice ages. We posit that changes in sea level and ice volume drive changes in volcanism

Huybers, Peter

75

Radiant flux from Earth's subaerially erupting volcanoes R. WRIGHT* and E. PILGER  

E-Print Network [OSTI]

Radiant flux from Earth's subaerially erupting volcanoes R. WRIGHT* and E. PILGER Hawaii Institute have been used to estimate lava effusion rates (Harris et al. 1997a, Wright et al. 2001), constrain lava flow thermal budgets (Pieri et al. 1990, Wright et al. 2000), deduce the explosive potential

Wright, Robert

76

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

77

Validation of Innovative Exploration Technologies for Newberry Volcano: Geochemistry data from 55-29 and 46-16 wells at Newberry 2012  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Validation of Innovative Exploration Technologies for Newberry Volcano: Geochemistry data from 55-29 and 46-16 wells at Newberry 2012

Jaffe, Todd

78

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

SciTech Connect (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

79

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

SciTech Connect (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

80

Reply to comment on "Electrical Tomography of La Soufrire of Guadeloupe Volcano: Field experiments, 1D inversion and  

E-Print Network [OSTI]

Discussion Reply to comment on "Electrical Tomography of La Soufrière of Guadeloupe Volcano: Field.25.Qi; 91.35.Pn; 91.40.-k; 93.30.Vs 1. Introduction We thank Linde and Revil for their comment [1 and discuss our approach for interpreting electrical resistivity data acquired over complex geological

Beauducel, François

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.


81

Isotope and chemical composition of gases from mud volcanoes in the Taman Peninsula and problem of their genesis  

Science Journals Connector (OSTI)

Variations in the carbon isotope composition in gases and waters of mud volcanoes in the Taman Peninsula are studied. The ?13C values in CH4 and CO2 vary from ?59.5 to ?44.0‰ (?13Cav = ?52.4 ± 5.4‰) and from ?17....

O. E. Kikvadze; V. Yu. Lavrushin; B. G. Pokrovskii…

2014-11-01T23:59:59.000Z

82

Water content of 1997 vulcanian pumices at Soufriere Hills Volcano (Montserrat) and implications on pre-eruptive conduit conditions  

E-Print Network [OSTI]

Water content of 1997 vulcanian pumices at Soufriere Hills Volcano (Montserrat) and implications of the eruptive products. We used quantitative analysis of water content in residual glasses (matrix glass. To better link water content to structural level, we performed new water solubility experiments at low

Paris-Sud XI, Université de

83

Supporting Sound Management of Our Coasts and Seas Kasatochi Volcano Alaska is noteworthy as a region of frequent seismic and  

E-Print Network [OSTI]

as a region of frequent seismic and volcanic activity. The region contains 52 historically active volcanoes of the U.S. Fish and Wildlife Service, Alaska Maritime National Wildlife Refuge (AMNWR); therefore which long-term comparisons will be made. The teams were supported in the field by the U.S. Fish

84

Co-eruptive subsidence at Galeras identified during an InSAR survey of Colombian volcanoes (20062009)  

E-Print Network [OSTI]

Co-eruptive subsidence at Galeras identified during an InSAR survey of Colombian volcanoes (2006 and Atmospheric Sciences, University of Miami, Miami, FL 33149, USA d Colombian Institute of Geology and Mining (INGEOMINAS), Bogotá DC, Colombia e Colombian Institute of Geology and Mining (INGEOMINAS), Pasto, Colombia

Biggs, Juliet

85

Explosive basaltic volcanism of the Chikurachki Volcano (Kurile arc, Russia): Insights on pre-eruptive magmatic conditions  

E-Print Network [OSTI]

Explosive basaltic volcanism of the Chikurachki Volcano (Kurile arc, Russia): Insights on pre-Sakhalinsk, Russia d Institute of Volcanic Geology and Geochemistry, 683006 Petropavlovsk-Kamchatsky, Russia e Vernadsky Institute of Geochemistry and Analytical Chemistry, 117975 Moscow, Russia Received 13 December

Belousov, Alexander

86

Exploring links between physical and probabilistic models of volcanic eruptions: The Soufrie`re Hills Volcano, Montserrat  

E-Print Network [OSTI]

] Probabilistic methods play an increasingly important role in volcanic hazards forecasts. Here we show stiffening and gas exsolution, and depressurization due to development of permeability and gas escape. Our experience with the Soufrie`re Hills Volcano eruption sequence suggests that volcanic eruption forecasts

Connor, Charles

87

Source of the great A.D. 1257 mystery eruption unveiled, Samalas volcano, Rinjani Volcanic Complex, Indonesia  

Science Journals Connector (OSTI)

...volume of the mapped deposit, as well as an estimation (by extrapolation to...history of El Chichon Volcano, Mexico . Geofis Int 48 ( 1 ): 97...volcanics as a heat sources of geothermal prospects fron eastern Lombok...includes counting uncertainty as well as the scatter of standards and...

Franck Lavigne; Jean-Philippe Degeai; Jean-Christophe Komorowski; Sébastien Guillet; Vincent Robert; Pierre Lahitte; Clive Oppenheimer; Markus Stoffel; Céline M. Vidal; Surono; Indyo Pratomo; Patrick Wassmer; Irka Hajdas; Danang Sri Hadmoko; Edouard de Belizal

2013-01-01T23:59:59.000Z

88

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

89

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

SciTech Connect (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

90

Predicting and validating the tracking of a Volcanic Ash Cloud during the 2006 Eruption of Mt. Augustine Volcano  

SciTech Connect (OSTI)

On 11 January 2006, Mount Augustine volcano in southern Alaska began erupting after 20-year repose. The Anchorage Forecast Office of the National Weather Service (NWS) issued an advisory on 28 January for Kodiak City. On 31 January, Alaska Airlines cancelled all flights to and from Anchorage after multiple advisories from the NWS for Anchorage and the surrounding region. The Alaska Volcano Observatory (AVO) had reported the onset of the continuous eruption. AVO monitors the approximately 100 active volcanoes in the Northern Pacific. Ash clouds from these volcanoes can cause serious damage to an aircraft and pose a serious threat to the local communities, and to transcontinental air traffic throughout the Arctic and sub-Arctic region. Within AVO, a dispersion model has been developed to track the dispersion of volcanic ash clouds. The model, Puff, was used operational by AVO during the Augustine eruptive period. Here, we examine the dispersion of a volcanic ash cloud from Mount Augustine across Alaska from 29 January through the 2 February 2006. We present the synoptic meteorology, the Puff predictions, and measurements from aerosol samplers, laser radar (or lidar) systems, and satellites. UAF aerosol samplers revealed the presence of volcanic aerosols at the surface at sites where Puff predicted the ash clouds movement. Remote sensing satellite data showed the development of the ash cloud in close proximity to the volcano and a sulfur-dioxide cloud further from the volcano consistent with the Puff predictions. Lidars showed the presence of volcanic aerosol with consistent characteristics aloft over Alaska and were capable of detecting the aerosol, even in the presence of scattered clouds and where the cloud is too thin/disperse to be detected by remote sensing satellite data. The lidar measurements revealed the different trajectories of ash consistent with the Puff predictions. Dispersion models provide a forecast of volcanic ash cloud movement that might be undetectable by any other means but are still a significant hazard. Validation is the key to assessing the accuracy of any future predictions. The study highlights the use of multiple and complementary observations used in detecting the trajectory ash cloud, both at the surface and aloft within the atmosphere.

Webley, Peter W.; Atkinson, D.; Collins, Richard L.; Dean, K.; Fochesatto, J.; Sassen, Kenneth; Cahill, Catherine F.; Prata, A.; Flynn, Connor J.; Mizutani, K.

2008-11-01T23:59:59.000Z

91

Infrared observations of eclipses of Io, its thermophysical parameters, and the thermal radiation of the Loki volcano and environs  

SciTech Connect (OSTI)

Observations of Io during eclipses by Jupiter in 1981-1984 are reported. Data obtained at 3.45-30 microns using bolometer system No. 1 on the 3-m IRTF telescope at Mauna Kea are presented in extensive tables and graphs and analyzed by means of least-squares fitting of thermophysical models to the eclipse cooling and heating curves, thermal-radiation calculations for the Io volcanoes, and comparison with Voyager data. Best fits are obtained for a model comprising (1) a bright region with a vertically inhomogeneous surface and (2) a dark vertically homogeneous region with thermal inertia only about 0.1 times that of (1). Little evidence of volcanic-flux variability during the period is found, and the majority (but not all) of the excess thermal IR radiation in the sub-Jovian hemisphere is attributed to the Loki volcano and its lava lake. 35 references.

Sinton, W.M.; Kaminski, C.

1988-08-01T23:59:59.000Z

92

Terr. Atmos. Ocean. Sci., Vol. 17, No. 4, 703-722, December 2006 Distribution of Gassy Sediments and Mud Volcanoes Offshore  

E-Print Network [OSTI]

Sediments and Mud Volcanoes Offshore Southwestern Taiwan Jui-Kun Chiu 1 , Wei-Hao Tseng 1 , and Char@ntu.edu.tw This study presents the results from recent intense marine geophysical surveys conducted offshore: offshore Kaohsiung, adjacent to the Kaoping Submarine Canyon, near the head of the Fangliao Submarine

Lin, Andrew Tien-Shun

93

Coupled Thermal-Hydrological-Mechanical-Chemical Model And Experiments For Optimization Of Enhanced Geothermal System Development And Production: Evaluation of Stimulation at the Newberry Volcano EGS Demonstration Site  

Broader source: Energy.gov [DOE]

Coupled Thermal-Hydrological-Mechanical-Chemical Model And Experiments For Optimization Of Enhanced Geothermal System Development And Production: Evaluation of Stimulation at the Newberry Volcano EGS Demonstration Site through Natural Isotopic Reactive Tracers and Geochemical Investigation presentation at the April 2013 peer review meeting held in Denver, Colorado.

94

Analytical modeling of gravity changes and crustal deformation at volcanoes: The Long Valley caldera, California, case study  

Science Journals Connector (OSTI)

Joint measurements of ground deformation and micro-gravity changes are an indispensable component for any volcano monitoring strategy. A number of analytical mathematical models are available in the literature that can be used to fit geodetic data and infer source location, depth and density. Bootstrap statistical methods allow estimations of the range of the inferred parameters. Although analytical models often assume that the crust is elastic, homogenous and isotropic, they can take into account different source geometries, the influence of topography, and gravity background noise. The careful use of analytical models, together with high quality data sets, can produce valuable insights into the nature of the deformation/gravity source. Here we present a review of various modeling methods, and use the historical unrest at Long Valley caldera (California) from 1982 to 1999 to illustrate the practical application of analytical modeling and bootstrap to constrain the source of unrest. A key question is whether the unrest at Long Valley since the late 1970s can be explained without calling upon an intrusion of magma. The answer, apparently, is no. Our modeling indicates that the inflation source is a slightly tilted prolate ellipsoid (dip angle between 91° and 105°) at a depth of 6.5 to 7.9 km beneath the caldera resurgent dome with an aspect ratio between 0.44 and 0.60, a volume change from 0.161 to 0.173 km3 and a density of 1241 to 2093 kg/m3. The larger uncertainty of the density estimate reflects the higher noise of gravity measurements. These results are consistent with the intrusion of silicic magma with a significant amount of volatiles beneath the caldera resurgent dome.

M. Battaglia; D.P. Hill

2009-01-01T23:59:59.000Z

95

Volcanoes in Virginia!  

SciTech Connect (OSTI)

The recent earthquake may have you wondering what other surprises Virginia's geology may hold. Could there be a volcanic eruption in Virginia? Probably not today, but during the Eocene, about 35-48 million years ago, a number of mysterious eruptions occurred in western Virginia. This talk investigates the possible origins of these eruptions, and what they can tell us about the crust and mantle underneath Virginia.

Johnson, Elizabeth Baedke [James Madison University

2012-01-24T23:59:59.000Z

96

Newberry Volcano EGS Demonstration  

Broader source: Energy.gov (indexed) [DOE]

modeling of commercial-scale EGS wellfield and power plant Primary Goals * Create EGS fracture network around existing borehole * Drill two production wells into mapped fracture...

97

Volcanoes in Virginia!  

ScienceCinema (OSTI)

The recent earthquake may have you wondering what other surprises Virginia's geology may hold. Could there be a volcanic eruption in Virginia? Probably not today, but during the Eocene, about 35-48 million years ago, a number of mysterious eruptions occurred in western Virginia. This talk investigates the possible origins of these eruptions, and what they can tell us about the crust and mantle underneath Virginia.

Johnson, Elizabeth Baedke [James Madison University

2014-06-25T23:59:59.000Z

98

Combined U-Th/He and 40Ar/39Ar geochronology of post-shield lavas from the Mauna Kea and Kohala volcanoes, Hawaii  

SciTech Connect (OSTI)

Late Quaternary, post-shield lavas from the Mauna Kea and Kohala volcanoes on the Big Island of Hawaii have been dated using the {sup 40}Ar/{sup 39}Ar and U-Th/He methods. The objective of the study is to compare the recently demonstrated U-Th/He age method, which uses basaltic olivine phenocrysts, with {sup 40}Ar/{sup 39}Ar ages measured on groundmass from the same samples. As a corollary, the age data also increase the precision of the chronology of volcanism on the Big Island. For the U-Th/He ages, U, Th and He concentrations and isotopes were measured to account for U-series disequilibrium and initial He. Single analyses U-Th/He ages for Hamakua lavas from Mauna Kea are 87 {+-} 40 ka to 119 {+-} 23 ka (2{sigma} uncertainties), which are in general equal to or younger than {sup 40}Ar/{sup 39}Ar ages. Basalt from the Polulu sequence on Kohala gives a U-Th/He age of 354 {+-} 54 ka and a {sup 40}Ar/{sup 39}Ar age of 450 {+-} 40 ka. All of the U-Th/He ages, and all but one spurious {sup 40}Ar/{sup 39}Ar ages conform to the previously proposed stratigraphy and published {sup 14}C and K-Ar ages. The ages also compare favorably to U-Th whole rock-olivine ages calculated from {sup 238}U - {sup 230}Th disequilibria. The U-Th/He and {sup 40}Ar/{sup 39}Ar results agree best where there is a relatively large amount of radiogenic {sup 40}Ar (>10%), and where the {sup 40}Ar/{sup 36}Ar intercept calculated from the Ar isochron diagram is close to the atmospheric value. In two cases, it is not clear why U-Th/He and {sup 40}Ar/{sup 39}Ar ages do not agree within uncertainty. U-Th/He and {sup 40}Ar/{sup 39}Ar results diverge the most on a low-K transitional tholeiitic basalt with abundant olivine. For the most alkalic basalts with negligible olivine phenocrysts, U-Th/He ages were unattainable while {sup 40}Ar/{sup 39}Ar results provide good precision even on ages as low as 19 {+-} 4 ka. Hence, the strengths and weaknesses of the U-Th/He and {sup 40}Ar/{sup 39}Ar methods are complimentary for basalts with ages of order 100-500 ka.

Aciego, S.M.; Jourdan, F.; DePaolo, D.J.; Kennedy, B.M.; Renne, P.R.; Sims, K.W.W.

2009-10-01T23:59:59.000Z

99

PALEOMAGNETIC DATING OF THE CERRO PRIETO VOLCANO  

E-Print Network [OSTI]

geothermal areas of Imperial Valley, California, & Proc. ,geothermal f i e l d , Imperial Valley, California: Bull.t h e Salton Sea, Imperial Valley Mexicali Yalley and Gulf

Boer, Jelle De

2009-01-01T23:59:59.000Z

100

PALEOMAGNETIC DATING OF THE CERRO PRIETO VOLCANO  

E-Print Network [OSTI]

in geothermal areas of Imperial Valley, California, &Sea geothermal f i e l d , Imperial Valley, California:

Boer, Jelle De

2009-01-01T23:59:59.000Z

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.


101

Volcano on Jan Mayen Alive Again  

Science Journals Connector (OSTI)

... long fracture (Fig. 1) with five main parasitic crater centres. Geologists from the Norsk Polarinstitutt were rushed to the island and are observing the activity from land, sea ...

TORE GJELSVIK

1970-10-24T23:59:59.000Z

102

Haleakala Volcano Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Date: Well Name: Location: Depth: Initial Flow Rate: "cf" is not declared as a valid unit of measurement for this property. The given value was not understood. Flow Test...

103

PALEOMAGNETIC DATING OF THE CERRO PRIETO VOLCANO  

E-Print Network [OSTI]

OF ENERGY Division of Geothermal Energy United States of AmEnergy, Division of Geothermal Energy, *der contract W-7405-Development I of Geothermal Energy Resources, California: Q

Boer, Jelle De

2009-01-01T23:59:59.000Z

104

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...

105

E-Print Network 3.0 - acidic geothermal environments Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

fluids in New Zealand (e.g., Waiotapu, Orakeikorako... Concentrations of rare earth elements (REE) in acidic thermal waters from the Taupo ... Source: Wood, Scott A. -...

106

Transition from alkaline to calc-alkaline volcanism during evolution of the Paleoproterozoic Francevillian basin of eastern Gabon (Western Central Africa)  

Science Journals Connector (OSTI)

Abstract We report new geochemical data for the volcanic and subvolcanic rocks associated with the evolution of the Francevillian basin of eastern Gabon during Paleoproterozoic times (c. 2.1–2 Ga). Filling of this basin has proceeded through four main sedimentary or volcano-sedimentary episodes, namely FA, FB, FC and FD. Volcanism started during the FB episode being present only in the northern part of the basin (Okondja sub-basin). This volcanism is ultramafic to trachytic in composition and displays a rather constant alkaline geochemical signature. This signature is typical of a within-plate environment, consistent with the rift-setting generally postulated for the Francevillian basin during the FB period. Following FB, the FC unit is 10–20 m-thick silicic horizon (jasper) attesting for a massive input of silica in the basin. Following FC, the FD unit is a c. 200–400 m-thick volcano-sedimentary sequence including felsic tuffs and epiclastic rocks. The geochemical signatures of these rocks are totally distinct from those of the FB alkaline lavas. High Th/Ta and La/Ta ratios attest for a calc-alkaline signature and slight fractionation between heavy rare-earth suggests melting at a rather low pressure. Such characteristics are comparable to those of felsic lavas associated with the Taupo zone of New Zealand, a modern ensialic back-arc basin. Following FD, the FE detrital unit is defined only in the Okondja region, probably associated with a late-stage collapse of the northern part of the basin. It is suggested that the alkaline to calc-alkaline volcanic transition reflects the evolution of the Francevillian basin from a diverging to a converging setting, in response to the onset of converging movements in the Eburnean Belt of Central Africa.

Denis Thiéblemont; Pascal Bouton; Alain Préat; Jean-Christian Goujou; Monique Tegyey; Francis Weber; Michel Ebang Obiang; Jean Louis Joron; Michel Treuil

2014-01-01T23:59:59.000Z

107

LATE QUATERNARY GLACIATION OF THE ERCIYES VOLCANO, CENTRAL TURKEY  

E-Print Network [OSTI]

are also observed. 4. Kirkpinar Valley, situated to the west of Aksu Valley, is covered by a northwest of the Cappado- cian Volcanic Province. It is characterized by four valleys and one ridge that contain a small glacier and Late Quater- nary glacial deposits on its flanks. 1. Aksu Valley is a northwest trending U

Zreda, Marek

108

Is Mercury from Hawaiian Volcanoes a Natural Source of Pollution?  

Science Journals Connector (OSTI)

... ml. with distilled water. Portions of 20 ml. were analysed for mercury content by flameless atomic absorption at the 253.65 nm resonance line. We used a Utopia Instruments ... atomic absorption at the 253.65 nm resonance line. We used a Utopia Instruments flameless mercury analysis kit6 and a 10 cm absorption cell mounted on the burner of a ...

ALAN ESHLEMAN; SANFORD M. SIEGEL; BARBARA Z. SIEGEL

1971-10-15T23:59:59.000Z

109

Revised age for Midway volcano, Hawaiian volcanic chain  

Science Journals Connector (OSTI)

New conventional K-Ar,40Ar/39Ar, and petrochemical data on alkalic basalt pebbles from the basalt conglomerate overlying tholeiitic flows in the Midway drill hole show that Midway evolved past the tholeiitic shield-building stage and erupted lavas of the alkalic suite27.0 ± 0.6m.y. ago. The data also show that previously published conventional K-Ar ages on altered samples of tholeiite are too young by about 9 m.y. These results remove a significant anomaly in the age-distance relationships of the Hawaiian chain and obviate the need for large changes in either the rate of rotation of the Pacific plate about the Hawaiian pole or the motion of the plate relative to the Hawaiian hot spot since the time of formation of the Hawaiian-Emperor bend. All of the age data along the Hawaiian chain are now reasonably consistent with an average rate of volcanic propagation of 8.0 cm/yr and with 0.83°/m.y. of angular rotation about the Hawaiian pole.

G. Brent Dalrymple; David A. Clague; Marvin A. Lanphere

1977-01-01T23:59:59.000Z

110

14 | Coordinates November 2009 Many of the world's volcanoes that  

E-Print Network [OSTI]

of technical complexity and power consumption), precludes the exclusive need to build expensive carrier phase for enhanced risk assessment and early warning of volcanic eruptions. In architectural terms the monitoring

111

G188 Research Paper Volcano Tourism: Hazards and Mitigation  

E-Print Network [OSTI]

, is a prime area for geotourism. Geotourism is a branch of tourism stemming from ecotourism and sustainable residents." While geotourism is a relatively new form of tourism, it derives from ecotourism and sustainable

Polly, David

112

Aster Watches The World'S Volcanoes- A New Paradigm For Volcanological...  

Open Energy Info (EERE)

backward-looking visible channel telescope for stereo-photogrammetric observations. The spatial resolutions are 15 mpixel in the visible, 30 mpixel in the near-IR, and 90 m...

113

Structural stability of andesite volcanoes and lava domes  

Science Journals Connector (OSTI)

...limit equilibrium analysis (LEA) methods...high degree of reliability. The principles...quantitative stability analyses developed. It...highly uncertain reliability. By mid-May...Finite element analysis of deformation...Structural Mechanics Reactor Technology, Chicago...

2000-01-01T23:59:59.000Z

114

Structural stability of andesite volcanoes and lava domes  

Science Journals Connector (OSTI)

...is an essential tool in assisting the...modelling of volcanic systems must be very di...Slope hazards assessment diagram posted...in hydrothermal systems occupying the...frequent summit steam explosions and...of pressurized steam, suddenly released...Monitoring and Warning System The following...

2000-01-01T23:59:59.000Z

115

EGGERTJOHANNESSON/AP Iceland's Brarbunga volcano erupted on  

E-Print Network [OSTI]

-cigarette reports Electronic cigarettes need more-stringent regulations, the World Health Organization (WHO) said until there is more evidence of the devices' safety and the health risks are better understood by the Association for Assessment and Accreditation of Laboratory Animal Care (AAALAC) International violate animal

Napp, Nils

116

Short communication Observations of eruptive activity at Santiaguito volcano, Guatemala  

E-Print Network [OSTI]

, correlated with measured extrusion rates, suggest an incremental plug flow through the conduit. Bubble to changes in pressure and composition. Bubble nucleation, growth, deformation, and fragmen- tation): information about the conduit shape and size; the stability of the conduit during an eruption, and over longer

Rose, William I.

117

Argon-40: Excess in Submarine Pillow Basalts from Kilauea Volcano, Hawaii  

Science Journals Connector (OSTI)

...CHOQUETTE Denver Research Center, Marathon Oil Company, Littleton, Colorado...modification by B. J. Wigin-ton (Marathon Oil Co.) of one described by C...Pray, L. J. Walters, Jr. (Marathon Oil Company), and S. Epstein (California...

G. Brent Dalrymple; James G. Moore

1968-09-13T23:59:59.000Z

118

Cosmic-ray Muon Radiography of a Volcano Seismo Seminor at Caltech, Nov 5, 2004  

E-Print Network [OSTI]

of the high-energy cosmic-ray muons passing through a mountain. This technique is in principle, based upon) with a mean energy of a few GeV (109 eV). Such high-energy muons have been used to explore the internal. It is also known that horizontally arriving cosmic-ray muons have a strong intensity in the high energy

Heaton, Thomas H.

119

Normal vector analysis from GNSS—GPS data applied to Deception volcano surface deformation  

Science Journals Connector (OSTI)

......References Berrocoso M. , 1997. Modelos y Formalismos para el Tratamiento de Observaciones GPS. Aplicacion al Establecimiento de Redes Geodesicas y Geodinamicas en la Antartida, Boletin ROA No. 1/97, Real Instituto y Observatorio de la Armada, San Fernando......

M. Berrocoso; G. Prates; A. Fernández-Ros; A. García

2012-09-01T23:59:59.000Z

120

Lead isotopes behavior in the fumarolic environment of the Piton de la Fournaise volcano (Reunion Island)  

E-Print Network [OSTI]

significantly outside the field of lavas. The iso- topic shift is ascribed to leaching ubiquitous unradiogenic phases (e.g., sulfides) by acidic gas condensates. The similarity in Pb isotope signature between lavas isotopes resulting from volatilization and condensation processes is smaller than the precision of Pb iso

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

Signals recorded by DEMETER satellite over active volcanoes during the period 2004 August–2007 December  

Science Journals Connector (OSTI)

......field and the plasma characteristics...from dc to 3.5 MHz; 3 A Langmuir...500 and 3000 4 A plasma analyser () of...active volcanic areas, data are recorded...recorded up to 3 MHz. Anywhere else...ejecta in the atmosphere during eruptive...in the world. Large black dots: location......

Jacques Zlotnicki; Feng Li; Michel Parrot

2010-12-01T23:59:59.000Z

122

Applicability of InSAR to tropical volcanoes: insights from Central America  

E-Print Network [OSTI]

. BIGGS2,3, T. A. MATHER1 & F. AMELUNG3 1 COMET+, Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK 2 COMET+, School of Earth Sciences, University of Bristol, Wills Evergreen broadleaf vegetation dominates. Land-use classification is a better predictor of decorrelation

Amelung, Falk

123

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

E-Print Network [OSTI]

toward the southwest and west. The 1994 nuées ardentes descended mainly the Boyong valley and the Bedog facies, a conventional Merapi-type, valley-fill block-and-ash flow facies and a pyroclastic surge facies the distal block-and-ash deposit in the Boyong valley. The detachment occurred at higher elevations, likely

Paris-Sud XI, Université de

124

Fire-Fountains; the Kingdom of Hawaii, its Volcanoes, and the History of its Missions  

Science Journals Connector (OSTI)

... have formed in and around the lake, each a distinct fire-fountain, yet all flameless-only merrily flinging about the molten metal: a bouquet of rare fireworks."These ...

1883-04-05T23:59:59.000Z

125

Guest, J., Cole, P., Duncan, A. & Chester, D. 2003. Volcanoes of Southern Italy.:  

Science Journals Connector (OSTI)

...established'. Great stuff and a real eye opener to the personalities...surrounded by dense housing estates with their attendant vandalism...Valuing the Resource: the Sustainable Ap-proach', was introduced...in Somerset has remained a sustainable resource despite two centuries...

Ralf Gertisser

126

Sulfur Degassing From Volcanoes: Source Conditions, Surveillance, Plume Chemistry and Earth System Impacts  

Science Journals Connector (OSTI)

...would therefore release 4-5 Gt of...especially energetic fire fountains and...substantial fraction of the released...ground-based or airborne ultraviolet...spontaneous releases of SO2 to the...substantial fractions of the total...Pinatubo. In: Fire and mud: eruptions...quantification of gas release during weak...

Clive Oppenheimer; Bruno Scaillet; Robert S. Martin

127

Thermodynamic stability and activity volcano for perovskite-based oxide as OER catalyst  

E-Print Network [OSTI]

Design of efficient and cost-effective catalysts for the oxygen evolution reaction (OER) is crucial for the development of electrochemical conversion technologies. Recent experiments show that perovskite transition-metal ...

Rong, Xi, S.M. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

128

Crater Lake Temperature Changes of the 2005 Eruption of Santa Ana Volcano, El Salvador, Central America  

E-Print Network [OSTI]

to explain the increase in lake temperature based on energy/mass balance calculations. Key words: Santa Ana

Royer, Dana

129

3D imaging of volcano gravitational deformation by computerized X-ray micro-tomography  

Science Journals Connector (OSTI)

...also run with a 10:1 mix of the same sand with plaster (50 mum). This plaster has a higher coefficient of internal friction...using a fine, low-cohesion quartz sand and plaster mix. The cone is originally 7.2 cm in diameter...

M. Kervyn; M.N. Boone; B. van Wyk de Vries; E. Lebas; V. Cnudde; K. Fontijn; P. Jacobs

130

Signals recorded by DEMETER satellite over active volcanoes during the period 2004 August–2007 December  

Science Journals Connector (OSTI)

......extents from 20 Hz to 20 kHz; 2 A three-components...lies from dc to 3.5 MHz; 3 A Langmuir probe...between 500 and 3000 4 A plasma analyser () of the...waveforms, up to 20 kHz, are saved. For...are recorded up to 3 MHz. Anywhere else...ashes ejecta in the atmosphere during eruptive events......

Jacques Zlotnicki; Feng Li; Michel Parrot

2010-12-01T23:59:59.000Z

131

Stratigraphy of small shield volcanoes on Venus: Criteria for determining stratigraphic relationships and assessment of relative  

E-Print Network [OSTI]

than about 20 km, are common and sometimes very abundant features on the plains of Venus. Typically plains of Venus. Did the eruption style of small shields occur repeatedly throughout the visible part plains with wrinkle ridges. Fifteen fields ($11%) appear to be synchronous with regional plains

Head III, James William

132

E-Print Network 3.0 - albani volcano roman Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

as the Romans of the Empire saw it, but also in its... , and pontifices, that is, as kings and priests, men of religion as well as reason, because the first Romans firmly... |...

133

E-Print Network 3.0 - acid volcano-plutonic rocks Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the first of a long string of bad jokes, and start looking at rocks. Get yer hiking boots ready. Purpose... will be placed on the field relationships of the various rock units...

134

Scattering behaviour at Merapi volcano (Java) revealed from an active seismic experiment  

Science Journals Connector (OSTI)

......Each source consists of a rectangular water basin of 2m4m cross section and 4.5m...equipment by the Geophysical Instrument Pool, Potsdam (GIPP). We used the free...coda wave excitation based on the energy conservation law, Phys. Earth planet. Inter, 67......

Ulrich Wegler; Birger G. Lühr

2001-06-01T23:59:59.000Z

135

The effect of edifice load on magma ascent beneath a volcano  

Science Journals Connector (OSTI)

...mass and R the perfect gas constant. Finally...the vertical pro les of gas content and density. The gas phase acts to decrease...remains within the range of natural magmas, which demonstrates...Crater Lake caldera, Cascade Range, U.S.A. J...

2000-01-01T23:59:59.000Z

136

Imaging magma storage below Teide volcano (Tenerife) using scattered seismic wavefields  

Science Journals Connector (OSTI)

......profiles. The frequency content of the...However, the energy is mainly concentrated...as the highest frequencies are highly attenuated...relevant instrument response. Two receiver...9 Beam power response of the noise...highly scattered energy. A 2-D median...Possible magmatic storage The presence......

L. De Barros; F. Martini; C. J. Bean; A. Garcia-Yeguas; J. Ibáñez

2012-11-01T23:59:59.000Z

137

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

E-Print Network [OSTI]

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...

Lamarche, Amy J.

2004-09-30T23:59:59.000Z

138

Sulfur Degassing From Volcanoes: Source Conditions, Surveillance, Plume Chemistry and Earth System Impacts  

E-Print Network [OSTI]

of sulfur in magmas owes much to its multiple valence states (-II, 0, IV, VI), speciation (e.g., S2, H2S, SO on the redox chemistry of sulfur: by reducing sulfur, thiosulfate, sulfite and sulfate to H2S, or oxidizing sulfur and H2S to sulfate (e.g., Takano et al. 1997; Amend and Shock 2001; Shock et al. 2010

Boyer, Edmond

139

Transient volcano deformation sources imaged with interferometric synthetic aperture radar: Application to Seguam Island, Alaska  

E-Print Network [OSTI]

of the InSAR data, reveals a relatively simple system of interrelated predictable processes driven by magma data accounts for the transient, interrelated behavior of the source clusters and the observed to infer subsurface processes that cannot be directly observed. Mechanical modeling, con- strained

140

On the time–scales of magmatism at island–arc volcanoes  

Science Journals Connector (OSTI)

...absent. Numerous studies in the Cascades, Tonga and Vanuatu have consistently...shallow mantle melting under the Cascades volcanoc arc. Geology 29...Vergniolle, S. 1989 Pressure, gas content and eruption periodicity...high-pressure experiments and natural rocks. J. Volcanol. Geotherm...

2002-01-01T23:59:59.000Z

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.


141

Late Holocene stratigraphy of the Tetimpa archaeological sites, northeast flank of Popocatépetl volcano, central Mexico  

Science Journals Connector (OSTI)

...population growth for the pre-Hispanic city of Cholula (Mountjoy...During both periods, pre-Hispanic occupation sites in the Tetimpa...1973, Man and land in pre- Hispanic Cholula: Nashville, Tennessee...G., 1998, Preclassic household pat- terns preserved under...

142

Fault location by radon and mercury detection at an active volcano in Nicaragua  

Science Journals Connector (OSTI)

... Radon was detected using a sensitive film enclosed in Track Etch Detector Cups which were buried ... -30 days. Analyses of the tracks on the film were performed by the manufacturer. Radon is reported as tracks per mm2 per 30 days (0.91 tracks per mm2 ...

William B. Crenshaw; Stanley N. Williams; Richard E. Stoiber

1982-11-25T23:59:59.000Z

143

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...

Heggie, Travis Wade

2006-04-12T23:59:59.000Z

144

Imaging magma storage below Teide volcano (Tenerife) using scattered seismic wavefields  

Science Journals Connector (OSTI)

......actually produces scattered energy. It is consequently...expensive computational costs. Figure 4 Results of...with highly scattered energy. The dashed line indicates...at: http://www.energy.ca.gov/sitingcases...Microearthquakes at the Rotokawa Geothermal Field, New Zealand......

L. De Barros; F. Martini; C. J. Bean; A. Garcia-Yeguas; J. Ibáñez

2012-11-01T23:59:59.000Z

145

SO2 emissions to the atmosphere from active volcanoes in Guatemala and El Salvador, 19992002  

E-Print Network [OSTI]

Mexico, Albuquerque, NM 87131, United States Received 17 July 2003; accepted 28 July 2004 Abstract Ground: larodrig@mtu.edu (L.A. Rodri´guez). Journal of Volcanology and Geothermal Research 138 (2004) 325­344 www damage to the local environ- ment and the population's health, as well as perturb the climate

Rose, William I.

146

Magmatic Longevity of Laacher SeeVolcano (Eifel, Germany) Indicated by U^Th Dating of  

E-Print Network [OSTI]

RESOURCES, ETH ZU« RICH, CLAUSIUSSTRASSE 25, 8092 ZU« RICH, SWITZERLAND 4 DEPARTMENT OF GEOLOGY, UNIVERSITY OF CALIFORNIA DAVIS, ONE SHIELDS AVENUE, DAVIS, CA 95616-8605, USA 5 DEPARTMENT OF GEOLOGY AND GEOGRAPHY, AUBURN PUBLICATION APRIL 16, 2010 Uranium-series dating of carbonatitic ejecta clasts constrains the crystallization

147

E-Print Network 3.0 - anorogenic acid volcano-plutonic Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Chimie des Failles Collection: Geosciences 24 Precambrian Research 148 (2006) 125144 The uranium mineralization potential of the Paleoproterozoic Summary: that the Lake Superior...

148

Research Paper Eruption ages of Las Tres Vrgenes volcano (Baja California): A tale of two  

E-Print Network [OSTI]

Young Drive E, Los Angeles, CA 90095, USA b Department of Geology, University of Kansas, 120 LindleyForschungsZentrum, Telegrafenberg, D-14473 Potsdam, Germany d Geology Department, California State University, Sacramento, CA 95819 February 2010 Accepted 15 February 2010 Available online xxx Keywords: Uranium series Zircon Cosmogenic

149

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

150

Ambient noise Rayleigh wave tomography of New Zealand  

Science Journals Connector (OSTI)

......positions (Taupo green, Hamilton blue...s1 obtained in the current study (Fig. 14b...toward which the energy propagates. For...reveal that the high-energy west, south and...contrast, the low-energy north coast (between...during a short-term internship. This work was undertaken......

Fan-Chi Lin; Michael H. Ritzwoller; John Townend; Stephen Bannister; Martha K. Savage

2007-08-01T23:59:59.000Z

151

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

E-Print Network [OSTI]

-dependent, subcritical crack growth, of which stress corrosion is the most important mechanism in the Earth's brittle with the chemically active pore fluid; commonly water or some aqueous solution in the upper crust. This allows crack

152

Deformation between 1989 and 1997 at Piton de la Fournaise volcano retrieved from correlation of panchromatic airborne images  

Science Journals Connector (OSTI)

......Nevertheless, the uncertainty on aerial image offset measurements at...measured by correlation of aerial and Quickbird satellite images...295-299. Froger J-L. , Fukushima Y., Briole P., Staudacher...Res. Lett., 31, L14601. Fukushima Y. , Cayol V., Durand P......

Marcello de Michele; Pierre Briole

2007-04-01T23:59:59.000Z

153

Fumarole-Supported Islands of Biodiversity within a Hyperarid, High-Elevation Landscape on Socompa Volcano, Puna de Atacama, Andes  

Science Journals Connector (OSTI)

...including all forms of fixed C) are wind transported and deposited, with some microbial...this community signal was derived from wind- or water-deposited material dislodged...microarthropod mites are also likely capable of wind-borne dispersal (57). Therefore...

Elizabeth K. Costello; Stephan R. P. Halloy; Sasha C. Reed; Preston Sowell; Steven K. Schmidt

2008-12-12T23:59:59.000Z

154

A new technique of radiation thermometry using a consumer digital camcorder: Observations of red glow at Aso volcano, Japan  

Science Journals Connector (OSTI)

We newly developed a technique of radiation thermometry using a Sony’s consumer digital camcorder. Our system is not only convenience and cost effective but with a better performance than previous infrared the...

Takeshi Saito; Satoshi Sakai; Isao Iizawa; Eriko Suda…

2005-02-01T23:59:59.000Z

155

Druitt, T. H. & Kokelaar, B. P. (eds) 2002. The Eruption of Soufrière Hills Volcano, Montserrat, from 1995 to 1999.:  

Science Journals Connector (OSTI)

...established'. Great stuff and a real eye opener to the personalities...surrounded by dense housing estates with their attendant vandalism...Valuing the Resource: the Sustainable Ap-proach', was introduced...in Somerset has remained a sustainable resource despite two centuries...

Mike Branney

156

The Distribution and Origin of Radon, CO2 and SO2 Gases at Arenal Volcano, Costa Rica  

E-Print Network [OSTI]

caracterización geoquímica pasiva y activa de volcanes con emisiones gaseosas. Técnicas como éstas pueden proveer

Williams-Jones, Glyn

157

Yaroshevskite, Cu9O2(VO4)4Cl2, a new mineral from the Tolbachik volcano, Kamchatka, Russia  

Science Journals Connector (OSTI)

...26 Temperature (K) 293(2) Radiation and wavelength (a) MoKalpha...single-crystal diffractometer (MoKalpha radiation) equipped with an image-plate...structure of kamchatkite, a new naturally occuring oxychloride sulphate of potassium...

I. V. Pekov; N. V. Zubkova; M. E. Zelenski; V. O. Yapaskurt; Yu. S. Polekhovsky; O. A. Fadeeva; D. Yu. Pushcharovsky

158

Calc-alkaline mafic rocks of the Black Dyke Formation: Remnants of the final activity of a submerged Permian volcano  

SciTech Connect (OSTI)

The Permian Black Dyke Fm., which occurs as large tectonic slices within the Luning allochthon in the Excelsior Mountains, NV, forms an E-W trending anticline at Black Dyke Mountain. The 800-m thick stratigraphic succession consists of volcanic and pyroclastic rocks overlain conformably by volcaniclastic sediments. Along the northern limb of the anticline, the rocks consist of mafic porphyritic lavas, breccias, and graded and ungraded pyroclastic beds. The sedimentary unit consists of thick volcaniclastic turbidites overlain by conglomerates, sandstones, and mudstones. Along the southern limb of the anticline, the sequence is replaced by reworked breccia, tuffs, and sandstones. Mafic plutonic rocks occur as xenoliths in the lavas and breccias, and as coeval plugs intruding the section. Gabbros show cumulate or porphyritic textures and are composed of amph, cpx, and zoned plag. Their Ti/V (14.5--15) and Nb/Y (0.25--0.3) ratios fall in the range commonly found in calc-alkaline rocks. Diorite porphyry shows high Al[sub 2]O[sub 3], ZrO[sub 2], and REE abundances indicating that this rock is more fractionated. Basalts and andesites are plag-cpx-opx phyric. They often include glomeroporphyritic clots of cpx with amph coronas. Some rocks exhibit fluidal textures. Both volcanic and plutonic rocks show homogeneous geochemical features and similar crystallization sequences: Fe-Ti oxides---->plag---->opx + cpx----> brown zoned hbl, suggesting that they are cogenetic. Thus, the lower part of the Black Dyke Fm. likely represents the final products formed in a calc-alkaline magma chamber because pyroclastic rocks prevail over lava flows and abundant early crystal cumulates occur as plugs or as inclusions in the lavas and breccias.

Blein, O.; Lapierre, H.; Pecher, A. (URA-CNRS, Grenoble (France)); Schweickert, R.A. (Univ. of Nevada, Reno, NV (United States). Dept. of Geological Science)

1993-04-01T23:59:59.000Z

159

Atmospheric chemistry of a 3334 hour old volcanic cloud from Hekla Volcano (Iceland): Insights from direct sampling  

E-Print Network [OSTI]

trihydrate (NAT), sulfuric acid tetrahydrate (SAT), and liquid ternary solution H2SO4/H2O/HNO3 (STS period of daylight, consistent with the very low levels of ozone observed. This combination

Rose, William I.

160

The Behaviour of Base Metals in Arc-Type Magmatic-Hydrothermal Systems Insights from Merapi Volcano,  

E-Print Network [OSTI]

zone stratovolcanoes provide important windows on the magmatic-hydrothermal processes at playThe Behaviour of Base Metals in Arc-Type Magmatic- Hydrothermal Systems ­ Insights from Merapi systems include a shallow magmatic reservoir (the porphyry stock), an overlying hydrothermal cell, its

Barnes, Sarah-Jane

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

Fumarole-Supported Islands of Biodiversity within a Hyperarid, High-Elevation Landscape on Socompa Volcano, Puna de Atacama, Andes  

Science Journals Connector (OSTI)

...sustained by areas of steam-warmed ground...of the fumarolic system for comparison. Assessments of basic soil properties...from two nearby steam vents by using...global-positioning-system device (Garmin...alignment search tool (BLAST) (2...

Elizabeth K. Costello; Stephan R. P. Halloy; Sasha C. Reed; Preston Sowell; Steven K. Schmidt

2008-12-12T23:59:59.000Z

162

Drainage network development in the Keanakko`i tephra, Klauea Volcano, Hawai`i: Implications for fluvial erosion  

E-Print Network [OSTI]

to better understand when valley networks were active, how long they were active, and the processes involved for fluvial erosion and valley network formation on early Mars Robert A. Craddock,1 Alan D. Howard,2 Rossman P to characterize Martian valley and channel networks. To date, however, little attention has been paid to the role

Hawai'i at Manoa, University of

163

Anatomy of 1986 Augustine volcano eruptions as recorded by multispectral image processing of digital AVHRR weather satellite data  

Science Journals Connector (OSTI)

Eighteen digital AVHRR (advanced very high resolution radiometer) data sets from NOAA-6 and NOAA-9 polar-orbiting satellites recorded between 27 March and 7 April...6–8x107...metric tonnes/day) facilitated intens...

Rick E Holaske; William I Rose

1991-08-01T23:59:59.000Z

164

Source of the great A.D. 1257 mystery eruption unveiled, Samalas volcano, Rinjani Volcanic Complex, Indonesia  

Science Journals Connector (OSTI)

...cold summer with incessant rains, associated with devastating floods and poor harvests (10). The interhemispheric transport of tephra and sulfate suggests...shook the Earth, stranded in Leneng (Lenek), dragged by the boulder flows, People escaped and some of them climbed the hills...

Franck Lavigne; Jean-Philippe Degeai; Jean-Christophe Komorowski; Sébastien Guillet; Vincent Robert; Pierre Lahitte; Clive Oppenheimer; Markus Stoffel; Céline M. Vidal; Surono; Indyo Pratomo; Patrick Wassmer; Irka Hajdas; Danang Sri Hadmoko; Edouard de Belizal

2013-01-01T23:59:59.000Z

165

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

E-Print Network [OSTI]

, a major oil spill began in the Gulf of Mexico. Although the preferred method for dealing with the oil the combustion process. Problem 1 ­ The Gulf Oil Spill is predicted to generate 200,000 gallons of crude oil://spacemath.gsfc.nasa.gov #12;Answer Key 157 Problem 1 ­ The Gulf Oil Spill is predicted to generate 200,000 gallons of crude

166

Tsunami deposits related to flank collapse in oceanic volcanoes: The Agaete Valley evidence, Gran Canaria, Canary Islands  

Science Journals Connector (OSTI)

Enigmatic marine conglomerates are attached at 41–188 m asl to the walls of the valley of Agaete, on the northwest coast of Gran Canaria (Canary Islands). They are formed by heterogeneous, angular to rounded heterometric volcanic clasts (roundness and maximal size decreasing with altitude), and fossils (rhodolites and marine shells), never found in growth position and often broken. The deposits are internally stratified into several layers, most of them showing very poor sorting, matrix-supported and reverse grading. They present lenticular morphologies with poor lateral continuity in transversal and longitudinal sections. Slopes show values and orientations similar to those of the relief of the substratum to which they seem to adapt. Although they show clear evidence of erosive contact with the substratum (rip up clasts), they do not tend to form horizontal terraces. Soft materials (soils and colluviums) are preserved in the contact with the substratum in outcrops with deposit slopes of up to 15°. The age of the deposits is constrained between 1.75 Ma and 32 ka. Their altitude and slope distributions are not related to Pleistocene interglacial sea level changes, storm deposits or isostatic movements. All the above suggests that the Agaete marine deposits were generated by tsunami waves, the most probable source being a flank failure, at least nine major such events having occurred in the Canary Islands during the Pleistocene. The Güímar sector collapse (east coast of Tenerife, 30 km3) is the closest possible source for the tsunami and the sole flank failure that is directed towards another island in the Canaries.

Francisco J. Pérez-Torrado; Raphaël Paris; María C. Cabrera; Jean-Luc Schneider; Patrick Wassmer; Juan-Carlos Carracedo; Ángel Rodríguez-Santana; Francisco Santana

2006-01-01T23:59:59.000Z

167

Factors controlling the morphology of monogenetic basaltic volcanoes: The Holocene volcanism of Gran Canaria (Canary Islands, Spain)  

Science Journals Connector (OSTI)

A detailed morphometric analysis was performed on the 24 Holocene eruptions of Gran Canaria, a nearly circular island located at the centre of the Canary Islands (Spain), developed as result of the eastward movement of the African plate over a mantle hotspot. Rigorous field work was carried out to generate a palaeogeomorphological reconstruction of the Holocene eruptions of Gran Canaria to obtain pre- and post-eruption digital terrain models (DTMs). These eruptions were of Strombolian monogenetic basaltic volcanism style. With respect to the cones, feeder fissures determine their location and some morphological features as crater openings which are usually perpendicular to the slope direction. In addition, the trade winds influence the final volcanic edifice shape and the extent of the pyroclastic sheet-like fall deposits. For the lava flows, the most significant controls are the eruption rate, affecting the maximum distance travelled, and the gully slope and shape that condition their flow path. Concerning volcanic hazard and risk assessment, the applied methodology has led to a better understanding of the recent eruptions and foresees the location and nature of future eruptions.

A. Rodriguez-Gonzalez; J.L. Fernandez-Turiel; F.J. Perez-Torrado; R. Paris; D. Gimeno; J.C. Carracedo; M. Aulinas

2012-01-01T23:59:59.000Z

168

E-Print Network 3.0 - acrodermatitis enteropathica-like eruption...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO, KURILE ISLANDS, RUSSIA Summary: FREQUENT BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO,...

169

E-Print Network 3.0 - acneiform eruptions Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO, KURILE ISLANDS, RUSSIA Summary: FREQUENT BASALTIC PLINIAN ERUPTIONS IN THE HISTORY OF CHIKURACHKI VOLCANO,...

170

Newberry EGS Demonstration | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Production: Evaluation of Stimulation at the Newberry Volcano EGS Demonstration Site Microearthquake Technology for EGS Fracture Characterization Newberry Volcano EGS Demonstration...

171

POS: A Practical Order Statistics Service for Wireless Sensor Networks  

E-Print Network [OSTI]

of different environments, including the Golden Gate Bridge [1], Great Duck Island [2] and Tungurahua volcano

Cox, Landon

172

The hydroelectric problem of porous rocks: inversion of the position of the water table from self-potential data  

Science Journals Connector (OSTI)

......Fournaise volcano, a large shield volcano located...this area [one borehole and electromagnetic...volcanic areas where drilling is expensive. permeability...In addition, drilling a set of boreholes...Fournaise volcano, a large shield volcano on...or possibly in a borehole) is the convolution......

A. Revil; V. Naudet; J. D. Meunier

2004-11-01T23:59:59.000Z

173

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]

doi:10.1029/2003GC000597. Sinton, J. M. , D. S. Wilson, D.10.1016/0012-821X(83)90083-3. Sinton, J. M. , R. C. Price,296. Cushman, B. , J. Sinton, G. Ito, and J. Eaby Dixon (

Tian, Liyan

2011-01-01T23:59:59.000Z

174

Hydrogeology of Stromboli volcano, Aeolian Islands (Italy) from the interpretation of resistivity tomograms, self-potential, soil temperature and soil CO2 concentration measurements  

Science Journals Connector (OSTI)

......France 9 Earth and Atmospheric Sciences Department...can occur when water encounters a...measurements with a generator and a voltmeter...two-phase (liquid water and steam) flow...concentration below atmospheric level (350 ppm...The evidence of atmospheric levels of soil...infiltration of meteoric water can flow on the......

A. Revil; A. Finizola; T. Ricci; E. Delcher; A. Peltier; S. Barde-Cabusson; G. Avard; T. Bailly; L. Bennati; S. Byrdina; J. Colonge; F. Di Gangi; G. Douillet; M. Lupi; J. Letort; E. Tsang Hin Sun

2011-09-01T23:59:59.000Z

175

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]

ppm) a Indian MORB mantle a AOC Fluid b Sediment Melt c O1Altered oceanic crust (AOC) fluid; trace element composition

Tian, Liyan

2011-01-01T23:59:59.000Z

176

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]

Res. , 104, 725–736. Camus, G. , Gourgaud, A. & Mossand-2200 years before present (Camus et al. 2000; Newhall et al.supposed by Van Bemmelen (Camus et al. 2000). Aside from the

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

2006-01-01T23:59:59.000Z

177

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]

42 Figure 4.3 ‘Excess’ CF4 and SF6 plotted against distanceSF 6 (fmol kg -1 H 2 O) W CF4 = 4.5 fm ol kg -1 H 2 O kyr -1solubility coefficient for CF4 CGW fit, this study CGW fit,

Deeds, Daniel A

2008-01-01T23:59:59.000Z

178

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]

42 Figure 4.3 ‘Excess’ CF4 and SF6 plotted against distance+04 1.E+03 1.E+02 1.E+00 W CF4 = 4.5 fmol kg -1 H 2 O kyr -1solubility coefficient for CF4 Wen and Muccitelli, 1979

Deeds, Daniel A.

2008-01-01T23:59:59.000Z

179

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]

In most cases CFC-113 and PCE have molar X i /CFC-12 ratios3) containing more CFC-113 and PCE than the followingamounts of CFC-113 and PCE as the first sample collected on

Deeds, Daniel A.

2008-01-01T23:59:59.000Z

180

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]

In most cases CFC-113 and PCE have molar X i /CFC-12 ratios3) containing more CFC-113 and PCE than the followingamounts of CFC-113 and PCE as the first sample collected on

Deeds, Daniel A

2008-01-01T23:59:59.000Z

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.


181

Long-term changes in quiescent degassing at Mount Baker Volcano, Washington, USA; Evidence for a stalled intrusion in 1975 and connection to a deep magma source  

E-Print Network [OSTI]

2009 Available online 28 July 2009 Keywords: Mount Baker gas emission chemistry fumarole hydrothermal and carbon dioxide output was observed both in emission rates and in fumarole samples. Emission rates of CO2 and decreases in the CO2/CH4 ratio since 1975 suggest a long steady trend back toward a more hydrothermal gas

182

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]

Concentrations of rare earth elements (REE) and other traceby seawater. Rare earth elements and Sr were separated onbetter than 5% for rare earth elements (REEs). c Strontium

Tian, Liyan

2011-01-01T23:59:59.000Z

183

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]

, A combined remote Raman and fluorescence spectrometer system for detecting inorganic and biological materials, and S.M. Clegg, 2007, Combined remote LIBS and Raman spectroscopy at 8.6m of sulfur-containing minerals throughflow: A heat and freshwater conveyor, Geophys. Res. Lett., 33, L23617, doi:10.1029/2006GL028350, IPRC

184

UTh dating of zircons from Holocene potassic andesites (Maanshan volcano, Tengchong, SE Tibetan Plateau) by depth profiling: Time scales and nature of  

E-Print Network [OSTI]

. Schmitt c , Jianli Sui b a Department of Geology and Geography, Auburn University, Auburn, AL 36849, USA b Institute of Geology, China Earthquake Administration, Beijing 100029, China c Department of Earth and Space Uranium series disequilibrium Ion probe Residence time Tibetan Plateau Throughout the Cenozoic, post

185

UTh systematics of dispersed young volcanoes in NE China: Asthenosphere upwelling caused by piling up and upward thickening of stagnant Pacific slab  

E-Print Network [OSTI]

of California, Los Angeles, CA 90095, USA b Institute of Geology, China Earthquake Administration, Beijing 100029, China c Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China for investigating the mechanism of dispersed continental volcanism using short-lived uranium-series isotopes. We

186

Pyroclastic flows and lavas of the Mogan and Fataga formations, Tejeda Volcano, Gran Canaria, Canary Islands: mineral chemistry, intensive parameters, and magma chamber evolution  

Science Journals Connector (OSTI)

The Mogan and Fataga formations on the island of Gran Canaria, Canary Islands, represent a sequence of...3 dense-rock equivalent) including subalkaline rhyolitic, peralkaline rhyolitic and trachytic pyroclastic f...

Joy A. Crisp; Frank J. Spera

1987-01-01T23:59:59.000Z

187

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

188

CitySense: An Urban-Scale Wireless Sensor Network and Rohan Narayana Murty , Geoffrey Mainland , Ian Rose , Atanu Roy Chowdhury  

E-Print Network [OSTI]

as forests [27, 4], active volcanoes [28], and the Golden Gate Bridge [19]. At the same time, to design, de

189

E-Print Network 3.0 - aerosol particle sources Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

sea salt, volcanoes, oceanicterrestrial biological sources, natural fires 12... ;Transport Power Industry Biomass burning Residential Human activity Perspective ... Source:...

190

CENTRAL AMERICA: GEOLOGY, RESOURCES AND HAZARDS; BUNDSCHUH & ALVARADO (EDS) 1 Petrology and geochemistry of lavas  

E-Print Network [OSTI]

and the overriding Caribbean plate, whereas, the volcanoes in Panama are the result of Nazca-Caribbean plate convergence (Fig. 22.1). Because the volcanoes of Panama are derived via a different plate convergence process and Quaternary volcanoes of western Panama and provided evidence for active subduction below western Panama

191

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

192

A Case Study of Wide Diameter Casing for Geothermal Systems  

SciTech Connect (OSTI)

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

193

Palaeomagnetic study of a subaerial volcanic ridge (São Jorge Island, Azores) for the past 1.3 Myr: evidence for the Cobb Mountain Subchron, volcano flank instability and tectonomagmatic implications  

Science Journals Connector (OSTI)

......island first involved the construction of an NNW-SSE ridge...responsible for the construction of the central-western...to the geographical sectors of the island. Dykes...appears as soon as the heating run starts (Figs 4a...chron, Earth Planets Space, 54, 679-690. Hsu......

P. F. Silva; B. Henry; F. O. Marques; A. Hildenbrand; P. Madureira; C. A. Mériaux; Z. Kratinová

2012-03-01T23:59:59.000Z

194

Lava Dome | Open Energy Information  

Open Energy Info (EERE)

"coulees." Volcanic domes commonly occur within the craters or on the flanks of large composite volcanoes. The nearly circular Novarupta Dome that formed during the 1912 eruption...

195

Curriculum Vitae Personal Data  

E-Print Network [OSTI]

Curriculum Vitae 1 Personal Data Name : Dudy Darmawan Wijaya Place/Date of Birth : Bandung. Thesis: "Monitoring volcano deformation using GPS Method" #12;Curriculum Vitae 2 Working

Schuh, Harald

196

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

197

E-Print Network 3.0 - atmospheric elemental concentration Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

- Department of Geography, University of North Texas Collection: Geosciences 4 Project EARTH-11-TM1: Volcanoes and the global atmospheric phosphorus cycle Summary: volcanic...

198

Advanced 3D Geophysical Imaging Technologies for Geothermal Resource Characterization  

E-Print Network [OSTI]

We describe the ongoing development of joint geophysical imaging methodologies for geothermal site characterization and demonstrate their potential in two regions: Krafla volcano and associated geothermal fields in ...

Zhang, Haijiang

2012-01-01T23:59:59.000Z

199

A Multidisciplinary Approach To Detect Active Pathways For Magma...  

Open Energy Info (EERE)

started well before its occurrence by combining geological, seismic and geochemical data gathered in this part of the volcano. We were able, in fact, to highlight fractured...

200

Enhanced Geothermal Systems | Department of Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

About the Geothermal Technologies Office Enhanced Geothermal Systems Enhanced Geothermal Systems The Newberry Volcano near Bend, Oregon is one of five active Energy Department...

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

Oregon: DOE Advances Game-Changing EGS Geothermal Technology...  

Office of Environmental Management (EM)

demonstration project, at Newberry Volcano near Bend, Oregon, represents a key step in geothermal energy development, demonstrating that an engineered geothermal reservoir can...

202

Hanford Sitewide Probabilistic Seismic Hazard Analysis  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

seismic events are typically shallow (for example blasts generated in mines, quarries, and roadcuts; volcanoes; atmospheric phenomena). In the crustal earthquake catalog...

203

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

204

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

205

Atmos. Chem. Phys., 8, 66556663, 2008 www.atmos-chem-phys.net/8/6655/2008/  

E-Print Network [OSTI]

on how far these emissions are transported prior to deposition, these emissions can have important.s.l.) is a high emission rate, passively degassing active volcano located 60 km south-east of Mexico City and Physics SO2 emissions from Popocat´epetl volcano: emission rates and plume imaging using optical remote

Meskhidze, Nicholas

206

Microbial Ecology of the Dark Ocean above, at, and below the Seafloor  

Science Journals Connector (OSTI)

...host unique features in the form of mud volcanoes, gas seeps, and gas hydrates (Fig. 4). Mud volcanoes and cold gas...sediments, p. 99-139. In I. R. Kaplan (ed.), Natural gases in marine sediments. Plenum, New York, NY. 88...

Beth N. Orcutt; Jason B. Sylvan; Nina J. Knab; Katrina J. Edwards

2011-06-01T23:59:59.000Z

207

Science Education Handout June 2014 Where Can I Find It? What Can I Do With It? What Does It Look Like?  

E-Print Network [OSTI]

volcano FAQs, download educational posters and teacher guidebooks, view volcano movies, and exploreScience Education Handout June 2014 Where Can I Find It? What Can I Do With It? What Does It Look Like? Educational Resources for Primary, Secondary, and University Educators and Students http://education

Torgersen, Christian

208

Integrating retrievals of volcanic cloud characteristics from satellite remote sensors: a summary  

Science Journals Connector (OSTI)

...pressure using the Ca, H and K lines in the solar spectrum. Future designs of TOMS instruments...and Colima volcanoes, Costa Rica and Mexico: February 1982. J. Geophys. Res...eruptions of El Chichon Volcano (Chiapas, Mexico): character of the eruptions, ashfall...

2000-01-01T23:59:59.000Z

209

Microbial Ecology of the Dark Ocean above, at, and below the Seafloor  

Science Journals Connector (OSTI)

...features in the form of mud volcanoes, gas seeps, and gas hydrates (Fig. 4). Mud volcanoes and cold gas seeps are...gas content, some of the gas can become trapped in gas hydrates, gas-rich ice-like structures formed from the reaction...

Beth N. Orcutt; Jason B. Sylvan; Nina J. Knab; Katrina J. Edwards

2011-06-01T23:59:59.000Z

210

PMEL/Vents Ocean Acoustics Bob Dziak, Presenter  

E-Print Network [OSTI]

and endangered species under MMPA and ESA)species under MMPA and ESA) Ocean explorationOcean exploration Seismic, volcano and tsunami hazard researchSeismic, volcano and tsunami hazard research Ocean ambient noise)Nuclear Test Ban Treaty verification (Dept of Energy) Identification of illegal fishing

211

2/02 NASA JSC Destination: Mars 17 Making and Mapping  

E-Print Network [OSTI]

. Background Volcanoes and/or lava flows are prominent features on all large rocky planetary bodies. Even some: Mars 2/02 NASA JSC In addition to shield volcanoes,there are dark, flat layers of basaltic lava flows flat work area with newspaper to protect from spills. Classroom Pr

212

Across the Great Craterland to the Congo: a Sequel to “The Wonderland of the Eastern Congo” Describing a Journey of Exploration and Research to the Land of the Giant Craters in Tanganyika Territory, and to the Forests, Lakes, and Volcanoes of the South-Eastern Congo; with some Account of the African Apes, and the Capture and Training of the African Elephant  

Science Journals Connector (OSTI)

... CAPTAIN BARNS'S volume on his expedition in 1921-22 from Mombasa to the Congo at Stanleyville and thence to Capetown is a valuable contribution to the natural history of ... expedition was the discovery of a large butterfly which has been seen on the Upper Congo, but has not yet been captured. On his way to the haunts of this ...

1924-11-29T23:59:59.000Z

213

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

214

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

215

A&G Volume 54 Issue 5, Full Issue  

Science Journals Connector (OSTI)

......discovers 24 pulsars Citizen science targets volcanoes Chandra marathon shows black hole habits More water found on the Moon. 8 Missionupdate...environmental monitoring, data handling for industries including oil exploration and financial services ... all these are areas......

A&G Volume 54 Issue 5; Full Issue

2013-10-01T23:59:59.000Z

216

Rock-water interaction and evolution of sulphide ores in the late Archaean Chitradurga greenstone belt of southern India  

Science Journals Connector (OSTI)

Sulphide ore mineralization developed in proximity to iron formations in a cyclic volcano-sedimentary sequence that forms the offshore part of the late Archaean intracratonic basin of the Chitradurga greenston...

H. N. Bhattacharyay; A. D. Mukherjee; P. K. Bhattacharyay

1993-11-01T23:59:59.000Z

217

CLIMATIC AND DEMOGRAPHIC CONSEQUENCES OF THE MASSIVE VOLCANIC ERUPTION OF 1258  

E-Print Network [OSTI]

, the source volcano for the 13th century aerial fal- lout remains unknown. A Madinah, Saudi Arabia, eruption in 1256 (Camp et al., Climatic Change 45: 361­374, 2000. © 2000 Kluwer Academic Publishers. Printed

218

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

219

CREDIT:G.NOLET/PRINCETONUNIVERSITY he workings of the hot interiors of the  

E-Print Network [OSTI]

of the solar system are most dramatically expressed by the size and arrangement of their volcanoes. Most down in hydrous minerals. The water, when re- leased by metamorphism, causes already hot rock material

Manga, Michael

220

Implementation of the Integrated Planning Concept to Strengthen Indonesian Radiation Emergency Response Capabilities  

E-Print Network [OSTI]

Nuclear power has been included in Indonesian national plan as an alternative solution for electricity production. However, Indonesia lies within the Pacific Ring of Fire with around 129 active volcanoes along its region. In addition, the Indonesian...

Volia, Merinda Fitri

2014-07-30T23:59:59.000Z

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.


221

Search and Discovery Strategies for Biotechnology: the Paradigm Shift  

Science Journals Connector (OSTI)

...volcanoes, hydrocarbon seeps, and gas hydrates) open up entirely new opportunities...nov., nonpigmented, psychrophilic gas vacuolate bacteria from polar sea...and P. filamentus sp. nov., gas vacuolate polar marine bacteria of...

Alan T. Bull; Alan C. Ward; Michael Goodfellow

2000-09-01T23:59:59.000Z

222

Search and Discovery Strategies for Biotechnology: the Paradigm Shift  

Science Journals Connector (OSTI)

...volcanoes, hydrocarbon seeps, and gas hydrates) open up entirely new opportunities for...responses to stress conditions and barophilic behavior of the hyperthermophilic vent archaeon...Neumann W. Piepersberg J. Distler Decision phase regulation of streptomycin biosynthesis...

Alan T. Bull; Alan C. Ward; Michael Goodfellow

2000-09-01T23:59:59.000Z

223

Climate-driven variations in geothermal activity in the northern Kenya rift valley  

Science Journals Connector (OSTI)

... In the northern Kenya rift valley, geothermal activity is associated with a series of Quaternary volcanoes (Fig. 1). Hot, ... tables, a consequence of the semi-arid to arid climate of the region.

N. C. Sturchio; P. N. Dunkley; M. Smith

1993-03-18T23:59:59.000Z

224

Flat versus normal subduction zones: a comparison based on 3-D regional traveltime tomography and petrological modelling of central Chile and western Argentina (29°–35°S)  

Science Journals Connector (OSTI)

......volcanoes (red triangles), main cities (white circles, capital city Santiago with a star), slab contours from Anderson...41-S: observations from ODP Leg 202 and the occurrence of natural gas hydrates. Earth planet. Sci. Lett. (2003) 213(3......

M. Marot; T. Monfret; M. Gerbault; G. Nolet; G. Ranalli; M. Pardo

2014-01-01T23:59:59.000Z

225

Hybrid Threats and Supply Chain Safety Management  

Science Journals Connector (OSTI)

For almost a week in mid-April of 2010, the ash cloud of the Icelandic volcano Eyjafjallajökull brought the traffic in vast parts of the European airspace to a standstill. While public and media interest mainl...

Marc Oprach; Boris Bovekamp

2013-01-01T23:59:59.000Z

226

DOI: 10.1007/s00340-007-2858-5 Appl. Phys. B 90, 311315 (2008)  

E-Print Network [OSTI]

components of volcanic gases (carbon dioxide and sulfur dioxide) from a volcano can be used to provide early warning of a volcanic eruption. However, when hydrothermal or meteoric water systems are present

227

2004 Annual Report July 1, 2003 June 30, 2004  

E-Print Network [OSTI]

.S. Climate Change Science Program: namely, the carbon cycle and the sources, transformations, transports ecosystems and on ecosystems associated with underwater volcanoes -- hydrothermal vents. Hydrothermal vents, and thermal variablity of the oceans. Some hydrothermal microorganisms have potential application to serve

Rigor, Ignatius G.

228

PMEL Science Review Aug.26-28, 2008 Vents Program The PMEL Vents Program  

E-Print Network [OSTI]

and hydrothermal activity creates and sustains biological and mineral resources Volcanoes are an important natural and hydrothermal circulation on marine ecosystems Utilize hydrothermal environments as natural laboratories to understand globally important biogeochemical processes Utilize acoustics to monitor and understand

229

The New Era of Geothermal Energy Utilization with Aid of Nuclear Reactor Technology  

Science Journals Connector (OSTI)

Japan has about 120 active volcanoes. Estimated potential of geothermal power generation is 23,470 MWe from ... reservoirs to a depth of 3 km. Geothermal energy is expected to be an important role ... Currently, ...

Takehiko Yokomine; Masato Miura; Chineo Tawara

2012-01-01T23:59:59.000Z

230

The Defense Department Declassifies the Earth-Slowly  

Science Journals Connector (OSTI)

...volcanoes. Keep an ear to the ground for hints of surreptitious nuclear testing, and you will record almost every...military and civilian data overlap, as they do in seismic monitoring, military observations can fill gaps. Connections...

Richard A. Kerr

1994-02-04T23:59:59.000Z

231

CX-100116 Categorical Exclusion Determination | Department of...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Near a volcano in a remote part of the Alaskan Aleutian Island chain, the largest seafood producer in North America could be completely powered by geothermal energy. A new...

232

Hydrothermal exploration drilling on the island of Akutan, Alaska...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Near a volcano in a remote part of the Alaskan Aleutian Island chain, the largest seafood producer in North America could be completely powered by geothermal energy. A new...

233

National Aeronautics and Space Administration www.nasa.gov  

E-Print Network [OSTI]

of Mount Sharp in Gale Crater to understand Mars as a possible place for life. A dust devil towers about are younger, having formed between 1 and 2 billion years ago. Mars has the largest volcano in the solar system

Waliser, Duane E.

234

Pyroclastic flows and surges over water: an example from the 1883 Krakatau eruption  

Science Journals Connector (OSTI)

Pyroclastic deposits from the 1883 eruption of Krakatau are described from areas northeast of the volcano on the islands of Sebesi, Sebuku, and Lagoendi, and the southeast coast of Sumatra. Massive and poorly ...

S. Carey; H. Sigurdsson; C. Mandeville; S. Bronto

1996-04-01T23:59:59.000Z

235

Mantle Helium And Carbon Isotopes In Separation Creek Geothermal...  

Open Energy Info (EERE)

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...

236

Biosensor Control of Acute Total Toxicity of Water and Soil Polluted by Polycyclic Aromatic Hydrocarbons  

Science Journals Connector (OSTI)

In this article a short analysis of total toxicity of different samples of water and soil (obtained from some Azerbaijan mud bobbling volcanoes, region of oil production, railway lines, Dnieper river and prepa...

Nikolay F. Starodub

2005-01-01T23:59:59.000Z

237

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

238

E-Print Network 3.0 - age xenocrystic zircons Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SE Tibetan Plateau) by depth profiling: Time scales and nature of Summary: short-lived uranium-thorium (U-Th) isotopes. Here we report U-Th zircon ages from Maanshan volcano...

239

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]

analyses of spinel inclusions trapped in olivine phenocrysts and in melt inclusions from Xitle, Las Tetillas, Jumiltepec, Ixcatepec and Tuxtepec volcanoes. 36 9 Analysis conditions for melt inclusion and matrix glasses, olivine crystals and Cr-spinel... inclusions. 43 10 Melt inclusions general characteristics from Xitle, Las Tetillas, Jumiltepec, Ixcatpec and Tuxtepec volcanoes. 50 11 Original melt Mg?'s calculated from melt inclusions, Cr-spinels and olivines. 64 12 Comparison of whole rock analyses...

Cervantes, Pablo

2012-06-07T23:59:59.000Z

240

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

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

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

242

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

243

Jefferson Lab Science Series - Living and Working in the Freezer  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

244

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

245

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

246

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.

247

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

248

Newberry EGS Demonstration Project Environmental Analysis (EA)  

Broader source: Energy.gov (indexed) [DOE]

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,

249

Indonesian eruption: Muddy waters  

Science Journals Connector (OSTI)

... earthwork-protected area that allows access to the Big Hole, bustling workers dismantle a drilling rig that tried and failed to intercept the mud surge on its way to the surface ... Adelaide in Australia, says the Sidoarjo volcano has a striking similarity to drilling-induced eruptions offshore from Brunei in 1974 and 1979 (M. R. P. Tingay et al. ...

David Cyranoski

2007-02-21T23:59:59.000Z

250

Deposits, character and timing of recent eruptions and gravitational collapses in Tatun Volcanic Group, Northern Taiwan: Hazard-related issues  

E-Print Network [OSTI]

, as well as two nuclear power plants built directly near the foot of the volcanoes. The TVG itself includes Taiwan Taipei City, with a population of around 8 million, as well as two nuclear power plants is located of the nuclear power plants may have a global impact. The potential for renewed activity of the TVG has been

Belousov, Alexander

251

Interactive Visualization of Modeled Atmospheric Trace Constituents Carmen M. Benkovitz  

E-Print Network [OSTI]

the effects of the emissions of Popocatepetl volcano, located near Mexico City. The effects of stronger of the Brookhaven National Laboratory Chemical Transport Model (CTM) of sulfate in the atmosphere. The visualization on climate. Anthropogenic activities affect the aerosol content of the atmosphere. Anthropogenic emissions

252

Zircon Thermometer Reveals Minimum Melting Conditions on Earliest Earth  

Science Journals Connector (OSTI)

...within 200 million years of solar system formation. They further...nodule from Labait volcano in Tanzania (16); and a rutile-bearing migmatite from...within 200 million years of solar system formation. They...within 200 million years of solar system formation. They further...

E. B. Watson; T. M. Harrison

2005-05-06T23:59:59.000Z

253

Fumarolic Activity, Acid-Sulfate Alteration and High-Sulfidation Epithermal Precious Metal  

E-Print Network [OSTI]

described in this thesis involved sampling and chemical analyses of the gases and their condensates (the and rock samples taken from the alteration center. Condensed fumarolic gases (pH ~ -0.5) released from condensed ~ 250 m beneath the floor of the pre-1817 crater at Kawah Ijen volcano. In the area near

254

doi: 10.1130/G34305.1 2013;41;851-854Geology  

E-Print Network [OSTI]

, ongoing) have produced supra­ice/snow lava flows (Siebert and Simkin, 2002), several of which caused local that interactions between lava and ice/ snow can produce dangerous explosions. Erup- tions at ice-covered volcanoes, Robert Wysocki, Einat Lev, Ilya Bindeman and Ulrich experiments ice/snow interactions from large

Lev, Einat

255

Climate forcing Climate forcing  

E-Print Network [OSTI]

parameters (solar distance factors) solar luminosity moon orbit volcanoes and other geothermal sources,000 years (large panels) and since 1750 (inset panels). Measurements are shown from ice cores (symbols forcings are shown on the right hand axes of the large panels. {Figure 6.4} !"#$#%&'(!&#)$&*$+#$,-.$/0

MacKinnon, Jennifer

256

COURSE TITLE CREDITS A A 260 THERMODYNAMICS 4  

E-Print Network [OSTI]

RESOURCE 5 ESRM 441 LANDSCAPE ECOLOGY 5 ESS 210 PHYSICAL GEOLOGY 5 ESS 211 PHYSICAL PROCESSES OF THE EARTH 5 ESS 212 EARTH MATERIALS & PROCESSES 5 ESS 213 EVOLUTION OF THE EARTH 5 ESS 301 GEOLOGY OF THE NW 5 ESS 302 GREAT ICE AGE 5 ESS 304 VOLCANOES & GLACIERS OF THE PACIFIC NW 5 ESS 305 GEOLOGY

257

Power-Efficient Real-Time Data Collection using Mobile Robots Frederick E. Diehl, Joshua J. Curtis, Salvador J. Rodriguez,  

E-Print Network [OSTI]

, habitat and volcano monitoring). However, considering the limited energy budget in sensor nodes, power and conveys the data to a base station. Tar- geting at minimizing the energy consumption on the static sensors, we study power efficient path planning schemes for the mobile robot, which also has limited energy

Zhu, Dakai

258

PROCEEDINGS, Thirty-Fourth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, February 9-11, 2009  

E-Print Network [OSTI]

of 2015 nine units of geothermal electric power plants with a total capacity 450 MW are planned to be set of Mutnovsky volcano was studied by the method of numerical simulation. The distribution of temperature of natural heat carrier extraction to obtain geothermal energy are the subject of studying of mining thermal

Stanford University

259

2003 Geological Society of America. For permission to copy, contact Copyright Permissions, GSA, or editing@geosociety.org. Geology; October 2003; v. 31; no. 10; p. 893896; 1 figure. 893  

E-Print Network [OSTI]

volcano, Hawaii, by using a forward- looking infrared (FLIR) 595 PM ThermaCAM, in order to assess-flow surfaces. The FLIR images show that an active lava-flow surface comprises a contin- uum of temperatures the FLIR images to be de- termined. Thus, although the hyperspectral data provided by the EO-1 Hyperion

Wright, Robert

260

Publications of the Hawaii Institute of Geophysics and Planetology University of Hawaii  

E-Print Network [OSTI]

. Porter, Atmospheric nuclei and related aerosol fields over the Atlantic: Clean subsiding air.M. Thomas], 1997, Fluid flow and water-rock interaction in the east rift zone of Kilauea Volcano, Hawaii, J of the sound field generated by a resonant magma conduit, J. Volcanol. Geoth. Res., 78, 155-178. 14. Gauldie, R

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

Structure and elasticity of serpentine at high-pressure Mainak Mookherjee a,  

E-Print Network [OSTI]

volcanoes, high electrical conductivities, magnetic and seismic anomalies. Using theoretical methods, we. Evidence of pressure- induced hydrogen bonding is absent in serpentine, as evident from reduction of O K is the bulk modulus, prime indicates pressure derivatives, and O refers to zero pressure. Our best

Stixrude, Lars

262

Single photon ionization of van der Waals clusters with a soft x-ray laser: ,,SO2...n and ,,SO2...n,,H2O...m  

E-Print Network [OSTI]

dioxide emissions from combustion, coal treat- ment, and volcanos can form acids in the atmosphere,,H2O...m F. Dong Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523 and Technology, Colorado State University, Fort Collins, Colorado 80523 E. R. Bernsteina Department of Chemistry

Rocca, Jorge J.

263

Sequence stratigraphy of the late Pleistocene - Holocene deposits on the northwestern margin of the South Caspian Basin  

E-Print Network [OSTI]

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...

Rahmanov, Ogtay Rasim

2004-11-15T23:59:59.000Z

264

Article original Biomasse, productivit et transferts de matire  

E-Print Network [OSTI]

Article original Biomasse, productivité et transferts de matière organique dans une séquence le 19 septembre 1995) Summary - Biomass, productivity and organic matter fluxes in Castanea sativa elevations were studied on the flanks of the Etna volcano (Sicily). Aboveground biomass was to 22 and 24 Mg

Paris-Sud XI, Université de

265

Extremes in climate science Andreas Sterl (KNMI)  

E-Print Network [OSTI]

(non-deterministic) influences: sun, volcanoes, anthropogenic effects (GHG emissions) => deterministic Sterl, PhysMathClim Climate change GHG concentrations increase => Temperature increases => other weather;31.01.2012, Utrecht Andreas Sterl, PhysMathClim EVT - 1 Extremes: tail of a distribution => few observations => tail

Stoffelen, Ad

266

Structure of the Upper Crust in Japan from S-Wave Attenuation Tomography  

E-Print Network [OSTI]

, vol- canoes, and/or temperature distribution in a region under- going active deformation. Data, Zhongxiong Cui, Youshun Sun, M. Nafi Toksöz, Charlotte A. Rowe, Xing Gao, Junmeng Zhao, Hongbing Liu, Jiankun Japanese islands, with almost the same distribution as volcanoes, while high Q-values exist mainly between

Sun, Youshun

267

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

Science Journals Connector (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 20–21 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

268

Today's Features The heat is on  

E-Print Network [OSTI]

potential is being estimated. A major part of geothermal energy is released through ground water circulation of the expenditure incurred for power generation using geothermal energy," said NGRI deputy director T Harinarayana-20% of their electricity needs using geothermal energy. Besides efficient drilling equipment, the prevalence of volcanoes

Harinarayana, T.

269

Dispersin de los sedimentos y fluctuaciones en temperatura de la erupcin del volcn Copahue en mayo 2013  

E-Print Network [OSTI]

sismos volcano-tectónicos, emisiones de y otros gases volcánicos (OVDAS 2013). Esta investigación es el análisis de las emisiones de gases volcánicos (OVDAS 2013). OVDAS (2003) in

Gilbes, Fernando

270

Geophysical Investigations of Magma Plumbing Systems at  

E-Print Network [OSTI]

Systems at Cerro Negro Volcano, Nicaragua Examining Committee: Chair: Doug Stead Professor Glyn Williams ensured that this work ever reached this stage. I thank my advisor, Glyn Williams-Jones, for first had it not been for my fellow graduate student Jeff Zurek, without whose amazing field skills

Williams-Jones, Glyn

271

hal-00205429,version1-16Jan2008 On the number of droplets in aerosols  

E-Print Network [OSTI]

and pollution. Epidemics, radioactive elements can be carried by small droplets; volcanoes generate sulphated aerosols contributing to the destruction of the ozone layer. The planetary atmospheres are charged with such mixtures in suspension. The interaction between oceans and atmosphere generates mixtures of gas and water

Paris-Sud XI, Université de

272

Focal Mechanisms from Sparse Observations by Nonlinear Inversion of Amplitudes: Method and Tests on Synthetic and Real Data  

Science Journals Connector (OSTI)

...earthquakes in reservoirs but not in volcano geothermic or mining contexts. Method Description...the Fenton Hill hot dry rock geothermal energy site, New Mexico, Int. J. Rock. Mech...at the Hijiori hot dry rock geothermal energy site, Yamataga, Japan, Tectonophysics...

Maxime Godano; Marc Regnier; Anne Deschamps; Thomas Bardainne; Emmanuel Gaucher

273

Seismic interpretation of hydrocarbon seep features, Garden Banks, Gulf of Mexico  

E-Print Network [OSTI]

identified and interpreted in Garden Banks lease blocks 424 and 425. The seep features consisted of two mud volcanoes and a mud in-filled depression. The hydrocarbon seep features were characterized by their rates and styles of seepage. All of the seep...

Mullins, Adam Joseph

2001-01-01T23:59:59.000Z

274

Anomalous focal mechanisms: tensile crack formation on an accreting plate boundary  

Science Journals Connector (OSTI)

... In 1981, an intensive 3-month seismic monitoring project was carried out in the Hengill geothermal area of Iceland (Fig. 1). The project was designed using foreknowledge of the ... volcano Hengill (Fig. 1). The area is occupied by an extensive and complex geothermal field, which is hottest in the immediate vicinity of Hot Springs .·. Earthquakes ...

G. Foulger; R. E. Long

1984-07-05T23:59:59.000Z

275

RESEARCH ARTICLE Apparent downwind depletion of volcanic SO2 flux--lessons  

E-Print Network [OSTI]

. Volcano monitoring . FLYSPEC Introduction Volcanic gas emissions play an important role indicate that dry deposition of sulfur from the plume and conversion of SO2 to sulfate aerosols within 5km downwind, and is responsible for the apparent loss of SO2. Due to the importance of SO2 emission

Williams-Jones, Glyn

276

Volcanic hot spot detection from optical multispectral remote sensing data using artificial neural networks  

Science Journals Connector (OSTI)

......then filtered through a linear threshold gate. The output signal is forwarded to another...right: 2006 August 31, 20:39 UTC. In red, lava pixels. In yellow, colour saturated...Books. Rothery D.A. , Francis P.W., Wood C.A. Volcano monitoring using short......

Alessandro Piscini; Valerio Lombardo

2014-01-01T23:59:59.000Z

277

Honolulu Star-Bulletin Hawaii News http://starbulletin.com/2003/08/10/news/story10.html 1 of 2 3/5/2008 1:14 PM  

E-Print Network [OSTI]

Honolulu Star-Bulletin Hawaii News http://starbulletin.com/2003/08/10/news/story10.html 1 of 2 3 of a rare bacteria collected from the volcano's vent, a deep-sea habitat similar to the primordial pools on the project, said the bacteria's DNA includes proteins -- including myoglobin and hemoglobin -- that mirror

Alam, Maqsudul

278

A two-fluid model for avalanche and debris flows  

Science Journals Connector (OSTI)

...Nevertheless, it is natural to identify these phase-averaged...travelling wave solutions in gas fluidized beds. J...DC:The Committee on Natural Disasters National Research...Council1994Mount Rainier: active cascade volcanoWashington, DC...of dry avalanches over natural terrain. J. Volcanol...

2005-01-01T23:59:59.000Z

279

Isotopes in Environmental and Health Studies Vol. 41, No. 4, December 2005, 293302  

E-Print Network [OSTI]

deployable quantum cascade laser-based sensor is described, along with line selection strategy for 13/12CO2 sensors; IR spectrometry; Natural isotope ratios; Volcanoes 1. Introduction Tunable laser absorption for the detection of low gas concentra- tion levels by improving the signal-to-noise ratio of the spectrometer

280

Digital elevation model uncertainty and hazard analysis using a geophysical flow model  

Science Journals Connector (OSTI)

...interferometric DEMs to geomorphic studies of fault scarps, Fish Lake Valley, Nevada-California, USA. Remote Sens. Environ...P. Cortes, H. Cepeda, and J. Stix 1997 Tornillo-type seismic signals at Galeras volcano, Colombia, 1992-1993. J. Volcanol...

2012-01-01T23:59:59.000Z

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.


281

1. Julie A. Huber Assistant Scientist, Josephine Bay Paul Center, Marine Biological Laboratory  

E-Print Network [OSTI]

-seafloor hydrothermal upflow zones: Evidence from diffuse flow outcrops across the 1998 Axial Volcano Sea-floor eruption of Carbon Life on Earth and Elsewhere. In W.T. Sullivan III and J.A. Baross (eds.), 275-291. Planets (eds.), 215-231. Magma to Microbe: Modeling Hydrothermal Processes at Oceanic Spreading Ridges

Vallino, Joseph J.

282

Geomicrobiology Journal (2013) 30, 430441 Copyright C Taylor & Francis Group, LLC  

E-Print Network [OSTI]

living in serpentinized muds influenced by pH 12.5 deep-slab derived fluids were detected detected within both clone libraries. Cluster analysis of the T-RFLP data revealed archaeal community mud volcanoes along the entire Mariana forearc system. The discovery and detection of both novel

Moyer, Craig

283

Planktonic and Sediment-Associated Aerobic Methanotrophs in Two Seep Systems along the North American Margin  

Science Journals Connector (OSTI)

...spectacular marine hydrocarbon seeps (Coal Oil Point, Santa Barbara Channel...Rogers. 2005. Gaias breath-global methane exhalations. Mar...plume of a massive seep field, Coal Oil Point, California. Geophys...and F. G. Dadashev. 2003. Global gas flux from mud volcanoes...

Patricia L. Tavormina; William Ussler III; Victoria J. Orphan

2008-05-16T23:59:59.000Z

284

How lava flows: New insights from applications of lidar technologies to lava flow studies  

Science Journals Connector (OSTI)

...systems record the entire waveform of the energy pulse that is backscattered from the reflecting...on lahars from Popocatepetl Volcano, Mexico: Journal of Volcanology and Geothermal...reconstruction of geohistory in the age of reform : Chicago, Illinois, University of Chicago...

K.V. Cashman; S.A. Soule; B.H. Mackey; N.I. Deligne; N.D. Deardorff; H.R. Dietterich

285

Three-dimensional crustal structure of Long Valley caldera, California, and evidence for the migration of CO2 under Mammoth  

E-Print Network [OSTI]

Three-dimensional crustal structure of Long Valley caldera, California, and evidence in Long Valley caldera in 1997. We performed a tomographic inversion for crustal structure beneath a 28 km--composition and state (old 8105); KEYWORDS: tomography, Long Valley, volcano, carbon dioxide, crustal structure

Foulger, G. R.

286

U.S. Department of the Interior U.S. Geological Survey  

E-Print Network [OSTI]

monitored geologic unrest in the Long Valley, California, area since 1980. In that year, following a swarm of strong earthquakes, they discov- ered that the central part of the Long Valley Caldera had begun actively the public and civil authorities with current information on the volcano hazards at Long Valley

Torgersen, Christian

287

U.S. Department of the Interior U.S. Geological Survey  

E-Print Network [OSTI]

moni- tored geologic unrest in Long Valley Caldera and at adjacent Mammoth Mountain, California. After)isshownindarkershadesofgreen. Mammoth Mountain is a young volcano on the southwest rim of Long Valley Caldera, a large volcanic depression in eastern California. The Long Valley area, well known for its superb skiing, hiking, and camping

Torgersen, Christian

288

Query Optimization as a Datalog Program Mengmeng Liu, Zachary G. Ives, and Boon Thau Loo  

E-Print Network [OSTI]

Query Optimization as a Datalog Program Mengmeng Liu, Zachary G. Ives, and Boon Thau Loo University is that of specifying the transformation rules and search process of a query optimizer [1]. In certain emerging domains universally understood than the languages used in transformational optimizers like those generated by Volcano

Loo, Boon Thau

289

Spring 2011 Measuring our  

E-Print Network [OSTI]

A year on, what we now know about that infamous Icelandic volcano 12 Stormy weather How satellites on the current state of the atmosphere as the starting point for the weather forecast. Satellites are now captured by a European weather satellite Credit: ESA A large cyclone over the North Atlantic Credit: Eu

290

Seismic rumbling foretold Congo eruption  

Science Journals Connector (OSTI)

... Two seismological stations on Mount Nyiragongo in eastern Congo gave several days' advance warning of the volcano's possible eruption, scientists working in ... rebels, such a request was not forthcoming from the government of the Democratic Republic of Congo in Kinshasa, say VDAP officials. ...

Tom Clarke

2002-01-24T23:59:59.000Z

291

Identification and inversion of converted shear waves: case studies from the European North Atlantic continental margins  

Science Journals Connector (OSTI)

......arrivals and enhanced energy scattering. Identifying...may be viable phase converters, arrivals converted...associated with vigorous ocean bottom currents...internal structure of ocean island volcanoes...al, 2001. Mantle thermal structure and active...inProceedings of the Ocean Drilling Program......

Jennifer D. Eccles; Robert S. White; Philip A. F. Christie

2009-10-01T23:59:59.000Z

292

Food for the Future  

Science Journals Connector (OSTI)

...harnessing free sources of energy, includ-ing the...volcanoes, and thermal gradients of the...exchangers, wind converters, and tide tur-bines...with quantities of energy of the magnitude...Fresh Water from the Ocean (Con-servation...P. C. Putnam, Energy in the Future (Van...

J. G. Harrar

1955-08-19T23:59:59.000Z

293

Estimate of the stress field in Kilauea's south flank, Hawaii  

Science Journals Connector (OSTI)

......is combined with gravity and seawater pressure to give the total...2 of Table 4, gravity and seawater pressure. The shear stress...The effects of gravity and seawater pressure have been removed...1984. Magma supply and storage at Kilauea volcano, Hawaii......

Beiyuan Liang; Carl Kisslinger; Carol Bryan

1995-10-01T23:59:59.000Z

294

Microbial Ecology of the Dark Ocean above, at, and below the Seafloor  

Science Journals Connector (OSTI)

...microbial mat from a carbonate chimney formed at the seafloor in the...Pacific Ocean. (C) Barite chimney at a mud volcano in the Gulf...search for life elsewhere in our solar system and for understanding...extinct hydrothermal sulfide chimney off axis of the East Pacific...

Beth N. Orcutt; Jason B. Sylvan; Nina J. Knab; Katrina J. Edwards

2011-06-01T23:59:59.000Z

295

INDEX TO VOLUME 106/109 This index provides coverage for both the Initial Reports and Scientific Results  

E-Print Network [OSTI]

-Atlantic Ridge: Site 395 resistivity, 206b-210b temperature measurements, 182a­ 186a, 200b, 202b-203b Snake Pit smoker. See Snake Pit Hydrother- mal Area Calcite, Serocki Volcano, low-temperature alteration, 192b to the Ocean Drilling Program. It follows the concept developed by the Deep Sea Drilling Project at Scripps

296

The Wacky Wonderful World of Cordilleran Tectonics Event Timing Description  

E-Print Network [OSTI]

-style volcanoes (Coastal Ranges of California, Cascades of Northwest); continues to operate in Northwest Flood) Uplift of Colorado Plateau Middle Miocene Large vertical uplift of flat region in American Southwest, with little internal disturbance; downward erosion of Colorado River produces Grand Canyon Exhumation

Holtz Jr., Thomas R.

297

Potential Public Health Hazards, Exposures and Health Effects from Unconventional Natural Gas Development  

Science Journals Connector (OSTI)

(23) The September 2013 catastrophic flood in northeastern Colorado, for example, resulted in 13 notable releases of oil, totaling 43?134 gallons, and 17 releases of produced water, totaling 26?385 gallons. ... It includes numerous case studies on perception and social behavior dealing with floods, droughts, earthquakes, volcano eruptions, wild fires, and landslides. ...

John L. Adgate; Bernard D. Goldstein; Lisa M. McKenzie

2014-02-24T23:59:59.000Z

298

Using hydraulic equivalences to discriminate transport processes1 of volcanic flows1  

E-Print Network [OSTI]

Mexico, to distinguish the various modes of transport at play in their genesis. Using the concept11, 1987). Despite the ubiquity of25 such deposits, we only have a crude understanding of their genesis Toluca Volcano, Mexico (Fig. 1).34 HYDRAULIC EQUIVALENCES35 Models of volcanic flows invoke several

Boyer, Edmond

299

GEOPHYSICAL RESEARCH LETTERS, VOL. ???, XXXX, DOI:10.1002/, Investigating Dunedin Whistlers using Volcanic Lightning  

E-Print Network [OSTI]

in the Aleutian Islands, a region populated with active volcanoes. Their presence has allowed us to per- form- tosphere at a field-aligned plasma density irregularity, it will be closely guided along the magnetic fieldUniversity of Cape Town, Cape Town, 7701, South Africa 2Exegetic Analytics, Durban, 4001, South Africa 3

Otago, University of

300

New geochemical insights into volcanic degassing  

Science Journals Connector (OSTI)

...It is clear that, as well as measuring gas emissions...Journal of Volcanology and Geothermal Research. Scientific...eruptions. J. Volcanol. Geothermal Res. 134, 77-107...Popocatepetl Volcano, Mexico, from olivine-hosted...analysis. J. Volcanol. Geothermal Res. 108, 11-31...

2008-01-01T23:59:59.000Z

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.


301

Planktonic and Sediment-Associated Aerobic Methanotrophs in Two Seep Systems along the North American Margin  

Science Journals Connector (OSTI)

...recovered from Gulf of Mexico methane-rich sediments (66), as well as the recovery of...column environments as well as in the ERB methane...volcanoes (37, 41) or geothermal gas vents (18, 26...Gammaproteobacteria) as well as in the gammaproteobacterial...

Patricia L. Tavormina; William Ussler III; Victoria J. Orphan

2008-05-16T23:59:59.000Z

302

Time-lapse travel time change of multiply scattered acoustic waves  

E-Print Network [OSTI]

of applications where detecting temporal changes may be useful include the monitoring of volcanoes, oil reservoirs time-lapse changes in the oil reservoir caused by a massive miscible CO2 flood to enhance oil recovery heterogeneous reservoirs. © 2005 Acoustical Society of America. DOI: 10.1121/1.2000827 PACS number s : 43.20.Fn

Snieder, Roel

303

Michael Crichton's "Scientific Method" James Hansen  

E-Print Network [OSTI]

growth of greenhouse gas emissions at a moderate rate and it sprinkled three large volcanoes in the 50 updates observations of global temperature using the same analysis of meteorological station data as in #12;our 1988 paper (which removes or corrects station data from urban locations)1 . The 2005 data

Hansen, James E.

304

Seismological Work in Japan1  

Science Journals Connector (OSTI)

... THE seismological work which has been accomplished in Japan is to a great extent described in fourteen small volumes published by a Society which ... study phenomena connected with earthquakes and volcanoes. This Society is called the Seismological Society of Japan. An epitome of a portion of this work is to be found in nine ...

1889-10-31T23:59:59.000Z

305

ERTS: Surveying Earth's Resources from Space  

Science Journals Connector (OSTI)

...caused by shifts along the geologic fault delineated by the string of volcanoes (small back circles) parallel to the coast...sLubtends ani area abotit 79 meters square on the groulnd. I he oscillating mirror is tinmed so thatt when it has retuLrned for the next...

Thomas H. Maugh II

1973-04-06T23:59:59.000Z

306

Reducing Uncertainty in Wireless Sensor Networks  

E-Print Network [OSTI]

network. OSDI '06. [4] O.V. K. Langendoen et. al. Murphy loves potatoes: Experiences from a pilot sensor Island [1] Redwood Tree (Wikipedia) Redwoods [2] Agriculture [4] Potato Field (Kevin Temple) Volcano, Memento2 ­ "Heisenbugs" ­ Waste of resources ­ Monitoring suffers from network problems, too. [1] N

307

Wairakei - The First Twenty Years  

SciTech Connect (OSTI)

The Wairakei Geothermal Power Complex is situated five kilometers north of Lake Taupo in the North Island of New Zealand. The Wairakei system consists basically of a highly permeable hot water aquifer contained within almost impermeable boundaries. Steam is produced from the hot fluid in a three-stage flash process. Initially the first stage produced steam at 13.8 bar g (200 psig) but due to declining field pressure this has been progressively reduced to 8.3 bar g (120 psig) by mid-1980. The second stage produces steam at 5.5 bar g (80 psig). In 1972 the third stage flashing facilities were installed to utilize the otherwise waste saturated water from the second stage. This produces steam at 1.72 bar g (25 psig). The first machine was synchronized to the national grid on 15 November 1958 and the last machine in October 1964. Development of the power complex was in two stages and has a total installed capacity of 192 MWe. The final arrangement of equipment is shown in Figure la. The unusual complexity of small machines in the Stage I development is a result of the initial concept containing a heavy water distillation plant. This plant, however, was stopped early in the project, but not before manufacturing contracts had been let. At this stage it was considered too late to redesign the whole project, so, to take the place of the distillation plant, additional turbo-generators were installed. The Stage II development added 3 x 30 MWe mixed pressure machines.

Thain, Ian A.; Eng., C.; Mech. Eng., M.I.

1980-12-01T23:59:59.000Z

308

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

SciTech Connect (OSTI)

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

309

Growth, destruction and facies architecture of effusive and explosive volcanics in the Miocene Shama basin, southwest of Saudi Arabia: Subaqueous–subaerial volcanism in a lacustrine setting  

Science Journals Connector (OSTI)

Abstract The Harrat Shama Volcanic Basin (HSVB) is a part of a small, well-exposed intra-continental extensional basin that formed during the opening of the Red Sea, containing 5 km of Miocene bimodal volcanics and volcaniclastic rocks. The Shama basin accumulated a thick fluvio-lacustrine fill in which two distinct volcanic sequences and their deposits can overlap with each other. In addition, complete facies architectures of the Shama volcanics have been recognized providing a complex mixed siliciclastic and volcaniclastic basin infill in the respective basin where volcanism took place. The lower sequence is composed of hyaloclastites, zeolite-bearing bedded tuffs, and bedded accretionary-lapilli-tuffs and an upper sequence, is made up of pumiceous lapilli-tuffs and peperitic breccias capped by basaltic lava flows. The former is interpreted to have been dominated by discrete, phreatomagmatic fall deposits, which are attributed to an overall high eruption rate in a lacustrine setting, followed by a dominantly subaerial pumiceous lapilli tuff deposits and volcaniclastic sediments sited in the upper part of the basin with paleosols and/or fluvial deposits in between the two sequences. These deposits could be related to polygenetic volcanoes and tectonic structures, such as faults and rift-zones. These two sequences display a complex succession of effusive and explosive volcanisms and their reworked deposits, with abundant evidences of magma–water interaction such as peperites for non-explosive magma–water interaction with the lacustrine water-saturated sediment and standing water body in a lake environment. The difference eruption dynamics and fragmentation mechanisms between the two sequences reflect progressive environmental changes from subaqueous or watery to subaerial or dry. Fluvial erosion and deposition completed the evolution of the emergent marginal part of the Shama basin. The Shama basin then experienced volcano growth and degradation that formed the two sequences; NW-SE-trending basement faulting triggered multiple flank collapses and volcanic debris avalanches, and voluminous pumiceous lapilli-tuff eruptions produced a caldera (upper sequence). Lacustrine conditions persisted during the destruction and post-destruction stages of the volcano's evolution, as evidenced by magma–water interactions. Shama basin is a small-volume volcano, similar to tuff rings; however, its magma compositions, complex eruption styles, and inter-eruptive breaks suggest, that it closely resembles a volcanic architecture commonly associated with large, composite volcanoes. The main cause of such complex eruptive behavior resides in the stratigraphic, structural, and hydrogeological characteristics of the substrate above which the volcanoes were emplaced, rather than on the compositional characteristics of the erupting magma, which do not show significant variation among the different deposits.

A. Abdel Motelib; E.A. Khalaf; H. Al-Marzouki

2014-01-01T23:59:59.000Z

310

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

311

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

312

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

313

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)

314

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).

315

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

316

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

317

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

318

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

319

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

320

Infrared polarization measurements of Io in 1986  

SciTech Connect (OSTI)

New polarization measurements of Io were made with two different polarimeters at 3.8 and 4.8 microns. The measurements, at phase angles of about 2 deg, detect the polarization of reflected sunlight at both wavelengths. Only upper limits can be determined for the volcanic activity in 1986, but these limits show that there has been a remarkable decrease in activity, particularly of the Loki volcano, at these short wavelengths. The 1984 data (Goguen and Sinton (1985) are reanalyzed with the new model, which includes polarization of reflected sunlight. The large amount of thermal emission from the Loki volcano in 1984 produced a polarization that was dominant over that of reflected sunlight. 29 references.

Sinton, W.M.; Goguen, J.D.; Nagata, T.; Ellis, H.B. Jr.; Werner, M.

1988-09-01T23:59:59.000Z

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.


321

Study of seismicity around Toba area based on relocation hypocenter result from BMKG catalogue  

SciTech Connect (OSTI)

Toba area has complex tectonic setting attracting many earth scientists to study and understand tectonic and geological process or setting. The area is affected by oblique subduction zone, Renun Sumatran fault sub segment and some volcanoes that are near it. The earthquake catalogue provided by BMKG from April, 2009 to December, 2011 must be relocated firstly to get the precise hypocenter. We used catalogue data of P and S phase or P phase only and double-difference method to relocate the earthquakes. The results show hypocenter position enhancement that can be interpreted tectonically. The earthquakes after relocation relating to the Sumatran fault, subduction zone, volcanoes and seismic activities beneath Toba caldera can be mapped clearly. The relocated hypocenters in this study are very important to provide information for seismic hazard assessment and disaster mitigation study.

Ramdhan, Mohamad [Indonesia's Agency for Meteorology, Climatology and Geophysics (BMKG) Jl. Angkasa 1 No. 2 Kemayoran, Jakarta Pusat, 10720 (Indonesia)] [Indonesia's Agency for Meteorology, Climatology and Geophysics (BMKG) Jl. Angkasa 1 No. 2 Kemayoran, Jakarta Pusat, 10720 (Indonesia); Nugraha, Andri Dian [Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institute of Technology Bandung, Indonesia, Jl. Ganesa 10, Bandung, 40132 (Indonesia)] [Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institute of Technology Bandung, Indonesia, Jl. Ganesa 10, Bandung, 40132 (Indonesia)

2013-09-09T23:59:59.000Z

322

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)

323

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

324

Solution mining and resultant evaporite karst development in Tully Valley, New York  

SciTech Connect (OSTI)

A solution mining operation was conducted in Tully Valley, New York from 1889 to 1988. In excess of 37 million m{sup 3} of halite was removed from 335 to 518 meters below the ground surface. An interbedded sequence of gypsum, shales, limestones, and sandstone overlie the halite beds. This sequence is capped by thick, unconsolidated deposits of till, sand and gravel, and lacustrine clay. As a result of this mining, large void cavities were created, followed by numerous fractures extending upward to the ground surface. The resulting settlement area is in excess of 550 hectares. Within this area sinkholes formed, gaping fractures developed and streams were pirated into the subsurface. Interformational mixing of groundwater now occurs between formerly separate flow systems, providing substantial recharge to deep formations. Some 2 kms downvalley of the brine fields, in a smaller settlement area, and ``volcanos`` effuse weakly saline groundwater that flows into Onondaga Creek. The clay fraction of the effluent gives Onondaga Creek the appearance of chocolate milk for the {approx}26 kms it takes to reach Onondaga Lake. The location of the mud volcanos appears to coincide with an upvalley moving salt front. The number of mud boils and their areal extent has substantially increased since the onset of brining operations. By characterizing the chemistry of groundwaters in local formations and performing mixing calculations based on mass balance, the volcano effluents were shown to represent a mixture of groundwaters from 3--4 formations. Several working hypotheses are advanced and critically evaluated in an effort to define the dynamics necessary for rapid mud volcano growth in a karst setting.

Rubin, P.A. [Oak Ridge National Lab., TN (United States); Ayers, J.C. [Vanderbilt Univ., Nashville, TN (United States); Grady, K.A. [Law Environmental, Inc., Albany, NY (United States)

1991-12-31T23:59:59.000Z

325

Solution mining and resultant evaporite karst development in Tully Valley, New York  

SciTech Connect (OSTI)

A solution mining operation was conducted in Tully Valley, New York from 1889 to 1988. In excess of 37 million m{sup 3} of halite was removed from 335 to 518 meters below the ground surface. An interbedded sequence of gypsum, shales, limestones, and sandstone overlie the halite beds. This sequence is capped by thick, unconsolidated deposits of till, sand and gravel, and lacustrine clay. As a result of this mining, large void cavities were created, followed by numerous fractures extending upward to the ground surface. The resulting settlement area is in excess of 550 hectares. Within this area sinkholes formed, gaping fractures developed and streams were pirated into the subsurface. Interformational mixing of groundwater now occurs between formerly separate flow systems, providing substantial recharge to deep formations. Some 2 kms downvalley of the brine fields, in a smaller settlement area, and volcanos'' effuse weakly saline groundwater that flows into Onondaga Creek. The clay fraction of the effluent gives Onondaga Creek the appearance of chocolate milk for the {approx}26 kms it takes to reach Onondaga Lake. The location of the mud volcanos appears to coincide with an upvalley moving salt front. The number of mud boils and their areal extent has substantially increased since the onset of brining operations. By characterizing the chemistry of groundwaters in local formations and performing mixing calculations based on mass balance, the volcano effluents were shown to represent a mixture of groundwaters from 3--4 formations. Several working hypotheses are advanced and critically evaluated in an effort to define the dynamics necessary for rapid mud volcano growth in a karst setting.

Rubin, P.A. (Oak Ridge National Lab., TN (United States)); Ayers, J.C. (Vanderbilt Univ., Nashville, TN (United States)); Grady, K.A. (Law Environmental, Inc., Albany, NY (United States))

1991-01-01T23:59:59.000Z

326

First Commercial Success for Enhanced Geothermal Systems (EGS) Spells Exponential Growth for Geothermal Energy  

Broader source: Energy.gov [DOE]

The Obama Administration's all-of-the-above energy strategy took a leap forward today with the Energy Department's announcement recognizing the nation's first commercial enhanced geothermal system (EGS) project to supply electricity to the grid. This landmark accomplishment follows two other major DOE-funded technical achievements focused on demonstrating the commercial viability of EGS: The Calpine EGS demonstration at The Geysers in Middletown, California and the AltaRock project at Newberry Volcano near Bend, Oregon.

327

General overview of geophysical studies at Cerro Prieto  

SciTech Connect (OSTI)

Geophysical investigations by the CFE in the Mexicali Valley near the Cerro Prieto volcano began nearly 20 years ago. Initially, gravity and seismic refraction methods were used for structural information related to faults and basement configuration. Supplemented by ground magnetic and gravity measurements, the resistivity data are being interpreted to yield a detailed picture of the structure concealed by valley fill and to identify promising areas for future exploration. 18 refs.

Goldstein, N.E.; Razo, A.M.

1980-01-01T23:59:59.000Z

328

Modeling volcanic ash dispersal  

ScienceCinema (OSTI)

Explosive volcanic eruptions inject into the atmosphere large amounts of volcanic material (ash, blocks and lapilli). Blocks and larger lapilli follow ballistic and non-ballistic trajectories and fall rapidly close to the volcano. In contrast, very fine ashes can remain entrapped in the atmosphere for months to years, and may affect the global climate in the case of large eruptions. Particles having sizes between these two end-members remain airborne from hours to days and can cover wide areas downwind. Such volcanic fallout entails a serious threat to aircraft safety and can create many undesirable effects to the communities located around the volcano. The assessment of volcanic fallout hazard is an important scientific, economic, and political issue, especially in densely populated areas. From a scientific point of view, considerable progress has been made during the last two decades through the use of increasingly powerful computational models and capabilities. Nowadays, models are used to quantify hazard scenarios and/or to give short-term forecasts during emergency situations. This talk will be focused on the main aspects related to modeling volcanic ash dispersal and fallout with application to the well known problem created by the Eyjafjöll volcano in Iceland. Moreover, a short description of the main volcanic monitoring techniques is presented.

None

2011-10-06T23:59:59.000Z

329

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

SciTech Connect (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

330

Jasper Seamount: Seven million years of volcanism  

SciTech Connect (OSTI)

Jasper Seamount is a young, mid-sized (690 km{sup 3}) oceanic intraplate volcano located about 500 km west-southwest of San Diego, California. Reliable {sup 40}Ar/{sup 39}Ar age data were obtained for several milligram-sized samples of 4 to 10 Ma plagioclase by using a defocused laser beam to clean the samples before fusion. Gee and Staudigel suggested that Jasper Seamount consists of a transitional to tholeiitic shield volcano formed by flank transitional series lavas, overlain by flank alkalic series lavas and summit alkalic series lavas. Twenty-nine individual {sup 40}Ar/{sup 39}Ar laser fusion analyses on nine samples confirm the stratigraphy: 10.3-10.0 Ma for the flank transitonal series, 8.7-7.5 Ma for the flank alkalic series, and 4.8-4.1 Ma for the summit alkalic series. The alkalinity of the lavas clearly increases with time, and there appear to be 1 to 3 m.y. hiatuses between each series. The age data are consistent with the complex magnetic anomaly of Jasper; however the dominant reversed polarity inferred from the anomaly suggests that most of the seamount formed at ca. 11 Ma, prior to the onset of Chron C5N. The duration of volcanism of Jasper Seamount is slightly longer than the duration of volcanism at Hawaiian volcanoes, suggesting that individual age data from seamounts may constrain the age of a seamount only to within about 7 m.y. unless the stage of volcanism can be unambiguously determined. Extrapolating from the results of our study, similar precision in age determinations should be possible on 50 mg of 1 Ma plagioclase from mid-ocean ridge basalt, opening new possibilities in the geochronology of young, low-potassium volcanic rocks.

Pringle, M.S. (Geological Survey, Menlo Park, California (USA)); Staudigel, H.; Gee, J. (Scripps Institution of Oceanography, LaJolla, California (USA))

1991-04-01T23:59:59.000Z

331

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

332

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

333

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

334

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

335

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

336

Oil history, potential converge in Azerbaijan  

SciTech Connect (OSTI)

Azerbaijan, the oldest known oil producing region in the world, still holds great potential for new discoveries and increased production. A multi-billion dollar production sharing agreement was recently signed with a consortium of primarily western oil companies to develop three oil fields in the Caspian Sea. Soon, Azerbaijan will offer new exploration acreage both offshore and onshore. This paper describes the history of oil production in Azerbaijan, offshore developments, tectonics, stratigraphy, petroleum traps, mud volcanoes, and short summaries of several oil producing areas. Current production is about 9 million tons/yr of oil and 7 billion cu m/yr of natural gas.

Narimanov, A.A. [State Oil Co. of Azerbaijan, Baku (Azerbaijan); Palaz, I. [Amoco Production Co., Houston, TX (United States)

1995-05-22T23:59:59.000Z

337

Mechanism for Oxygen Reduction Reaction on Pt3Ni Alloy Fuel Cell Cathode  

Science Journals Connector (OSTI)

The efficiency of the oxygen reduction reaction (ORR), 4H+ + 4e– + O2 ? 2H2O, at the cathode of a polymer electrolyte membrane fuel cell (PEMFC) is a critical issue for commercial application of this type of fuel cells. ... This agrees with the volcano-like trend for ORR catalysts,(7, 31, 32) when the activity first increases and then decreases as the catalyst d-band center shifts downward. ... Improved Non-Pt Alloys for the Oxygen Reduction Reaction at Fuel Cell Cathodes Predicted from Quantum Mechanics ...

Yao Sha; Ted H. Yu; Boris V. Merinov; Pezhman Shirvanian; William A. Goddard; III

2012-09-04T23:59:59.000Z

338

Io - Are vapor explosions responsible for the 5-micron outbursts  

SciTech Connect (OSTI)

It is proposed that a vapor explosion of a submerged pool of liquid sulfur will remove the crust overlying an area of about 50-km diam. Thermal radiation from the exposed liquid sulfur pool with a surface temperature of 600 K is then presumed to be responsible for the 5-micron outbursts that have been observed. The explosive volcanoes are expected to leave black sulfur calderas, which are, indeed, found on the surface. The 5-micron outburst observed by Sinton (1980), on June 11, 1979 (UT), is identified with a new caldera found on Voyager 2 photographs but which had not been present on Voyager 1 pictures.

Sinton, W.M.

1980-01-01T23:59:59.000Z

339

An analysis of geothermal resource development on Unalaska Island, Alaska  

SciTech Connect (OSTI)

A rapid expansion in the seafood industry and projected oil, gas and mining developments have resulted in a shortage of power on Unalaska Island. Currently, all power is supplied by small diesel generators at a cost of 340 mills/kwh for the local utility system. Available data indicate the potential for a significant high temperature geothermal resource on Makushin Volcano, west of the town of Unalaska. A summary of the considerations affecting the development of the Makushin resource to supply power to Unalaska is presented. A preliminary economic analysis of various resource and development assumptions indicated that geothermal power can be competitive with diesel power even though capital investment is high.

Spencer, S.G.; Chapman-Riggsbee, W.; Long, G.A.

1982-10-01T23:59:59.000Z

340

Geographic variation and distribution of the genus Tomodactylus in Mexico  

E-Print Network [OSTI]

of Volcan Paricutin~ the most recent active volcano in Mexico. Patscuaro, 101 31' ~18 $1'~ 8, 800 ft, ~ Lecation 28 Pine-oak Forest. A large town surrounded by low hills on the southern edge of Lago Patscuaro. Large areas of lava deposits lie... 800 t, ( fL tl 38. Pine-oak Forest, A large suburb of Mexico City. MORE LO8 ~AL . $015' ~18 44'; 3?$00 ft. ; L tl 50. A Tropical 8crub. A snail town surrounded by rell- ing hills and irrigated valleys. The eager crops are rice, oorn, and bananas...

Dixon, James Ray

2012-06-07T23:59:59.000Z

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.


341

Regulation of E2F-1 gene expression in human breast cancer cells  

E-Print Network [OSTI]

until they were banned in 1972 (35). Dioxins are also organochlorines that were found as contaminants in herbicides. Dioxin is the general name given to 210 organic compounds containing carbon, oxygen and hydrogen with one to eight chlorine atoms.... Only 17 of the 210 dioxins are known to be toxic. Dioxins can be created 15 naturally in trace quantities (e.g. volcanoes). They can also be created as unwanted by-products in numerous combustion processes (e.g. forest fires, cigarettes, bonfires...

Ngwenya, Sharon Khethiwe

2005-08-29T23:59:59.000Z

342

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

343

Spatial data analysis for exploration of regional scale geothermal resources  

Science Journals Connector (OSTI)

Abstract Defining a comprehensive conceptual model of the resources sought is one of the most important steps in geothermal potential mapping. In this study, Fry analysis as a spatial distribution method and 5% well existence, distance distribution, weights of evidence (WofE), and evidential belief function (EBFs) methods as spatial association methods were applied comparatively to known geothermal occurrences, and to publicly-available regional-scale geoscience data in Akita and Iwate provinces within the Tohoku volcanic arc, in northern Japan. Fry analysis and rose diagrams revealed similar directional patterns of geothermal wells and volcanoes, NNW-, NNE-, NE-trending faults, hotsprings and fumaroles. Among the spatial association methods, WofE defined a conceptual model correspondent with the real world situations, approved with the aid of expert opinion. The results of the spatial association analyses quantitatively indicated that the known geothermal occurrences are strongly spatially-associated with geological features such as volcanoes, craters, NNW-, NNE-, NE-direction faults and geochemical features such as hotsprings, hydrothermal alteration zones and fumaroles. Geophysical data contains temperature gradients over 100 °C/km and heat flow over 100 mW/m2. In general, geochemical and geophysical data were better evidence layers than geological data for exploring geothermal resources. The spatial analyses of the case study area suggested that quantitative knowledge from hydrothermal geothermal resources was significantly useful for further exploration and for geothermal potential mapping in the case study region. The results can also be extended to the regions with nearly similar characteristics.

Majid Kiavarz Moghaddam; Younes Noorollahi; Farhad Samadzadegan; Mohammad Ali Sharifi; Ryuichi Itoi

2013-01-01T23:59:59.000Z

344

Dynamics of an end-on collision, interpreted from SeaMARC II swath mapping and migrated seismic reflection data on north margin of Panama  

SciTech Connect (OSTI)

The authors have imaged nearly the entire North Panama thrust belt (NPTB) to determine the dynamics of the Panama arc colliding end-on with South America. Observations support a simple flexural beam model in which eastward collision of the arc against the continent is transformed into northward relative motion of the NPTB. Fold axes and thrust faults within the NPTB show remarkable uniformity in strike (075/sup 0/), changing only on the east margin across a major fault and on the west margin across a sharp flexure. The belt increases in width (and presumably convergence) eastward, as predicted by the beam model. Displacement along the Uraba fault zone separated a thin sliver of the NPTB, and two earthquake focal mechanisms on the fault show right-oblique slip. Vergence of thrust sheets within the accretionary wedge is dominantly landward in much of the central part of the thrust belt, indicating low basal shear stresses and high fluid pressures along the decollement. Mud volcanoes within the accretionary wedge attest to elevated fluid pressures. Because of an exceptionally well-developed and widespread gas hydrate layer, they suggest that pore fluids are a mixture of water and methane. However, near the central part of the thrust belt, a concentrated zone of mud volcanoes has breached the crests of seaward-verging anticlines. They propose that the zone of anomalous seaward-verging thrust sheets results from widespread release of pore fluids from the decollement, leading to increased basal friction.

Silver, E.A.; Reed, D.L.; Heil, D.H.; Tagudin, J.

1986-07-01T23:59:59.000Z

345

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

SciTech Connect (OSTI)

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

346

Geothermal energy resource investigations at Mt. Spurr, Alaska  

SciTech Connect (OSTI)

Spurr volcano is a composite Quaternary cone of largely andesitic composition located on the west side of Cook Inlet about 80 miles west of Anchorage and about 40 miles from the Beluga electrical transmission line. Geologic mapping (Plate 1-1) shows that the present summit depression was produced by a Mt. St. Helens-type sector collapse, rather than by a caldera collapse. Geochronologic and previous tephrachronologic studies show that there has been an active magmatic system at Spurr volcano during the late Pleistocene-to-Holocene time interval that is of critical interest for geothermal energy resource assessment. Major effort was devoted to geochemical and geophysical surveys of the accessible area south of Mt. Spurr, in addition to geologic mapping and geochronologic studies. Many coincident mercury and helium anomalies were found, suggesting the presence of geothermal systems at depth. Extremely large electrical self-potential anomalies were also found, together with extensive zones of low resistivity discovered by our controlled-source audiomagnetotelluric survey. The juxtaposition of all of these different types of anomalies at certain areas on the south slope of Crater Peak indicates the presence of a geothermal system which should be accessible by drilling to about 2000 ft depth. It is also evident that there is a strong volcanic hazard to be evaluated in considering any development on the south side of Mt. Spurr. This hazardous situation may require angle drilling of production wells from safer areas and placement of power generation facilities at a considerable distance from hazardous areas.

Turner, D.L.; Wescott, E.M. (eds.)

1986-12-01T23:59:59.000Z

347

Crustal structure of northern Gran Canaria, Canary Islands, deduced from active seismic tomography  

Science Journals Connector (OSTI)

Seismic P-wave travel times collected during METEOR cruise M24 are inverted to derive a three-dimensional model of the P-wave velocity structure of the northern part of Gran Canaria, Canary Islands. The data consist of 6689 P-wave travel times from 1487 offshore air-gun shots which were recorded by both land-based seismometers and ocean bottom hydrophones. The crustal structure is well imaged by the data set as demonstrated by analysis of the resolution and tests with synthetic data. The volcanic island is characterized by generally high P-wave velocities (>5.5 km/s) and a heterogeneous structure with large lateral velocity variations. High P-wave velocities are found around the centers of the Miocene shield volcanoes in the vicinity of Agüimes, San Nicolas, and Agaete as well as the center of the Pliocene Roque Nublo volcano. The velocity structure suggests a high percentage of dense intrusive rocks. Some of the intrusive rocks were emplaced during the eruption of >1000 km3 of Miocene felsic magmas following the basaltic shield phase. The velocity structure beneath La Isleta peninsula and its submarine continuation is interpreted as a volcanic rift zone with abundant dikes. The velocities decrease to Gran Canaria is found at a depth of ?15 km. The structure of Gran Canaria and the adjacent ocean basin is thought to be the result of a diffuse mantle upwelling under a slowly moving plate.

Sebastian Krastel; Hans-Ulrich Schmincke

2002-01-01T23:59:59.000Z

348

LANL Mobile News  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

349

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

350

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

351

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

352

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

353

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

354

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

355

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"

356

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

357

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

358

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"

359

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

360

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

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

CX-002955: Categorical Exclusion Determination | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

362

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

363

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

364

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,

365

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

366

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

367

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

368

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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.)

369

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

370

Page not found | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

371

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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,

372

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

373

Why Is Pt So Unique A Chemical Physics Approach  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

374

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

375

NETL: Carbon Dioxide 101 FAQs  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

376

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

377

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,

378

Connections: November 2013  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

379

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

380

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"

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381

Accommodations  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

382

CX-005875: Categorical Exclusion Determination | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

383

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

384

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,

385

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.

386

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"

387

Solar energy integrated at Hawaiian military housing | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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.

388

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

389

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

390

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

391

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.

392

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

393

PowerPoint Presentation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

394

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,

395

Science Summary  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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

396

Viscosity Problems in Igneous Rocks  

Science Journals Connector (OSTI)

The earth's magma a siliceous melt which is believed to underlie the entire solid crust of the earth is in all probability a highly viscous liquid. Wherever molten lava is observed in motion either in craters of volcanoes (Kilauea Mauna Loa Hawaii) or as disastrous flows which descend volcanic mountains (Vesuvius Mount Aetna etc.) or in the vicinity of volcanic fissures (Laki Eldgja rift Iceland) it behaves like a liquid of appreciable viscosity; the degree of viscosity however varies depending on the proportion of admixed gases and water vapor and the chemical composition of the lava. Lavas rich in silica are highly viscous (rhyolite dacite) while those rich in iron and magnesium (basalt andesite) are more fluid. The viscosity of every lava flow increases until the melt slowly freezes because of the chilling effect of the surface temperatures on the earth.

Robert Balk

1932-01-01T23:59:59.000Z

397

Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29  

SciTech Connect (OSTI)

As part of the planning for stimulation of the Newberry Volcano Enhanced Geothermal Systems (EGS) Demonstration project in Oregon, a high-resolution borehole televiewer (BHTV) log was acquired using the ALT ABI85 BHTV tool in the slightly deviated NWG 55-29 well. The image log reveals an extensive network of fractures in a conjugate set striking approximately N-S and dipping 50���° that are well oriented for normal slip and are consistent with surface-breaking regional normal faults in the vicinity. Similarly, breakouts indicate a consistent minimum horizontal stress, Shmin, azimuth of 092.3���±17.3���°. In conjunction with a suite of geophysical logs, a model of the stress magnitudes constrained by the width of breakouts at depth and a model of rock strength independently indicates a predominantly normal faulting stress regime.

Nicholas C. Davatzes, Stephen H. Hickman

2011-10-23T23:59:59.000Z

398

Hydrochemical features of a geothermal test well iin a volcanic caldera, MT. Pinatubo, Phillipines  

SciTech Connect (OSTI)

Mt. Pinatubo is one of several recent-age volcanoes along the west Luzon volcanic arc. A fumarole near the suminit emits gases with magmatic characteristics. Several thermal springs on the east and west flanks yield various fluid typos, including neutral chloride and bicarbonate. Three wellbores probed the Mt. Pinatubo caldera from elevations of +1230 through -1600 mRSL. Trajectories may be described as: central, crossing a boundary wall from the inside, and skirting a wall [probably] on the inside. Brine discharges indicate severe evapo-concentration effects accompanied by other phenomena. Severity of evapo-concentration indicates low fluid mobility near the wellbores. Large variations for ratios of component concentrations were observed, indicating negligible natural circulation (mixing). Implications about fluid movements and heat transfer processes are explored. Three components of steam can be quantified and all are significant: separate entry, adiabatic boiling, and boiling by rock heat.

Michels, D.E.; Clemente, V.C.; Ramos, M.N.

1991-01-01T23:59:59.000Z

399

Acoustic emission associated with the bursting of a gas bubble at the free surface of a non-newtonian fluid  

E-Print Network [OSTI]

We report experimental measurements of the acoustic emission associated with the bursting of a gas bubble at the free surface of a non-newtonian fluid. On account of the viscoelastic properties of the fluid, the bubble is generally elongated. The associated frequency and duration of the acoustic signal are discussed with regard to the shape of the bubble and successfully accounted for by a simple linear model. The acoustic energy exhibits a high sensitivity to the dynamics of the thin film bursting, which demonstrates that, in practice, it is barely possible to deduce from the acoustic measurements the total amount of energy released by the event. Our experimental findings provide clues for the understanding of the signals from either volcanoes or foams, where one observes respectively, the bursting of giant bubbles at the free surface of lava and bubble bursting avalanches.

Thibaut Divoux; Valérie Vidal; Francisco Melo; Jean-Christophe Géminard

2008-07-01T23:59:59.000Z

400

The Cloud Project Climate Research with Accelerators  

E-Print Network [OSTI]

The current understanding of climate change in the in- dustrial age is that it is predominantly caused by anthro- pogenic greenhouse gases, with relatively small natural contributions due to solar irradiance and volcanoes. How- ever, palaeoclimatic reconstructions show that the climate has frequently varied on 100-year time scales during the Holocene (last 10 kyr) by amounts comparable to the present warming—and yet the mechanism is not under- stood. Estimated changes of solar irradiance on these time scales are too small to account for the climate observations. This raises the question of whether cosmic rays, which are modulated by the solar wind, may be directly affect- ing the climate, providing an effective indirect solar forcing mechanism. Indeed recent satellite observations—although disputed—suggest that cosmic rays may affect clouds un- der certain conditions. However, given the many sources of variability in the atmosphere and the lack of control of the cosmic ray flux, demonstrating overall ca...

Kirkby, Jasper

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.


401

Geo-neutrinos: recent developments  

E-Print Network [OSTI]

Radiogenic heating is a key component of the energy balance and thermal evolution of the Earth. It contributes to mantle convection, plate tectonics, volcanoes, and mountain building. Geo-neutrino observations estimate the present radiogenic power of our planet. This estimate depends on the quantity and distribution of heat-producing elements in various Earth reservoirs. Of particular geological importance is radiogenic heating in the mantle. This quantity informs the origin and thermal evolution of our planet. Here we present: currently reported geo-neutrino observations; estimates of the mantle geo-neutrino signal, mantle radiogenic heating, and mantle cooling; a comparison of chemical Earth model predictions of the mantle geo-neutrino signal and mantle radiogenic heating; a brief discussion of radiogenic heating in the core, including calculations of geo-neutrino signals per pW/kg; and finally a discussion of observational strategy.

Dye, Steve

2014-01-01T23:59:59.000Z

402

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  

SciTech Connect (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

403

Center for Volcanic and Tectonic Studies: 1992--1993 annual report  

SciTech Connect (OSTI)

The annual report of the Center for Volcanic Studies (CVTS) contains a series of papers, reprints and a Master of Science thesis that review the progress made by the CVTS between October 1, 1992 and February 1, 1994. During this period CVTS staff focused on several topics that have direct relevance to volcanic hazards related to the proposed high-level nuclear waste repository at Yucca Mountain, Nevada. These topics include: (1) polygenetic/polycyclic volcanism in Crater Flat, Nevada; (2) the role of the mantle during crustal extension; (3) the detailed geology of Crater Flat, Nevada; (4) Pliocene volcanoes in the Reveille Range, south-central Nevada; (5) estimating the probability of disruption of the proposed repository by volcanic eruptions. This topic is being studied by Dr. C.H. Ho at UNLV. The report contains copies of these individual papers as they were presented in various conference proceedings.

NONE

1994-12-31T23:59:59.000Z

404

Ophiolites of the deep-sea trenches of the western Pacific  

SciTech Connect (OSTI)

Igneous and metamorphic rocks of ophiolites are widespread in the basement of the Izu-Bonin, Volcano, Mariana, Philippine, Yap, Palau, New Hebrides, West Melanesian, Tonga, and Mussau trenches. Ophiolite in the trenches includes (1) metamorphic rocks ranging from low-T and low P to high-T and moderate P; (2) serpentinites after harzburgite; (3) ultramafic-mafic layered series; (4) tholeiitic basalts, dolerites, and their metamorphosed varieties; and (5) rocks of the boninitic series. Two geodynamic stages could be distinguished in the formation of the ophiolites of the Western Pacific. At the rifting stage, mantle diapir ascended during rifting and magmatic series were formed. In this period, rocks underwent intense low-temperature metasomatic alterations in the zones of heated seawater circulation. At the compression stage (subduction zone) regional pressure metamorphism of the ophiolites superimposed on the low-temperature metasomatic processes.

Chudaev, O.

1990-06-01T23:59:59.000Z

405

Magnetic field control of the intraband optical absorption in two-dimensional quantum rings  

SciTech Connect (OSTI)

Linear and nonlinear optical absorption coefficients of the two-dimensional semiconductor ring in the perpendicular magnetic field B are calculated within independent electron approximation. Characteristic feature of the energy spectrum are crossings of the levels with adjacent nonpositive magnetic quantum numbers as the intensity B changes. It is shown that the absorption coefficient of the associated optical transition is drastically decreased at the fields corresponding to the crossing. Proposed model of the Volcano disc allows to get simple mathematical analytical results, which provide clear physical interpretation. An interplay between positive linear and intensity-dependent negative cubic absorption coefficients is discussed; in particular, critical light intensity at which additional resonances appear in the total absorption dependence on the light frequency is calculated as a function of the magnetic field and levels' broadening.

Olendski, O., E-mail: oolendski@ksu.edu.sa [King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box 2454, Riyadh 11451 (Saudi Arabia); Barakat, T., E-mail: tbarakat@ksu.edu.sa [Department of Physics, King Saud University, P.O. Box 2454, Riyadh 11451 (Saudi Arabia)

2014-02-28T23:59:59.000Z

406

A visit to Mount St. Helens  

SciTech Connect (OSTI)

The May 18, 1980, eruption displaced roughly 2.6 km[sup 3] of rock and devastated more than 500 km[sup 2] of forest, mostly to the north of the mountain. Trees within 10--15 km of the mountain peak were burned and uprooted. Beyond that, high winds and flying debris created a blowdown zone. Up to 150 m of rock and ice covered some areas. Accumulations of ash were measured as much as 330 km from the volcano. Mud flows choked nearby rivers and streams. Two years later, the US Congress established the 44,000-hectare Mount St. Helens National Volcanic Monument. The Act essentially directed the USDA Forest Service to allow the area to recover naturally. The paper reviews what changes the ecosystem has been going through since the eruption and the lessons learned that suggest some new resource management techniques.

Meadows, D.G.

1994-04-01T23:59:59.000Z

407

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

408

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

409

Science Energy Literacy and Activities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

410

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"

411

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

412

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 +, ...

413

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

414

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

415

Page not found | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

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

416

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

417

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

418

L.m, Libby and W.F. Libby  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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

419

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

420

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

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

Origin and formation of neck in a basin landform: Examples from the Camargo volcanic field, Chihuahua (México)  

Science Journals Connector (OSTI)

The term “neck in a basin” (NIB) landform is proposed for volcanic structures characterized by nearly circular to elliptical open basins, located near the headwater of small streams or drainages, which contain small volcanic necks and/or erosion remnants of one (or more) cinder cones. NIB landforms are typically 400-1000 m in diameter and 30-100 m deep and are invariably surrounded by steep walls cut into one or more basaltic lava flows. NIB landforms lack evidence for a primary volcanogenic origin through either collapse or youthful eruptive activity. In the Pliocene portion (4 – 2 Ma) of the Plio-Quaternary Camargo volcanic field of Chihuahua (México), they are relatively numerous and are best developed at the margins of a gently sloping (3-5°) basaltic lava plateau and near major fault scarps. Mature NIB landforms have ring-like circular drainage patterns and central elevations marked by small volcanic necks and associated radial dikes intruded into basaltic scoria-fall and /or agglutinate deposits. We interpret NIB landforms to be erosional in origin. They develop where a cinder cone is surrounded by one or more sheet-like lava flows from one or more separate subsequent vents. Once eruptive activity ceases at the younger volcano(es), fluvial erosion gradually produces a ring-like drainage pattern along the contact between the lava and the older cinder cone. As a response to a marked contrast in resistance to erosion between lava flows and unconsolidated or poorly lithified pyroclastic deposits, the older cinder cone is preferentially eroded. In this manner, a ring-shaped, steep sided erosional basin, preformed by the scoria cone, is produced; eventually fluvial erosion exposes the central neck and dikes. The volume, relief, and age of the volcanic field are key factors in the formation and preservation of a NIB landform. They form in volcanic fields where lava emissions are sufficiently vigorous to engulf earlier cinder cones. Relief and associated high rates of fluvial erosion play an important role in NIB development, as demonstrated by their locations in the Camargo volcanic field. Fully developed NIB landforms are not found in Quaternary volcanic fields, probably because erosion has not had sufficient time to generate their characteristics features. NIB landforms are also absent in Miocene fields, because erosion has proceeded too far, and thus has completely removed any NIB landform that may once have existed. The Camargo volcanic field is the only major area of Pliocene intraplate eruptive activity in northern México, and the only place where NIB landforms are relatively abundant.

José Jorge Aranda-Gómez; Todd B. Housh; James F. Luhr; Cristina Noyola-Medrano; Marco Antonio Rojas-Beltrán

2010-01-01T23:59:59.000Z

422

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

SciTech Connect (OSTI)

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

423

LANL | Solid Earth Geophysics | EES-17  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (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.

424

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 +

425

Lithospheric Velocity Structure of the Anatolain plateau-Caucasus-Caspian Regions  

SciTech Connect (OSTI)

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

426

Experimental study of boninite genesis  

SciTech Connect (OSTI)

Seven boninitic compositions from 4 localities, i.e., Troodos (arakapas and Margi), Cyprus (2), Setouchi volcano belt, Japan (2), Bonin Island (1) and Cape Vogel, Papua New Guinea (2), ranging from high-CaO, low-SiO/sub 2/ to low-CaO, high SiO/sub 2/ and showing characteristics of primitive magmas, have been studied in gas-mixing furnaces at 1 atm. and in IHPV experiments between 1 and 10 kbar. Experimental starting materials were 9-element gels with major element compositions equivalent to the natural rocks. At 1 atm. Troodos (Arakapas) and the two Japan samples show opx/clino-en. with olivine in a near liquidus temperature interval (1210-1275 C), whereas the Troodos (Margi), the Bonin and the two Cape Vogel samples only give opx/clino-en. with liquidus temperatures between 1250 and 1380. Two kinds of IHPV experiments were done; firstly a study of near liquidus phase relations and secondly, reequilibration of starting compositions with natural harzburgite capsule linings, both at variable P, T and X/sub water/ conditions. Magma compositions can be explained in terms of P, T, X/sub water/ conditions and extend of melting of a variably refractory mantle source.

Van Der Laan, S.R.; Flower, M.F.J.; Koster Van Groos, A.F.

1985-01-01T23:59:59.000Z

427

Preliminary report on shallow research drilling in the Salton Sea region  

SciTech Connect (OSTI)

During two shallow thermal drilling programs, thermal measurements were obtained in 56 shallow (76.2 m) and one intermediate (457.3 m) depth holes located both onshore and offshore along the southern margin of the Salton Sea in the Imperial Valley, California. These data complete the surficial coverage of the thermal anomaly, revealing the shape and lateral extent of the hydrothermal system. The thermal data show the region of high thermal gradients to extend only a short distance offshore to the north of the Quaternary volcanic domes which are exposed along the southern shore of the Salton Sea. The central thermal anomaly has an arcuate shape, about 4 km wide and 12 km long. Across the center of the anomaly, the transition zone between locations exhibiting high thermal gradients and those exhibiting regional thermal gradients is quite narrow. Thermal gradients rise from near regional (0.09/degree/C/m) to extreme (0.83/degree/C/m) in only 2.4 km. The heat flow in the central part of the anomaly is greater than 600 mW/m/sup 2/ and in some areas exceeds 1200 mW/m/sup 2/. The shape of the thermal anomaly is asymmetric with respect to the line of volcanoes previously thought to represent the center of the field, with its center line offset south of the volcanic buttes. There is no broad thermal anomaly associated with the magnetic high that extends offshore to the northeast from the volcanic domes.

Newmark, R.L.; Kasameyer, P.W.; Younker, L.W.

1988-01-14T23:59:59.000Z

428

Thermal springs list for the United States; National Oceanic and Atmospheric Administration Key to Geophysical Records Documentation No. 12  

SciTech Connect (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

429

A mini review on the chemistry and catalysis of the water gas shift reaction  

E-Print Network [OSTI]

Water gas shift (WGS) reaction is a chemical reaction in which carbon monoxide reacts with water vapor to form carbon dioxide and hydrogen. It is an important reaction industrially used in conjunction with steam reforming of hydrocarbons for the production of high purity hydrogen. Grenoble et al examined the roles of both active metals and metal oxide support on the kinetics of the WGS reaction. They found out that the turn over numbers of various Al2O3 supported transition metals decreased in the trend of Cu, Re, Co, Ru, Ni, Pt, Os, Au, Fe, Pd, Rh, and Ir, which corresponds nicely to the observed volcano shaped correlation between catalytic activities and respective CO adsorption heat. This is a strong indication that CO gets activated on the metal surface during the reaction and different metals have different activation energies. The authors also observed that the turn over number of Pt/Al2O3 was one order of magnitude higher than that of Pt/SiO2, indicating a strong support effect, which the authors ascri...

Zhao, Zhun

2014-01-01T23:59:59.000Z

430

The chemical composition of the cosmic radiation around the ankle and the related spectral indices  

E-Print Network [OSTI]

Some recent measurements of the chemical composition of the cosmic radiation indicate that at the energy of 3 x 10 **18 eV, around the ankle, light cosmic ions dominate the spectrum as it occurs in the preknee energy region. Taking advantage of a recent theory of cosmic radiation which provides a quantitative explanation of the knee, the second knee and the ankle, the chemical composition of cosmic radiation is explicitly calculated giving individual ion spectra and ion fractions from 10 ** 12 eV to 5 x 10 ** 19 eV. The calculation assumes two components of the cosmic radiation feeding the ion flux at Earth: one originated in the disc volume and another one, called extradisc component, which from the disc boundaries traverses the Galaxy reaching the solar system. Data above 10 ** 17 eV collected during half century of experimentation by Auger, HiRes, Agasa, Akeno, Fly' s Eye, Yakutsk, Haverah Park and Volcano Ranch experiments are reviewed, examined and compared with the theoretical . The comparison between c...

Codino, Antonio

2009-01-01T23:59:59.000Z

431

Hydrogen production by steam reforming of liquefied natural gas (LNG) over mesoporous Ni–La–Al2O3 aerogel catalysts: Effect of La content  

Science Journals Connector (OSTI)

Mesoporous Ni–La–Al2O3 aerogel catalysts (denoted as (40-x)NixLa) with different lanthanum content (x) were prepared by a single-step sol-gel method and a subsequent CO2 supercritical drying method. The effect of lanthanum content on the physicochemical properties and catalytic performance of mesoporous (40-x)NixLa catalysts in the steam reforming of liquefied natural gas (LNG) was investigated. Physicochemical properties of (40-x)NixLa catalysts were strongly influenced by lanthanum content. Dispersion and reducibility of nickel aluminate phase in the (40-x)NixLa catalysts increased with increasing lanthanum content. Small amount of lanthanum addition was effective for dispersion of metallic nickel in the (40-x)NixLa catalysts, but large amount of lanthanum addition was not favorable for nickel dispersion due to the blocking of active sites. In the steam reforming of LNG, both LNG conversion and hydrogen yield showed volcano-shaped curves with respect to lanthanum content. Average nickel diameter of (40-x)NixLa catalysts was well correlated with LNG conversion and hydrogen yield over the catalysts. Among the catalysts tested, 36Ni4La (36 wt% Ni and 4 wt% La) catalyst with the smallest average nickel diameter exhibited the best catalytic performance and the strongest resistance toward carbon deposition in the steam reforming of LNG.

Yongju Bang; Jeong Gil Seo; In Kyu Song

2011-01-01T23:59:59.000Z

432

Effect of Ni/Al atomic ratio of mesoporous Ni–Al2O3 aerogel catalysts on their catalytic activity for hydrogen production by steam reforming of liquefied natural gas (LNG)  

Science Journals Connector (OSTI)

Mesoporous Ni–Al2O3 (XNiAE) aerogel catalysts with different Ni/Al atomic ratio (X) were prepared by a single-step sol-gel method and a subsequent CO2 supercritical drying method. The effect of Ni/Al atomic ratio of mesoporous \\{XNiAE\\} aerogel catalysts on their physicochemical properties and catalytic activity for steam reforming of liquefied natural gas (LNG) was investigated. Textural properties and chemical properties of \\{XNiAE\\} catalysts were strongly influenced by Ni/Al atomic ratio. Nickel species were highly dispersed on the surface of \\{XNiAE\\} catalysts through the formation of surface nickel aluminate phase. In the steam reforming of LNG, both LNG conversion and hydrogen yield showed volcano-shaped curves with respect to Ni/Al atomic ratio. Average nickel diameter of \\{XNiAl\\} catalysts was well correlated with LNG conversion and hydrogen yield over the catalysts. Among the catalysts tested, 0.35NiAE (Ni/Al = 0.35) catalyst with the smallest average nickel diameter showed the best catalytic performance. The highest surface area, the largest pore volume, the largest average pore size, and the highest reducibility of 0.35NiAE catalyst were also partly responsible for its superior catalytic performance.

Jeong Gil Seo; Min Hye Youn; Yongju Bang; In Kyu Song

2010-01-01T23:59:59.000Z

433

Major results of geophysical investigations at Yucca Mountain and vicinity, southern Nevada  

SciTech Connect (OSTI)

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

434

Observations of long period earthquakes accompanying hydraulic fracturing  

SciTech Connect (OSTI)

Waveforms of most seismic events accompanying hydraulic fracturing have been reported to contain clear P and S waves and have fault plane solutions consistent with shear displacement across a fault. This observation is surprising since classical hydraulic fracturing theory predicts the creation of a tensile opening of a cavity in response to fluid pressure. Very small long period events, similar to long period earthquakes observed at volcanoes, were found to occur during four hydraulic fracturing experiments carried out at Fenton Hill, New Mexico. Since the long period earthquakes occur in the same region as the shear type events, it is concluded that the unusual character of the long period earthquake waveforms is due to a source effect and not a path effect. The occurrence of long period earthquakes during hydraulic fracturing could indicate tensile fracturing. Many waveforms of these events are identical, which implies that these events represent repeated activation of a given source. A proposed source for 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 each crack. From the frequencies at which spectral peaks occur, crack lengths are estimated to be between 3 and 20m.

Bame, D.; Fehler, M.

1986-02-01T23:59:59.000Z

435

Tsunami evacuation mathematical model for the city of Padang  

SciTech Connect (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

436

Phase III Drilling Operations at the Long Valley Exploratory Well (LVF 51-20)  

SciTech Connect (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

437

Investigation of the electrocatalysis for oxygen reduction reaction by Pt and binary Pt alloys: an XRD, XAS and electrochemical study  

SciTech Connect (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

438

Geologic evolution of the Jemez Mountains and their potential for future volcanic activity  

SciTech Connect (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

439

Regressing Gas/Particle Partitioning Data for Polycyclic Aromatic Hydrocarbons  

Science Journals Connector (OSTI)

Regressing Gas/Particle Partitioning Data for Polycyclic Aromatic Hydrocarbons ... Although PAHs can be emitted to the environment as a result of natural combustion processes (e.g., forest fires and volcanoes), human activities are believed to dominate global PAH emissions, because high atmospheric concentrations of PAHs are usually observed in urban and industrial areas where vehicle traffic, aluminum smelting, residential heating, and other activities emit PAHs into the atmosphere (4, 5). ... One of the earliest approaches to describing the G/P partitioning equilibrium of PAHs, known as the Junge?Pankow model, relates ? to PL using the following: The parameter A in this equation is sometimes interpreted as the product of two terms c and ?. ? is the surface area of particles in a unit volume of air (cm2·cm-3) and c (Pa·cm) is a substance-specific factor depending on ambient temper ature, compound, sorption sites, and the heats of desorption from surface and vaporization from the liquid compound (7, 10, 14). ...

Yushan Su; Ying Duan Lei; Frank Wania; Mahiba Shoeib; Tom Harner

2006-04-22T23:59:59.000Z

440

Calculations of turbidite deposits and tsunamis from submarine landslides  

SciTech Connect (OSTI)

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

Note: This page contains sample records for the topic "ruapehu volcano taupo" from the National Library of EnergyBeta (NLEBeta).
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441

Characterization of jovian plasma embedded dust particles  

E-Print Network [OSTI]

As the data from space missions and laboratories improve, a research domain combining plasmas and charged dust is gaining in prominence. Our solar system provides many natural laboratories such as planetary rings, comet comae and tails, ejecta clouds around moons and asteroids, and Earth's noctilucent clouds for which to closely study plasma-embedded cosmic dust. One natural laboratory to study electromagnetically-controlled cosmic dust has been provided by the Jovian dust streams and the data from the instruments which were on board the Galileo spacecraft. Given the prodigious quantity of dust poured into the Jovian magnetosphere by Io and its volcanoes resulting in the dust streams, the possibility of dusty plasma conditions exist. This paper characterizes the main parameters for those interested in studying dust embedded in a plasma with a focus on the Jupiter environment. I show how to distinguish between dust-in-plasma and dusty-plasma and how the Havnes parameter P can be used to support or negate the possibility of collective behavior of the dusty plasma. The result of applying these tools to the Jovian dust streams reveals mostly dust-in-plasma behavior. In the orbits displaying the highest dust stream fluxes, portions of orbits E4, G7, G8, C21 satisfy the minimum requirements for a dusty plasma. However, the P parameter demonstrates that these mild dusty plasma conditions do not lead to collective behavior of the dust stream particles.

Amara L. Graps

2006-05-21T23:59:59.000Z

442

Alteration of basaltic glasses from north-central British Columbia, Canada  

SciTech Connect (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

443

Light extinction in the atmosphere  

SciTech Connect (OSTI)

Atmospheric aerosol particles originating from natural sources, such as volcanos and sulfur-bearing gas emissions from the oceans, and from human sources, such as sulfur emissions from fossil fuel combustion and biomass burning, strongly affect visual air quality and are suspected to significantly affect radiative climate forcing of the planet. During the daytime, aerosols obscure scenic vistas, while at night they diminish our ability to observe stellar objects. Scattering of light is the main means by which aerosols attenuate and redistribute light in the atmosphere and by which aerosols can alter and reduce visibility and potentially modify the energy balance of the planet. Trends and seasonal variability of atmospheric aerosol loading, such as column-integrated light extinction or optical depth, and how they may affect potential climate change have been difficult to quantify because there have been few observations made of important aerosol optical parameters, such as optical depth, over the globe and over time and often these are of uneven quality. To address questions related to possible climate change, there is a pressing need to acquire more high-quality aerosol optical depth data. Extensive deployment of improved solar radiometers over the next few years will provide higher-quality extinction data over a wider variety of locations worldwide. An often overlooked source of turbidity data, however, is available from astronomical observations, particularly stellar photoelectric photometry observations. With the exception of the Project ASTRA articles published almost 20 years ago, few of these data ever appear in the published literature. This paper will review the current status of atmospheric extinction observations, as highlighted by the ASTRA work and augmented by more recent solar radiometry measurements.

Laulainen, N.

1992-06-01T23:59:59.000Z

444

Shallow Drilling In The Salton Sea Region, The Thermal Anomaly  

SciTech Connect (OSTI)

During two shallow thermal drilling programs, thermal measurements were obtained in 56 shallow (76.2 m) and one intermediate (457.3 m) depth holes located both onshore and offshore along the southern margin of the Salton Sea in the Imperial Valley, California. These data complete the surficial coverage of the thermal anomaly, revealing the shape and lateral extent of the hydrothermal system. The thermal data show the region of high thermal gradients to extend only a short distance offshore to the north of the Quaternary volcanic domes which are exposed along the southern shore of the Salton Sea. The thermal anomaly has an arcuate shape, about 4 km wide and 12 km long. Across the center of the anomaly, the transition zone between locations exhibiting high thermal gradients and those exhibiting regional thermal gradients is quite narrow. Thermal gradients rise from near regional (0.09 C/m) to extreme (0.83 C/m) in only 2.4 km. The heat flow in the central part of the anomaly is >600 mW/m{sup 2} and in some areas exceeds 1200 mW/m{sup 2}. The shape of the thermal anomaly is asymmetric with respect to the line of volcanoes previously thought to represent the center of the field, with its center line offset south of the volcanic buttes. There is no broad thermal anomaly associated with the magnetic high that extends offshore to the northeast from the volcanic domes. These observations of the thermal anomaly provide important constraints for models of the circulation of the hydrothermal system. Thermal budgets based on a simple model for this hydrothermal system indicate that the heat influx rate for local ''hot spots'' in the region may be large enough to account for the rate of heat flux from the entire Salton Trough.

Newmark, R. L.; Kasameyer, P. W.; Younker, L. W.

1987-01-01T23:59:59.000Z

445

Late Tertiary/Quaternary volcanics of southern Costa Rica and northern Panama  

SciTech Connect (OSTI)

The recent tectonic evolution of the Isthmus of Panama is marked by a complexity imparted by a subduction zone - magmatic arc, a transform plate boundary, and the attempted subduction of an aseismic ridge. In northern Panama andesites form the morphologically young Chiriqui stratovolcano, while in southern Costa Rica they are found interbedded with thick lahars. Two groups of andesites occur in the region. One is low in Si and K (Group I); the other high in Si and K (Group II). The Panamanian andesites belong to both the groups, while Costa Rican andesites are restricted to Group II. Group I andesites are glassy, plagioclase-phyric (An45 rims), and contain abundant augite (Wo46En46Fs8) and magnetite. Rare, resorbed olivine (Fo82) and amphibole are occasionally observed. The Group II andesites have similar mineralogy but also contain abundant pargasitic hornblende and minor orthopyroxene or pigeonite. Xenoliths are common in the Group II andesites of Chiriqui Volcano. Two types of xenoliths are recognized. Cumulate-textured, hornblende gabbro xenoliths vary from nearly pure plagioclase to nearly pure amphibole. These gabbroic xenoliths contain plagioclase (An90 cores to An53 rims), augite, and pargasitic hornblende often displaying the same reaction products as found in the andesites. These xenoliths are interpreted as cognate. These andesites are all characterized by high alkalis and alkali earths; Group II have over 1500 ppm Ba and 1000 ppm Sr. They are apparently produced by partial melting of a highly metasomatised mantle followed by high-pressure fractionation dominated by hornblende.

Roy, A.; Byerly, G.R.

1985-01-01T23:59:59.000Z

446

Rifting of the Izu-Bonin arc in the Quaternary and Mid-Oligocene  

SciTech Connect (OSTI)

Eruption of middle Eocene-lower Oligocene boninites and island arc tholeiites created the 200 km wide Izu-Bonin arc massif following the initiation of subduction {approximately}50 Ma. Mid-Oligocene rifting formed a 40-70 km wide forearc basin between the Eocene outer-arc high and the Eo-Oligocene arc (now the frontal arc high), with maximum extension at the latitudes of the Bonin Ridge and Trough. The Oligocene forearc basin was rapidly (100-300 m/m.y.) filled with turbidite and debris flow deposits produced by concurrent volcanism and erosion of the surrounding highs. Contemporaneous stretching in the backarc region produced dominantly east-dipping, NNE-trending, normal faults and culminated in backarc spreading in the Shikoku basin (25-15 Ma), isolating the Palau-Kyushu remnant arc. The forearc and remnant arc sediments record a dearth of volcanogenic input between 23 and 17 Ma; evidence that an arc volcanic minimum accompanied backarc spreading. The middle Miocene to Recent volcanic front formed 0(S)-50(N) km west of the Oligocene arc and has loaded and flexed the forearc. Further west, chains of submarine volcanoes erupted along the extension of Shikoku basin fracture zones. Basaltic sills were emplaced in the forearc. Explosive volcanism from rhyolitic calderas has increased dramatically since the late Pliocene, especially in the last 0.2 Ma. Since {approximately}2 Ma the arc has been stretched again, producing rapidly subsiding (300-2,250 m/m.y.) graben, immediately west of the volcanic front, which are segmented along strike by oblique transfer zones. The Sumisu Rift is partially filled with (<1.5 Ma) volcaniclastic turbidites and hemipelagic sediments and is intruded by backarc basin basalts. About 1 km of syn-rift uplift of the arc margin footwall has produced an unconformity, beneath surficial pumice, that extends back to pumiceous sediments >2.35 Ma.

Taylor, B. (Univ. of Hawaii, Honolulu (USA))

1990-06-01T23:59:59.000Z

447

A chemostratigraphic investigation of the prehistoric Vavalaci lava sequence on Mount Etna: Simulating borehole drilling  

Science Journals Connector (OSTI)

Scientific drilling of volcanic successions has been suggested as a way of establishing stratigraphic sequences of unexposed lava flows on large complex volcanoes, with the aim of in-depth study of magmatic processes and source geochemistry of otherwise inaccessible lava sequences. To simulate the core drilling of such sequences, lava flows from the prehistoric Vavalaci Centre exposed in the south wall of the Valle del Bove, Mount Etna, Sicily, were sampled in four stratigraphic sections. The fresh, generally strongly porphyritic Na-alkaline trachybasalts and trachyandesites show diverging sub-parallel trends of high- and low-alkali concentrations in total alkali versus silica (TAS) diagrams, whilst variations of other major and trace elements reveal two further distinct chemical groups enriched in K, REE and Ti which follow separate fractionation paths. A set of control samples was used to establish geochemical variations within a single lava flow. Primitive mantle normalised incompatible element patterns demonstrate that the lavas have highly enriched OIB signatures with a clear division in LREE, Ba, Th, Nb and Zr concentrations between the four different chemical groups. Comparison of data for the Vavalaci lavas with the compositions of other prehistoric, historic and recent eruptions of Mt. Etna indicates a temporal trend towards more basic magma compositions. The chemostratigraphy of the lavas was statistically analysed to give correlations between flows from different sections. Whilst a good number of geologically meaningful correlations were revealed, we can demonstrate that only one set of lavas was actually sampled in all four sections, whilst a number of unique lavas remain uncorrelated. Thus no individual section, or simulated borehole core, provided samples of the complete lava flow sequence without significant gaps in the stratigraphy. The trends in lava compositions are also defined in the stratigraphy, showing their evolution from low- to high-alkali lavas through the series, which may be related to temporal decrease in degree of partial melting of the mantle rather than through simple fractionation processes or mixing of magmas.

Ann Spence; Hilary Downes

2011-01-01T23:59:59.000Z

448

Disruptive Event Biosphere Doser Conversion Factor Analysis  

SciTech Connect (OSTI)

The purpose of this report was to document the process leading to, and the results of, development of radionuclide-, exposure scenario-, and ash thickness-specific Biosphere Dose Conversion Factors (BDCFs) for the postulated postclosure extrusive igneous event (volcanic eruption) at Yucca Mountain. BDCF calculations were done for seventeen radionuclides. The selection of radionuclides included those that may be significant dose contributors during the compliance period of up to 10,000 years, as well as radionuclides of importance for up to 1 million years postclosure. The approach documented in this report takes into account human exposure during three different phases at the time of, and after, volcanic eruption. Calculations of disruptive event BDCFs used the GENII-S computer code in a series of probabilistic realizations to propagate the uncertainties of input parameters into the output. The pathway analysis included consideration of different exposure pathway's contribution to the BDCFs. BDCFs for volcanic eruption, when combined with the concentration of radioactivity deposited by eruption on the soil surface, allow calculation of potential radiation doses to the receptor of interest. Calculation of radioactivity deposition is outside the scope of this report and so is the transport of contaminated ash from the volcano to the location of the receptor. The integration of the biosphere modeling results (BDCFs) with the outcomes of the other component models is accomplished in the Total System Performance Assessment (TSPA), in which doses are calculated to the receptor of interest from radionuclides postulated to be released to the environment from the potential repository at Yucca Mountain.

M. Wasiolek

2000-12-28T23:59:59.000Z

449

Evolution of the geothermal fluids at Los Azufres, Mexico, as traced by noble gas isotopes, ?18O, ?D, ?13C and 87Sr/86Sr  

Science Journals Connector (OSTI)

Isotopes of noble gases, CO2, H2O and Sr were measured in 10 geothermal wells and 8 hot springs, fumaroles and mud volcanoes at Los Azufres, the second most important geothermal field in Mexico. The aim of this study is to provide additional information on fluid circulation in the field and surrounding areas (Araró hot springs), as well as on physical processes such as boiling, steam separation and invasion of re-injected brines following over 25 years of geothermal fluid exploitation. Mantle helium dominates in fluids from the northern production zone of Marítaro, with measured 3He/4He ratios up to 7 Ra (where Ra is the atmospheric ratio of 1.386 × 10? 6). 3He/4He ratios are positively correlated with 87Sr/86Sr ratios and with ?D and ?18O. These relationships suggest that Los Azufres fluids represent a mixing between primary magmatic 3He-rich fluids and groundwater currently discharging at Araró hot springs and enriched in radiogenic 4He acquired from Miocene andesites. Unusually high He ratios together with radiogenic Sr isotopic ratios suggest that thermal waters acquired mantle He from deep-seated parent magmas and radiogenic Sr possibly during their uprising through the metamorphic basement. 40Ar/36Ar ratios of 366 to 429 measured in two wells indicate either mantle-derived argon or a radiogenic 40Ar in situ component, suggesting the local presence of an older crustal fluid component in the northern part of the field. Ne, Kr and Xe are entirely of atmospheric origin, but processes of boiling, steam separation and re-injection of used brines have led to fractionation of their elemental abundances. Comparison with previous studies suggests that the boiling zone in the northern production zone is currently extending further north (Marítaro hot springs). In the southwestern productive zone, re-injected brines might account for more than 90% of the exploited fluids.

D.L. Pinti; M.C. Castro; O. Shouakar-Stash; A. Tremblay; V.H. Garduño; C.M. Hall; J.-F. Hélie; B. Ghaleb

2013-01-01T23:59:59.000Z

450

The influence of wind on the estimation of lava effusion rate from thermal remote-sensing  

Science Journals Connector (OSTI)

Abstract Effusion rate is a key parameter to model lava flow advance and associated risks. Estimation of effusion rate from thermal remote-sensing using satellite data has matured to the point where it can be an operational monitoring tool, notably for volcanoes without a ground observatory. However, robust physical models, as required for quantitative interpretations, have not yet been adequately developed. The current and widely used method relates the satellite-measured radiated power to the flow effusion rate through the lava area, with an empirical fit that assumes a low surface cooling efficiency. Here we use novel fluid dynamic laboratory experiments and viscous flow theory to show that assuming low convective cooling at the surface of the flow leads to a systematic underestimation of the effusion rate. This result, obtained for the case of a hot isoviscous gravity current which cools as it flows, relies only on the respective efficiency of convection and radiation at the flow surface, and is independent of the details of the internal flow model. Applying this model to lava flows cooling under classical wind conditions, we find that the model compares well to data acquired on basaltic eruptions within the error bars corresponding to the uncertainties on natural wind conditions. Hence the thermal proxy deduced from the isoviscous model does not seem to require an additional fitting parameter accounting for internal flow processes such as crystallization. The predictions of the model are not correct however for thick lava flows such as highly viscous domes, because a thermal steady state is probably not reached for these flows. Furthermore, in the case of very large basaltic flows, extra cooling is expected due to self-induced convection currents. The increased efficiency of surface cooling for these large eruptions must be taken into account to avoid a gross – and dangerously misleading – underestimate of the effusion rate.

F. Garel; E. Kaminski; S. Tait; A. Limare

2013-01-01T23:59:59.000Z

451

Analysis and modelling of the aeromagnetic anomalies of Gran Canaria (Canary Islands)  

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In this paper we present a crustal magnetic model of the volcanic island of Gran Canaria based on aeromagnetic data. This magnetic study has made it possible to constrain the location and geometry of: (1) the mafic core of Gran Canaria, built as the result of the crystallization of magmas which rose from the mantle during the submarine and shield basaltic stages of its evolution. The most intense magnetic high, displayed over the NW part of the island likely shows the main feeding system of the shield volcano; (2) the residual syenitic shallow magma chamber which fed the salic volcanic activity in the center of the island, linked to the formation of the Tejeda caldera and to the intrusion of felsic rocks which made up a cone sheet; (3) a reversely magnetized linear intrusion located in the marine area to the NW of the island, which could be related to the magmatic source of the submarine volcanism between Gran Canaria and Tenerife. Most of these magnetic sources show a linear pattern with trends that are in close agreement with the orientations of previously identified fractures. The magmatic intrusion to the NW of the island could be related with a WSW–ENE active fault between Gran Canaria and Tenerife, while the main trend and location of the mafic core agree with a NW–SE fault suggested by geological studies. This means that these magnetic sources are the result of the ascent and intrusion of magma along regional fractures. Therefore, this study provides fresh data which demonstrate the influence of regional tectonics on the growth of Gran Canaria during its entire evolution. Finally, the spectral analysis of the magnetic anomaly map suggests that it is possible that rocks located at mantle-like depths (from the Moho to about 23 km) behave as magnetic sources, a fact that can be related with the magmatic underplating detected by other geophysical techniques.

Isabel Blanco-Montenegro; J.Miquel Torta; Alicia Garc??a; Vicente Araña

2003-01-01T23:59:59.000Z

452

The formation of volcanic centers at the Colorado Plateau as a result of the passage of aqueous fluid through the oceanic lithosphere and the subcontinental mantle: New implications for the planetary water cycle in the western United States  

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We provide new petrological evidence for the strong influence of water on the formation of the oceanic lithospheric mantle, the subcontinental mantle above, and the continental lithosphere. Our analysis throws new light on the hypothesis that new continental lithosphere was formed by the passage of silicate-rich aqueous fluid through the sub-continental mantle. In order to investigate this hypothesis, we analyzed a representative collection of lherzolite and harzburgite xenoliths from the sample volcano known as “The Thumb”, located in the center of the Colorado Plateau, western United States. The studied sample collection exhibits multi-stage water enrichment processes along point, line and planar defect structures in nominally anhydrous minerals and the subsequent formation of the serpentine polymorph antigorite along grain boundaries and in totally embedded annealed cracks. Planar defect structures act like monomineralic and interphase grain boundaries in the oceanic lithosphere and the subcontinental mantle beneath the North American plate, which was hydrated by the ancient oceanic Farallon plate during the Cenozoic and Mesozoic eras. We used microspectroscopical, petrological, and seismological techniques to confirm multi-stage hydration from a depth of ?150 km to just below the Moho depth. High-resolution mapping of the water distribution over homogeneous areas and fully embedded point, line and planar defects in olivine crystals of lherzolitic and harzburgitic origin by synchrotron infrared microspectroscopy enabled us to resolve local wet spots and thus reconstruct the hydration process occurring at a depth of ?150 km (T ? 1225 °C). These lherzolites originated from the middle part of the Farallon mantle slab; they were released during the break up of the Farallon mantle slab, caused by the instability of the dipping slab. The background hydration levels in homogeneous olivines reached ?138 ppm wt H2O, and the water concentration at the planar defects could reach up to ?1000 ppm wt H2O. However, the formation of antigorite in grain boundaries was found to be the primary hydration mechanism for harzburgitic samples originating from the subcontinental mantle (for hydration, T ? 600 °C). Additionally, the formation of antigorite in lherzolites could be found in annealed cracks. From these observations, we conclude that hydration induces multi-stage water enrichment of the mantle wedge by a process that is dominated by the growth and movement of ubiquitous cracks, which acts as planar defects. Cracks in the mantle seem to be the an important feature in both the water cycle of the subduction zone and the formation of the continental lithosphere.

Holger Sommer; Klaus Regenauer-Lieb; Biliana Gasharova; Haemyeong Jung

2012-01-01T23:59:59.000Z

453

Using the DOE Knowledge Base for Special Event Analysis  

SciTech Connect (OSTI)

The DOE Knowledge Base is a library of detailed information whose purpose is to support the United States National Data Center (USNDC) in its mission to monitor compliance with the Comprehensive Test Ban Treaty (CTBT). One of the important tasks which the USNDC must accomplish is to periodically perform detailed analysis of events of high interest, so-called "Special Events", to provide the national authority with information needed to make policy decisions. In this paper we investigate some possible uses of the Knowledge Base for Special Event Analysis (SEA), and make recommendations for improving Knowledge Base support for SEA. To analyze an event in detail, there are two basic types of data which must be used sensor-derived data (wave- forms, arrivals, events, etc.) and regiohalized contextual data (known sources, geological characteristics, etc.). Cur- rently there is no single package which can provide full access to both types of data, so for our study we use a separate package for each MatSeis, the Sandia Labs-developed MATLAB-based seismic analysis package, for wave- form data analysis, and ArcView, an ESRI product, for contextual data analysis. Both packages are well-suited to pro- totyping because they provide a rich set of currently available functionality and yet are also flexible and easily extensible, . Using these tools and Phase I Knowledge Base data sets, we show how the Knowledge Base can improve both the speed and the quality of SEA. Empirically-derived interpolated correction information can be accessed to improve both location estimates and associated error estimates. This information can in turn be used to identi~ any known nearby sources (e.g. mines, volcanos), which may then trigger specialized processing of the sensor data. Based on the location estimate, preferred magnitude formulas and discriminants can be retrieved, and any known blockages can be identified to prevent miscalculations. Relevant historic events can be identilled either by spatial proximity searches or through waveform correlation processing. The locations and waveforms of these events can then be made available for side-by-side comparison and processing. If synthetic modeling is thought to be warranted, a wide variety of rele- vant contextu~l information (e.g. crustal thickness and layering, seismic velocities, attenuation factors) can be retrieved and sent to the appropriate applications. Once formedj the synthetics can then be brought in for side-by-side comparison and fhrther processing. Based on our study, we make two general recommendations. First, proper inter-process communication between sensor data analysis software and contextual data analysis sofisvare should be developed. Second, some of the Knowl- edge Base data sets should be prioritized or winnowed to streamline comparison with observed quantities.

Armstrong, H.M.; Harris, J.M.; Young, C.J.

1998-10-20T23:59:59.000Z

454

Project Management Plan for the Hawaii Geothermal Project Environmental Impact Statement  

SciTech Connect (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

455

Assessment of tsunami hazard to the U.S. Atlantic margin  

Science Journals Connector (OSTI)

Abstract Tsunami hazard is a very low-probability, but potentially high-risk natural hazard, posing unique challenges to scientists and policy makers trying to mitigate its impacts. These challenges are illustrated in this assessment of tsunami hazard to the U.S. Atlantic margin. Seismic activity along the U.S. Atlantic margin in general is low, and confirmed paleo-tsunami deposits have not yet been found, suggesting a very low rate of hazard. However, the devastating 1929 Grand Banks tsunami along the Atlantic margin of Canada shows that these events continue to occur. Densely populated areas, extensive industrial and port facilities, and the presence of ten nuclear power plants along the coast, make this region highly vulnerable to flooding by tsunamis and therefore even low-probability events need to be evaluated. We can presently draw several tentative conclusions regarding tsunami hazard to the U.S. Atlantic coast. Landslide tsunamis likely constitute the biggest tsunami hazard to the coast. Only a small number of landslides have so far been dated and they are generally older than 10,000 years. The geographical distribution of landslides along the margin is expected to be uneven and to depend on the distribution of seismic activity along the margin and on the geographical distribution of Pleistocene sediment. We do not see evidence that gas hydrate dissociation contributes to the generation of landslides along the U.S. Atlantic margin. Analysis of landslide statistics along the fluvial and glacial portions of the margin indicate that most of the landslides are translational, were probably initiated by seismic acceleration, and failed as aggregate slope failures. How tsunamis are generated from aggregate landslides remains however, unclear. Estimates of the recurrence interval of earthquakes along the continental slope may provide maximum estimates for the recurrence interval of landslide along the margin. Tsunamis caused by atmospheric disturbances and by coastal earthquakes may be more frequent than those generated by landslides, but their amplitudes are probably smaller. Among the possible far-field earthquake sources, only earthquakes located within the Gulf of Cadiz or west of the Tore-Madeira Rise are likely to affect the U.S. coast. It is questionable whether earthquakes on the Puerto Rico Trench are capable of producing a large enough tsunami that will affect the U.S. Atlantic coast. More information is needed to evaluate the seismic potential of the northern Cuba fold-and-thrust belt. The hazard from a volcano flank collapse in the Canary Islands is likely smaller than originally stated, and there is not enough information to evaluate the magnitude and frequency of flank collapse from the Azores Islands. Both deterministic and probabilistic methods to evaluate the tsunami hazard from the margin are available for application to the Atlantic margin, but their implementation requires more information than is currently available.

U.S. ten Brink; J.D. Chaytor; E.L. Geist; D.S. Brothers; B.D. Andrews

2014-01-01T23:59:59.000Z

456

Geothermal Information Dissemination and Outreach  

SciTech Connect (OSTI)

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