Sample records for zones faults hydrological

  1. Development of Characterization Technology for Fault Zone Hydrology

    E-Print Network [OSTI]

    Karasaki, Kenzi

    2010-01-01T23:59:59.000Z

    TECHNOLOGY FOR FAULT ZONE HYDROLOGY Kenzi Karasaki Lawrencefor characterizing the hydrology of fault zones, recognizingstructure of faults to hydrology, that it still may be

  2. Stress and fault rock controls on fault zone hydrology, Coso...

    Open Energy Info (EERE)

    rock controls on fault zone hydrology, Coso geothermal field, CA Abstract In crystalline rock of the Coso Geothermal Field, CA, fractures are the primary source of permeability....

  3. Development of Hydrologic Characterization Technology of Fault Zones

    SciTech Connect (OSTI)

    Karasaki, Kenzi; Onishi, Tiemi; Wu, Yu-Shu

    2008-03-31T23:59:59.000Z

    Through an extensive literature survey we find that there is very limited amount of work on fault zone hydrology, particularly in the field using borehole testing. The common elements of a fault include a core, and damage zones. The core usually acts as a barrier to the flow across it, whereas the damage zone controls the flow either parallel to the strike or dip of a fault. In most of cases the damage zone isthe one that is controlling the flow in the fault zone and the surroundings. The permeability of damage zone is in the range of two to three orders of magnitude higher than the protolith. The fault core can have permeability up to seven orders of magnitude lower than the damage zone. The fault types (normal, reverse, and strike-slip) by themselves do not appear to be a clear classifier of the hydrology of fault zones. However, there still remains a possibility that other additional geologic attributes and scaling relationships can be used to predict or bracket the range of hydrologic behavior of fault zones. AMT (Audio frequency Magneto Telluric) and seismic reflection techniques are often used to locate faults. Geochemical signatures and temperature distributions are often used to identify flow domains and/or directions. ALSM (Airborne Laser Swath Mapping) or LIDAR (Light Detection and Ranging) method may prove to be a powerful tool for identifying lineaments in place of the traditional photogrammetry. Nonetheless not much work has been done to characterize the hydrologic properties of faults by directly testing them using pump tests. There are some uncertainties involved in analyzing pressure transients of pump tests: both low permeability and high permeability faults exhibit similar pressure responses. A physically based conceptual and numerical model is presented for simulating fluid and heat flow and solute transport through fractured fault zones using a multiple-continuum medium approach. Data from the Horonobe URL site are analyzed to demonstrate the proposed approach and to examine the flow direction and magnitude on both sides of a suspected fault. We describe a strategy for effective characterization of fault zone hydrology. We recommend conducting a long term pump test followed by a long term buildup test. We do not recommend isolating the borehole into too many intervals. We do recommend ensuring durability and redundancy for long term monitoring.

  4. Development of Characterization Technology for Fault Zone Hydrology

    SciTech Connect (OSTI)

    Karasaki, Kenzi; Onishi, Tiemi; Gasperikova, Erika; Goto, Junichi; Tsuchi, Hiroyuki; Miwa, Tadashi; Ueta, Keiichi; Kiho, Kenzo; MIyakawa, Kimio

    2010-08-06T23:59:59.000Z

    Several deep trenches were cut, and a number of geophysical surveys were conducted across the Wildcat Fault in the hills east of Berkeley, California. The Wildcat Fault is believed to be a strike-slip fault and a member of the Hayward Fault System, with over 10 km of displacement. So far, three boreholes of ~;; 150m deep have been core-drilled and borehole geophysical logs were conducted. The rocks are extensively sheared and fractured; gouges were observed at several depths and a thick cataclasitic zone was also observed. While confirming some earlier, published conclusions from shallow observations about Wildcat, some unexpected findings were encountered. Preliminary analysis indicates that Wildcat near the field site consists of multiple faults. The hydraulic test data suggest the dual properties of the hydrologic structure of the fault zone. A fourth borehole is planned to penetrate the main fault believed to lie in-between the holes. The main philosophy behind our approach for the hydrologic characterization of such a complex fractured system is to let the system take its own average and monitor a long term behavior instead of collecting a multitude of data at small length and time scales, or at a discrete fracture scale and to ?up-scale,? which is extremely tenuous.

  5. The effect of fractures, faults, and sheared shale zones on the hydrology of Bear Creek Burial Grounds A-South, Oak Ridge, Tennessee

    E-Print Network [OSTI]

    Hollon, Dwight Mitchell

    1997-01-01T23:59:59.000Z

    Previous hydrologic models of flow in Bear Creek Valley have presented lateral flow as occurring through the Nolichucky Shale in parallel to strike fractures within thin carbonate beds; the effects of faults were not considered. This study presents...

  6. The effect of fractures, faults, and sheared shale zones on the hydrology of Bear Creek Burial Grounds A-South, Oak Ridge, Tennessee 

    E-Print Network [OSTI]

    Hollon, Dwight Mitchell

    1997-01-01T23:59:59.000Z

    Previous hydrologic models of flow in Bear Creek Valley have presented lateral flow as occurring through the Nolichucky Shale in parallel to strike fractures within thin carbonate beds; the effects of faults were not considered. This study presents...

  7. Collateral damage: Evolution with displacement of fracture distribution and secondary fault strands in fault damage zones

    E-Print Network [OSTI]

    Savage, Heather M.; Brodsky, Emily E.

    2011-01-01T23:59:59.000Z

    E. McCallum (1999), Reservoir damage around faults: OutcropSkar (2005), Controls on damage zone asymmetry of a normal2007), The evolution of the damage zone with fault growth in

  8. Hydrological and Oceanographic Considerations for Integrated Coastal Zone Management

    E-Print Network [OSTI]

    sustainable economic development. This study aims to support environmental management at the scaleHydrological and Oceanographic Considerations for Integrated Coastal Zone Management in Southern reduce soil fertility in the uplands and nega- tively affect mangrove, seagrass, and coral reef

  9. anatolian fault zone: Topics by E-print Network

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

    across the Mudurnu segment of the North Anatolian Fault Zone (NAFZ) in northwestern Turkey Ben-Zion, Yehuda 2 Velocity contrast across the 1944 rupture zone of the North...

  10. Mechanical properties and fabric of the Punchbowl fault zone, California

    E-Print Network [OSTI]

    Chester, Frederick Michael

    1983-01-01T23:59:59.000Z

    MECHANICAL PROPERIIES AND FABRIC OF THE PUiVCHBOlv'L FAULT ZONE, CALIFORNIA A Thesis by FREDERICK MICHAEL CHESTER Subm-', tted to the Graduate College of Texas ABM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 1983 Major Subject: Geology MECHANICAL PROPERTIES AND FABRIC OF THE PUNCHBOWL FAULT ZONE, CALIFORNIA A Thesis by FREDERICK MICHAEL CHESTER Approved as to sty1e and content by: on . . an airman o ommittee) Me1vin edman...

  11. Microfracture fabric of the Punchbowl fault zone, San Andreas System, California

    E-Print Network [OSTI]

    Wilson, Jennifer Elizabeth

    1999-01-01T23:59:59.000Z

    The origin of fault zone structure is not completely understood. On the basis of mechanistic models of faulting, the characteristic internal structure of faults may largely be established early during growth of the fault, or it may develop...

  12. Boullier The fault zone geology 1 Fault zone geology: lessons from drilling through the Nojima and 1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    drilling through the Nojima and 1 Chelungpu faults 2 3 Anne-Marie Boullier 4-Marie.Boullier@obs.ujf-grenoble.fr 8 9 Abstract 10 Several drilling projects have been conducted through significant topics 32 for future research, one of which was "fault zone drilling

  13. Boullier The fault zone geology 1 Fault zone geology: lessons from drilling through the Nojima and 1

    E-Print Network [OSTI]

    Boyer, Edmond

    drilling through the Nojima and 1 Chelungpu faults 2 3 Anne-Marie Boullier 4-Marie.Boullier@obs.ujf-grenoble.fr 8 9 Abstract 10 Several drilling projects have been conducted through was "fault zone drilling combined with surface-based 33 geophysical and geological

  14. Spatial analysis of hypocenter to fault relationships for determining fault process zone width in Japan.

    SciTech Connect (OSTI)

    Arnold, Bill Walter; Roberts, Barry L.; McKenna, Sean Andrew; Coburn, Timothy C. (Abilene Christian University, Abilene, TX)

    2004-09-01T23:59:59.000Z

    Preliminary investigation areas (PIA) for a potential repository of high-level radioactive waste must be evaluated by NUMO with regard to a number of qualifying factors. One of these factors is related to earthquakes and fault activity. This study develops a spatial statistical assessment method that can be applied to the active faults in Japan to perform such screening evaluations. This analysis uses the distribution of seismicity near faults to define the width of the associated process zone. This concept is based on previous observations of aftershock earthquakes clustered near active faults and on the assumption that such seismic activity is indicative of fracturing and associated impacts on bedrock integrity. Preliminary analyses of aggregate data for all of Japan confirmed that the frequency of earthquakes is higher near active faults. Data used in the analysis were obtained from NUMO and consist of three primary sources: (1) active fault attributes compiled in a spreadsheet, (2) earthquake hypocenter data, and (3) active fault locations. Examination of these data revealed several limitations with regard to the ability to associate fault attributes from the spreadsheet to locations of individual fault trace segments. In particular, there was no direct link between attributes of the active faults in the spreadsheet and the active fault locations in the GIS database. In addition, the hypocenter location resolution in the pre-1983 data was less accurate than for later data. These pre-1983 hypocenters were eliminated from further analysis.

  15. Clay fabric intensity in natural and artificial fault gouges: Implications for brittle fault zone processes and sedimentary

    E-Print Network [OSTI]

    Clay fabric intensity in natural and artificial fault gouges: Implications for brittle fault zone processes and sedimentary basin clay fabric evolution Samuel H. Haines,1 Ben A. van der Pluijm,1 Matt J intensity measurements using X-ray texture goniometry on 22 natural clay-rich fault gouges from low

  16. Frictional characteristics of serpentinite from the Motagua fault zone in Guatemala: an experimental study 

    E-Print Network [OSTI]

    Dengo, Carlos Arturo

    1978-01-01T23:59:59.000Z

    of the requirement for the degree of MASTER OF SCIENCE December 1978 Mad or Subjec' . " Geology FRICTIONAL CHARACTERISTIC OF SERPENTINITF. FRON THE I", OTAGUA FAULT ZONE Ili GUATENALA: AN EXPERIMENTAL STUDY A Thesis by CARLOS ARTURO DFNGO App", oved... strike-slip, seismogenic faults warrants a systematic i nvesti ga tion to determine ho v it". frictional characteristics may afreet slip along the fault. Five locations aiong the fault zone were sampled to investigate the sliding !rode as a function...

  17. Locating an active fault zone in Coso geothermal field by analyzing...

    Open Energy Info (EERE)

    from microearthquake data Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: Locating an active fault zone in Coso geothermal field by...

  18. Development of Hydrologic Characterization Technology of Fault Zones

    E-Print Network [OSTI]

    Karasaki, Kenzi

    2009-01-01T23:59:59.000Z

    model for fissured fractured reservoir, Soc. Pet. Eng. J. ,flow simulations in fractured reservoirs, Report LBL-15227,behavior of naturally fractured reservoirs, Soc. Pet. Eng.

  19. Development of Hydrologic Characterization Technology of Fault Zones

    E-Print Network [OSTI]

    Karasaki, Kenzi

    2009-01-01T23:59:59.000Z

    R.A. Everitt, C.D. Martin, P.M. Thompson) AECL-10560,COG-94- AECL, 1994b. Environmental Impact Statement on thes Nuclear Fuel Waste. AECL -10711, COG-93-1, 496p. Anderson,

  20. Trapping capacity of fault zones, downdip Yegua Formation, Texas Gulf Coast basin 

    E-Print Network [OSTI]

    Hintz, Jena Christine

    2001-01-01T23:59:59.000Z

    The homogenization of sediment from shearing forms traps in both the hanging wall and footwall due to capillary pressure differences. The sheared zone associated with large faults can form traps. Sheared zones associated ...

  1. Deformation of Compliant Fault Zones Induced by Nearby Earthquakes: Theoretical Investigations in Three Dimensions and Applications to The East California Shear Zone

    E-Print Network [OSTI]

    Kang, Jingqian

    2014-02-21T23:59:59.000Z

    Using dynamic modeling of earthquake rupture on a strike-slip fault and seismic wave propagation in a three dimensional inhomogeneous elastoplastic medium, I investigate the inelastic response of compliant fault zones to nearby earthquakes. I...

  2. Hydrogeological aspects of fault zones on various scales in the Roer Valley Rift System

    E-Print Network [OSTI]

    Bense, Victor

    within fault zones has important implications for the modeling of groundwater flow in sedimentary aquifer; Groundwater flow; Unconsolidated sediments; The Netherlands 1. Introduction Numerous studies carried out, 1081 HV Amsterdam, The Netherlands Abstract The impact of faults on the groundwater flow system

  3. Characteristics of displacement transfer zones associated with thrust faults / by Arthur Francis Xavier O'Keefe 

    E-Print Network [OSTI]

    O'Keefe, Arthur Francis Xavier

    1980-01-01T23:59:59.000Z

    CHARAC 'ERZSTZCS OF DZSPLACENENT TRANSFER 'ZONES ASSOCIATED WI H THRUST FAULTS A Thesis by ARTHUR FRANCIS XAVIER O&HEEFE Submitted to the Graduate College of Texas AlkM University in partial fulfillment of the requirement for the degree... of NASTER OF SCIENCE August 1990 Idaho or Subrent: Geology CHARACTERISTICS QF DISPLACEMENT TRANSFER ZONES ASSOCIATED NITS THRUST FAULTS A Thesis by ARTHUR FRANCIS XAVIER 0 'KEEFE Approved ss to style and content by: (Co-chairman of' Commi. tee...

  4. Collateral damage: Evolution with displacement of fracture distribution and secondary fault strands in fault damage zones

    E-Print Network [OSTI]

    Savage, Heather M.; Brodsky, Emily E.

    2011-01-01T23:59:59.000Z

    8 m fault 14 m fault Lonewolf Wadi Araba Carboneras Caletasiltstone, conglomerate Wadi As Sir Limestone gneiss schistFaulkner et al. , 2003], and Wadi Araba [Du Bernard et al. ,

  5. Stress and fault rock controls on fault zone hydrology, Coso geothermal

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎SolarCityInformationStopwattchStratton MiddleCosofrom

  6. Mechanical properties and fabric of the Punchbowl fault zone, California 

    E-Print Network [OSTI]

    Chester, Frederick Michael

    1983-01-01T23:59:59.000Z

    faults (DP10C) used in the Compression Tests. 88 22 Specimen configuration for Compression Tests. . 89 23 Specimen configuration for Shear Tests, . 92 LIST OF FIGURES (continued) FIGURE PAGE 24 Differential stress versus axial strai n... the motivation for establishing a program of earthquake-risk evaluation and prediction. One approach to earthquake-prediction (mechanistic approach of Higgs, 1 981 ) involves developing a sound understandi ng of the physical processes operative within...

  7. Low fault friction in Iran implies localized deformation for the ArabiaEurasia collision zone

    E-Print Network [OSTI]

    Vernant, Philippe

    Low fault friction in Iran implies localized deformation for the Arabia­Eurasia collision zone P velocity field of the present-day deformation in Iran is modeled using a 3-dimensional (3D) finite element of the kinematics in Iran, but the complex velocity field of the surrounding South Caspian basin cannot be fitted

  8. Late Triassic sinistral shear in the East Gobi Fault Zone, Mongolia Laura E. Webb a,

    E-Print Network [OSTI]

    Johnson, Cari

    Late Triassic sinistral shear in the East Gobi Fault Zone, Mongolia Laura E. Webb a, , Cari L for Stratigraphy and Paleontology, Mongolian University of Science and Technology, Ulaanbaatar, Mongolia a b s t r in southeastern Mongolia reveal multiple, distinct intracontinental deformation events postdating late Paleozoic

  9. Late Tertiary paleomagnetic data from Leyte, Philippines: implications for Philippine fault zone motion

    E-Print Network [OSTI]

    Cole, Jay Timothy

    1988-01-01T23:59:59.000Z

    samples were collected from 19 lava, flows (one site per flow) in Leyte and nearby islands to the north. The data collected from these sites were combined with previously reported results I'rom northeastern Mindanao. The paleomagnetic data from Neogene... rocks within or very near the Philippine fault zone on Leyte, Mindanao, Biliran, Maripipi, and Genuruan Islands fall into two populations. Seventeen late Neogene sites (14 normal polarity and 3 reversed polarity) yield a mean direction D = 358. 9', I...

  10. Hydrologic evaluation methodology for estimating water movement through the unsaturated zone at commercial low-level radioactive waste disposal sites

    SciTech Connect (OSTI)

    Meyer, P.D.; Rockhold, M.L.; Nichols, W.E.; Gee, G.W. [Pacific Northwest Lab., Richland, WA (United States)

    1996-01-01T23:59:59.000Z

    This report identifies key technical issues related to hydrologic assessment of water flow in the unsaturated zone at low-level radioactive waste (LLW) disposal facilities. In addition, a methodology for incorporating these issues in the performance assessment of proposed LLW disposal facilities is identified and evaluated. The issues discussed fall into four areas: estimating the water balance at a site (i.e., infiltration, runoff, water storage, evapotranspiration, and recharge); analyzing the hydrologic performance of engineered components of a facility; evaluating the application of models to the prediction of facility performance; and estimating the uncertainty in predicted facility performance. To illustrate the application of the methodology, two examples are presented. The first example is of a below ground vault located in a humid environment. The second example looks at a shallow land burial facility located in an arid environment. The examples utilize actual site-specific data and realistic facility designs. The two examples illustrate the issues unique to humid and arid sites as well as the issues common to all LLW sites. Strategies for addressing the analytical difficulties arising in any complex hydrologic evaluation of the unsaturated zone are demonstrated.

  11. High-definition analysis of fluid-induced seismicity related to the mesoscale hydromechanical properties of a fault zone

    E-Print Network [OSTI]

    Vallée, Martin

    -strain and seismic measurements taken in the fractured damage zone during the pressurization indicated that seismicity is triggered along low-permeable, highly rigid, low-dip angle, mesoscale-inherited fractures where-so-rigid, aseismic, sub- vertical, fault-related fractures. Using a three-dimensional distinct-element representation

  12. DYES AS TRACERS FOR VADOSE ZONE HYDROLOGY Markus Flury and Nu Nu Wai

    E-Print Network [OSTI]

    Flury, Markus

    in the subsurface. Groundwater contamination often originates in the va- dose zone. Agrochemicals applied

  13. Acceleration and evolution of faults: An example from the Hunter MountainPanamint Valley fault zone, Eastern California

    E-Print Network [OSTI]

    Amelung, Falk

    : R.D. van der Hilst Keywords: geodesy fault evolution InSAR rock mechanics Western United States assumes a monotonic increase in slip rate with time as the fault matures and straightens. The rate. However, before this can be realized, we need to better understand the various sources for discrepancies

  14. Development of a Hydrologic Characterization Technology for Fault Zones Phase II 2nd Report

    E-Print Network [OSTI]

    Karasaki, Kenzi

    2013-01-01T23:59:59.000Z

    interwell response to drilling, well-tests, long-termcores from deep drilling, and additional well data fromresponses of different wells to drilling and pump tests will

  15. Development of a Hydrologic Characterization Technology for Fault Zones Phase II 2nd Report

    E-Print Network [OSTI]

    Karasaki, Kenzi

    2013-01-01T23:59:59.000Z

    Original seismic reflection survey interpretation for SR-1(Original seismic reflection survey interpretation for SR-1(seismic reflection profiling along three survey lines north and south of the LBNL site. One interpretation

  16. Development of a Hydrologic Characterization Technology for Fault Zones Phase II 2nd Report

    E-Print Network [OSTI]

    Karasaki, Kenzi

    2013-01-01T23:59:59.000Z

    Original seismic reflection survey interpretation for SR-1(Original seismic reflection survey interpretation for SR-1(and seismic reflection profiling along three survey lines north and south of the LBNL site. One interpretation

  17. Development of a Hydrologic Characterization Technology for Fault Zones Final Report

    E-Print Network [OSTI]

    Karasaki, Kenzi

    2014-01-01T23:59:59.000Z

    properties and silica diagenesis , PhD dissertation:F.T. , 2007 – Sediments, diagenesis, and sedimentary rocks,changes related to burial diagenesis and thermal alteration

  18. Geomechanical effects on CO{sub 2} leakage through fault zones during large-scale underground injection

    SciTech Connect (OSTI)

    Rinaldi, A.P.; Rutqvist, J.; Cappa, F.

    2013-09-01T23:59:59.000Z

    The importance of geomechanics—including the potential for faults to reactivate during large scale geologic carbon sequestration operations—has recently become more widely recognized. However, notwithstanding the potential for triggering notable (felt) seismic events, the potential for buoyancy-driven CO{sub 2} to reach potable groundwater and the ground surface is actually more important from public safety and storage-efficiency perspectives. In this context, this work extends the previous studies on the geomechanical modeling of fault responses during underground carbon dioxide injection, focusing on the short-term integrity of the sealing caprock, and hence on the potential for leakage of either brine or CO{sub 2} to reach the shallow groundwater aquifers during active injection. We consider stress/strain-dependent permeability and study the leakage through the fault zone as its permeability changes during a reactivation, also causing seismicity. We analyze several scenarios related to the volume of CO{sub 2} injected (and hence as a function of the overpressure), involving both minor and major faults, and analyze the profile risks of leakage for different stress/strain-permeability coupling functions. We conclude that whereas it is very difficult to predict how much fault permeability could change upon reactivation, this process can have a significant impact on the leakage rate. Moreover, our analysis shows that induced seismicity associated with fault reactivation may not necessarily open up a new flow path for leakage. Results show a poor correlation between magnitude and amount of fluid leakage, meaning that a single event is generally not enough to substantially change the permeability along the entire fault length. Consequently, even if some changes in permeability occur, this does not mean that the CO{sub 2} will migrate up along the entire fault, breaking through the caprock to enter the overlying aquifer.

  19. Association of coal metamorphism and hydrothermal mineralization in Rough Creek fault zone and Fluorspar District, Western Kentucky

    SciTech Connect (OSTI)

    Hower, J.C.; Fiene, F.L.; Trinkle, E.J.

    1983-09-01T23:59:59.000Z

    The ambient coal rank (metamorphism) of the Carboniferous coals in the Western Kentucky coalfield ranges from high volatile A bituminous (vitrinite maximum reflectance up to 0.75% R/sub max/) in the Webster syncline (Webster and southern Union Counties) to high volatile C bituminous (0.45 to 0.60% R/sub max/) over most of the remainder of the area. Anomalous patterns of metamorphism, however, have been noted in coals recovered from cores and mines in fault blocks of the Rough Creek fault zone and Fluorspar District. Coals in Gil-30 borehole (Rough Creek faults, Bordley Quadrangle, Union County) vary with no regard for vertical position, from high volatile C(0.55% R/sub max/) to high volatile A (0.89%R/sub max) bituminous. Examination of the upper Sturgis Formation (Missourian/Virgilian) coals revealed that the higher rank (generally above 0.75% R/sub max/) coals had vein mineral assemblages of sphalerite, twinned calcite, and ferroan dolomite. Lower rank coals had only untwinned calcite. Several sites in Webster County contain various coals (Well (No. 8) to Coiltwon (No. 14)) with vitrinite reflectances up to 0.83% R/sub max/ and associated sphalerite mineralization. Mississippian and Lower Pennsylvanian (Caseyville Formation Gentry coal) coals in the mineralized Fluorspar District have ranks to nearly medium volatile bituminous (1.03% R/sub max/). The regional rank trend exhibited by the fualt zones is generally higher rank than the surrounding areas. Sphalerite mineralization in itself is not unique within Illinois basin coals, but if it was partly responsible for the metamorphism of these coals, then the fluid temperature must have been higher within the above mentioned fault complexes.

  20. Microphysical Controls on the Strength and Transport Properties of Fault Zones

    E-Print Network [OSTI]

    French, Melodie Ellen Lynds

    2014-10-07T23:59:59.000Z

    (Chester and Higgs , 1992; Reches and Lockner , 2010; Reinen et al., 1994; Kohli et al., 2011). Clay-rich fault gouge is both weak and velocity-strengthening at sub-seismic rates, leading to the assumption that it is stable (Byerlee, 1978; Logan... of the San Andreas Fault, Journal of Geophysical Research: Solid Earth, 119, 17771802, doi:10.1002/2013JB010757. Copyright 2014 by the American Geophysical Union. 3 et al., 2010). At seismic velocities, however, experimental studies show that clay- bearing...

  1. Reaction localization and softening of texturally hardened mylonites in a reactivated fault zone, central Argentina

    E-Print Network [OSTI]

    Whitmeyer, Steven J.

    , central Argentina S. J. WHITMEYER1 * AND R. P. WINTSCH2 1 Department of Earth Sciences, Boston University, central Argentina, experienced multiple ductile deformation and faulting events that involved a variety of replacement reactions in a partially open system. Key words: Argentina; reaction localization; reactivation

  2. Protrusion of fore-arc mantle serpentinites together with HP and UHP rocks along major strike-slip fault zones, Northern Subduction Complex, Hispaniola

    E-Print Network [OSTI]

    -slip fault zones, Northern Subduction Complex, Hispaniola Benoit-Michel SAUMUR (bsaum014@uottawa.ca), KĂ©iko H in the Northern Subduction Complex of Hispaniola. We discuss the origins of the serpentinites and implications and inliers exposing Cretaceous to mid-Eocene basement in Northern Hispaniola are highlighted. Arc volcanic

  3. Characteristics of displacement transfer zones associated with thrust faults / by Arthur Francis Xavier O'Keefe

    E-Print Network [OSTI]

    O'Keefe, Arthur Francis Xavier

    1980-01-01T23:59:59.000Z

    back limb fault and then develops into s. drag fold on the underlying plate. The lower thrust dies by losing displacement until it becomes a fore-limb . hrust in a mino" anticline which plunges out under . he higher thrust (Figure 2). drag olo... is compared with two physical models developed by Gardner and Spang (1973). Their fi. st model involves a conical fold in the upper plate of the lowez- thzust with the point of the cone at the termination of the higher thrust . The fold then opens along...

  4. The Fabric of Clasts, Veins and Foliations within the Actively Creeping Zones of the San Andreas Fault at SAFOD: Implications for Deformation Processes

    E-Print Network [OSTI]

    Sills, David Wayne

    2012-02-14T23:59:59.000Z

    of Committee, Judith Chester Committee Members, Frederick Chester David Schechter Head of Department, Andreas Kronenberg December 2010 Major Subject: Geology iii ABSTRACT The Fabric of Clasts, Veins and Foliations within the Actively... Creeping Zones of the San Andreas Fault at SAFOD: Implications for Deformation Processes. (December 2010) David Wayne Sills, B.S., Sam Houston State University; M.S., Texas A&M University Chair of Advisory Committee: Dr. Judith Chester Recovered...

  5. Off-fault Damage Associated with a Localized Bend in the North Branch San Gabriel Fault, California

    E-Print Network [OSTI]

    Becker, Andrew 1987-

    2012-08-15T23:59:59.000Z

    Structures within very large displacement, mature fault zones, such as the North Branch San Gabriel Fault (NBSGF), are the product of a complex combination of processes. Off-fault damage within a damage zone and first-order geometric asperities...

  6. Chaotic breccia zones on the Pembroke Peninsula, South Wales: evidence for collapse into voids along dilational faults

    E-Print Network [OSTI]

    Woodcock, N. H.; Miller, A. V. M.; Woodhouse, C. D.

    2014-01-01T23:59:59.000Z

    .1 Terminology 109 110 The studied zones contain a range of breccias, particularly some with very large clasts (over 111 1 metre in diameter) referred to informally as megabreccias. Sedimentologically, such large-112 clast breccias would be termed boulder...

  7. Internal structure of the Kern Canyon Fault, California: a deeply exhumed strike-slip fault

    E-Print Network [OSTI]

    Neal, Leslie Ann

    2002-01-01T23:59:59.000Z

    Deformation and mineral alteration adjacent to a 2 km long segment of the Kern Canyon fault near Lake Isabella, California are studied to characterize the internal structure of the fault zone and to understand the development of fault structure...

  8. www.VadoseZoneJournal.org Vadose Zone Journal

    E-Print Network [OSTI]

    Vrugt, Jasper A.

    , biofuels, sustainability, and nanotechnology. Since its inception, Vadose Zone Journal has grown tre, multicomponent (reactive) transport modeling, radionuclide transport, multiphase flow, recharge in arid transport, remote sensing of vadose zone properties, hillslope hydrology, gas diffusion, environmental

  9. A combination of air and fluid drilling technique for zones of lost circulation in the Black Warrior Basin

    SciTech Connect (OSTI)

    Graves, S.L.; Niederhofer, J.D.; Beavers, W.M.

    1986-02-01T23:59:59.000Z

    Structural geologic information available for the coal-bearing formations in the Black Warrior basin documents the occurrence of numerous fault and fracture zones. A combination air/fluid drilling technique may be advantageous to coalbed-methane operations in this and other areas with similar hydrologic and geologic conditions. The authors successfully used this technique recently on coalbed-methane wells in Tuscaloosa County, AL.

  10. Borehole water and hydrologic model around the Nojima fault, SW Japan K. Fujimoto (1), A. Ueda (2), T. Ohtani (3), M.Takahashi (4), H. Ito (4), H. Tanaka (5),

    E-Print Network [OSTI]

    Boyer, Edmond

    The active fault drilling at Nojima Hirabayashi after the 1995 Hyogoken-nanbu (Kobe) earthquake (MJMA = 7 of fault and fluid. The borehole intersected the fault gouge of the Nojima fault at a depth interval of 623 the origin of fluid. The following conclusions were obtained. (1) The ionic and isotopic compositions

  11. Induced seismicity within geologic carbon sequestration projects: Maximum earthquake magnitude and leakage potential from undetected faults

    E-Print Network [OSTI]

    Mazzoldi, A.P.

    2014-01-01T23:59:59.000Z

    data from reservoir and outcrop samples suggest a general decrease in fault-zone permeability with increasing shale

  12. Office of Hydrologic Development Hydrology Laboratory

    E-Print Network [OSTI]

    April 2010 Office of Hydrologic Development Hydrology Laboratory Strategic Science Plan #12;OHD This Strategic Science Plan (Plan) establishes the directions for research in hy- drology at the Hydrology Laboratory of the Office of Hydrologic Development. It first establishes a cross-reference between the Plan

  13. Hydrologically Sensitive Areas: Variable Source Area Hydrology

    E-Print Network [OSTI]

    Walter, M.Todd

    Hydrologically Sensitive Areas: Variable Source Area Hydrology Implications for Water Quality Risk hydrology was developed and applied to the New York City (NYC) water supply watersheds. According and are therefore hydrologically sensitive with respect to their potential to transport contaminants to perennial

  14. Fault interaction near Hollister, California

    SciTech Connect (OSTI)

    Mavko, G.M.

    1982-09-10T23:59:59.000Z

    A numerical model is used to study fault stress slip near Hollister, California. The geometrically complex system of interacting faults, including the San Andreas, Calaveras, Sargent, and Busch faults, is approximated with a two-dimensional distribution of short planar fault segments in an elastic medium. The steady stress and slip rate are simulated by specifying frictional strength and stepping the remote stress ahead in time. The resulting computed fault stress is roughly proportional to the observed spatial density of small earthquakes, suggesting that the distinction between segments characterized by earthquakes and those with aseismic creep results, in part, from geometry. A nonsteady simulation is made by introducing, in addition, stress drops for individual moderate earthquakes. A close fit of observed creep with calculated slip on the Calaveras and San Andreas faults suggests that many changes in creep rate (averaged over several months) are caused by local moderate earthquakes. In particular, a 3-year creep lag preceding the August 6, 1979, Coyote Lake earthquake on the Calaveras fault seems to have been a direct result of the November 28, 1974, Thanksgiving Day earthquake on the Busch fault. Computed lags in slip rate preceding some other moderate earthquakes in the area are also due to earlier earthquakes. Although the response of the upper 1 km of the fault zone may cause some individual creep events and introduce delays in others, the long-term rate appears to reflect deep slip.

  15. A combination air and fluid drilling technique for zones of lost circulation in the Black Warrior Basin

    SciTech Connect (OSTI)

    Graves, S.L.; Beavers, W.M.; Niederhofer, J.D.

    1984-05-01T23:59:59.000Z

    During the drilling of coalbed methane wells in the Black Warrior Basin, the possibility of penetrating a highly permeable fault or fracture zone is likely. These fracture zones, and occasionally the faults, are the source of large quantities of water. When air is being used as the drilling medium, problems may arise with producing and disposing of the formation water. When rotary drilling with fluid, loss of returns may also become a problem. The use of conventional lost circulation materials have been demonstrated-in this situation--to be both ineffective and expensive. Also, lost circulation materials substantially reduce the effective secondary permeability of the coal seams, severely limiting the ultimate methane production potential of the well. If the wellbore is generally competent, one inexpensive solution to the problem is to drill with air to a point where surface recovery tanks are full of produced formation water. Drilling can continue by switching to conventional fluid drilling until the surface storage tanks are pumped dry. This process of alternating fluid and air drilling can be continued until reaching total depth. Structural geologic information, available for the coal-bearing formations in the Black Warrior Basin, documents the occurrence of numerous fault and fracture zones. A combination air and fluid drilling technique may prove to be advantageous to coalbed methane operations in this and other areas with similar hydrologic and geologic conditions. Recently, this technique was successfully utilized on TRW, Inc., coalbed methane wells in Tuscaloosa County, Alabama.

  16. Oil and Gas CDT Bots in Rocks: Intelligent Rock Deformation for Fault Rock

    E-Print Network [OSTI]

    Henderson, Gideon

    Heriot-Watt University, Institute of Petroleum Engineering Supervisory Team · Dr Helen Lewis, Heriot://www.pet.hw.ac.uk/staff-directory/jimsomerville.htm Key Words Nano/Micro sensors; faults; fault zones; geomechanics; rock mechanics; rock deformation-deformed equivalent, a different lab-deformed example and a geomechanical simulation of a fault zone showing permanent

  17. HYDROLOGICAL PROCESSES Hydrol. Process. 23, 29022914 (2009)

    E-Print Network [OSTI]

    Kienzle, Stefan W.

    2009-01-01T23:59:59.000Z

    modelling effort indicate that hyporheic and dead zone heat fluxes are important, whereas solar radiationHYDROLOGICAL PROCESSES Hydrol. Process. 23, 2902­2914 (2009) Published online 24 July 2009 in Wiley the significance of individual heat fluxes within streams with an emphasis on testing (i.e. identification

  18. Seismoelectric Imaging of a Shallow Fault System Employing Fault Guided Waves

    E-Print Network [OSTI]

    Cohrs, Frelynn Joseph Reese

    2012-07-16T23:59:59.000Z

    Independent sets of reflection seismic and seismoelectric data were collected, processed, and interpreted with the aim of generating and studying guided waves within a fault zone. While seismic surveys have recently been utilized to investigate...

  19. Collateral damage: Evolution with displacement of fracture distribution and secondary fault strands in fault

    E-Print Network [OSTI]

    Savage, Heather M.

    Collateral damage: Evolution with displacement of fracture distribution and secondary fault strands in fault damage zones Heather M. Savage1,2 and Emily E. Brodsky1 Received 22 April 2010; revised 10 of fracture distributions as a function of displacement to determine whether damage around small and large

  20. Physiochemical Evidence of Faulting Processes and Modeling of Fluid in Evolving Fault Systems in Southern California

    SciTech Connect (OSTI)

    Boles, James [Professor

    2013-05-24T23:59:59.000Z

    Our study targets recent (Plio-Pleistocene) faults and young (Tertiary) petroleum fields in southern California. Faults include the Refugio Fault in the Transverse Ranges, the Ellwood Fault in the Santa Barbara Channel, and most recently the Newport- Inglewood in the Los Angeles Basin. Subsurface core and tubing scale samples, outcrop samples, well logs, reservoir properties, pore pressures, fluid compositions, and published structural-seismic sections have been used to characterize the tectonic/diagenetic history of the faults. As part of the effort to understand the diagenetic processes within these fault zones, we have studied analogous processes of rapid carbonate precipitation (scaling) in petroleum reservoir tubing and manmade tunnels. From this, we have identified geochemical signatures in carbonate that characterize rapid CO2 degassing. These data provide constraints for finite element models that predict fluid pressures, multiphase flow patterns, rates and patterns of deformation, subsurface temperatures and heat flow, and geochemistry associated with large fault systems.

  1. ELSEVIER Journal of Hydrology 199 (1997) 88-120 Linking the hydrologic and biogeochemical controls of nitrogen

    E-Print Network [OSTI]

    McDonnell, Jeffrey J.

    -stream saturated zones, centering on stream environments of the northern, teml~rate-forested zone. N retention and hydrodynamic scenarios relating N biogeochemistry and its response to hydrologic events (of both varying-state in terms of biological aggradation and N demand (Sullivan, 1993). The environmental consequences

  2. Analysis of the growth of strike-slip faults using effective medium theory

    SciTech Connect (OSTI)

    Aydin, A.; Berryman, J.G.

    2009-10-15T23:59:59.000Z

    Increases in the dimensions of strike-slip faults including fault length, thickness of fault rock and the surrounding damage zone collectively provide quantitative definition of fault growth and are commonly measured in terms of the maximum fault slip. The field observations indicate that a common mechanism for fault growth in the brittle upper crust is fault lengthening by linkage and coalescence of neighboring fault segments or strands, and fault rock-zone widening into highly fractured inner damage zone via cataclastic deformation. The most important underlying mechanical reason in both cases is prior weakening of the rocks surrounding a fault's core and between neighboring fault segments by faulting-related fractures. In this paper, using field observations together with effective medium models, we analyze the reduction in the effective elastic properties of rock in terms of density of the fault-related brittle fractures and fracture intersection angles controlled primarily by the splay angles. Fracture densities or equivalent fracture spacing values corresponding to the vanishing Young's, shear, and quasi-pure shear moduli were obtained by extrapolation from the calculated range of these parameters. The fracture densities or the equivalent spacing values obtained using this method compare well with the field data measured along scan lines across the faults in the study area. These findings should be helpful for a better understanding of the fracture density/spacing distribution around faults and the transition from discrete fracturing to cataclastic deformation associated with fault growth and the related instabilities.

  3. The Owens Valley Fault Zone Eastern California and Surface Faulting...

    Open Energy Info (EERE)

    base of the Alabama Hills and follows the floor of Owens Valley northward to the Poverty Hills, where it steps 3 km to the left and continues northwest across Crater Mountain...

  4. The Owens Valley Fault Zone Eastern California and Surface Faulting

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f <MaintainedInformation 2EnergyCityGreen DataThe NeedlesThe

  5. Hydrologic Modeling Capabilities

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

    Management Programs has both experience and technical knowledge to use and develop Earth systems models. Hydrological Modeling Models are simplified representations of...

  6. The northwest extension of the Meers Fault in southwestern Oklahoma

    E-Print Network [OSTI]

    Cetin, Hasan

    1991-01-01T23:59:59.000Z

    + t '+ + + ~et t 30 mt ~ 39 ~ 40 mt ~ 49 a 50 mt 59 060 m& 69 O20 mts29 26 26 ASZ ? ANNA SEISMIC ZONE ES ? ENOLA SWARM KRF ? KENTUCKY RIVER FAULT MF ? MEERS FAULT MU ? MONROE UPLIFT NM ? NEW MADRID NU ? NEMAHA UPLIFT PSD ? PIERRE, SOUTH DAKOTA WVF...

  7. Late quaternary activity of the Laguna Salada fault in northern Baja California, Mexico

    E-Print Network [OSTI]

    Mueller, Karl

    northwest-striking dextral and oblique-slip faults. These include the Imperial, Cerro Prieto, Cucapa, Im- perial, and Cerro Prieto dextral faults. Re- straining stepovers along active dextral fault zones present in the Imperial and Mexicali Valleys include the Brawley and Cerro Pri- eto spreading centers (Fig

  8. Colorado Regional Faults

    SciTech Connect (OSTI)

    Hussein, Khalid

    2012-02-01T23:59:59.000Z

    Citation Information: Originator: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Originator: Colorado Geological Survey (CGS) Publication Date: 2012 Title: Regional Faults Edition: First Publication Information: Publication Place: Earth Science & Observation Center, Cooperative Institute for Research in Environmental Science, University of Colorado, Boulder Publisher: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Description: This layer contains the regional faults of Colorado Spatial Domain: Extent: Top: 4543192.100000 m Left: 144385.020000 m Right: 754585.020000 m Bottom: 4094592.100000 m Contact Information: Contact Organization: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Contact Person: Khalid Hussein Address: CIRES, Ekeley Building Earth Science & Observation Center (ESOC) 216 UCB City: Boulder State: CO Postal Code: 80309-0216 Country: USA Contact Telephone: 303-492-6782 Spatial Reference Information: Coordinate System: Universal Transverse Mercator (UTM) WGS’1984 Zone 13N False Easting: 500000.00000000 False Northing: 0.00000000 Central Meridian: -105.00000000 Scale Factor: 0.99960000 Latitude of Origin: 0.00000000 Linear Unit: Meter Datum: World Geodetic System 1984 (WGS ’984) Prime Meridian: Greenwich Angular Unit: Degree Digital Form: Format Name: Shape file

  9. The Starr fault system of southeastern Ohio

    SciTech Connect (OSTI)

    Brannock, M.C. (Qauker State Corp., Belpre, OH (United States))

    1993-08-01T23:59:59.000Z

    The Starr fault system is a series of east-west-trending faults located in southeastern Ohio. This fault system was discovered by mapping the anomalous sedimentary sequence of the [open quotes]Big Lime[close quotes]. The Big Lime is a driller's term for the stratigraphic section that includes the Lower Devonian Onondaga through Middle Silurian Lockport formations. The use of trend-surface analysis identified the probable fault orientation, which was then verified by seismic. The system is a series of high-angle faults, originating in the Precambrian, that occur along a narrow corridor traversing several townships. Analysis of the sedimentary section preserved by faulting indicates fault movement after the deposition of the Bass Island Formation, which was followed by a regional unconformity that removed the Bass Islands and a part of the upper Salina Formation. The Onondaga subsequently was deposited, masking fault movement evidence in the shallower formations. Some minor movement occurred later, as evidenced by the expansion in the Devonian shale sequence. The geometry of the fault system and other data suggest a pattern similar to the Albio-Scipio field of southern Michigan. A group of wells were drilled to test the Ordovician Trenton and Black River formations to determine the existence of secondary dolomite, which could be a potential reservoir. Secondary dolomite was encountered, but no commercial hydrocarbons were found in either the Trenton or Black River. Other formations produced hydrocarbons and water from fractured zones that were not known for this behavior. Other probable fault systems in southern Ohio, identified by using the same mapping techniques, may provide deeper targets for future drilling.

  10. Analysis of Hydrologic Properties Data

    SciTech Connect (OSTI)

    L. Pan

    2004-10-04T23:59:59.000Z

    This analysis report describes the methods used to determine hydrologic properties based on the available field data from the unsaturated zone (UZ) at Yucca Mountain, Nevada. The technical scope, content, and management of this analysis report are described in the planning document ''Technical Work Plan for: Unsaturated Zone Flow Analysis and Model Report Integration'' (BSC 2004 [DIRS 169654], Sections 2, 4, and 8). Fracture and matrix properties are developed by analyzing available survey data from the Exploratory Studies Facility (ESF), the Enhanced Characterization of Repository Block (ECRB) Cross-Drift, and/or boreholes; air-injection testing data from surface boreholes and from boreholes in the ESF; and data from laboratory testing of core samples. In addition, the report ''Geologic Framework Model'' (GFM2000) (BSC 2004 [DIRS 170029]) also serves as a source report by providing the geological framework model of the site. This report is a revision of the model report under the same title (BSC 2003 [DIRS 161773]), which in turn superceded the analysis report under the same title. The principal purpose of this work is to provide representative uncalibrated estimates of fracture and matrix properties for use in the model report Calibrated Properties Model. The term ''uncalibrated'' is used to distinguish the properties or parameters estimated in this report from those obtained from the inversion modeling used in ''Calibrated Properties Model''. The present work also provides fracture geometry properties for generating dual-permeability grids as documented in the scientific analyses report, ''Development of Numerical Grids for UZ Flow and Transport Modeling''.

  11. Microstructures and Rheology of a Limestone-Shale Thrust Fault 

    E-Print Network [OSTI]

    Wells, Rachel Kristen

    2011-02-22T23:59:59.000Z

    thick calcite and shale shear zone suggest that calcite, not shale, controlled the rheology of the shear zone rocks. While shale deformed brittley, plasticity-induced fracturing in calcite resulted in ultrafine-grained (<1.0 ?m) fault rocks that deformed...

  12. Post-Cretaceous faulting at head of Mississippi embayment

    SciTech Connect (OSTI)

    Nelson, W.J. (Illinois State Geological Survey, Champaign, IL (United States)); Harrison, R.W. (Geological Survey, Reston, VA (United States))

    1993-03-01T23:59:59.000Z

    Recent mapping in southernmost Illinois and southeastern Missouri has revealed numerous faults that displace Cretaceous and Tertiary strata. Units as young as the Pliocene-Pleistocene( ) Mounds Gravel are deformed; some faults possibly displace Quaternary sediments. The faults strike northeast, dip nearly vertically, and exhibit characteristics of dextral strike-slip. Pull-apart grabens occur along right-stepping fault strands, they contain chaotically jumbled blocks of Paleozoic, Cretaceous and Tertiary rocks downdropped as much as 800 m relative to wall rocks. Faults at the head of the Mississippi embayment probably originated during Cambrian rifting (Reelfoot rift) and have a long, complex history of reactivation under different stress fields. Some faults are on strike with faults in the New Madrid seismic zone. Kinematics of post-Cretaceous displacements fit the contemporary stress regime of ENE-WSW compression. Similar fault orientations and kinematics, as well as close proximity, suggest a close link between faulting at the head of the embayment and ongoing tectonism in the New Madrid seismic zone.

  13. Fault Controlled | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOEHazelPennsylvania: EnergyExolisFairway,FarmersFastcap SystemsShear Zone:Fault

  14. AGU Monograph, Plate Boundary Zones, in press. Page 1 Crustal Block Rotations and Plate Coupling

    E-Print Network [OSTI]

    McCaffrey, Robert

    AGU Monograph, Plate Boundary Zones, in press. Page 1 Crustal Block Rotations and Plate Coupling that considering both block rotations and fault locking significantly improves the fit to the data over models by locking on #12;AGU Monograph, Plate Boundary Zones, in press. Page 2 block-bounding faults and apply

  15. Geophysical Monitoring of Hydrological and Biogeochemical

    E-Print Network [OSTI]

    Hubbard, Susan

    Geophysical Monitoring of Hydrological and Biogeochemical Transformations Associated with Cr explored the use of geophysical approaches for monitoring the spatiotemporal distribution of hydrological first integrated hydrological wellbore and geophysical tomographic data sets to estimate hydrological

  16. Experimental wrench faulting at confining pressure

    E-Print Network [OSTI]

    Bartlett, Wendy Louise

    1980-01-01T23:59:59.000Z

    along the precut, resembling the "flower or palm tree" structure noted by Sylvester and Smith (1976), in the Salton Sea area, California. The bounding fault above the down-dropped block dips at a lower angle to the forcing block-veneer interface than..., the oeometries, ori- gins, and sequence of development of structural elements comprising the fault zones. Specimens (2. 8 or 3. 4 x 3. 4 x 9. 4 cm) are loaded parallel to their longest dimension, at an average displacement rate -3 -1 of 7. 3 x 10 cm sec...

  17. Earthquake Rupture at Focal Depth, Part I: Structure and Rupture of the Pretorius Fault, TauTona Mine, South Africa

    E-Print Network [OSTI]

    Ze'ev, Reches

    Tona Mine, South Africa V. HEESAKKERS,1,2 S. MURPHY,1,3 and Z. RECHES 1 Abstract--We analyze the structure of the Archaean Pretorius fault in TauTona mine, South Africa, as well as the rupture-zone that recently, South Africa 2011, this volume). Key words: Brittle faulting, fault reactivation, earthquake mechanics

  18. Water Resources: Hydraulics and Hydrology

    E-Print Network [OSTI]

    US Army Corps of Engineers

    Water Resources: Hydraulics and Hydrology Interview with Margaret S. Petersen #12;This manuscript RESOURCES: HYDRAULICS AND HYDROLOGY #12;Approved for public release distribution IS unlimited. #12;Preface The United States Army Corps of Engineers significantly contributed to hydraulic and hydrologic engineering

  19. 1, 497531, 2004 Regional hydrology

    E-Print Network [OSTI]

    Boyer, Edmond

    BGD 1, 497­531, 2004 Regional hydrology controls stream microbial biofilms T. J. Battin et al hydrology controls stream microbial biofilms: evidence from a glacial catchment T. J. Battin1, , A. Wille2@pflaphy.pph.univie.ac.at) 497 #12;BGD 1, 497­531, 2004 Regional hydrology controls stream microbial biofilms T. J. Battin et al

  20. HYDROLOGICAL PROCESSES INVITED COMMENTARY

    E-Print Network [OSTI]

    Kirchner, James W.

    , kinematic waves, transmissivity feedback, exchange between matrix and macropores, and so forth (Beven, 1989 these observations in the following way may prove useful. Paradox 1: Rapid Mobilization of Old Water The hydrology of old water' paradox, exemplified by Figure 1. In many small catchments, streamflow responds promptly

  1. Influence of faults on groundwater flow and transport at YuccaMountain, Nevada

    SciTech Connect (OSTI)

    Cohen, Andrew J.B.; Sitar, Nicholas

    1999-10-07T23:59:59.000Z

    Numerical simulations of groundwater flow at Yucca Mountain, Nevada are used to investigate how faults influence groundwater flow pathways and regional-scale macrodispersion. The 3-D model has a unique grid block discretization that facilitates the accurate representation of the complex geologic structure present in faulted formations. Each hydrogeologic layer is discretized into a single layer of irregular and dipping grid blocks, and faults are discretized such that they are laterally continuous and varied in displacement varies along strike. In addition, the presence of altered fault zones is explicitly modeled, as appropriate. Simulations show that upward head gradients can be readily explained by the geometry of hydrogeologic layers, the variability of layer permeabilities, and the presence of permeable fault zones or faults with displacement only, not necessarily by upwelling from a deep aquifer. Large-scale macrodispersion results from the vertical and lateral diversion of flow near the contact of high- and low-permeability layers at faults, and from upward flow within high-permeability fault zones. Conversely, large-scale channeling can occur as a result of groundwater flow into areas with minimal fault displacement. Contaminants originating at the water table can flow in a direction significantly different from that of the water table gradient, and isolated zones of contaminants can occur at the water table downgradient. By conducting both 2-D and 3-D simulations, we show that the 2-D cross-sectional models traditionally used to examine flow in faulted formations may not be appropriate. In addition, the influence of a particular type of fault cannot be generalized; depending on the location where contaminants enter the saturated zone, faults may either enhance or inhibit vertical dispersion.

  2. Fault tolerant pulse synchronization 

    E-Print Network [OSTI]

    Deconda, Keerthi

    2009-05-15T23:59:59.000Z

    FFC n=4 orig alg n=4 ft alg n=7 orig alg n=7 ft alg n=10 orig alg n=10 ft alg 24 (a) n=4, f=1. (b) n=7, f=2. Fig. 5: Convergence Time with No Jump faults. 0 50 100 150 200 250 70 100 250 500 Tim e to co nv erg e FFC orig alg: no faults... orig alg: NoJump faults ft alg:NoJump faults 0 50 100 150 200 250 300 350 400 450 70 100 250 500 Tim e to co nv erg e FFC orig alg: no faults orig alg: NoJump faults ft alg:NoJump faults 25 (c) n=10, f=3. Fig. 5 (Continued) Fig. 5(a...

  3. Characterization of Quaternary and suspected Quaternary faults, regional studies, Nevada and California

    SciTech Connect (OSTI)

    Anderson, R.E.; Bucknam, R.C.; Crone, A.J.; Haller, K.M.; Machette, M.N.; Personius, S.F.; Barnhard, T.P.; Cecil, M.J.; Dart, R.L.

    1995-12-31T23:59:59.000Z

    This report presents the results of geologic studies that help define the Quaternary history of selected faults in the region around Yucca Mountain, Nevada. These results are relevant to the seismic-design basis of a potential nuclear waste repository at Yucca Mountain. The relevancy is based, in part, on a need for additional geologic data that became apparent in ongoing studies that resulted in the identification of 51 relevant and potentially relevant individual and compound faults and fault zones in the 100-km-radius region around the Yucca Mountain site. Geologic data used to characterize the regional faults and fault zones as relevant or potentially relevant seismic sources includes age and displacement information, maximum fault lengths, and minimum distances between the fault and the Yucca Mountain site. For many of the regional faults, no paleoseismic field studies have previously been conducted, and age and displacement data are sparse to nonexistent. In November 1994, the Branch of Earthquake and Landslide Hazards entered into two Memoranda of Agreement with the Yucca Mountain Project Branch to conduct field reconnaissance, analysis, and interpretation of six relevant and six potentially relevant regional faults. This report describes the results of study of those faults exclusive of those in the Pahrump-Stewart Valley-Ash Meadows-Amargosa Valley areas. We also include results of a cursory study of faults on the west flank of the Specter Range and in the northern part of the Last Chance Range. A four-phase strategy was implemented for the field study.

  4. Analysis of Fault Permeability Using Mapping and Flow Modeling, Hickory Sandstone Aquifer, Central Texas

    SciTech Connect (OSTI)

    Nieto Camargo, Jorge E., E-mail: jorge.nietocamargo@aramco.com; Jensen, Jerry L., E-mail: jjensen@ucalgary.ca [University of Calgary, Department of Chemical and Petroleum Engineering (Canada)

    2012-09-15T23:59:59.000Z

    Reservoir compartments, typical targets for infill well locations, are commonly created by faults that may reduce permeability. A narrow fault may consist of a complex assemblage of deformation elements that result in spatially variable and anisotropic permeabilities. We report on the permeability structure of a km-scale fault sampled through drilling a faulted siliciclastic aquifer in central Texas. Probe and whole-core permeabilities, serial CAT scans, and textural and structural data from the selected core samples are used to understand permeability structure of fault zones and develop predictive models of fault zone permeability. Using numerical flow simulation, it is possible to predict permeability anisotropy associated with faults and evaluate the effect of individual deformation elements in the overall permeability tensor. We found relationships between the permeability of the host rock and those of the highly deformed (HD) fault-elements according to the fault throw. The lateral continuity and predictable permeability of the HD fault elements enhance capability for estimating the effects of subseismic faulting on fluid flow in low-shale reservoirs.

  5. Weather Radar and Hydrology 1 Influence of rainfall spatial variability on hydrological modelling: a

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Weather Radar and Hydrology 1 Influence of rainfall spatial variability on hydrological modelling variability as well as characteristics and hydrological behavior of catchments, we have proceeded simulator and a distributed hydrological model (with four production functions and a distributed transfer

  6. Localization instability and the origin of regularly-spaced faults in planetary lithospheres

    E-Print Network [OSTI]

    Montési, Laurent Gilbert Joseph, 1973-

    2002-01-01T23:59:59.000Z

    Brittle deformation is not distributed uniformly in planetary lithospheres but is instead localized on faults and ductile shear zones. In some regions such as the Central Indian Basin or martian ridged plains, localized ...

  7. Oil and Gas CDT Predicting fault permeability at depth: incorporating natural

    E-Print Network [OSTI]

    Henderson, Gideon

    Oil and Gas CDT Predicting fault permeability at depth: incorporating natural permeability controls on fluid flow in oil and gas reservoirs. Fault zones are composed of many deformation elements will receive 20 weeks bespoke, residential training of broad relevance to the oil and gas industry: 10 weeks

  8. Tertiary strike-slip faulting in southeastern Mongolia and implications for Asian tectonics

    E-Print Network [OSTI]

    Johnson, Cari

    Tertiary strike-slip faulting in southeastern Mongolia and implications for Asian tectonics L Geologic maps have long portrayed the Late Cretaceous­Recent geologic history of southeastern Mongolia of the East Gobi basin in southeastern Mongolia (Figs. 1 and 2). This corridor, the East Gobi Fault Zone (EGFZ

  9. Figure 1. Hydrologic Information System Overarching Vision. Data Interoperability in the Hydrologic Sciences

    E-Print Network [OSTI]

    Tarboton, David

    Sciences The CUAHSI Hydrologic Information System David G Tarboton1 , David Maidment2 , Ilya Zaslavsky3 Sciences. Hydrologic Information Systems (HIS) are part of this infrastructure. Hydrologic information--Hydrologic Information System; Web services; Data Model; Hydrology I. INTRODUCTION The advancement of hydrologic science

  10. Fault simulation and test generation for small delay faults

    E-Print Network [OSTI]

    Qiu, Wangqi

    2007-04-25T23:59:59.000Z

    Delay faults are an increasingly important test challenge. Traditional delay fault models are incomplete in that they model only a subset of delay defect behaviors. To solve this problem, a more realistic delay fault model has been developed which...

  11. Optimal fault location

    E-Print Network [OSTI]

    Knezev, Maja

    2009-05-15T23:59:59.000Z

    are triggered. Protection system consisting of protection relays and circuit breakers (CBs) will operate in order to de-energize faulted line. Different Intelligent Electronic Devices (IEDs) located in substations for the purpose of monitoring... in the control center by an operator who will mark fault event in a spreadsheet and inform other staff responsible for dealing with fault analysis and repair such as protection group or maintenance respectively. Protective relaying staff will be ready...

  12. Optimal fault location

    E-Print Network [OSTI]

    Knezev, Maja

    2008-10-10T23:59:59.000Z

    are triggered. Protection system consisting of protection relays and circuit breakers (CBs) will operate in order to de-energize faulted line. Different Intelligent Electronic Devices (IEDs) located in substations for the purpose of monitoring... in the control center by an operator who will mark fault event in a spreadsheet and inform other staff responsible for dealing with fault analysis and repair such as protection group or maintenance respectively. Protective relaying staff will be ready...

  13. Evaluating Hydrology Preservation of Simplified Terrain Representations

    E-Print Network [OSTI]

    Varela, Carlos

    Evaluating Hydrology Preservation of Simplified Terrain Representations Ph. D. Student: Christopher captures the hydrology is important for determining the effectiveness of a terrain simplification technique also present a novel ter- rain simplification algorithm based on the compression of hydrology features

  14. Evaluating Hydrology Preservation of Simplified Terrain Representations

    E-Print Network [OSTI]

    Franklin, W. Randolph

    Evaluating Hydrology Preservation of Simplified Terrain Representations Jonathan Muckella , Marcus network. A quan- titative measurement of how accurately a drainage network captures the hydrology to preserve the important hydrology features. This method and other simplification schemes are then evaluated

  15. Teaching Estuarine Hydrology with Online Data

    E-Print Network [OSTI]

    Schoellhamer, David H.

    2009-01-01T23:59:59.000Z

    Watershed . Coastal ocean . Hydrology . Education . SanSchoellhamer, D.H. 2007a. Hydrology of San Francisco Bay andSchoellhamer, D.H. 2007b. Hydrology of San Francisco Bay and

  16. Unsaturated flow and transport through a fault embedded in fractured welded tuff

    E-Print Network [OSTI]

    Hu, Qinhong "Max"

    -matrix interactions, the nonlinearity of unsat- urated flow, and the heterogenities in the hydrological properties of lithium bromide)) was released along the fault over a period of 9 days, 7 months after the start of water- rated fractured rock (i.e., matrix and fracture flow, and fracture-matrix interactions) is of interest

  17. Solar system fault detection

    DOE Patents [OSTI]

    Farrington, R.B.; Pruett, J.C. Jr.

    1984-05-14T23:59:59.000Z

    A fault detecting apparatus and method are provided for use with an active solar system. The apparatus provides an indication as to whether one or more predetermined faults have occurred in the solar system. The apparatus includes a plurality of sensors, each sensor being used in determining whether a predetermined condition is present. The outputs of the sensors are combined in a pre-established manner in accordance with the kind of predetermined faults to be detected. Indicators communicate with the outputs generated by combining the sensor outputs to give the user of the solar system and the apparatus an indication as to whether a predetermined fault has occurred. Upon detection and indication of any predetermined fault, the user can take appropriate corrective action so that the overall reliability and efficiency of the active solar system are increased.

  18. Motion and evolution of the Chaochou Fault, Southern Taiwan

    E-Print Network [OSTI]

    Hassler, Lauren E.

    2005-11-01T23:59:59.000Z

    has been called the Chuchi Transfer Fault Zone (Lacombe et al., 2001). This boundary represents a major change in the character of seismicity in Taiwan. Although the nature of this boundary is not known, it may represent the southern extent of direct...

  19. Three-dimensional numerical modeling of the influence of faults on groundwater flow at Yucca Mountain, Nevada

    SciTech Connect (OSTI)

    Cohen, Andrew J.B.

    1999-06-01T23:59:59.000Z

    Numerical simulations of groundwater flow at Yucca Mountain, Nevada are used to investigate how the faulted hydrogeologic structure influences groundwater flow from a proposed high-level nuclear waste repository. Simulations are performed using a 3-D model that has a unique grid block discretization to accurately represent the faulted geologic units, which have variable thicknesses and orientations. Irregular grid blocks enable explicit representation of these features. Each hydrogeologic layer is discretized into a single layer of irregular and dipping grid blocks, and faults are discretized such that they are laterally continuous and displacement varies along strike. In addition, the presence of altered fault zones is explicitly modeled, as appropriate. The model has 23 layers and 11 faults, and approximately 57,000 grid blocks and 200,000 grid block connections. In the past, field measurement of upward vertical head gradients and high water table temperatures near faults were interpreted as indicators of upwelling from a deep carbonate aquifer. Simulations show, however, that these features can be readily explained by the geometry of hydrogeologic layers, the variability of layer permeabilities and thermal conductivities, and by the presence of permeable fault zones or faults with displacement only. In addition, a moderate water table gradient can result from fault displacement or a laterally continuous low permeability fault zone, but not from a high permeability fault zone, as others postulated earlier. Large-scale macrodispersion results from the vertical and lateral diversion of flow near the contact of high and low permeability layers at faults, and from upward flow within high permeability fault zones. Conversely, large-scale channeling can occur due to groundwater flow into areas with minimal fault displacement. Contaminants originating at the water table can flow in a direction significantly different than that of the water table gradient, and isolated zones of contaminants will occur at the water table downgradient. This behavior is not predicted by traditional models of contaminant transport. In addition, the influence of a particular type of fault cannot be generalized; depending on the location where contaminants enter the saturated zone, faults may either enhance of inhibit vertical dispersion.

  20. Modeling of coulpled deformation and permeability evolution during fault reactivation induced by deep underground injection of CO2

    SciTech Connect (OSTI)

    Cappa, F.; Rutqvist, J.

    2010-06-01T23:59:59.000Z

    The interaction between mechanical deformation and fluid flow in fault zones gives rise to a host of coupled hydromechanical processes fundamental to fault instability, induced seismicity, and associated fluid migration. In this paper, we discuss these coupled processes in general and describe three modeling approaches that have been considered to analyze fluid flow and stress coupling in fault-instability processes. First, fault hydromechanical models were tested to investigate fault behavior using different mechanical modeling approaches, including slip interface and finite-thickness elements with isotropic or anisotropic elasto-plastic constitutive models. The results of this investigation showed that fault hydromechanical behavior can be appropriately represented with the least complex alternative, using a finite-thickness element and isotropic plasticity. We utilized this pragmatic approach coupled with a strain-permeability model to study hydromechanical effects on fault instability during deep underground injection of CO{sub 2}. We demonstrated how such a modeling approach can be applied to determine the likelihood of fault reactivation and to estimate the associated loss of CO{sub 2} from the injection zone. It is shown that shear-enhanced permeability initiated where the fault intersects the injection zone plays an important role in propagating fault instability and permeability enhancement through the overlying caprock.

  1. Thermal-Hydrological Sensitivity Analysis of Underground Coal Gasification

    SciTech Connect (OSTI)

    Buscheck, T A; Hao, Y; Morris, J P; Burton, E A

    2009-10-05T23:59:59.000Z

    This paper presents recent work from an ongoing project at Lawrence Livermore National Laboratory (LLNL) to develop a set of predictive tools for cavity/combustion-zone growth and to gain quantitative understanding of the processes and conditions (natural and engineered) affecting underground coal gasification (UCG). We discuss the application of coupled thermal-hydrologic simulation capabilities required for predicting UCG cavity growth, as well as for predicting potential environmental consequences of UCG operations. Simulation of UCG cavity evolution involves coupled thermal-hydrological-chemical-mechanical (THCM) processes in the host coal and adjoining rockmass (cap and bedrock). To represent these processes, the NUFT (Nonisothermal Unsaturated-saturated Flow and Transport) code is being customized to address the influence of coal combustion on the heating of the host coal and adjoining rock mass, and the resulting thermal-hydrological response in the host coal/rock. As described in a companion paper (Morris et al. 2009), the ability to model the influence of mechanical processes (spallation and cavity collapse) on UCG cavity evolution is being developed at LLNL with the use of the LDEC (Livermore Distinct Element Code) code. A methodology is also being developed (Morris et al. 2009) to interface the results of the NUFT and LDEC codes to simulate the interaction of mechanical and thermal-hydrological behavior in the host coal/rock, which influences UCG cavity growth. Conditions in the UCG cavity and combustion zone are strongly influenced by water influx, which is controlled by permeability of the host coal/rock and the difference between hydrostatic and cavity pressure. In this paper, we focus on thermal-hydrological processes, examining the relationship between combustion-driven heat generation, convective and conductive heat flow, and water influx, and examine how the thermal and hydrologic properties of the host coal/rock influence those relationships. Specifically, we conducted a parameter sensitivity analysis of the influence of thermal and hydrological properties of the host coal, caprock, and bedrock on cavity temperature and steam production.

  2. Evaluation of the location and recency of faulting near prospective surface facilities in Midway Valley, Nye County, Nevada

    SciTech Connect (OSTI)

    Swan, F.H.; Wesling, J.R.; Angell, M.M.; Thomas, A.P.; Whitney, J.W.; Gibson, J.D.

    2002-01-17T23:59:59.000Z

    Evaluation of surface faulting that may pose a hazard to prospective surface facilities is an important element of the tectonic studies for the potential Yucca Mountain high-level radioactive waste repository in southwestern Nevada. For this purpose, a program of detailed geologic mapping and trenching was done to obtain surface and near-surface geologic data that are essential for determining the location and recency of faults at a prospective surface-facilities site located east of Exile Hill in Midway Valley, near the eastern base of Yucca Mountain. The dominant tectonic features in the Midway Valley area are the north- to northeast-trending, west-dipping normal faults that bound the Midway Valley structural block-the Bow Ridge fault on the west side of Exile Hill and the Paint-brush Canyon fault on the east side of the valley. Trenching of Quaternary sediments has exposed evidence of displacements, which demonstrate that these block-bounding faults repeatedly ruptured the surface during the middle to late Quaternary. Geologic mapping, subsurface borehole and geophysical data, and the results of trenching activities indicate the presence of north- to northeast-trending faults and northwest-trending faults in Tertiary volcanic rocks beneath alluvial and colluvial sediments near the prospective surface-facilities site. North to northeast-trending faults include the Exile Hill fault along the eastern base of Exile Hill and faults to the east beneath the surficial deposits of Midway Valley. These faults have no geomorphic expression, but two north- to northeast-trending zones of fractures exposed in excavated profiles of middle to late Pleistocene deposits at the prospective surface-facilities site appear to be associated with these faults. Northwest-trending faults include the West Portal and East Portal faults, but no disruption of Quaternary deposits by these faults is evident. The western zone of fractures is associated with the Exile Hill fault. The eastern zone of fractures is within Quaternary alluvial sediments, but no bedrock was encountered in trenches and soil pits in this part of the prospective surface facilities site; thus, the direct association of this zone with one or more bedrock faults is uncertain. No displacement of lithologic contacts and soil horizons could be detected in the fractured Quaternary deposits. The results of these investigations imply the absence of any appreciable late Quaternary faulting activity at the prospective surface-facilities site.

  3. 2001 TRAFFIC ZONE BOUNDARIES Zone Numbers

    E-Print Network [OSTI]

    Toronto, University of

    2001 TRAFFIC ZONE BOUNDARIES Zone Numbers & Detailed Definitions #12;2001 TRAFFIC ZONE BOUNDARIES of Toronto Joint Program in Transportation January 2003 #12;PREFACE This report presents the 2001 traffic zone numbers by local municipalities in the 2001 TTS survey area. The second part presents detailed

  4. Three-Dimensional Radionuclide Transport Through the Unsaturated Zone of the Yucca Mountain Site 3 Colloids

    SciTech Connect (OSTI)

    G. J. Moridis; Y. Seol

    2007-01-26T23:59:59.000Z

    The authors investigated colloid transport in the unsaturated fractured zone by means of three-dimensional site-scale numerical model under present-day climate infiltration, considering varying colloid diameters, kinetic declogging, and filtration. The radionuclide transport model was used to simulate continuous release of colloids into fractures throughout the proposed repository, in which any components of engineered barrier system such as waste package or drip shield were not considered. the results of the study indicate the importance of subsurface geology and site hydrology, i.e., the presence of faults (they dominate and control transport), fractures (the main migration pathways), and the relative distribution of zeolitic and vitric tuffs. The simulations indicate that (1) colloid transport is not significantly affected by varying the filtration parameters, (2) travel time to the water table decreases with the colloid size, (3) larger colloids show little retardation whereas very small ones are retarded significantly, and (4) fracture filtration can have an impact on transport. Because of uncertainties in the fundamentals of colloid transport and an extremely conservative approach (based on an improbably adverse worst-case scenario), caution should be exercised in the analysis and interpretation of the 3-D simulation results. The results discussed here should be viewed as an attempt to identify and evaluate the mechanisms, processes, and geological features that control colloidal transport.

  5. Proceedings of Hydrology Days 2002, Pages 56 63, April 1 4, 2002 Hydrology Days 2002

    E-Print Network [OSTI]

    Deinert, Mark

    Proceedings of Hydrology Days 2002, Pages 56 ­ 63, April 1 ­ 4, 2002 Hydrology Days 2002 Real radiography can be used for quantitative imaging of hydrologic phenomena at video frame rates, with great

  6. AN APPROACH TO THE FRACTURE HYDROLOGY AT STRIPA: PRELIMINARY RESULTS

    E-Print Network [OSTI]

    Gale, J.E.

    2010-01-01T23:59:59.000Z

    Geochemistry and Isotope Hydrology of Groundwaters in theAN APPROACH TO THE FRACTURE HYDROLOGY AT STRIPA: PRELIMINARYGeochemistry and Isotope Hydrology of Groundwaters in the

  7. Structure of the eastern Red Rocks and Wind Ridge thrust faults, Wyoming: how a thrust fault gains displacement along strike

    E-Print Network [OSTI]

    Huntsman, Brent Stanley

    1983-01-01T23:59:59.000Z

    displacement along strike . . . . . . . . . . . . 56 Figure 17 Horizontal shortening 1n the direction of tectonic transport along strike of the Red Rocks fault with Elliot's ( 1976) line 60 F1gure 18: Shorten1ng along strike of precuts 1n clay model 2... with Elliot's ( 1976) line . 61 F1gure 19 The approx1mate position of the Red Rocks fault in O'Keefe's ( 1980) three end-member class1ficat1on of displacement transfer zones . . . . . . . . . . . . . . . . . . . 64 LIST OF TABLES Table 1: Stratigraphic...

  8. TR-032 Hydrology March 2007 An operational method

    E-Print Network [OSTI]

    TR-032 Hydrology March 2007 An operational method of assessing hydrologic recovery for Vancouver ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife #12;Citation: Hudson, R., and G. Horel. 2007. An operational method of assessing hydrologic recovery for Vancouver Island and south

  9. Transition-fault test generation

    E-Print Network [OSTI]

    Cobb, Bradley Douglas

    2013-02-22T23:59:59.000Z

    . One way to detect these timing defects is to apply test patterns to the integrated circuit that are generated using the transition-fault model. Unfortunately, industry's current transition-fault test generation schemes produce test sets that are too...

  10. A High shear stress segment along the San Andreas Fault: Inferences based on near-field stress direction and stress magnitude observations in the Carrizo Plain Area

    SciTech Connect (OSTI)

    Castillo, D. A., [Department of Geology and Geophysics, University of Adelaide (Australia); Younker, L.W. [Lawrence Livermore National Lab., CA (United States)

    1997-01-30T23:59:59.000Z

    Nearly 200 new in-situ determinations of stress directions and stress magnitudes near the Carrizo plain segment of the San Andreas fault indicate a marked change in stress state occurring within 20 km of this principal transform plate boundary. A natural consequence of this stress transition is that if the observed near-field ``fault-oblique`` stress directions are representative of the fault stress state, the Mohr-Coulomb shear stresses resolved on San Andreas sub-parallel planes are substantially greater than previously inferred based on fault-normal compression. Although the directional stress data and near-hydrostatic pore pressures, which exist within 15 km of the fault, support a high shear stress environment near the fault, appealing to elevated pore pressures in the fault zone (Byerlee-Rice Model) merely enhances the likelihood of shear failure. These near-field stress observations raise important questions regarding what previous stress observations have actually been measuring. The ``fault-normal`` stress direction measured out to 70 km from the fault can be interpreted as representing a comparable depth average shear strength of the principal plate boundary. Stress measurements closer to the fault reflect a shallower depth-average representation of the fault zone shear strength. If this is true, only stress observations at fault distances comparable to the seismogenic depth will be representative of the fault zone shear strength. This is consistent with results from dislocation monitoring where there is pronounced shear stress accumulation out to 20 km of the fault as a result of aseismic slip within the lower crust loading the upper locked section. Beyond about 20 km, the shear stress resolved on San Andreas fault-parallel planes becomes negligible. 65 refs., 15 figs.

  11. Fault tolerant linear actuator

    DOE Patents [OSTI]

    Tesar, Delbert

    2004-09-14T23:59:59.000Z

    In varying embodiments, the fault tolerant linear actuator of the present invention is a new and improved linear actuator with fault tolerance and positional control that may incorporate velocity summing, force summing, or a combination of the two. In one embodiment, the invention offers a velocity summing arrangement with a differential gear between two prime movers driving a cage, which then drives a linear spindle screw transmission. Other embodiments feature two prime movers driving separate linear spindle screw transmissions, one internal and one external, in a totally concentric and compact integrated module.

  12. Computer hardware fault administration

    DOE Patents [OSTI]

    Archer, Charles J. (Rochester, MN); Megerian, Mark G. (Rochester, MN); Ratterman, Joseph D. (Rochester, MN); Smith, Brian E. (Rochester, MN)

    2010-09-14T23:59:59.000Z

    Computer hardware fault administration carried out in a parallel computer, where the parallel computer includes a plurality of compute nodes. The compute nodes are coupled for data communications by at least two independent data communications networks, where each data communications network includes data communications links connected to the compute nodes. Typical embodiments carry out hardware fault administration by identifying a location of a defective link in the first data communications network of the parallel computer and routing communications data around the defective link through the second data communications network of the parallel computer.

  13. andreas fault zone: Topics by E-print Network

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

    Andreas Fichtner a,(n) Geosciences Websites Summary: Technical University, Istanbul, Turkey d Nancy School of Geology, Computer Science Department, Nancy, France which shapes the...

  14. Thermal Waters Along The Konocti Bay Fault Zone, Lake County...

    Open Energy Info (EERE)

    in the diluted spring waters suggest that the diluting water is old. Authors J. M. Thompson, R. H. Mariner, L. D. White, T. S. Presser and W. C. Evans Published Journal Journal...

  15. Early Mars hydrology: 2. Hydrological evolution in the Noachian and Hesperian epochs

    E-Print Network [OSTI]

    Early Mars hydrology: 2. Hydrological evolution in the Noachian and Hesperian epochs Jeffrey C, before a hydrologic and climatic transition in the late Noachian led to a decrease in erosion rates the temporal evolution of Martian groundwater hydrology during the Noachian and early Hesperian epochs using

  16. Rangeland Hydrology:Rangeland Hydrology: Research Issues andResearch Issues and

    E-Print Network [OSTI]

    1 Rangeland Hydrology:Rangeland Hydrology: Research Issues andResearch Issues and QuestionsQuestions Steven Fassnacht Watershed Science Colorado State University Hydrologic Model Schematic state variables e.g. snow, soil moisture Hydrologic Models streamflow Meteorological Data ( )station, gridded Land Cover

  17. BEE 3710: Syllabus Spring 2013 Physical Hydrology for Ecosystems

    E-Print Network [OSTI]

    Walter, M.Todd

    BEE 3710: Syllabus Spring 2013 01/21/13 Physical Hydrology for Ecosystems BEE 3710 www.hydrology: Physical Hydrology, second edition. S. Lawrence Dingman. 2002. Prentice Hall. pp. 600. Meeting: TR 9 to fundamental hydrology emphasizing physical hydrological processes and the interactions among hydrology

  18. Enterprise Zone Incentives (Florida)

    Broader source: Energy.gov [DOE]

    Enterprise Zone Incentives encourage business growth within certain geographic areas targeted for economic revitalization. Businesses which create jobs within a designated zone are eligible for...

  19. RREC -October 2014 Use of Hydrology

    E-Print Network [OSTI]

    Illinois at Urbana-Champaign, University of

    RREC - October 2014 Use of Hydrology and Hydraulics to Support Environmental Response Hydrology ­ the study of the movement of water. Usage for this application is to mean the quantification at the site was Broad scale steps: ­ Prepare hydrologic model to estimate river flow at points of interest

  20. Watershed Science/Hydrology Graduate Schools

    E-Print Network [OSTI]

    Watershed Science/Hydrology Graduate Schools University of Arizona Tucson, Arizona 95721://www.ag.arizona.edu/srnr/academicprograms/watershedresources/graduatestudies.html University of California, Davis Davis, California 95616 Program: Hydrologic Sciences http://www.warnercnr.colostate.edu/frws/watershed/graduate/index.html University of Florida Gainesville, Florida 326118140 Programs: Hydrologic Science http

  1. 5, 547577, 2008 Isotope hydrology of

    E-Print Network [OSTI]

    Boyer, Edmond

    HESSD 5, 547­577, 2008 Isotope hydrology of cave dripwaters L. Fuller et al. Title Page Abstract.hydrol-earth-syst-sci-discuss.net/5/547/2008/ © Author(s) 2008. This work is licensed under a Creative Commons License. Hydrology and Earth System Sciences Discussions Papers published in Hydrology and Earth System Sciences Discussions

  2. Fault Tolerant Quantum Filtering and Fault Detection for Quantum Systems

    E-Print Network [OSTI]

    Qing Gao; Daoyi Dong; Ian R. Petersen

    2015-04-26T23:59:59.000Z

    This paper aims to determine the fault tolerant quantum filter and fault detection equation for a class of open quantum systems coupled to laser fields and subject to stochastic faults. In order to analyze open quantum systems where the system dynamics involve both classical and quantum random variables, a quantum-classical probability space model is developed. Using a reference probability approach, a fault tolerant quantum filter and a fault detection equation are simultaneously derived for this class of open quantum systems. An example of two-level open quantum systems subject to Poisson-type faults is presented to illustrate the proposed method. These results have the potential to lead to a new fault tolerant control theory for quantum systems.

  3. Geology and hydrogeology of the Edwards Aquifer Transition Zone, Bexar County, Texas

    E-Print Network [OSTI]

    Neathery, Jeffrey Stephen

    1989-01-01T23:59:59.000Z

    into the Edwards Aquifer (Figure 5). Rainfall and stream flow on the Balcones Fault Zone/Transition Zone also contributes to the water migrating to and recharging the Edwards Aquifer. Water 14 OKLAHOMA ARKANSAS TEXAS l a g/ CENTRAL I I(l TEXAS I I PLA M I... WATER LINE Glen Roee Llmeetone aneltlon Z one F Oem ~ lion FLOWING ARTESIAN WELL nanna fa an r aaneltlon Z one DWA AQUIFER EDWARDS PLATEAU BALCONES ESCARPMENT Glen Roe e Lime alone ALCONE FAULT ZONE Generalized cross section...

  4. Row fault detection system

    DOE Patents [OSTI]

    Archer, Charles Jens (Rochester, MN); Pinnow, Kurt Walter (Rochester, MN); Ratterman, Joseph D. (Rochester, MN); Smith, Brian Edward (Rochester, MN)

    2010-02-23T23:59:59.000Z

    An apparatus and program product check for nodal faults in a row of nodes by causing each node in the row to concurrently communicate with its adjacent neighbor nodes in the row. The communications are analyzed to determine a presence of a faulty node or connection.

  5. Row fault detection system

    DOE Patents [OSTI]

    Archer, Charles Jens (Rochester, MN); Pinnow, Kurt Walter (Rochester, MN); Ratterman, Joseph D. (Rochester, MN); Smith, Brian Edward (Rochester, MN)

    2012-02-07T23:59:59.000Z

    An apparatus, program product and method check for nodal faults in a row of nodes by causing each node in the row to concurrently communicate with its adjacent neighbor nodes in the row. The communications are analyzed to determine a presence of a faulty node or connection.

  6. Regional fault pattern study - Sonam/Ajapa area offshore Western Niger Delta

    SciTech Connect (OSTI)

    Kanu, K.A.; Glass, J.E.; Okoro, P.C. [Chevron Nigeria Ltd., Lagos (Nigeria)] [and others

    1995-08-01T23:59:59.000Z

    A total of 900 km{sup 2} of high quality 3-D data was used to interpret structural trends: an inner trend containing the Mefa, Meji and Ajapa oil fields and a younger outer trend containing the large Sonam condensate field. Each trend is bounded by a large, regional down-to-the-coast fault system on the northeast and its associated counter-regional fault to the southwest. Hydrocarbon accumulations are contained within rollover anticlines adjacent to the main seaward-dipping fault trends. However, our data shows that structural geometries within each trend are highly three-dimensional. Anticlinal end closure is achieved by changes in fault detachment level and displacement which generally occur near major fault junctions. Thus, significant accumulations are associated with first-order high-relief accommodation zones. In the absence of such first-order closure, we cannot rely upon the systems of relatively small faults that occur on seaward dipping flanks and in areas of crestal collapse. Detailed 3-D mapping, supported by drilling results, shows that such faults do not link strongly together, thereby allowing leakage of hydrocarbons mound fault tips and up relay ramps between faults.

  7. A photoelastic study of the effects of surface geometry on fault movements

    E-Print Network [OSTI]

    Barber, David Williams

    1973-01-01T23:59:59.000Z

    , California, showing two en-echelon segments separated by complex zone of subsidiary faulting (after Vedder and Wallace, 1970, sheet 2). Solid lines are specific photogeologic features associated with fault- ing while dashed lines are inferred from less... lines, and os, the least compressive stress, by dashed lines. 24 stresses are higher on the two en-echelon fault segments than on the ramp. The external load is about 0. 07 bars and it i. s increasing sharply. Stored strain energy in the ramp area...

  8. Not Excavated (still on site) As All data Zone 1 Zone 2 Zone 3 Zone 4

    E-Print Network [OSTI]

    .12 11.68 10.29 AL: 50 xrf_allzones_20060810 Page 1 of 174notx summary #12;Mo All data Zone 1 Zone 2 Zone.35 2.36 2.37 U95: 57.95 62.41 60.56 51.63 70.50 U99: 58.98 64.27 62.34 52.75 74.38 AL: 550 xrf99: 12.48 AL: xrf_allzones_20060810 Page 3 of 174x summary #12;Mo All data Zone 1 Zone 2 Zone 3 Zone

  9. Curso 7-Modelos Digitais de Elevao na Hidrologia: Extrao de Atributos Hidrolgicos da Topografia (Digital Elevation Models in Hydrology: Extraction of Hydrologic

    E-Print Network [OSTI]

    Topografia (Digital Elevation Models in Hydrology: Extraction of Hydrologic Attributes from Topography Data

  10. Hydrological consequences of global warming

    SciTech Connect (OSTI)

    Miller, Norman L.

    2009-06-01T23:59:59.000Z

    The 2007 Intergovernmental Panel for Climate Change indicates there is strong evidence that the atmospheric concentration of carbon dioxide far exceeds the natural range over the last 650,000 years, and this recent warming of the climate system is unequivocal, resulting in more frequent extreme precipitation events, earlier snowmelt runoff, increased winter flood likelihoods, increased and widespread melting of snow and ice, longer and more widespread droughts, and rising sea level. The effects of recent warming has been well documented and climate model projections indicate a range of hydrological impacts with likely to very likely probabilities (67 to 99 percent) of occurring with significant to severe consequences in response to a warmer lower atmosphere with an accelerating hydrologic cycle.

  11. Coupled Geochemical and Hydrological Processes Governing the Fate and Transport of Radionuclides and Toxic Metals Beneath the Hanford Tank Farms

    SciTech Connect (OSTI)

    Scott Fendorf; Phil Jardine

    2006-07-21T23:59:59.000Z

    The goal of this research was to provide an improved understanding and predictive capability of coupled hydrological and geochemical mechanisms that are responsible for the accelerated migration and immobilization of radionuclides and toxic metals in the badose zone beneath the Hanford Tank Farms.

  12. James W. Jawitz 2169 McCarty Hall/PO Box 110290 Assistant Professor, Environmental Hydrology Gainesville, FL 32611

    E-Print Network [OSTI]

    Ma, Lena

    . Hydraulic analysis of cell-network treatment wetlands. Journal of Hydrology, 330, pp. 721-724, doi:10.1016/j treatment wetland in Florida. Ecological Engineering, 26, 132­146, doi: 10.1016/j.ecoleng.2005 zone treatment: Experimental and modeling assessment of the benefits of partial source removal $991

  13. Influence of Transcontinental arch on Cretaceous listric-normal faulting, west flank, Denver basin

    SciTech Connect (OSTI)

    Davis, T.L.

    1983-08-01T23:59:59.000Z

    Seismic studies along the west flank of the Denver basin near Boulder and Greeley, Colorado illustrate the interrelationship between shallow listric-normal faulting in the Cretaceous and deeper basement-controlled faulting. Deeper fault systems, primarily associated with the Transcontinental arch, control the styles and causative mechanisms of listric-normal faulting that developed in the Cretaceous. Three major stratigraphic levels of listric-normal faulting occur in the Boulder-Greeley area. These tectonic sensitive intervals are present in the following Cretaceous formations: Laramie-Fox Hills-upper Pierre, middle Pierre Hygiene zone, and the Niobrara-Carlile-Greenhorn. Documentation of the listric-normal fault style reveals a Wattenberg high, a horst block or positive feature of the greater Transcontinental arch, was active in the east Boulder-Greeley area during Cretaceous time. Paleotectonic events associated with the Wattenberg high are traced through analysis of the listric-normal fault systems that occur in the area. These styles are important to recognize because of their stratigraphic and structural influence on Cretaceous petroleum reservoir systems in the Denver basin. Similar styles of listric-normal faulting occur in the Cretaceous in many Rocky Mountain foreland basins.

  14. Idaho National Laboratory Vadose Zone Research Park Geohydrological Monitoring Results

    SciTech Connect (OSTI)

    Kristine Baker

    2006-01-01T23:59:59.000Z

    Vadose zone lithology, hydrological characterization of interbed sediments, and hydrological data from subsurface monitoring of Idaho Nuclear Technology and Engineering Center wastewater infiltration are presented. Three-dimensional subsurface lithology of the vadose zone beneath the Vadose Zone Research Park is represented in a 2 dimensional (2 D) diagram showing interpolated lithology between monitoring wells. Laboratory-measured values for saturated hydraulic conductivity and porosity are given for three major interbeds, denoted as the B BC interbed (20 to 35 m bls), the C D interbed (40 to 45 m bls), and the DE 1 2 interbed (55 to 65 m bls), along with an overall physical description of the sediments and geologic depositional environments. Pre-operational pore water pressure conditions are presented to show the presence and location of perched water zones before pond discharge at the New Percolation Ponds. Subsurface infiltration conditions during initial high-volume discharge are presented to show water arrival times and arrival sequences. Steady-state conditions are then presented to show formation and locations of perched water zones and recharge sources after several months of discharge to the New Percolation Ponds.

  15. Alternative Energy Zone (Ohio)

    Broader source: Energy.gov [DOE]

    Ohio's Alternative Energy Zones are made possible through Ohio's Senate Bill 232, which reduced taxes on alternative energy projects. The Alternative Energy Zones are designated on a county-by...

  16. Feedbacks Between Hydrological Heterogeneity and Bioremediation

    E-Print Network [OSTI]

    Hubbard, Susan

    Feedbacks Between Hydrological Heterogeneity and Bioremediation Induced Biogeochemical, intensively studied over the last 20 years (4), has potential to further impact bioremediation efforts

  17. A remote sensing observatory for hydrologic sciences: A genesis for scaling to continental hydrology

    E-Print Network [OSTI]

    Katul, Gabriel

    A remote sensing observatory for hydrologic sciences: A genesis for scaling to continental hydrology Witold F. Krajewski,1 Martha C. Anderson,2 William E. Eichinger,1 Dara Entekhabi,3 Brian K arise primarily from an inadequate understanding of the hydrological cycle: on land, in oceans

  18. Estimating GRACE monthly water storage change consistent with hydrology by assimilating hydrological

    E-Print Network [OSTI]

    Stuttgart, Universität

    Estimating GRACE monthly water storage change consistent with hydrology by assimilating hydrological information B. Devaraju, N. Sneeuw Institute of Geodesy, Universit¨at Stuttgart, Germany estimates of mass changes with observed hydrological data, which is available for 20% of the land area

  19. Fault current limiter

    DOE Patents [OSTI]

    Darmann, Francis Anthony

    2013-10-08T23:59:59.000Z

    A fault current limiter (FCL) includes a series of high permeability posts for collectively define a core for the FCL. A DC coil, for the purposes of saturating a portion of the high permeability posts, surrounds the complete structure outside of an enclosure in the form of a vessel. The vessel contains a dielectric insulation medium. AC coils, for transporting AC current, are wound on insulating formers and electrically interconnected to each other in a manner such that the senses of the magnetic field produced by each AC coil in the corresponding high permeability core are opposing. There are insulation barriers between phases to improve dielectric withstand properties of the dielectric medium.

  20. Fault Current Limiters

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy Chinaof EnergyImpactOnSTATEMENT OF DAVID GEISEREnergy1DNVDOE'sUAfter 12Fault

  1. Observer-based fault detection for nuclear reactors

    E-Print Network [OSTI]

    Li, Qing, 1972-

    2001-01-01T23:59:59.000Z

    This is a study of fault detection for nuclear reactor systems. Basic concepts are derived from fundamental theories on system observers. Different types of fault- actuator fault, sensor fault, and system dynamics fault ...

  2. FRACTURE AND HYDROLOGY DATA FROM FIELD STUDIES AT STRIPA, SWEDEN

    E-Print Network [OSTI]

    Gale, J.E.

    2010-01-01T23:59:59.000Z

    An Approach to the Fracture Hydrology at Stripa, PreliminaryRocks. On Recent Trends in Hydrology, Special PublicationsDE86 013586 W FRACTURE AND HYDROLOGY DATA FROM FIELD STUDIES

  3. TR-010 Hydrology March 2001 Comparative Analysis of Sediment Production

    E-Print Network [OSTI]

    TR-010 Hydrology March 2001 Comparative Analysis of Sediment Production in Two Partially Harvested Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife Forest ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife CONTENTS ABSTRACT

  4. TR-019 Hydrology March 2002 Roberts Creek Study Forest

    E-Print Network [OSTI]

    TR-019 Hydrology March 2002 Roberts Creek Study Forest: effects of partial retention harvesting, 250-751-7001 Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife Abstract

  5. Testing for fault activity at Yucca Mountain, Nevada, using independent GPS results from the BARGEN network

    E-Print Network [OSTI]

    Blewitt, Geoffrey

    Mountain (YM) nuclear waste repository, the United States Department of Energy has funded the installation Zone (ECSZ) fault parameters produces an unreasonably deep locking depth of $30 km for the Death Valley a strain rate of 17.0 ± 1.8 ns/yr, marginally higher than our ECSZ model predicts (13.9 ± 0.7 ns

  6. Gravity and fault structures, Long Valley caldera, California

    SciTech Connect (OSTI)

    Carle, S.F.; Goldstein, N.E.

    1987-07-01T23:59:59.000Z

    The main and catastrophic phase of eruption in Long Valley occurred 0.73 m.y. ago with the eruption of over 600 km/sup 3/ of rhyolitic magma. Subsequent collapse of the roof rocks produced a caldera which is now elliptical in shape, 32 km east-west by 17 km north-south. The caldera, like other large Quarternary silicic ash-flow volcanoes that have been studied by various workers, has a nearly coincident Bouguer gravity low. Earlier interpretations of the gravity anomaly have attributed the entire anomaly to lower density rocks filling the collapsed structure. However, on the basis of many additional gravity stations and supporting subsurface data from several new holes, a much more complex and accurate picture has emerged of caldera structure. From a three-dimensional inversion of the residual Bouguer gravity data we can resolve discontinuities that seem to correlate with extensions of pre-caldera faults into the caldera and faults associated with the ring fracture. Some of these faults are believed related to the present-day hydrothermal upflow zone and the zone of youngest volcanic activity within the caldera.

  7. Synchronized sampling improves fault location

    SciTech Connect (OSTI)

    Kezunovic, M. [Texas A and M Univ., College Station, TX (United States)] [Texas A and M Univ., College Station, TX (United States); Perunicic, B. [Lamar Univ., Beaumont, TX (United States)] [Lamar Univ., Beaumont, TX (United States)

    1995-04-01T23:59:59.000Z

    Transmission line faults must be located accurately to allow maintenance crews to arrive at the scene and repair the faulted section as soon as possible. Rugged terrain and geographical layout cause some sections of power transmission lines to be difficult to reach. In the past, a variety of fault location algorithms were introduced as either an add-on feature in protective relays or stand-alone implementation in fault locators. In both cases, the measurements of current and voltages were taken at one terminal of a transmission line only. Under such conditions, it may become difficult to determine the fault location accurately, since data from other transmission line ends are required for more precise computations. In the absence of data from the other end, existing algorithms have accuracy problems under several circumstances, such as varying switching and loading conditions, fault infeed from the other end, and random value of fault resistance. Most of the one-end algorithms were based on estimation of voltage and current phasors. The need to estimate phasors introduces additional difficulty in high-speed tripping situations where the algorithms may not be fast enough in determining fault location accurately before the current signals disappear due to the relay operation and breaker opening. This article introduces a unique concept of high-speed fault location that can be implemented either as a simple add-on to the digital fault recorders (DFRs) or as a stand-alone new relaying function. This advanced concept is based on the use of voltage and current samples that are synchronously taken at both ends of a transmission line. This sampling technique can be made readily available in some new DFR designs incorporating receivers for accurate sampling clock synchronization using the satellite Global Positioning System (GPS).

  8. Civil and Environmental Engineering CSU Center for Contaminant Hydrology

    E-Print Network [OSTI]

    Civil and Environmental Engineering CSU ­ Center for Contaminant Hydrology Coordinator The Center for Contaminant Hydrology (CCH) ( HYPERLINK "http://www.engr.colostate.edu/CCH/" www

  9. Hydrology, environment Four remarks on the growth of channel networks

    E-Print Network [OSTI]

    Kudrolli, Arshad

    Hydrology, environment Four remarks on the growth of channel networks Quatre remarques sur la online xxx Presented by Ghislain de Marsily Keywords: Geomorphology Hydrology River network Mots cle

  10. Coupled Thermal-Hydrological-Mechanical-Chemical Model and Experiments...

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

    Coupled Thermal-Hydrological-Mechanical-Chemical Model and Experiments for Optimization of Enhanced Geothermal System Development and Production Coupled Thermal-Hydrological-Mechan...

  11. Automated Fault Location In Smart Distribution Systems 

    E-Print Network [OSTI]

    Lotfifard, Saeed

    2012-10-19T23:59:59.000Z

    ............................................................................................................................ 88 x LIST OF FIGURES Page Figure 1 Multiple possible fault location estimation for a fault at node A ........................ 7 Figure 2 Simple faulted network model [1] © [2011] IEEE ............................................ 40 Figure 3... Types C and D voltage sags for different phases [51] © [2003] IEEE .............. 42 Figure 4 Rf estimation procedure [1] © [2011] IEEE ...................................................... 45 Figure 5 Flow chart of the fault location algorithm [1...

  12. Hot Pot Detail - Evidence of Quaternary Faulting

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

    Lane, Michael

    Compilation of published data, field observations and photo interpretation relevant to Quaternary faulting at Hot Pot.

  13. Hot Pot Detail - Evidence of Quaternary Faulting

    SciTech Connect (OSTI)

    Lane, Michael

    2013-06-27T23:59:59.000Z

    Compilation of published data, field observations and photo interpretation relevant to Quaternary faulting at Hot Pot.

  14. Arc fault detection system

    DOE Patents [OSTI]

    Jha, Kamal N. (Bethel Park, PA)

    1999-01-01T23:59:59.000Z

    An arc fault detection system for use on ungrounded or high-resistance-grounded power distribution systems is provided which can be retrofitted outside electrical switchboard circuits having limited space constraints. The system includes a differential current relay that senses a current differential between current flowing from secondary windings located in a current transformer coupled to a power supply side of a switchboard, and a total current induced in secondary windings coupled to a load side of the switchboard. When such a current differential is experienced, a current travels through a operating coil of the differential current relay, which in turn opens an upstream circuit breaker located between the switchboard and a power supply to remove the supply of power to the switchboard.

  15. Arc fault detection system

    DOE Patents [OSTI]

    Jha, K.N.

    1999-05-18T23:59:59.000Z

    An arc fault detection system for use on ungrounded or high-resistance-grounded power distribution systems is provided which can be retrofitted outside electrical switchboard circuits having limited space constraints. The system includes a differential current relay that senses a current differential between current flowing from secondary windings located in a current transformer coupled to a power supply side of a switchboard, and a total current induced in secondary windings coupled to a load side of the switchboard. When such a current differential is experienced, a current travels through a operating coil of the differential current relay, which in turn opens an upstream circuit breaker located between the switchboard and a power supply to remove the supply of power to the switchboard. 1 fig.

  16. Thoughts Regarding the Dimensions of Faults at Rainier and Aqueduct Mesas, Nye County, Nevada, Based on Surface and Underground Mapping

    SciTech Connect (OSTI)

    Drellack, S.L.; Prothro, L.B.; Townsend, M.J.; Townsend, D.R.

    2011-02-01T23:59:59.000Z

    The geologic setting and history, along with observations through 50 years of detailed geologic field work, show that large-displacement (i.e., greater than 30 meters of displacement) syn- to post-volcanic faults are rare in the Rainier Mesa area. Faults observed in tunnels and drill holes are mostly tight, with small displacements (most less than 1.5 meters) and small associated damage zones. Faults are much more abundant in the zeolitized tuffs than in the overlying vitric tuffs, and there is little evidence that faults extend downward from the tuff section through the argillic paleocolluvium into pre-Tertiary rocks. The differences in geomechanical characteristics of the various tuff lithologies at Rainier Mesa suggest that most faults on Rainer Mesa are limited to the zeolitic units sandwiched between the overlying vitric bedded tuffs and the underlying pre-Tertiary units (lower carbonate aquifer–3, lower clastic confining unit–1, and Mesozoic granite confining unit).

  17. Renewable Energy Renaissance Zones

    Broader source: Energy.gov [DOE]

    For the purposes of renaissance zone designation, “renewable energy facility” means a facility that creates energy, fuels, or chemicals directly from the wind, the sun, trees, grasses, biosolids,...

  18. Renaissance Zones (North Dakota)

    Broader source: Energy.gov [DOE]

    Renaissance Zones allow qualifying businesses and individuals to claim one or more tax incentives for purchasing, leasing, or making improvements to real property located in a North Dakota...

  19. Geothermal: Educational Zone

    Office of Scientific and Technical Information (OSTI)

    Educational Zone Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic Search About Publications Advanced Search New Hot Docs News Related Links...

  20. Fault-tolerant rotary actuator

    SciTech Connect (OSTI)

    Tesar, Delbert

    2006-10-17T23:59:59.000Z

    A fault-tolerant actuator module, in a single containment shell, containing two actuator subsystems that are either asymmetrically or symmetrically laid out is provided. Fault tolerance in the actuators of the present invention is achieved by the employment of dual sets of equal resources. Dual resources are integrated into single modules, with each having the external appearance and functionality of a single set of resources.

  1. BEE 371, Physical Hydrology for Ecosystems Spring 2007

    E-Print Network [OSTI]

    Walter, M.Todd

    BEE 371, Physical Hydrology for Ecosystems Spring 2007 Credit: 3 hours Catalogue description: This is an introduction to fundamental hydrology emphasizing physical hydrological processes and the roles interactions among hydrology, ecology, biogeochemistry, and human activities. This course focuses on surface and near

  2. Model Discrepancy in the Saturated Path Hydrology Model: Initial Analysis

    E-Print Network [OSTI]

    Oakley, Jeremy

    Model Discrepancy in the Saturated Path Hydrology Model: Initial Analysis Tom Fricker University discrepancy in the Saturated Path Hydrology Model (logSPM, Kuczera et al., 2006). The purpose). 1 #12;3 The Saturated Path Hydrology Model We consider the Saturated Path Hydrology Model (log

  3. active fault diagnosis: Topics by E-print Network

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

    Harrold, Mary Jean 453 Fault Tolerant Control with Additive Compensation for Faults in an Automotive Damper Physics Websites Summary: Fault Tolerant Control with Additive...

  4. Passive fault current limiting device

    DOE Patents [OSTI]

    Evans, Daniel J. (Wheeling, IL); Cha, Yung S. (Darien, IL)

    1999-01-01T23:59:59.000Z

    A passive current limiting device and isolator is particularly adapted for use at high power levels for limiting excessive currents in a circuit in a fault condition such as an electrical short. The current limiting device comprises a magnetic core wound with two magnetically opposed, parallel connected coils of copper, a high temperature superconductor or other electrically conducting material, and a fault element connected in series with one of the coils. Under normal operating conditions, the magnetic flux density produced by the two coils cancel each other. Under a fault condition, the fault element is triggered to cause an imbalance in the magnetic flux density between the two coils which results in an increase in the impedance in the coils. While the fault element may be a separate current limiter, switch, fuse, bimetal strip or the like, it preferably is a superconductor current limiter conducting one-half of the current load compared to the same limiter wired to carry the total current of the circuit. The major voltage during a fault condition is in the coils wound on the common core in a preferred embodiment.

  5. Passive fault current limiting device

    DOE Patents [OSTI]

    Evans, D.J.; Cha, Y.S.

    1999-04-06T23:59:59.000Z

    A passive current limiting device and isolator is particularly adapted for use at high power levels for limiting excessive currents in a circuit in a fault condition such as an electrical short. The current limiting device comprises a magnetic core wound with two magnetically opposed, parallel connected coils of copper, a high temperature superconductor or other electrically conducting material, and a fault element connected in series with one of the coils. Under normal operating conditions, the magnetic flux density produced by the two coils cancel each other. Under a fault condition, the fault element is triggered to cause an imbalance in the magnetic flux density between the two coils which results in an increase in the impedance in the coils. While the fault element may be a separate current limiter, switch, fuse, bimetal strip or the like, it preferably is a superconductor current limiter conducting one-half of the current load compared to the same limiter wired to carry the total current of the circuit. The major voltage during a fault condition is in the coils wound on the common core in a preferred embodiment. 6 figs.

  6. Report on Hydrologic Flow in Low-Permeability Media

    SciTech Connect (OSTI)

    Liu, Hui-Hai; Birkholzer, Jens

    2013-11-13T23:59:59.000Z

    We demonstrate that under normal conditions (under which there are no intersections between tunnels/drifts and conductive geological structures, such as faults), the water flow velocity in the damage zone, as a result of non-Darcian flow behavior, is extremely small such that solute transport is dominated by diffusion, rather than advection. We show that unless non-Darcian flow behavior is considered, significant errors can occur in the “measured” relative-permeability values. We propose a hypothesis to consider the temperature impact based on limited test results from the petroleum literature. To consider the bedding effects, we present an empirical relationship between water flux and hydraulic gradient for non-Darcian water flow in anisotropic cases.

  7. 1.72 Groundwater Hydrology, Fall 2004

    E-Print Network [OSTI]

    Harvey, Charles

    Fundamentals of subsurface flow and transport, emphasizing the role of groundwater in the hydrologic cycle, the relation of groundwater flow to geologic structure, and the management of contaminated groundwater. Topics ...

  8. NEW COURSE: WETLAND HYDROLOGY AND BIOGEOCHEMISTRY

    E-Print Network [OSTI]

    Buehrer, R. Michael

    wetland delineation, wetland restoration, and constructed wetlands for water treatment. Course contentNEW COURSE: WETLAND HYDROLOGY AND BIOGEOCHEMISTRY EXPLORING THE PROCESSES THAT CONTROL WETLAND (FOR 5984; CRN 19997) Course Overview and Objectives: Wetland ecosystems provide myriad functions from

  9. Visualization of microcrack anisotropy in granite affected by afault zone, using confocal laser scanning microscope

    SciTech Connect (OSTI)

    Onishi, Celia T.; Shimizu, Ichiko

    2004-01-02T23:59:59.000Z

    Brittle deformation in granite can generate a fracture system with different patterns. Detailed fracture analyses at both macroscopic and microscopic scales, together with physical property data from a drill-core, are used to classify the effects of reverse fault deformation in four domains: (1) undeformed granite, (2) fractured granite with cataclastic seams, (3) fractured granite from the damage zone, and (4) foliated cataclasite from the core of the fault. Intact samples from two orthogonal directions, horizontal (H) and vertical (V), from the four domains indicate a developing fracture anisotropy toward the fault, which is highly developed in the damage zone. As a specific illustration of this phenomenon, resin impregnation, using a confocal laser scanning microscope (CLSM) technique is applied to visualize the fracture anisotropy developed in the Toki Granite, Japan. As a result, microcrack networks have been observed to develop in H sections and elongate open cracks in V sections, suggesting that flow pathways can be determined by deformation.

  10. Condition Assessment and Fault Prognostics of Microelectromechanical Systems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    monitoring, Condition assessment, Fault detection, Fault diagnostics, Fault prognostics. Corresponding, batteries, etc.) to complete machines (wind turbines, electrical motors, machining tools, etc.). SeveralCondition Assessment and Fault Prognostics of Microelectromechanical Systems K. Medjaher , H. Skima

  11. The aftermath of silurian faulting in southeast Michigan, and its effect on oil and gas exploration

    SciTech Connect (OSTI)

    Fowler, J.H. (Polaris Energy, Jackson, MI (United States))

    1994-08-01T23:59:59.000Z

    In Macomb Township of Macomb County, southeast Michigan, is found a sinuous normal fault extending along a N82[degrees]W strike, from end to end only 6 mi long, but with more than 260 ft of maximum displacement at the Trenton level. Through about 3 mi of its midsection extent, the main fault is paired with another normal fault with opposite displacement sense, forming a very narrow graben. The timing of development of this divergent wrench feature coincides with Caledonian tectonic activity, a period of intense structural disturbance and regional subsidence throughout the Michigan basin. The fault appears to cut no higher than A[sub 1] Carbonate, although relationships are obscured by subsequent dissolution of more than 500 ft of Salina A[sub 1], A[sub 2], B, D, and F salts along and beyond the trace of the fault. Collapse of interbedded carbonates and shales is evident, although the apparent lack of brecciation indicates salt removal was not rapid. Further, salt removal proceeded throughout the Devonian, producing dramatic compensatory thickening in overlying units. The development of this large feature in prime Niagaran reef territory may have prevented the discovery of reefs by obscuring what is otherwise well-known stratigraphy and seismic signature. The presence of oil production in dolomitized fracture zones in the Trenton/Black River rocks of nearby Ontario may point to similar potential yet remaining along the Macomb faulted trend.

  12. Mid-21st Century Changes to Surface Hydrology Over the Los Angeles Region

    E-Print Network [OSTI]

    Schwartz, Marla Ann

    2013-01-01T23:59:59.000Z

    regional climate and hydrology modeling. Earth Interactions,Brutsaert, W. , 2005. Hydrology: An Introduction. New York:advanced land-surface/hydrology model with the Penn State/

  13. Morphology, hydrology, and water quality of two vernal pools in Madera County, California

    E-Print Network [OSTI]

    Renz, Wendy; Higgins, Tanya

    2006-01-01T23:59:59.000Z

    regime on vernal pool hydrology. Freshwater Biology 50:and L. Stromberg. (1998). Hydrology of vernal pools on non-Morphology, hydrology, and water quality of two vernal pools

  14. FINITE ELEMENT METHOD FOR SUBSURFACE HYDROLOGY USING A MIXED EXPLICIT-IMPLICIT SCHEME

    E-Print Network [OSTI]

    Narasimhan, T.N.

    2011-01-01T23:59:59.000Z

    METHOD FOR SUBSURFACE HYDROLOGY USING A MIXED EXPLICIT-arising in subsurface hydrology. These problems includeFinite Element Method in Hydrology," Int. Jour. Num. Meth.

  15. Research connects soil hydrology and stream water chemistry in California oak woodlands

    E-Print Network [OSTI]

    O'Geen, Anthony T; Dahlgren, Randy A; Swarowsky, Alexandre; Tate, Kenneth W; Lewis, David J; Singer, Michael J

    2010-01-01T23:59:59.000Z

    Dahlgren RA, Tate KW. 2000. Hydrology in a California oakResearch connects soil hydrology and stream water chemistrybetween nitrogen cycling and soil hydrology in a manner that

  16. Potential impacts of global climate change on Tijuana River Watershed hydrology - An initial analysis

    E-Print Network [OSTI]

    Das, Tapash; Dettinger, Michael D; Cayan, Daniel R

    2010-01-01T23:59:59.000Z

    on Tijuana River Watershed hydrology - An initial analysis Achanges may impact the hydrology of the Tijuana Riverclimate changes might impact hydrology in the Tijuana River

  17. Journal of Hydrology (NZ) 47 (2): 67-83 2008 New Zealand Hydrological Society (2008)

    E-Print Network [OSTI]

    Kienzle, Stefan W.

    2008-01-01T23:59:59.000Z

    of intensified irrigation practices on catchment #12;68 hydrology. The report `Growing for good the economic value of irrigation with environmental costs and sustainable agricultural practices (Poff etal) Hydrological impacts of irrigated agriculture in the Manuherikia catchment, Otago, New Zealand S. W. Kienzle1

  18. Queen Anne's County- Solar Zoning

    Broader source: Energy.gov [DOE]

    Queen Anne's County zoning code allows for ground mounted solar arrays in areas zoned as "open space," "agricultural," and "countryside" districts.

  19. Opportunity and Enterprise Zones (Oklahoma)

    Broader source: Energy.gov [DOE]

    Opportunity and Enterprise Zones provide enhanced financial incentives for businesses located in such zones aimed at stimulating economic expansion in rural and disadvantaged communities...

  20. Sensor Fault Detection and Isolation System

    E-Print Network [OSTI]

    Yang, Cheng-Ken

    2014-08-01T23:59:59.000Z

    The purpose of this research is to develop a Fault Detection and Isolation (FDI) system which is capable to diagnosis multiple sensor faults in nonlinear cases. In order to lead this study closer to real world applications in oil industries...

  1. Keystone Opportunity Zones (Pennsylvania)

    Broader source: Energy.gov [DOE]

    Keystone Opportunity Zones allows businesses located within designated areas to qualify for a tax exemption, deduction, credit, or abatement of state and local taxes such as sales and use tax,...

  2. Streamside Management Zones (Montana)

    Broader source: Energy.gov [DOE]

    This chapter sets streamside management zones as encompassing a strip at least 50 feet wide on each side of a stream, lake, or other body of water, measured from the ordinary high-water mark, and...

  3. A Rectilinear-Monotone Polygonal Fault Block Model for Fault-Tolerant Minimal Routing

    E-Print Network [OSTI]

    Wang, Dajin

    ]. In rectangular model, all faulty nodes are grouped in dis- jointed, rectangular areas, called fault blocksA Rectilinear-Monotone Polygonal Fault Block Model for Fault-Tolerant Minimal Routing in Mesh Dajin Wang, Member, IEEE Abstract--We propose a new fault block model, Minimal-Connected-Component (MCC

  4. High resolution quantitative seismic imaging of a strike-slip fault with small vertical offset in clay-rocks from

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    modify the rock confining properties. In the Tournemire Experimental Platform (TEP, France), fault zones, 2005). However, long term confining properties of the clay-rock layers might be affected of argillaceous rocks and the draining properties of tectonic structures are key parameters for the safety

  5. FAULT & COORDINATION STUDY FOR T PLANT COMPLEX

    SciTech Connect (OSTI)

    MCDONALD, G.P.; BOYD-BODIAU, E.A.

    2004-09-01T23:59:59.000Z

    A short circuit study is performed to determine the maximum fault current that the system protective devices, transformers, and interconnections would he subject to in event of a three phase, phase-to-phase, or phase-to-ground fault. Generally, the short circuit study provides the worst case fault current levels at each bus or connection point of the system.

  6. High temperature superconducting fault current limiter

    DOE Patents [OSTI]

    Hull, J.R.

    1997-02-04T23:59:59.000Z

    A fault current limiter for an electrical circuit is disclosed. The fault current limiter includes a high temperature superconductor in the electrical circuit. The high temperature superconductor is cooled below its critical temperature to maintain the superconducting electrical properties during operation as the fault current limiter. 15 figs.

  7. High temperature superconducting fault current limiter

    DOE Patents [OSTI]

    Hull, John R. (Hinsdale, IL)

    1997-01-01T23:59:59.000Z

    A fault current limiter (10) for an electrical circuit (14). The fault current limiter (10) includes a high temperature superconductor (12) in the electrical circuit (14). The high temperature superconductor (12) is cooled below its critical temperature to maintain the superconducting electrical properties during operation as the fault current limiter (10).

  8. Using Fault Model Enforcement to Improve Availability

    E-Print Network [OSTI]

    instead that a new approach, called fault model enforcement, that maps actual faults to expected faults on a constellation of interconnected systems--a typical example is cluster-based systems [4]. Traditional database centers around a set of closely guarded racks and data closets woven together by intricate networks

  9. Using Fault Model Enforcement to Improve Availability

    E-Print Network [OSTI]

    Martin, Richard P.

    that a new approach, called fault model enforcement, that maps actual faults to expected faults on a constellation of interconnected systems--a typical example is cluster-based systems [4]. Traditional database centers around a set of closely guarded racks and data closets woven together by intricate networks

  10. Does hydrologic circulation mask frictional heat on faults after large earthquakes?

    E-Print Network [OSTI]

    Fulton, Patrick M.; Harris, Robert N.; Saffer, Demian M.; Brodsky, Emily E.

    2010-01-01T23:59:59.000Z

    temper- ature effect of drilling a well in Arctic Alaska,deep boreholes, drilling fluids are well below the ambient

  11. Does hydrologic circulation mask frictional heat on faults after large earthquakes?

    E-Print Network [OSTI]

    Fulton, Patrick M.; Harris, Robert N.; Saffer, Demian M.; Brodsky, Emily E.

    2010-01-01T23:59:59.000Z

    thermal physical rock properties. Transient fluid flow isin thermal physical rock properties such as thermal5.2. Thermal Physical Rock Properties [ 24 ] For conductive

  12. Cell boundary fault detection system

    DOE Patents [OSTI]

    Archer, Charles Jens (Rochester, MN); Pinnow, Kurt Walter (Rochester, MN); Ratterman, Joseph D. (Rochester, MN); Smith, Brian Edward (Rochester, MN)

    2011-04-19T23:59:59.000Z

    An apparatus and program product determine a nodal fault along the boundary, or face, of a computing cell. Nodes on adjacent cell boundaries communicate with each other, and the communications are analyzed to determine if a node or connection is faulty.

  13. Software Fault Diagnosis Peter Zoeteweij

    E-Print Network [OSTI]

    Zoeteweij, Peter

    Lab, Faculty of Electrical Engineering, Mathematics, and Computer Science, Delft University-to-day basis is constantly growing. Combined with a practically constant rate of faults per line of code in the software development cycle, which aim at exposing such discrepancies. In this context, automated diagnosis

  14. Development of a bridge fault extractor tool

    E-Print Network [OSTI]

    Bhat, Nandan D.

    2005-02-17T23:59:59.000Z

    as interlayer faults. An example of an intralayer fault is a bridge between two adjacent metal1 lines. An example of an interlayer fault is a short between overlapping polysilicon and metal1 lines. The rest of this thesis is organized as follows: Chapter 2... between two adjacent 6 metal1 lines. An example of an interlayer fault is a short between overlapping polysilicon and metal1 lines. A recent survey of fault extractors describes their different features [15]. Some tools such as VLASIC [16] attempt...

  15. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology and imple- #12;Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture

  16. Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture Systems ~ Wildlife Using Combined Snowpack and

    E-Print Network [OSTI]

    Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture, BCMOF 1 Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture

  17. Technical Report Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Technical Report Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife CONTENTS SUMMARY

  18. Technical Report Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Technical Report Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

  19. Technical Report Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Technical Report Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife CONTENTS

  20. Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture Systems ~ Wildlife Biology, Ecology, and Management

    E-Print Network [OSTI]

    Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife CONTENTS ABSTRACT

  1. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife Extension Note EN-007

  2. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife Extension Note

  3. Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture Systems ~ Wildlife Assessing Habitat Quality of

    E-Print Network [OSTI]

    Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife CONTENTS

  4. Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture Systems ~ Wildlife Silvicultural Treatments for Enhancing

    E-Print Network [OSTI]

    Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife CONTENTS EXECUTIVE SUMMARY

  5. Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture Systems ~ Wildlife Relationships between Elevation and Slope

    E-Print Network [OSTI]

    Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

  6. Dalton Lecture: How far can we go in distributed hydrological modelling?Hydrology and Earth System Sciences, 5(1), 1-12 (2001) EGS How far can we go in distributed hydrological modelling?

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Dalton Lecture: How far can we go in distributed hydrological modelling?Hydrology and Earth System Sciences, 5(1), 1-12 (2001) © EGS How far can we go in distributed hydrological modelling? Keith hydrological models in hydrology as an expression of a pragmatic realism. Some of the problems of distributed

  7. Hydrology-Aware Constrained Triangulation of Terrain Data

    E-Print Network [OSTI]

    Franklin, W. Randolph

    Hydrology-Aware Constrained Triangulation of Terrain Data Jonathan Muckella , Marcus Andradeb , W present a new data structure for simplifing terrain that captures hydrology significant features using. This allows better compression ratios the standard Triangu- lated Irregular Networks with highier hydrology

  8. Basic Ground-Water Hydrology By RALPH C. HEATH

    E-Print Network [OSTI]

    Sohoni, Milind

    #12;Basic Ground-Water Hydrology By RALPH C. HEATH Prepared in cooperation with the North Carolina., 1983, Basic ground-water hydrology: U .S. Geological Survey Water-Supply Paper 2220, 86 p. Library of Congress Cataloging-in-Publications Data Heath, Ralph C . Basic ground-water hydrology (Geological Survey

  9. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology Hudson and Axel Anderson KEYWORDS: Water management, Coastal watersheds, hydrological modeling CITATIONPractice. ResearchSection,Coast ForestRegion, BCMOF,Nanaimo, BC. Extension Note EN-022. EN-022 Hydrology March 2006

  10. Recent Developments in Bayesian Inference with Applications in Hydrology

    E-Print Network [OSTI]

    Berger, Jim

    : Recent Developments in Bayesian Inference with Applications in Hydrology . James O. Berger potential use in hydrology. These tools include Bayesian model selection, new computational techniques be applied to problems in hy­ drology. Keywords: Bayesian Inference, Hydrology, Model Selection, Bayes

  11. Assistant Professor of Wildland Watershed Hydrology University of California, Berkeley

    E-Print Network [OSTI]

    Silver, Whendee

    Assistant Professor of Wildland Watershed Hydrology University of California, Berkeley The faculty invites applications for a tenure-track, academic year appointment in Wildland Watershed Hydrology recognized research program in landscape-scale watershed hydrology related to the fields of climatology

  12. CONTINUOUSTIME FINITE ELEMENT ANALYSIS OF MULTIPHASE FLOW IN GROUNDWATER HYDROLOGY

    E-Print Network [OSTI]

    CONTINUOUS­TIME FINITE ELEMENT ANALYSIS OF MULTIPHASE FLOW IN GROUNDWATER HYDROLOGY Zhangxin Chen­water system in groundwater hydrology is given. The system is written in a fractional flow formulation, i for an air­water system in groundwater hydrology, ff = a; w [1], [11], [26]: @(OEae ff s ff ) @t +r \\Delta

  13. Hydrology and Geostatistics of a Vermont, USA Kettlehole Peatland

    E-Print Network [OSTI]

    Vermont, University of

    Hydrology and Geostatistics of a Vermont, USA Kettlehole Peatland Paula J. Mousera,*, W. Cully to hydrologic changes is imperative for successful conservation and remediation efforts. We studied a 1.25-ha Vermont kettlehole bog for one year (September 2001­October 2002) to identify hydrologic controls

  14. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology,Tsitika Watershed.Research Section,CoastForest Region,BCMOF, Nanaimo, BC. Extension Note EN-021. EN-021 Hydrology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife Extension Note EN-021 March 2006 Forest Research

  15. 2004 HYDROLOGY SECTION AWARD CITATION OF YORAM RUBIN

    E-Print Network [OSTI]

    Rubin, Yoram

    2004 HYDROLOGY SECTION AWARD CITATION OF YORAM RUBIN Yoram Rubin, Professor of Civil hydrology. Starting from 1987, Yoram has published a considerable body of important articles, primarily works have always addressed central problems of hydrologic modeling, on both fundamental and applied

  16. Institute of Hydraulic Engineering Department of Hydrology and Geohydrology

    E-Print Network [OSTI]

    Cirpka, Olaf Arie

    Institute of Hydraulic Engineering Department of Hydrology and Geohydrology Prof. Dr. rer. nat. Dr Measurements with Hydrologic Data H. Kindt 1, J. Riegger 1, A. Bárdossy 1, B. Devaraju 2 and N. Sneeuw 2 henry pattern for which storage changes can be constrained within the limits of hydrological data uncertainty. 2

  17. Hydrology in Practice Elizabeth M. Shaw -Former Lecturer and Hydrologist

    E-Print Network [OSTI]

    Chappell, Nick A

    Hydrology in Practice 4th Edition Elizabeth M. Shaw - Former Lecturer and Hydrologist Keith J Environment Centre, University of Lancaster, UK Rob Lamb - Consultant, JBA Consulting About the book Hydrology in Practice is an excellent and very successful introductory text for engineering hydrology students who go

  18. Weighted Parametric Operational Hydrology Forecasting Thomas E. Croley II1

    E-Print Network [OSTI]

    1 Weighted Parametric Operational Hydrology Forecasting Thomas E. Croley II1 1 Great Lakes forecasts in operational hydrology builds a sample of possibilities for the future, of climate series from-parametric method can be extended into a new weighted parametric hydrological forecasting technique to allow

  19. Snowcloud: A Complete Data Gathering System for Snow Hydrology Research

    E-Print Network [OSTI]

    Skalka, Christian

    Snowcloud: A Complete Data Gathering System for Snow Hydrology Research Christian Skalka gathering system for snow hydrology field re- search campaigns conducted in harsh climates and remote areas for understanding hydrological and ecological processes and incorporating those pro- cesses in agricultural

  20. The detection of high impedance faults using random fault behavior

    E-Print Network [OSTI]

    Carswell, Patrick Wayne

    1988-01-01T23:59:59.000Z

    In response to an Electric Power Research Institute (EPRI) request for pro- posed solutions for the detection of high impedance faults, the Hughes Aircraft Corporation developed a detection technique based solely on the level of the third harmonic current... for proposed solutions from EPRI that brought the Hughes technique, Power Technologies Incorporated (PTI) proposed a technique which statistically monitors the first, third, and fifth harmonics of current to make a, determination as to the presence of a high...

  1. Spatiotemporal variability of hydrologic response : an entropy-based approach using a distributed hydrologic model

    E-Print Network [OSTI]

    Castillo, Aldrich Edra

    2014-01-01T23:59:59.000Z

    Basin hydrologic response pertains to the partitioning of precipitation into stream-flow, evapotranspiration, and change in storage. The ability to explain or predict the response has many applications e.g. flood forecasting, ...

  2. Development of secondary faults between en echelon, oblique-slip faults: examples from basement controlled, small-fault systems in the Llano Uplift of central Texas

    E-Print Network [OSTI]

    Hedgcoxe, Howard Reiffert

    1987-01-01T23:59:59.000Z

    correspond to the NE trending set of faults and the secondary antithetic faults corre- spond to the N to NNE set (Figure 12). Fractures, represented by the dashed lines in Figure 12, occur in direct association with the primary and secondary faults...DEVELOPMENT OF SECONDARY FAULTS BETWEEN EN ECHELON, OBLIQUE-SLIP FAULTS: EXAMPLES FROM BASEMENT CONTROLLED, SMALL-FAULT SYSTEMS IN THE LLANO UPLIFT OF CENTRAL TEXAS A Thesis by HOWARD REIFFERT HEDGCOXE Submitted to the Graduate College...

  3. Crossing Active Faults on the Sakhalin II Onshore Pipeline Route: Pipeline Design and Risk Analysis

    SciTech Connect (OSTI)

    Mattiozzi, Pierpaolo [Snamprogetti-Saipem, Via Toniolo, 1, 61032 Fano (Italy); Strom, Alexander [Institute of Geospheres Dynamics, Leninskiy Avenue, 38, Building 1, 119334, Moscow (Russian Federation)

    2008-07-08T23:59:59.000Z

    Twin oil (20 and 24 inch) and gas (20 and 48 inch) pipeline systems stretching 800 km are being constructed to connect offshore hydrocarbon deposits from the Sakhalin II concession in the North to an LNG plant and oil export terminal in the South of Sakhalin island. The onshore pipeline route follows a regional fault zone and crosses individual active faults at 19 locations. Sakhalin Energy, Design and Construction companies took significant care to ensure the integrity of the pipelines, should large seismic induced ground movements occur during the Operational life of the facilities. Complex investigations including the identification of the active faults, their precise location, their particular displacement values and assessment of the fault kinematics were carried out to provide input data for unique design solutions. Lateral and reverse offset displacements of 5.5 and 4.5 m respectively were determined as the single-event values for the design level earthquake (DLE) - the 1000-year return period event. Within the constraints of a pipeline route largely fixed, the underground pipeline fault crossing design was developed to define the optimum routing which would minimize stresses and strain using linepipe materials which had been ordered prior to the completion of detailed design, and to specify requirements for pipe trenching shape, materials, drainage system, etc. Detailed Design was performed with due regard to actual topography and to avoid the possibility of the trenches freezing in winter, the implementation of specific drainage solutions and thermal protection measures.

  4. Crossing Active Faults on the Sakhalin II Onshore Pipeline Route: Analysis Methodology and Basic Design

    SciTech Connect (OSTI)

    Vitali, Luigino [Snamprogetti-Saipem, Via Toniolo, 1, 61032 Fano, Luigino (Italy); Mattiozzi, Pierpaolo [Snamprogetti-Saipem, Via Toniolo, 1, 61032 Fano (Italy)

    2008-07-08T23:59:59.000Z

    Twin oil (20 and 24 inch) and gas (20 and 48 inch) pipeline systems stretching 800 km are being constructed to connect offshore hydrocarbon deposits from the Sakhalin II concession in the North to an LNG plant and oil export terminal in the South of Sakhalin island. The onshore pipeline route follows a regional fault zone and crosses individual active faults at 19 locations. Sakhalin Energy, Design and Construction companies took significant care to ensure the integrity of the pipelines, should large seismic induced ground movements occur during the Operational life of the facilities. Complex investigations including the identification of the active faults, their precise location, their particular displacement values and assessment of the fault kinematics were carried out to provide input data for unique design solutions. Lateral and reverse offset displacements of 5.5 and 4.5 m respectively were determined as the single-event values for the design level earthquake (DLE)--the 1000-year return period event. Within the constraints of a pipeline route largely fixed, the underground pipeline fault crossing design was developed to define the optimum routing which would minimize stresses and strain using linepipe materials which had been ordered prior to the completion of detailed design, and to specify requirements for pipe trenching shape, materials, drainage system, etc. This Paper describes the steps followed to formulate the concept of the special trenches and the analytical characteristics of the Model.

  5. HYDROLOGICAL PROCESSES Hydrol. Process. 23, 20952101 (2009)

    E-Print Network [OSTI]

    Troch, Peter

    2009-01-01T23:59:59.000Z

    ., 2006; Lis et al., 2008). The capital cost is much lower, as well as the operation costs per analysed, Stockholm, Sweden 2 University of Arizona, Hydrology and Water Resources, Tucson, AZ, USA *Correspondence to), Pearce (1990), Burns (2002), Buttle and McDonnell (2004)] stream water comes. Such estimates can help

  6. bor is an e g hydrologic

    E-Print Network [OSTI]

    Holland, Jeffrey

    Jon Harb managin North Am environm Atmosph Research founding served a Denver a Harbor i extensive has co-a papers in sciences geograph from the American Society, New Zea Science Physical and the G bor is an e g hydrologic merica, Eur mental scien heric Science h, Interim D co-director as Dean

  7. Ch.10 Connections Why is hydrology important?

    E-Print Network [OSTI]

    Pan, Feifei

    , irrigation engineers have designed drainage systems to carry unwanted salts away from the agricultural areas in transporting dissolved and suspended materials through phases of biogeochemical cycles. #12;Irrigation Impacts The main purpose of irrigation is to modify the hydrological cycle in a way that allow crops to flourish

  8. Puna Geothermal Venture Hydrologic Monitoring Program

    SciTech Connect (OSTI)

    None

    1990-04-01T23:59:59.000Z

    This document provides the basis for the Hydrologic Monitoring Program (HMP) for the Puna Geothermal Venture. The HMP is complementary to two additional environmental compliance monitoring programs also being submitted by Puma Geothermal Venture (PGV) for their proposed activities at the site. The other two programs are the Meteorology and Air Quality Monitoring Program (MAQMP) and the Noise Monitoring Program (NMP), being submitted concurrently.

  9. HYDROLOGICAL PROCESSES Hydrol. Process. 21, 24472457 (2007)

    E-Print Network [OSTI]

    Reitsma, Femke E.

    2007-01-01T23:59:59.000Z

    HYDROLOGICAL PROCESSES Hydrol. Process. 21, 2447­2457 (2007) Published online 18 May 2007 in Wiley for simulating watershed runoff. This data model, called nen, allows users to visualize and analyse the processes, such as raster, that do not give direct insight into the spatial dynamics and distribution of the processes

  10. Hydrology of the Texas Blackland Prairie: Riesel Watershed Data and Published Hydrologic Relationships

    E-Print Network [OSTI]

    U.S. Department of Agriculture-Agricultural Research Service

    , OF MERCHANTABILITY OR FITNESS OF THE MATERIAL FOR ANY PARTICULAR PURPOSE, OR THAT THE USE OF THE MATERIAL WILL NOT INFRINGE ANY PATENT, COPYRIGHT, TRADEMARK, OR OTHER INTELLECTUAL PROPERTY RIGHTS, OR ANY OTHER EXPRESS OR IMPLIED WARRANTIES. Hydrology of the Texas..., OF MERCHANTABILITY OR FITNESS OF THE MATERIAL FOR ANY PARTICULAR PURPOSE, OR THAT THE USE OF THE MATERIAL WILL NOT INFRINGE ANY PATENT, COPYRIGHT, TRADEMARK, OR OTHER INTELLECTUAL PROPERTY RIGHTS, OR ANY OTHER EXPRESS OR IMPLIED WARRANTIES. Hydrology of the Texas...

  11. Field site investigation: Effect of mine seismicity on groundwater hydrology

    SciTech Connect (OSTI)

    Ofoegbu, G.I.; Hsiung, S.; Chowdhury, A.H. [Southwest Research Inst., San Antonio, TX (United States). Center for Nuclear Waste Regulatory Analyses; Philip, J. [Nuclear Regulatory Commission, Washington, DC (United States)

    1995-04-01T23:59:59.000Z

    The results of a field investigation on the groundwater-hydrologic effect of mining-induced earthquakes are presented in this report. The investigation was conducted at the Lucky Friday Mine, a silver-lead-zinc mine in the Coeur d`Alene Mining District of Idaho. The groundwater pressure in sections of three fracture zones beneath the water table was monitored over a 24-mo period. The fracture zones were accessed through a 360-m-long inclined borehole, drilled from the 5,700 level station of the mine. The magnitude, source location, and associated ground motions of mining-induced seismic events were also monitored during the same period, using an existing seismic instrumentation network for the mine, augmented with additional instruments installed specifically for the project by the center for Nuclear Waste Regulatory Analyses (CNWRA). More than 50 seismic events of Richter magnitude 1.0 or larger occurred during the monitoring period. Several of these events caused the groundwater pressure to increase, whereas a few caused it to decrease. Generally, the groundwater pressure increased as the magnitude of seismic event increased; for an event of a given magnitude, the groundwater pressure increased by a smaller amount as the distance of the observation point from the source of the event increased. The data was examined using regression analysis. Based on these results, it is suggested that the effect of earthquakes on groundwater flow may be better understood through mechanistic modeling. The mechanical processes and material behavior that would need to be incorporated in such a model are examined. They include a description of the effect of stress change on the permeability and water storage capacity of a fracture rock mass; transient fluid flow; and the generation and transmission of seismic waves through the rock mass.

  12. EnginEEring ZonE "The Engineering Zone

    E-Print Network [OSTI]

    Tobar, Michael

    EnginEEring ZonE "The Engineering Zone will push the limits in collaborative learning and research, and empower people to change the world. "Winthrop Professor John Dell Dean, Faculty of Engineering, Computing and Mathematics #12;2 | nEw CEntury Campaign ­ EnginEEring ZonE #12;nEw CEntury Campaign ­ EnginEEring ZonE | 3

  13. Estimation of hydrologic properties of an unsaturated, fractured rock mass

    SciTech Connect (OSTI)

    Klavetter, E.A.; Peters, R.R.

    1986-07-01T23:59:59.000Z

    In this document, two distinctly different approaches are used to develop continuum models to evaluate water movement in a fractured rock mass. Both models provide methods for estimating rock-mass hydrologic properties. Comparisons made over a range of different tuff properties show good qualitative and quantitative agreement between estimates of rock-mass hydrologic properties made by the two models. This document presents a general discussion of: (1) the hydrology of Yucca Mountain, and the conceptual hydrological model currently being used for the Yucca Mountain site, (2) the development of two models that may be used to estimate the hydrologic properties of a fractured, porous rock mass, and (3) a comparison of the hydrologic properties estimated by these two models. Although the models were developed in response to hydrologic characterization requirements at Yucca Mountain, they can be applied to water movement in any fractured rock mass that satisfies the given assumptions.

  14. Fault prophet : a fault injection tool for large scale computer systems

    E-Print Network [OSTI]

    Tchwella, Tal

    2014-01-01T23:59:59.000Z

    In this thesis, I designed and implemented a fault injection tool, to study the impact of soft errors for large scale systems. Fault injection is used as a mechanism to simulate soft errors, measure the output variability ...

  15. Realistic fault modeling and quality test generation of combined delay faults 

    E-Print Network [OSTI]

    Thadhlani, Ajaykumar A

    2001-01-01T23:59:59.000Z

    With increasing operating speed and shrinking technology, timing defects in integrated circuits are becoming increasingly important. The well established stuck-at-fault model is not sufficient because it is a static fault ...

  16. The effects of lithology and initial fault angle in physical models of fault-propagation folds

    E-Print Network [OSTI]

    McLain, Christopher Thomas

    2001-01-01T23:59:59.000Z

    Experimentally deformed physical rock models are used to examine the effects of changing mechanical stratigraphy and initial fault angle on the development of fault-propagation folds over a flat-ramp-flat thrust geometry. This study also...

  17. Fault-tolerant dynamic task graph scheduling

    SciTech Connect (OSTI)

    Kurt, Mehmet C.; Krishnamoorthy, Sriram; Agrawal, Kunal; Agrawal, Gagan

    2014-11-16T23:59:59.000Z

    In this paper, we present an approach to fault tolerant execution of dynamic task graphs scheduled using work stealing. In particular, we focus on selective and localized recovery of tasks in the presence of soft faults. We elicit from the user the basic task graph structure in terms of successor and predecessor relationships. The work stealing-based algorithm to schedule such a task graph is augmented to enable recovery when the data and meta-data associated with a task get corrupted. We use this redundancy, and the knowledge of the task graph structure, to selectively recover from faults with low space and time overheads. We show that the fault tolerant design retains the essential properties of the underlying work stealing-based task scheduling algorithm, and that the fault tolerant execution is asymptotically optimal when task re-execution is taken into account. Experimental evaluation demonstrates the low cost of recovery under various fault scenarios.

  18. Shallow seismic reflection confirmation of Berea gas pool structure and faulting, Portage County, Ohio

    SciTech Connect (OSTI)

    Sergoulopoulos, A.; Coogan, A.H.; Palmer, D.F.

    1987-09-01T23:59:59.000Z

    The Mississippian Berea Sandstone is a reservoir for shallow gas in Suffield Township, Portage County, Ohio, in the informally named St. Joseph's Church field. Production of natural gas from the Berea reservoir is from sandstone up to 60 ft (18 m) thick with porosity in the 15-25% range. The field, which is at about 400 ft (720 ft above sea level), lies updip from the Akron-Suffield fault zone and more or less along strike from the Berea gas field in Randolph Township to the southeast. The trap for the gas is anticlinal and overlying Sunbury shale (so called Coffee shale) is the seal. Initial field pressures were about 80-100 psi (552 kPa). A shallow seismic survey of 6 refraction and 26 CDP reflection lines was made, using a six-channel Bison recording unit. Reflections were obtained from depths down to 800 ft through well-documented formations of known lithology, including glacial till (kame and non-kame), Sharon Shale, Sharone Sandstone, Sunbury Shale, Berea Sandstone, Bedford Shale, and Ohio Shale. Correlation of the seismic data with logs from three separate wells drilled with cable tools was used to derive interval velocities for depth control. Seismic reflections from the top of the Berea Sandstone were consistent over the area with depths from wells. Unexpectedly high elevations of the Berea Sandstone on the southern crest of the anticlinal dome lay in a straight line trending east-west. This suggests the presence of a fault with a general east-west strike and vertical displacement of 15-18 ft. Marginal gas production was encountered just north of the plotted fault on a line between the best producing wells on 450-500 ft centers. Better gas-producing wells lie on the downthrown side of the small eastwest fault and close to the fault. The fault is probably one of many in the area and may be a splinter fault of the Akron-Suffield fault zone.

  19. The Enterprise Zone (Rhode Island)

    Broader source: Energy.gov [DOE]

    The Enterprise Zone offers tax incentives to business expanding their workforce by 5% at facilities in designated enterprise zones. The tax credit is equal to 50% of the annual wages paid to a new...

  20. Radiant zone heated particulate filter

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI

    2011-12-27T23:59:59.000Z

    A system includes a particulate matter (PM) filter including an upstream end for receiving exhaust gas and a downstream end. A radiant zoned heater includes N zones, where N is an integer greater than one, wherein each of the N zones includes M sub-zones, where M is an integer greater than or equal to one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones, restricts exhaust gas flow in a portion of the PM filter that corresponds to the selected one of the N zones, and deactivates non-selected ones of the N zones.

  1. Automated Fault Location In Smart Distribution Systems

    E-Print Network [OSTI]

    Lotfifard, Saeed

    2012-10-19T23:59:59.000Z

    Quality Meters (PQM), are installed to capture harmonics and certain disturbances for analyzing the power quality indices. Digital Protective Relays are utilized to detect occurrence of the faults and isolate faulted section as fast as possible. Digital... Protective Relays) use synchronous methods [28]. Therefore, if the available data is provided by RTUs, fault location methods that operate based on direct comparison of the input samples cannot be 17 utilized. However, if the data could be gathered from...

  2. Persistence of Hydrologic Variables and Reactive Stream Solute Concentrations in an East Tennessee Watershed

    SciTech Connect (OSTI)

    Koirala, Shesh R [ORNL; Gentry, Randall W [ORNL; Mulholland, Patrick J [ORNL; Perfect, Edmund [ORNL; Schwartz, John S [ORNL; Sayler, Gary Steven [ORNL

    2011-01-01T23:59:59.000Z

    Time and frequency domain analyses were conducted on weekly time series of water chemistry (nitrate, sulfate and calcium concentrations) collected from November 1995 to December 2005 at the West Fork of Walker Branch in Oak Ridge, Tennessee to evaluate the extent of their persistence and the relationship of this persistence to discharge and rainfall. In this study, spectral and wavelet analyses provided a theoretical basis for insights into long-term water chemistry behavior. All water chemistry parameters showed some level of persistence that was influenced by rainfall and/or discharge. Short-term persistence (less than a year) was related to the persistence of rainfall and discharge, whereas long-term persistence (more than a year) was related to the persistence of discharge. The Walker Branch conceptual hydrology model is augmented by these results that relate characteristic periodicities with flowpaths through different zones: the vadose zone (< 20 week period), saturated zone (20-50 week period) and bedrock zone (> 50 week period) with implications for reactive chemistries within the watershed. (C) 2011 Elsevier B.V. All rights reserved.

  3. Detachment Faulting & Geothermal Resources - Pearl Hot Spring...

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

    Faulting & Geothermal Resources - Pearl Hot Spring, NV Conducting a 3D Converted Shear Wave Project to Reduce Exploration Risk at Wister, CA Crump Geyser: High Precision...

  4. Vadose zone water fluxmeter

    DOE Patents [OSTI]

    Faybishenko, Boris A.

    2005-10-25T23:59:59.000Z

    A Vadose Zone Water Fluxmeter (WFM) or Direct Measurement WFM provides direct measurement of unsaturated water flow in the vadose zone. The fluxmeter is a cylindrical device that fits in a borehole or can be installed near the surface, or in pits, or in pile structures. The fluxmeter is primarily a combination of tensiometers and a porous element or plate in a water cell that is used for water injection or extraction under field conditions. The same water pressure measured outside and inside of the soil sheltered by the lower cylinder of the fluxmeter indicates that the water flux through the lower cylinder is similar to the water flux in the surrounding soil. The fluxmeter provides direct measurement of the water flow rate in the unsaturated soils and then determines the water flux, i.e. the water flow rate per unit area.

  5. Towards Fault-Tolerant Digital Microfluidic Lab-on-Chip: Defects, Fault Modeling, Testing, and Reconfiguration

    E-Print Network [OSTI]

    Chakrabarty, Krishnendu

    Towards Fault-Tolerant Digital Microfluidic Lab-on-Chip: Defects, Fault Modeling, Testing, NC 27708, USA Abstract Dependability is an important attribute for microfluidic lab-on-chip devices microfluidic lab-on-chip systems. Defects are related to logical fault models that can be viewed not only

  6. Contribution of Identified Active Faults to Near Fault Seismic Hazard in the Flinders Ranges

    E-Print Network [OSTI]

    Sandiford, Mike

    Somerville1 , Peggy Quijada1 , Hong Kie Thio1 , Mike Sandiford2 and Mark Quigley2 1. URS Corporation estimates of fault slip rate from Quigley et al. (2006) to quantify the seismic activity rate on the faults of these models was used in conjunction with the active fault model. Quigley et al. (2006) identified a system

  7. A fault location approach for fuzzy fault section estimation on radial distribution feeders

    E-Print Network [OSTI]

    Andoh, Kwame Sarpong

    2000-01-01T23:59:59.000Z

    was involved in the fault was evaluated using the event-phase possibility values and line section phase topology information. The fault distance algorithm was used to eliminate sections of the feeder that were not likely to be possible faulted section...

  8. Challenges in defining a radiologic and hydrologic source term for underground nuclear test centers, Nevada Test Site, Nye County, Nevada

    SciTech Connect (OSTI)

    Smith, D.K.

    1995-06-01T23:59:59.000Z

    The compilation of a radionuclide inventory for long-lived radioactive contaminants residual from nuclear testing provides a partial measure of the radiologic source term at the Nevada Test Site. The radiologic source term also includes potentially mobile short-lived radionuclides excluded from the inventory. The radiologic source term for tritium is known with accuracy and is equivalent to the hydrologic source term within the saturated zone. Definition of the total hydrologic source term for fission and activation products that have high activities for decades following underground testing involves knowledge and assumptions which are presently unavailable. Systematic investigation of the behavior of fission products, activation products and actinides under saturated or Partially saturated conditions is imperative to define a representative total hydrologic source term. This is particularly important given the heterogeneous distribution of radionuclides within testing centers. Data quality objectives which emphasize a combination of measurements and credible estimates of the hydrologic source term are a priority for near-field investigations at the Nevada Test Site.

  9. Shallow faults mapped with seismic reflections: Lost River Fault, Idaho

    E-Print Network [OSTI]

    Mubarik, Ali; Miller, Richard D.; Steeples, Don W.

    1991-09-01T23:59:59.000Z

    stations 132 and 160. Total bedrock dis?lace- ment interpreted along this seismic survey line is approxa- mately 6 m, representing 4 to 6 times more displacement than is observed on either the common offset refraction section or at the surface..., vol. A, U.S. Geological Survey Open-file Report 85-290, 182-194, 1985. Crone, A. J., and M. N. Macbette, Surface faulting accompa- nying the Borah Peak earthquake, central Idaho, Geology, 12, 664-667, 1984. Crone, A. J., M. N. Macbette, M. G...

  10. Accurate resistive bridge fault modeling, simulation, and test generation 

    E-Print Network [OSTI]

    Sar-Dessai, Vijay Ramesh

    1999-01-01T23:59:59.000Z

    Resistive bridging faults in CMOS combinational circuits are studied in this work. Bridging faults are modeled using HSPICE circuit simulation of the various types of bridging faults that can occur in CMOS combinational ...

  11. Earthquake behavior and structure of oceanic transform faults

    E-Print Network [OSTI]

    Roland, Emily Carlson

    2012-01-01T23:59:59.000Z

    Oceanic transform faults that accommodate strain at mid-ocean ridge offsets represent a unique environment for studying fault mechanics. Here, I use seismic observations and models to explore how fault structure affects ...

  12. Low-cost motor drive embedded fault diagnosis systems

    E-Print Network [OSTI]

    Akin, Bilal

    2009-05-15T23:59:59.000Z

    Electric motors are used widely in industrial manufacturing plants. Bearing faults, insulation faults, and rotor faults are the major causes of electric motor failures. Based on the line current analysis, this dissertation mainly deals with the low...

  13. Accurate resistive bridge fault modeling, simulation, and test generation

    E-Print Network [OSTI]

    Sar-Dessai, Vijay Ramesh

    1999-01-01T23:59:59.000Z

    Resistive bridging faults in CMOS combinational circuits are studied in this work. Bridging faults are modeled using HSPICE circuit simulation of the various types of bridging faults that can occur in CMOS combinational circuits. The results...

  14. Variation and correlation of hydrologic properties

    SciTech Connect (OSTI)

    Wang, J.S.Y. [Lawrence Berkeley Lab., CA (United States)

    1991-06-01T23:59:59.000Z

    Hydrological properties vary within a given geological formation and even more so among different soil and rock media. The variance of the saturated permeability is shown to be related to the variance of the pore-size distribution index of a given medium by a simple equation. This relationship is deduced by comparison of the data from Yucca Mountain, Nevada (Peters et al., 1984), Las Cruces, New Mexico (Wierenga et al., 1989), and Apache Leap, Arizona (Rasmussen et al., 1990). These and other studies in different soils and rocks also support the Poiseuille-Carmen relationship between the mean value of saturated permeability and the mean value of capillary radius. Correlations of the mean values and variances between permeability and pore-geometry parameters can lead us to better quantification of heterogeneous flow fields and better understanding of the scaling laws of hydrological properties.

  15. Improving Distribution System Reliability Through Risk-base Doptimization of Fault Management and Improved Computer-based Fault Location

    E-Print Network [OSTI]

    Dong, Yimai

    2013-11-07T23:59:59.000Z

    )’s regulation on power quality. Optimization in fault management tasks has the potential of improving system reliability by reducing the duration and scale of outages caused by faults through fast fault isolation and service restoration. The research reported...

  16. Evaluation of faulting characteristics and ground acceleration associated with recent movement along the Meers Fault, Southwestern Oklahoma

    E-Print Network [OSTI]

    Burrell, Richard Dennis

    1997-01-01T23:59:59.000Z

    Recent studies have shown that a 27 km section of the Meers Fault was reactivated during Holocene time. Although these studies have proven the occurrence of recent fault activity, many basic characteristics of the faulting remain unresolved...

  17. An algorithm for faulted phase and feeder selection under high impedance fault conditions

    E-Print Network [OSTI]

    Benner, Carl Lee

    1988-01-01T23:59:59.000Z

    proximate lines served by the same substation. Because of this signal propagation, a fault will be detected simultaneously on the faulted line and possibly several other lines served by the substation. Since it would not be plausible for a utility company... to deenergize the entire area served by a substation due to a high impedance fault on one lateral, a technique is needed to discriminate the faulted line from neighboring healthy feeders and healthy phases of the faulted feeder. Such a technique would also...

  18. active fault segments: Topics by E-print Network

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

    Fault activation Kuzmanov, Georgi 140 Early stage evolution of growth faults: 3D seismic insights from the Levant Basin, Eastern Mediterranean Materials Science Websites...

  19. Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems

    E-Print Network [OSTI]

    Najafi, Massieh

    2010-01-01T23:59:59.000Z

    in Fault Diagnostics for HVAC Systems Massieh Najafi 1 ,tools for determining HVAC diagnostics, methods todetect faults in HVAC systems are still generally

  20. Fault-tolerant TCP mechanisms 

    E-Print Network [OSTI]

    Satapati, Suresh Kumar

    2000-01-01T23:59:59.000Z

    point (TSAPs). In BSD, a service access point is a TCP socket identified by an IP address and port number, A TCP based fault-tolerant service is realized by replicating a server program onto one or more hosts and by having all replicas bind... backup sends the SEQUENCE NUMBER of the segment it recently sent. Since the primary server doesn't exist, the client does not acknowledge. The TCP on backup server keeps retransmitting the same segment, which can be counted to initiate a...

  1. abnormal resistive zones: Topics by E-print Network

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

    NO PRINTING ZONE NO PRINTING ZONE NO PRINTING ZONE NO PRINTING ZONE Kainen, Paul C. 11 Seismic Amplitude Versus Offset (AVO) Character of Geopressured Transition Zones Geosciences...

  2. A Conceptual Restoration Plan and Tidal Hydrology Assessment for Reconnecting Spring Branch Creek to Suisun Marsh, Solano County, California

    E-Print Network [OSTI]

    Olson, Jessica J.

    2012-01-01T23:59:59.000Z

    Marsh. UC Berkeley LA 222 Hydrology Term Paper. Orr, M. , S.Restoration Plan and Tidal Hydrology Assessment forthree consists of a tidal hydrology analysis before and

  3. Optimized Fault Location Final Project Report

    E-Print Network [OSTI]

    Engineering Research Center Optimized Fault Location Concurrent Technologies Corporation Final Project Report by the Concurrent Technologies Corporation (CTC) and the Power Systems Engineering Research Center (PSERC). NeitherOptimized Fault Location Final Project Report Power Systems Engineering Research Center A National

  4. Sensor Fault Diagnosis Using Principal Component Analysis 

    E-Print Network [OSTI]

    Sharifi, Mahmoudreza

    2010-07-14T23:59:59.000Z

    The purpose of this research is to address the problem of fault diagnosis of sensors which measure a set of direct redundant variables. This study proposes: 1. A method for linear senor fault diagnosis 2. An analysis of isolability and detectability...

  5. Sensor Fault Diagnosis Using Principal Component Analysis

    E-Print Network [OSTI]

    Sharifi, Mahmoudreza

    2010-07-14T23:59:59.000Z

    The purpose of this research is to address the problem of fault diagnosis of sensors which measure a set of direct redundant variables. This study proposes: 1. A method for linear senor fault diagnosis 2. An analysis of isolability and detectability...

  6. INDUCTION MOTOR FAULT DIAGNOSTIC AND MONITORING METHODS

    E-Print Network [OSTI]

    Povinelli, Richard J.

    INDUCTION MOTOR FAULT DIAGNOSTIC AND MONITORING METHODS by Aderiano M. da Silva, B.S. A Thesis;i Abstract Induction motors are used worldwide as the "workhorse" in industrial applications material. However, induction motor faults can be detected in an initial stage in order to prevent

  7. Liquid zone seal

    DOE Patents [OSTI]

    Klebanoff, Leonard E. (Dublin, CA)

    2001-01-01T23:59:59.000Z

    A seal assembly that provides a means for establishing multiple pressure zones within a system. The seal assembly combines a plate extending from the inner wall of a housing or inner enclosure that intersects with and is immersed in the fluid contained in a well formed in a tray contained within the enclosure. The fluid is a low vapor pressure oil, chemically inert and oxidation resistant. The use of a fluid as the sealing component provides a seal that is self-healing and mechanically robust not subject to normal mechanical wear, breakage, and formation of cracks or pinholes and decouples external mechanical vibrations from internal structural members.

  8. Saturated Zone Colloid Transport

    SciTech Connect (OSTI)

    H. S. Viswanathan

    2004-10-07T23:59:59.000Z

    This scientific analysis provides retardation factors for colloids transporting in the saturated zone (SZ) and the unsaturated zone (UZ). These retardation factors represent the reversible chemical and physical filtration of colloids in the SZ. The value of the colloid retardation factor, R{sub col} is dependent on several factors, such as colloid size, colloid type, and geochemical conditions (e.g., pH, Eh, and ionic strength). These factors are folded into the distributions of R{sub col} that have been developed from field and experimental data collected under varying geochemical conditions with different colloid types and sizes. Attachment rate constants, k{sub att}, and detachment rate constants, k{sub det}, of colloids to the fracture surface have been measured for the fractured volcanics, and separate R{sub col} uncertainty distributions have been developed for attachment and detachment to clastic material and mineral grains in the alluvium. Radionuclides such as plutonium and americium sorb mostly (90 to 99 percent) irreversibly to colloids (BSC 2004 [DIRS 170025], Section 6.3.3.2). The colloid retardation factors developed in this analysis are needed to simulate the transport of radionuclides that are irreversibly sorbed onto colloids; this transport is discussed in the model report ''Site-Scale Saturated Zone Transport'' (BSC 2004 [DIRS 170036]). Although it is not exclusive to any particular radionuclide release scenario, this scientific analysis especially addresses those scenarios pertaining to evidence from waste-degradation experiments, which indicate that plutonium and americium may be irreversibly attached to colloids for the time scales of interest. A section of this report will also discuss the validity of using microspheres as analogs to colloids in some of the lab and field experiments used to obtain the colloid retardation factors. In addition, a small fraction of colloids travels with the groundwater without any significant retardation. Radionuclides irreversibly sorbed onto this fraction of colloids also transport without retardation. The transport times for these radionuclides will be the same as those for nonsorbing radionuclides. The fraction of nonretarding colloids developed in this analysis report is used in the abstraction of SZ and UZ transport models in support of the total system performance assessment (TSPA) for the license application (LA). This analysis report uses input from two Yucca Mountain Project (YMP) analysis reports. This analysis uses the assumption from ''Waste Form and In-Drift Colloids-Associated Radionuclide Concentrations: Abstraction and Summary'' that plutonium and americium are irreversibly sorbed to colloids generated by the waste degradation processes (BSC 2004 [DIRS 170025]). In addition, interpretations from RELAP analyses from ''Saturated Zone In-Situ Testing'' (BSC 2004 [DIRS 170010]) are used to develop the retardation factor distributions in this analysis.

  9. Self-triggering superconducting fault current limiter

    DOE Patents [OSTI]

    Yuan, Xing (Albany, NY); Tekletsadik, Kasegn (Rexford, NY)

    2008-10-21T23:59:59.000Z

    A modular and scaleable Matrix Fault Current Limiter (MFCL) that functions as a "variable impedance" device in an electric power network, using components made of superconducting and non-superconducting electrically conductive materials. The matrix fault current limiter comprises a fault current limiter module that includes a superconductor which is electrically coupled in parallel with a trigger coil, wherein the trigger coil is magnetically coupled to the superconductor. The current surge doing a fault within the electrical power network will cause the superconductor to transition to its resistive state and also generate a uniform magnetic field in the trigger coil and simultaneously limit the voltage developed across the superconductor. This results in fast and uniform quenching of the superconductors, significantly reduces the burnout risk associated with non-uniformity often existing within the volume of superconductor materials. The fault current limiter modules may be electrically coupled together to form various "n" (rows).times."m" (columns) matrix configurations.

  10. California climate change, hydrologic response, and flood forecasting

    E-Print Network [OSTI]

    Miller, Norman L.

    2003-01-01T23:59:59.000Z

    U.S. Geological Survey, Water Res. Investigations Rep. 95-United States. J. Amer. Water Resources Assoc, 35, 1525-hydrology. J. American Water Resources Association, 39, 771-

  11. assessing hydrological alteration: Topics by E-print Network

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

    Society (SFHS) is a non-profit, professional society, established to provide Sukop, Mike 217 South Florida Hydrologic Society Dr Joseph D Hughes Geosciences Websites Summary:...

  12. Regional hydrology of the Dixie Valley geothermal field, Nevada...

    Open Energy Info (EERE)

    hydrology of the Dixie Valley geothermal field, Nevada- Preliminary interpretations of chemical and isotopic data Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  13. Development of Advanced Thermal-Hydrological-Mechanical-Chemical...

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

    presentation at the April 2013 peer review meeting held in Denver, Colorado. yushuwuthmcmodelingpeer2013.pdf More Documents & Publications Coupled Thermal-Hydrological-Me...

  14. Coupled Thermal-Hydrological-Mechanical-Chemical Model And Experiments...

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

    Coupled Thermal-Hydrological-Mechanical-Chemical Model And Experiments For Optimization Of Enhanced Geothermal System Development And Production: Evaluation of Stimulation at the...

  15. Coupled Thermal-Hydrological-Mechanical-Chemical Model and Experiments...

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

    Coupled Thermal-Hydrological-Mechanical-Chemical Model and Experiments for Optimization of Enhanced Geothermal System Development and Production Eric Sonnenthal (PI) Jonny...

  16. Contaminants in Vadose Zone Environments

    SciTech Connect (OSTI)

    Wellman, Dawn M.; Freshley, Mark D.; Johnson, Timothy C.; Miracle, Ann L.

    2012-11-01T23:59:59.000Z

    Contaminants in vadose zone environments pose a long-term source and threat to groundwater resources, human health, and the environment. Several technical, regulatory, and policy challenges and opportunities are associated with contamination in vadose zone environments, particularly in remediation. In this special issue, ten papers present novel approaches to characterize, monitor, remediate, and predict the transport and fate of contaminants in vadose zone environments.

  17. Hydrological processes and their seasonal controls in a small Mediterranean mountain catchment in the Pyrenees Hydrology and Earth System Sciences, 6(3), 527537 (2002) EGS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Hydrological processes and their seasonal controls in a small Mediterranean mountain catchment in the Pyrenees 527 Hydrology and Earth System Sciences, 6(3), 527­537 (2002) © EGS Hydrological processes in the catchments, playing a relevant hydrological and geomorphic role. Annual precipitation is 924 mm and potential

  18. The role of a dambo in the hydrology of a catchment and the river network downstream Hydrology and Earth System Sciences, 7(3), 339357 (2003) EGU

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The role of a dambo in the hydrology of a catchment and the river network downstream 339 Hydrology and Earth System Sciences, 7(3), 339357 (2003) © EGU The role of a dambo in the hydrology of a catchment and Southern Africa. Owing to their importance in local agriculture and as a water resource, the hydrology

  19. Recession-based hydrological models for estimating low flows in ungauged catchments in the Himalayas Hydrology and Earth System Sciences, 8(5), 891902 (2004) EGU

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Recession-based hydrological models for estimating low flows in ungauged catchments in the Himalayas 891 Hydrology and Earth System Sciences, 8(5), 891902 (2004) © EGU Recession-based hydrological.R. Young1 and S.R. Kansakar2 1 Centre for Ecology and Hydrology,Wallingford, Oxfordshire, OX10 8BB, UK 2

  20. The Pipe vs. The Shed: Waste Water compared with Natural Hydrology in an Urban Setting

    E-Print Network [OSTI]

    Lather, Alaska; Wozniak, Monika

    2011-01-01T23:59:59.000Z

    Water compared with Natural Hydrology in an Urban Setting Bypaper was to compare the hydrology of the East Bay Municipala stream and watershed hydrology. Using stream flow data for

  1. GEOCHEMISTRY AND ISOTOPE HYDROLOGY OF GROUNDWATERS IN THE STRIPA GRANITE RESULTS AND PRELIMINARY INTERPRETATION

    E-Print Network [OSTI]

    Fritz, P.

    2011-01-01T23:59:59.000Z

    S. Italy). In Isotope Hydrology, IAEA Symposium. Sm-129/53,isotopic variations in hydrology. At. Energy Rev. 14: 621-70 GEOCHEMISTRY AND ISOTOPE HYDROLOGY OF GROUNDWATERS IN THE

  2. Western Renewable Energy Zones (Presentation)

    SciTech Connect (OSTI)

    Hein, J.

    2011-06-01T23:59:59.000Z

    This presentation summarizes recent developments and trends pertaining to competitive renewable energy zones, transmission planning and the integration of renewable generation resources.

  3. Fault-Tolerant CCM Middleware for Embedded Adaptive Dependability (MEAD)

    E-Print Network [OSTI]

    Narasimhan, Priya

    Fault-Tolerant CCM Middleware for Embedded Adaptive Dependability (MEAD) Real-Time Fault Narasimhan Carnegie Mellon University CCM Workshop, Nashville, TN December 10, 2003 #12;12/11/2003 Page 2 Model precursor to a real-time fault tolerant CCM ­ Real-Time Fault Tolerant CORBA Standard RFP launched

  4. Breathing zone air sampler

    SciTech Connect (OSTI)

    Tobin, John (Bethel Park, PA)

    1989-01-01T23:59:59.000Z

    A sampling apparatus is provided which comprises a sampler for sampling air in the breathing zone of a wearer of the apparatus and a support for the sampler preferably in the form of a pair of eyeglasses. The sampler comprises a sampling assembly supported on the frame of the eyeglasses and including a pair of sample transport tubes which are suspended, in use, centrally of the frame so as to be disposed on opposite sides of the nose of the wearer and which each include an inlet therein that, in use, is disposed adjacent to a respective nostril of the nose of the wearer. A filter holder connected to sample transport tubes supports a removable filter for filtering out particulate material in the air sampled by the apparatus. The sample apparatus is connected to a pump for drawing air into the apparatus through the tube inlets so that the air passes through the filter.

  5. Breathing zone air sampler

    SciTech Connect (OSTI)

    Tobin, J.

    1989-08-22T23:59:59.000Z

    A sampling apparatus is presented which comprises a sampler for sampling air in the breathing zone of a wearer of the apparatus and a support for the sampler preferably in the form of a pair of eyeglasses. The sampler comprises a sampling assembly supported on the frame of the eyeglasses and including a pair of sample transport tubes which are suspended, in use, centrally of the frame so as to be disposed on opposite sides of the nose of the wearer and which each include an inlet therein that, in use, is disposed adjacent to a respective nostril of the nose of the wearer. A filter holder connected to sample transport tubes supports a removable filter for filtering out particulate material in the air sampled by the apparatus. The sample apparatus is connected to a pump for drawing air into the apparatus through the tube inlets so that the air passes through the filter.

  6. Anomalous zones in Gulf Coast Salt domes with special reference to Big Hill, TX, and Weeks Island, LA

    SciTech Connect (OSTI)

    Neal, J.T. [Sandia National Labs., Albuquerque, NM (United States); Magorian, T.R. [Magorian (Thomas R.), Amherst, NY (United States); Thoms, R.L. [AGM, Inc., College Station, TX (United States); Autin, W.J.; McCulloh, R.P. [Louisiana Geological Survey, Baton Rouge, LA (United States); Denzler, S.; Byrne, K.O. [Acres International Corp., Amherst, NY (United States)

    1993-07-01T23:59:59.000Z

    Anomalous features in Gulf Coast Salt domes exhibit deviations from normally pure salt and vary widely in form from one dome to the next, ranging considerably in length and width. They have affected both conventional and solution mining in several ways. Gas outbursts, insolubles, and potash (especially carnallite) have led to the breakage of tubing in a number of caverns, and caused irregular shapes of many caverns through preferential leaching. Such anomalous features essentially have limited the lateral extent of conventional mining at several salt mines, and led to accidents and even the closing of several other mines. Such anomalous features, are often aligned in anomalous zones, and appear to be related to diapiric processes of salt dome development. Evidence indicates that anomalous zones are found between salt spines, where the differential salt intrusion accumulates other materials: Anhydrite bands which are relatively strong, and other, weaker impurities. Shear zones and fault displacement detected at Big Hill and Weeks Island domes have not yet had any known adverse impacts on SPR oil storage, but new caverns at these sites conceivably may encounter some potentially adverse conditions. Seismic reflection profiles at Big Hill dome have shown numerous fractures and faults in the caprock, and verified the earlier recognition of a major shear zone transecting the entire salt stock and forming a graben in the overlying caprock. Casing that is placed in such zones can be at risk. Knowledge of these zones should create awareness of possible effects rather than preclude the future emplacement of caverns. To the extent possible, major anomalous zones and salt stock boundaries should be avoided. Shear zones along overhangs may be particularly hazardous, and otherwise unknown valleys in the top of salt may occur along shear zones. These zones often can be mapped geophysically, especially with high-resolution seismic techniques.

  7. Mechanical Models of Fault-Related Folding

    SciTech Connect (OSTI)

    Johnson, A. M.

    2003-01-09T23:59:59.000Z

    The subject of the proposed research is fault-related folding and ground deformation. The results are relevant to oil-producing structures throughout the world, to understanding of damage that has been observed along and near earthquake ruptures, and to earthquake-producing structures in California and other tectonically-active areas. The objectives of the proposed research were to provide both a unified, mechanical infrastructure for studies of fault-related foldings and to present the results in computer programs that have graphical users interfaces (GUIs) so that structural geologists and geophysicists can model a wide variety of fault-related folds (FaRFs).

  8. 1. Detect ground faults in PV arrays mounted on the roofs of 2. Interrupt the fault current

    E-Print Network [OSTI]

    Johnson, Eric E.

    1. Detect ground faults in PV arrays mounted on the roofs of dwellings 2. Interrupt the fault current 3. Indicate that a ground fault had occurred 4. Disconnect the faulted part of the PV array 5. "Crowbar" (short-circuit) the PV array The original GFPD prototype was developed in two versions that were

  9. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology-748-1331. mdeact@shaw.ca #12;Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology

  10. Technical Report Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture Systems ~ Wildlife

    E-Print Network [OSTI]

    Technical Report Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology.for.gov.bc.ca/vancouvr/research/research_index.htm #12;Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture

  11. Technical Report Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Technical Report Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology.for.gov.bc.ca/vancouvr/research/research_index.htm #12;Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture

  12. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology, BC, V9J 1G4 #12;Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology

  13. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology Rd., Black Creek, BC, V9J 1G4 #12;Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology

  14. Integrated Network of Scientific Information and GeoHydrologic Tools

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    INSIGHT: Integrated Network of Scientific Information and GeoHydrologic Tools Laura Paeglis, IWM and GeoHydrologic Tools #12;What is INSIGHT? · Interactive, web-based maps. · Evaluations of basins and their status as fully or overappropriated. · Educational tool for water managers and the public. · One

  15. Potential hydrologic characterization wells in Amargosa Valley

    SciTech Connect (OSTI)

    Lyles, B.; Mihevc, T.

    1994-09-01T23:59:59.000Z

    More than 500 domestic, agricultural, and monitoring wells were identified in the Amargosa Valley. From this list, 80 wells were identified as potential hydrologic characterization wells, in support of the US Department of Energy (DOE) Underground Test Area/Remedial Investigation and Feasibility Study (UGTA/RIFS). Previous hydrogeologic studies have shown that groundwater flow in the basin is complex and that aquifers may have little lateral continuity. Wells located more than 10 km or so from the Nevada Test Site (NTS) boundary may yield data that are difficult to correlate to sources from the NTS. Also, monitoring well locations should be chosen within the guidelines of a hydrologic conceptual model and monitoring plan. Since these do not exist at this time, recompletion recommendations will be restricted to wells relatively close (approximately 20 km) to the NTS boundary. Recompletion recommendations were made for two abandoned agricultural irrigation wells near the town of Amargosa Valley (previously Lathrop Wells), for two abandoned wildcat oil wells about 10 km southwest of Amargosa Valley, and for Test Well 5 (TW-5), about 10 km east of Amargosa Valley.

  16. Structure of the eastern Red Rocks and Wind Ridge thrust faults, Wyoming: how a thrust fault gains displacement along strike 

    E-Print Network [OSTI]

    Huntsman, Brent Stanley

    1983-01-01T23:59:59.000Z

    OF FIELD MAPPING Methods . Thrust Faults . The Wind Ridge Thrust Fault System The Red Rocks Thrust Fault System CLAY MODEL STUDIES Purpose and Description Model Results DISCUSSION OF RESULTS Kinematics of the Red Rocks Thrust Fault Termination... . Kinematics of the Southern Wind Ridge Thrust Fault . . . A Conceptual Model of the Red Rocks Thrust Fault Termination Implications of the Red Rocks Fault Termination . . . . . . Page V1 V11 1X X1 X11 7 9 17 18 18 21 24 27 35 35 38 49 49...

  17. Zone refining of plutonium metal

    SciTech Connect (OSTI)

    Blau, M.S.

    1994-08-01T23:59:59.000Z

    The zone refining process was applied to Pu metal containing known amounts of impurities. Rod specimens of plutonium metal were melted into and contained in tantalum boats, each of which was passed horizontally through a three-turn, high-frequency coil in such a manner as to cause a narrow molten zone to pass through the Pu metal rod 10 times. The impurity elements Co, Cr, Fe, Ni, Np, U were found to move in the same direction as the molten zone as predicted by binary phase diagrams. The elements Al, Am, and Ga moved in the opposite direction of the molten zone as predicted by binary phase diagrams. As the impurity alloy was zone refined, {delta}-phase plutonium metal crystals were produced. The first few zone refining passes were more effective than each later pass because an oxide layer formed on the rod surface. There was no clear evidence of better impurity movement at the slower zone refining speed. Also, constant or variable coil power appeared to have no effect on impurity movement during a single run (10 passes). This experiment was the first step to developing a zone refining process for plutonium metal.

  18. 3, 335364, 2006 Hyporheic zone

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    HESSD 3, 335­364, 2006 Hyporheic zone dynamics E. Hoehn and O. A. Cirpka Title Page Abstract dynamics in two alluvial flood plains of the Southern Alps using water temperature and tracers E. Hoehn: E. Hoehn (hoehn@eawag.ch) 335 #12;HESSD 3, 335­364, 2006 Hyporheic zone dynamics E. Hoehn and O. A

  19. Status report: A hydrologic framework for the Oak Ridge Reservation

    SciTech Connect (OSTI)

    Solomon, D.K.; Toran, L.E.; Dreier, R.B. [Oak Ridge National Lab., TN (United States); Moore, G.K.; McMaster, W.M. [Tennessee Univ., Knoxville, TN (United States). Dept. of Civil Engineering

    1992-05-01T23:59:59.000Z

    This first status report on the Hydrologic Studies Task of the Oak Ridge Reservation Hydrology and Geology Study (ORRHAGS) revises earlier concepts of subsurface hydrology and hydrogeochemistry of the ORR. A new classification of hydrogeologic units is given, as well as new interpretations of the gydrogeologic properties and processes that influence contaminant migration. The conceptual hydrologic framework introduced in this report is based primarily on reinterpretations of data acquired during earlier hydrologic investigations of waste areas at and near the three US Department of Energy Oak Ridge (DOE-OR) plant facilities. In addition to describing and interpreting the properties and processes of the groundwater systems as they are presently understood, this report describes surface water-subsurface water relations, influences on contaminant migration,and implications to environmental restoration, environmental monitoring, and waste management.

  20. Fault Tolerant Control using Cartesian Genetic Programming

    E-Print Network [OSTI]

    Fernandez, Thomas

    Fault Tolerant Control using Cartesian Genetic Programming Yoshikazu Hirayama University of York]: Robotics-- Sensors; F.2.2 [Analysis of Algorithms and Problem Complexity]: Nonnumerical Algorithms and Problems General Terms Algorithms, Reliability Keywords cartesian genetic programming, evolutionary

  1. Microscopic feather fractures in the faulting process

    E-Print Network [OSTI]

    Conrad, Robert Eugene

    1974-01-01T23:59:59.000Z

    . Naximum compressive stress trajectories in a photoelastic model are shown by solid lines. Short lines are drawn on isoclinics in crossed polarized light at 10' intervals of rotation. Load axis is N-S. stress (o'I) trajectories curve near the fault..., maximum compressive stress, trajectories to a two dimensional during sliding along (dashed lines) in a cylindrical specimen reduced elastic problem. (b) Expected ol trajectories a fault. crack by shear along the crack surfaces (Bieniawski, 1967...

  2. Geology, hydrology, chemistry, and microbiology of the in situ bioremediation demonstration site

    SciTech Connect (OSTI)

    Newcomer, D.R.; Doremus, L.A.; Hall, S.H.; Truex, M.J.; Vermeul, V.R.; Engelman, R.E.

    1995-03-01T23:59:59.000Z

    This report summarizes characterization information on the geology, hydrology, microbiology, contaminant distribution, and ground-water chemistry to support demonstration of in situ bioremediation at the Hanford Site. The purpose of this information is to provide baseline conditions, including a conceptual model of the aquifer being utilized for in situ bioremediation. Data were collected from sampling and other characterization activities associated with three wells drilled in the upper part of the suprabasalt aquifer. Results of point-dilution tracer tests, conducted in the upper 9 m (30 ft) of the aquifer, showed that most ground-water flow occurs in the upper part of this zone, which is consistent with hydraulic test results and geologic and geophysical data. Other tracer test results indicated that natural ground-water flow velocity is equal to or less than about 0.03 m/d (0.1 ft/d). Laboratory hydraulic conductivity measurements, which represent the local distribution of vertical hydraulic conductivity, varied up to three orders of magnitude. Based on concentration data from both the vadose and saturated zone, it is suggested that most, if not all, of the carbon tetrachloride detected is representative of the aqueous phase. Concentrations of carbon tetrachloride, associated with a contaminant plume in the 200-West Area, ranged from approximately 500 to 3,800 {mu}g/L in the aqueous phase and from approximately 10 to 290 {mu}g/L in the solid phase at the demonstration site. Carbon tetrachloride gas was detected in the vadose zone, suggesting volatilization and subsequent upward migration from the saturated zone.

  3. Fault Detection and Load Distribution for the Wind Farm Challenge

    SciTech Connect (OSTI)

    Borchehrsen, Anders B.; Larsen, Jesper A.; Stoustrup, Jakob

    2014-08-24T23:59:59.000Z

    In this paper a fault detection system and a fault tolerant controller for a wind farm model. The wind farm model used is the one proposed as a public challenge. In the model three types of faults are introduced to a wind farm consisting of nine turbines. A fault detection system designed, by taking advantage of the fact that within a wind farm several wind turbines will be operating under all most identical conditions. The turbines are then grouped, and then turbines within each group are used to generate residuals for turbines in the group. The generated residuals are then evaluated using dynamical cumulative sum. The designed fault detection system is cable of detecting all three fault types occurring in the model. But there is room for improving the fault detection in some areas. To take advantage of the fault detection system a fault tolerant controller for the wind farm has been designed. The fault tolerant controller is a dispatch controller which is estimating the possible power at each individual turbine and then setting the reference accordingly. The fault tolerant controller has been compared to a reference controller. And the comparison shows that the fault tolerant controller performance better in all measures. The fault detection and a fault tolerant controller has been designed, and based on the simulated results the overall performance of the wind farm is improved on all measures. Thereby this is a step towards improving the overall performance of current and future wind farms.

  4. Fault-tolerant Sensor Network based on Fault Evaluation Matrix and Compensation for Intermittent Observation

    E-Print Network [OSTI]

    Fault-tolerant Sensor Network based on Fault Evaluation Matrix and Compensation for Intermittent-tolerant sensor network configuration problem for a target navigation. A sensor network system consists of many sensor nodes and its network connections. Each sensor node can exchange information by wireless

  5. Measuring and Modeling Fault Density for Plume-Fault Encounter Probability Estimation

    SciTech Connect (OSTI)

    Jordan, P.D.; Oldenburg, C.M.; Nicot, J.-P.

    2011-05-15T23:59:59.000Z

    Emission of carbon dioxide from fossil-fueled power generation stations contributes to global climate change. Storage of this carbon dioxide within the pores of geologic strata (geologic carbon storage) is one approach to mitigating the climate change that would otherwise occur. The large storage volume needed for this mitigation requires injection into brine-filled pore space in reservoir strata overlain by cap rocks. One of the main concerns of storage in such rocks is leakage via faults. In the early stages of site selection, site-specific fault coverages are often not available. This necessitates a method for using available fault data to develop an estimate of the likelihood of injected carbon dioxide encountering and migrating up a fault, primarily due to buoyancy. Fault population statistics provide one of the main inputs to calculate the encounter probability. Previous fault population statistics work is shown to be applicable to areal fault density statistics. This result is applied to a case study in the southern portion of the San Joaquin Basin with the result that the probability of a carbon dioxide plume from a previously planned injection had a 3% chance of encountering a fully seal offsetting fault.

  6. Sandia National Laboratories: critical marginal ice zone

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

    marginal ice zone NASA Award for Marginal Ice Zone Observations and Process Experiment (MIZOPEX) On February 24, 2015, in Analysis, Climate, Modeling & Analysis, Monitoring, News,...

  7. Abstracts and parameter index database for reports pertaining to the unsaturated zone and surface water-ground water interactions at the Idaho National Engineering Laboratory

    SciTech Connect (OSTI)

    Bloomsburg, G.; Finnie, J.; Horn, D.; King, B.; Liou, J. [Idaho Univ., Moscow, ID (United States)

    1993-05-01T23:59:59.000Z

    This report is a product generated by faculty at the University of Idaho in support of research and development projects on Unsaturated Zone Contamination and Transport Processes, and on Surface Water-Groundwater Interactions and Regional Groundwater Flow at the Idaho National Engineering Laboratory. These projects are managed by the State of Idaho`s INEL Oversight Program under a grant from the US Department of Energy. In particular, this report meets project objectives to produce a site-wide summary of hydrological information based on a literature search and review of field, laboratory and modeling studies at INEL, including a cross-referenced index to site-specific physical, chemical, mineralogic, geologic and hydrologic parameters determined from these studies. This report includes abstracts of 149 reports with hydrological information. For reports which focus on hydrological issues, the abstracts are taken directly from those reports; for reports dealing with a variety of issues beside hydrology, the abstracts were generated by the University of Idaho authors concentrating on hydrology-related issues. Each abstract is followed by a ``Data`` section which identifies types of technical information included in a given report, such as information on parameters or chemistry, mineralogy, stream flows, water levels. The ``Data`` section does not include actual values or data.

  8. Fault Locating, Prediction and Protection (FLPPS)

    SciTech Connect (OSTI)

    Yinger, Robert, J.; Venkata, S., S.; Centeno, Virgilio

    2010-09-30T23:59:59.000Z

    One of the main objectives of this DOE-sponsored project was to reduce customer outage time. Fault location, prediction, and protection are the most important aspects of fault management for the reduction of outage time. In the past most of the research and development on power system faults in these areas has focused on transmission systems, and it is not until recently with deregulation and competition that research on power system faults has begun to focus on the unique aspects of distribution systems. This project was planned with three Phases, approximately one year per phase. The first phase of the project involved an assessment of the state-of-the-art in fault location, prediction, and detection as well as the design, lab testing, and field installation of the advanced protection system on the SCE Circuit of the Future located north of San Bernardino, CA. The new feeder automation scheme, with vacuum fault interrupters, will limit the number of customers affected by the fault. Depending on the fault location, the substation breaker might not even trip. Through the use of fast communications (fiber) the fault locations can be determined and the proper fault interrupting switches opened automatically. With knowledge of circuit loadings at the time of the fault, ties to other circuits can be closed automatically to restore all customers except the faulted section. This new automation scheme limits outage time and increases reliability for customers. The second phase of the project involved the selection, modeling, testing and installation of a fault current limiter on the Circuit of the Future. While this project did not pay for the installation and testing of the fault current limiter, it did perform the evaluation of the fault current limiter and its impacts on the protection system of the Circuit of the Future. After investigation of several fault current limiters, the Zenergy superconducting, saturable core fault current limiter was selected for installation. Because of some testing problems with the Zenergy fault current limiter, installation was delayed until early 2009 with it being put into operation on March 6, 2009. A malfunction of the FCL controller caused the DC power supply to the superconducting magnet to be turned off. This inserted the FCL impedance into the circuit while it was in normal operation causing a voltage resonance condition. While these voltages never reached a point where damage would occur on customer equipment, steps were taken to insure this would not happen again. The FCL was reenergized with load on December 18, 2009. A fault was experienced on the circuit with the FCL in operation on January 14, 2010. The FCL operated properly and reduced the fault current by about 8%, what was expected from tests and modeling. As of the end of the project, the FCL was still in operation on the circuit. The third phase of the project involved the exploration of several advanced protection ideas that might be at a state where they could be applied to the Circuit of the Future and elsewhere in the SCE electrical system. Based on the work done as part of the literature review and survey, as well as a number of internal meetings with engineering staff at SCE, a number of ideas were compiled. These ideas were then evaluated for applicability and ability to be applied on the Circuit of the Future in the time remaining for the project. Some of these basic ideas were implemented on the circuit including measurement of power quality before and after the FCL. It was also decided that we would take what was learned as part of the Circuit of the Future work and extend it to the next generation circuit protection for SCE. Also at this time, SCE put in a proposal to the DOE for the Irvine Smart Grid Demonstration using ARRA funding. SCE was successful in obtaining funding for this proposal, so it was felt that exploration of new protection schemes for this Irvine Smart Grid Demonstration would be a good use of the project resources. With this in mind, a protection system that uses fault interrupting switches, hi

  9. Yoram Rubin notes made at the Hydrology Section Award Ceremony, December 2005, San Francisco

    E-Print Network [OSTI]

    Rubin, Yoram

    Yoram Rubin notes made at the Hydrology Section Award Ceremony, December 2005, San Francisco Dear Hydrology Section president Rafael Bras and President-elect George Hornberger, members of the hydrology of the breadth of possibilities that hydrology represents overall. Hence, I was grateful to be reminded, during

  10. Course offer (1/2) Hydrology II (1st Sem. MSc)

    E-Print Network [OSTI]

    Giger, Christine

    1 Course offer (1/2) · Hydrology II (1st Sem. MSc) · advanced engineering hydrology course focused on hydrological monitoring, processunderstanding and new analysis and modelling techniques · Fluvial Systems (1st management and riverine ecosystem sustainability · Hydrology of Glaciers (2nd Sem. MSc) · study of ice

  11. Position: Urban Natural Resource Specialist Forest Hydrology Closing Date: January 9th, 2015

    E-Print Network [OSTI]

    Isaacs, Rufus

    Position: Urban Natural Resource Specialist ­ Forest Hydrology Closing Date: January 9th, 2015 runoff. This position requires applied, working knowledge of forest hydrology, hydrology modelling to support the use of i-Tree-related hydrologic models and tools. Develop framework for i-Tree Hydro

  12. Faulted joints: kinematics, displacementlength scaling relations and criteria for their identication

    E-Print Network [OSTI]

    Engelder, Terry

    and kinematics based on two sets of joints, pinnate joints and fault striations, reveal that some mesoscale faults (i.e., faults without linked fault segments) at the mesoscale: Şneoformed faultsş which form

  13. Robust Condition Monitoring and Fault Diagnosis of Variable Speed Induction Motor Drives

    E-Print Network [OSTI]

    Choi, Seungdeog

    2012-02-14T23:59:59.000Z

    The main types of faults studied in the literature are commonly categorized as electrical faults and mechanical faults. In addition to well known faults, the performance of a diagnostic algorithm and its operational reliability in harsh environments...

  14. A Hybrid Model Based and Statistical Fault Diagnosis System for Industrial Process

    E-Print Network [OSTI]

    Lin, Chen-Han

    2014-11-21T23:59:59.000Z

    This thesis presents a hybrid model based and statistical fault diagnosis system, which applied on the nonlinear three-tank model. The purpose of fault diagnosis is generating and analyzing the residual to find out the fault occurrence. This fault...

  15. Sensitivity of Surface Flux Simulations to Hydrologic Parameters Based on an Uncertainty Quantification Framework Applied to the Community Land Model

    SciTech Connect (OSTI)

    Hou, Zhangshuan; Huang, Maoyi; Leung, Lai-Yung R.; Lin, Guang; Ricciuto, Daniel M.

    2012-08-10T23:59:59.000Z

    Uncertainties in hydrologic parameters could have significant impacts on the simulated water and energy fluxes and land surface states, which will in turn affect atmospheric processes and the carbon cycle. Quantifying such uncertainties is an important step toward better understanding and quantification of uncertainty of integrated earth system models. In this paper, we introduce an uncertainty quantification (UQ) framework to analyze sensitivity of simulated surface fluxes to selected hydrologic parameters in the Community Land Model (CLM4) through forward modeling. Thirteen flux tower footprints spanning a wide range of climate and site conditions were selected to perform sensitivity analyses by perturbing the parameters identified. In the UQ framework, prior information about the parameters was used to quantify the input uncertainty using the Minimum-Relative-Entropy approach. The quasi-Monte Carlo approach was applied to generate samples of parameters on the basis of the prior pdfs. Simulations corresponding to sampled parameter sets were used to generate response curves and response surfaces and statistical tests were used to rank the significance of the parameters for output responses including latent (LH) and sensible heat (SH) fluxes. Overall, the CLM4 simulated LH and SH show the largest sensitivity to subsurface runoff generation parameters. However, study sites with deep root vegetation are also affected by surface runoff parameters, while sites with shallow root zones are also sensitive to the vadose zone soil water parameters. Generally, sites with finer soil texture and shallower rooting systems tend to have larger sensitivity of outputs to the parameters. Our results suggest the necessity of and possible ways for parameter inversion/calibration using available measurements of latent/sensible heat fluxes to obtain the optimal parameter set for CLM4. This study also provided guidance on reduction of parameter set dimensionality and parameter calibration framework design for CLM4 and other land surface models under different hydrologic and climatic regimes.

  16. FRACTURE MODELING AND FAULT ZONE CHARACTERISTICS APPLIED TO RESERVOIR CHARACTERIZATION OF THE RULISON GAS FIELD,

    E-Print Network [OSTI]

    that incorporates geologic well data, three dimensional seismic data, geomechanical analysis, and well production been calculated based on available well data. Incorporation of geomechanical stresses allows the known geomechanical properties of the reservoir interval. Ultimately, this model highlights

  17. Geomechanical effects on CO2 leakage through fault zones during large-scale underground injection

    E-Print Network [OSTI]

    Rinaldi, A.P.

    2014-01-01T23:59:59.000Z

    Rutqvist, J. , 2012. The Geomechanics of CO 2 Storage in2001. Fully coupled geomechanics and fluid-flow analysis ofUS Rock Mechanics, Geomechanics Symposium. San Francisco, 23

  18. Trapping capacity of fault zones, downdip Yegua Formation, Texas Gulf Coast basin

    E-Print Network [OSTI]

    Hintz, Jena Christine

    2001-01-01T23:59:59.000Z

    , Pittman's method gave the most reliable results for predicting capillary pressure and therefore the height of the oil column. However, all methods for predicting capillary pressure worked well for samples with porosities above 20% and permeabilities above...

  19. Visualization of microcrack anisotropy in granite affected by a fault zone, using confocal laser scanning microscope

    E-Print Network [OSTI]

    Onishi, Celia T.; Shimizu, Ichiko

    2004-01-01T23:59:59.000Z

    1996. Permeability in anisotropic granite under hydrostaticP. , 1995. Microfractography of granite rocks under confocalIllinois UHP3 drillhole granite and a comparison with other

  20. Structure and tectonics of the Sumatra Fault Zone-Sundra Trench junction

    E-Print Network [OSTI]

    Handayani, Lina

    1999-01-01T23:59:59.000Z

    been compiled. These data consist of topography, free-air gravity, seismic refection profiles, and seismicity. Gravity analysis and modeling reveals that the Sunda Strait forearm region lacks accretionary prism development and instead consists of lower...

  1. Modeling fault-zone guided waves of microearthquakes in a geothermal...

    Open Energy Info (EERE)

    fields. Authors Lou, M.; Rial, J.A. ; Malin and P.E. Published Journal Geophysics, 711997 DOI Not Provided Check for DOI availability: http:crossref.org Citation Lou, M.;...

  2. Locating an active fault zone in Coso geothermal field by analyzing seismic

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf KilaueaInformation Other AlternativePark,CedarPower Inc Jump

  3. Modeling fault-zone guided waves of microearthquakes in a geothermal

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRose BendMiasole IncMinuteman WindMoana Geothermal AreaImpacts

  4. Stepover or Relay Ramp in Normal Fault Zones | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt LtdShawangunk,SoutheastSt.Steep Gradient Flume JumpTexas:Information

  5. Thermal Waters Along The Konocti Bay Fault Zone, Lake County, California- A

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries PvtStratosolarTharaldson Ethanol LLCEnergy InformationOpen

  6. Pull-Apart in Strike-Slip Fault Zone | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I GeothermalPotentialBiopowerSolidGenerationMethod Jump to:ThisPublic PowerKentucky: Energy

  7. Applications of Climatology and Meteorology to Hydrologic Simulation

    E-Print Network [OSTI]

    Clark, R. A.; O'Connor, G. E.

    TR-38 1971 Applications of Climatology and Meteorology to Hydrologic Simulation R.A. Clark G.E. O?Connor Texas Water Resources Institute Texas A&M University ...

  8. active layer hydrology: Topics by E-print Network

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

    (SFHS) is a non information, contact: - Neil JohnsonMWH - Jayantha ObeysekeraSFWMD - Mike SukopFIU - Chris PetersCH2M HILL Sukop, Mike 199 Eco-hydrological controls on...

  9. Transcending the Hydro-Illogical Building a Texas Hydrologic

    E-Print Network [OSTI]

    Yang, Zong-Liang

    Transcending the Hydro-Illogical Cycle Building a Texas Hydrologic Information System TX-HIS #12;Q to couple streamflow models to GCMs · We need to break the hydro-illogical cycle and plan for the delivery

  10. Hydrology and Glaciers in the Upper Indus Basin

    E-Print Network [OSTI]

    Yu, Winston

    Examines the state of the science associated with the snow and ice hydrology in the Upper Indus Basin (IUB), reviewing the literature and data available on the present and projected role of glaciers, snow fields, and stream ...

  11. Review of soil water models with respect to savanna hydrology 

    E-Print Network [OSTI]

    Derry, Julian F; Russell, Graham; Liedloff, Adam C

    2006-07-21T23:59:59.000Z

    Effective management leading towards sustainable rangeland production in arid and semi-arid regions will stem from effective soil water management and comprehension of the hydrological properties of the soil in relation to pastoralism. However...

  12. Hydrology of a land-terminating Greenlandic outlet glacier 

    E-Print Network [OSTI]

    Cowton, Thomas Ralph

    2013-11-28T23:59:59.000Z

    Hydrology is recognised as an important component of the glacial system in alpine environments. In particular, the subglacial drainage of surface meltwaters is known to exert a strong influence on the motion of glaciers ...

  13. Modelling the hydrology of the Greenland ice sheet 

    E-Print Network [OSTI]

    Karatay, Mehmet Rahmi

    2011-06-28T23:59:59.000Z

    This thesis aims to better understand the relationships between basal water pressure, friction, and sliding mechanisms at ice sheet scales. In particular, it develops a new subglacial hydrology model (Hydro) to explicitly ...

  14. CE 372 Engineering Hydrology and Hydraulics Learning objectives

    E-Print Network [OSTI]

    Rehmann, Chris

    time of concentration in two ways. Compute time of concentration using the kinematic-wave, Kerby for exams. 1. Identify and explain processes in the hydrologic cycle. Carry out a water balance. 2. Define

  15. Synthesis and evaluation of fault-tolerant quantum computer architectures

    E-Print Network [OSTI]

    Cross, Andrew W. (Andrew William), 1979-

    2005-01-01T23:59:59.000Z

    Fault-tolerance is the cornerstone of practical, large-scale quantum computing, pushed into its prominent position with heroic theoretical efforts. The fault-tolerance threshold, which is the component failure probability ...

  16. FEATURE BASED HANDLING OF SURFACE FAULTS IN COMPACT DISC PLAYERS

    E-Print Network [OSTI]

    Wickerhauser, M. Victor

    two photo detectors. The distances are the distance from the actual position of the OPU such surface faults. The core idea is not to rely on sensor information during the fault. The sensor signals

  17. Observations on the capability of the Criner fault, southern Oklahoma

    E-Print Network [OSTI]

    Williamson, Shawn Collin

    1996-01-01T23:59:59.000Z

    of the present study suggest that the Criner fault is an old tectonic feature with a deceptively youthful geomorphic appearance. Differential erosion has likely exhumed the Criner fault-line scarp in the resistant Ordovician limestone of the Criner Hills...

  18. Design and analysis of a fault tolerant network processor

    E-Print Network [OSTI]

    Desai, Shaishav A

    1998-01-01T23:59:59.000Z

    This thesis investigates the effect of transient faults on a processor and proposes on-chip fault tolerant design techniques to improve its reliability. The target processor is a general 32-bit, four stage pipeline, dual context RISC style design...

  19. Frictional properties of faults: from observation on the

    E-Print Network [OSTI]

    Winfree, Erik

    Frictional properties of faults: from observation on the Longitudinal Valley Fault, Taiwan myself lucky to do what I love and to wake up every day, happy and excited about the day to come

  20. East-west faults due to planetary contraction

    E-Print Network [OSTI]

    Beuthe, Mikael

    2010-01-01T23:59:59.000Z

    Contraction, expansion and despinning have been common in the past evolution of Solar System bodies. These processes deform the lithosphere until it breaks along faults. The type and orientation of faults are usually determined under the assumption of a constant lithospheric thickness, but lithospheric thinning can occur at the equator or at the poles due either to latitudinal variation in solar insolation or to localized tidal dissipation. Using thin elastic shells with variable thickness, I show that the equatorial thinning of the lithosphere transforms the homogeneous and isotropic fault pattern caused by contraction/expansion into a pattern of faults striking east-west, preferably formed in the equatorial region. By contrast, lithospheric thickness variations only weakly affect the despinning faulting pattern consisting of equatorial strike-slip faults and polar normal faults. If contraction is added to despinning, the despinning pattern first shifts to thrust faults striking north-south and then to thrus...

  1. New approach to the fault location problem using synchronized sampling

    E-Print Network [OSTI]

    Mrkic, Jasna

    1994-01-01T23:59:59.000Z

    This thesis presents a new approach to solving the problem of fault location on a transmission line using synchronized data from both ends of the line. The synchronized phase voltage and current samples taken during the fault transient are used...

  2. VCSEL fault location apparatus and method

    DOE Patents [OSTI]

    Keeler, Gordon A. (Albuquerque, NM); Serkland, Darwin K. (Albuquerque, NM)

    2007-05-15T23:59:59.000Z

    An apparatus for locating a fault within an optical fiber is disclosed. The apparatus, which can be formed as a part of a fiber-optic transmitter or as a stand-alone instrument, utilizes a vertical-cavity surface-emitting laser (VCSEL) to generate a test pulse of light which is coupled into an optical fiber under test. The VCSEL is subsequently reconfigured by changing a bias voltage thereto and is used as a resonant-cavity photodetector (RCPD) to detect a portion of the test light pulse which is reflected or scattered from any fault within the optical fiber. A time interval .DELTA.t between an instant in time when the test light pulse is generated and the time the reflected or scattered portion is detected can then be used to determine the location of the fault within the optical fiber.

  3. Streamflow forecasting for large-scale hydrologic systems

    E-Print Network [OSTI]

    Awwad, Haitham Munir

    1991-01-01T23:59:59.000Z

    STREAMFLOW FORECASTING FOR LARGE-SCALE HYDROLOGIC SYSTEMS A Thesis by HAITHAM MUNIR AWWAD Submitted to the Office of Graduate Studies of Texas AkM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May... 1991 Major Subject: Civil Engineering STREAMFLOW FORECASTING FOR LARGE-SCALE HYDROLOGIC SYSTEMS A Thesis by HAITHAM MUNIR AWWAD Approved as to style and content by: uan B. Valdes (Chair of Committee) alph A. Wurbs (Member) Marshall J. Mc...

  4. Kirchhoff integrals and Fresnel zones Ludek Klimes

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    Kirchhoff integrals and Fresnel zones LudŸek KlimeŸs Department of Geophysics, Charles University of discrete values necessary for the numerical quadra­ ture. The Fresnel zones are then derived as the minimum of Fresnel zones is purely local, independent of the reference travel times. The definition of Fresnel zones

  5. Experimental characterization of faults on low-voltage systems

    E-Print Network [OSTI]

    Ahmed, Jubayer

    1992-01-01T23:59:59.000Z

    was to simulate a con- trolled arcing fault. Hence, the arcgap was maintained constant for a particular test. A tungsten welding rod was used as the electrode because it does not melt easily. This test was performed on a. single-phase system with 240 volts... better understanding of the problem. These arcing faults and high impedance and incipient faults constitute the previously mentioned low-current faults. Journal model is IEEE Transactions on Power Delivery. Although these problems have been...

  6. Fault seal analysis of Okan and Meren fields, Nigeria

    SciTech Connect (OSTI)

    Eisenberg, R.A. [Chevron Petroleum Technology Co., La Habra, CA (United States); Brenneman, R.J. [Chevron Overseas Petroleum Co., San Ramon, CA (United States); Adeogba, A.A. [Chevron Nigeria Ltd., Lagos (Nigeria)

    1995-08-01T23:59:59.000Z

    The sealing capacity and the dynamic seal behavior of faults between juxtaposed reservoirs were analyzed for Okan and Meren fields, offshore Nigeria. In both fields correlations were found between reservoir performance, juxtaposed fluid types, oil geochemistry, interpreted fluid contact relationships, fault sealing/leaking condition, and calculated smear gouge ratios. Integration of these data has been invaluable in quantifying fault seal risk and may effect depletion strategies for fault-juxtaposed reservoirs within these fields. Fault plane sections defined reservoir juxtapositions and aided visualization of potential cross-fault spill points. Smear gouge ratios calculated from E-logs were used to estimate the composition of fault-gouge materials between the juxtaposed reservoirs. These tools augmented interpretation of seal/nonseal character based on fluid contact relationships in proved reservoirs and, in addition, were used to quantify fault seal risk of untested fault-dependent closures in Okan. The results of these analyses were then used to interpret production-induced fault seal breakdown within the G-sands and also to risk seal integrity of fault dependent closures within the untested O-sands in an adjacent, upthrown fault block. Within this fault block the presence of potential fault intersection leak points and large areas of sand/sand juxtaposition with high smear gouge ratios (low sealing potential) limits potential reserves within the O-sand package. In Meren Field the E- and G-sands are juxtaposed, on different pressure decline, geochemically distinct, and are characterized by low smear gouge ratios. In contrast, specific G- and H-sands, juxtaposed across the same fault, contain similar OOWCs and are characterized by high smear gouge ratios. The cross-sealing and/or cross-leaking nature of compartment boundaries at Meren is related to fault displacement variation and the composition of displaced stratigraphy.

  7. Detachment Faulting & Geothermal Resources- Pearl Hot Spring, NV

    Broader source: Energy.gov [DOE]

    Detachment Faulting & Geothermal Resources - Pearl Hot Spring, NV presentation at the April 2013 peer review meeting held in Denver, Colorado.

  8. Photovoltaic ground fault and blind spot electrical simulations.

    SciTech Connect (OSTI)

    Flicker, Jack David; Johnson, Jay

    2013-06-01T23:59:59.000Z

    Ground faults in photovoltaic (PV) systems pose a fire and shock hazard. To mitigate these risks, AC-isolated, DC grounded PV systems in the United States use Ground Fault Protection Devices (GFPDs), e.g., fuses, to de-energize the PV system when there is a ground fault. Recently the effectiveness of these protection devices has come under question because multiple fires have started when ground faults went undetected. In order to understand the limitations of fuse-based ground fault protection in PV systems, analytical and numerical simulations of different ground faults were performed. The numerical simulations were conducted with Simulation Program with Integrated Circuit Emphasis (SPICE) using a circuit model of the PV system which included the modules, wiring, switchgear, grounded or ungrounded components, and the inverter. The derivation of the SPICE model and the results of parametric fault current studies are provided with varying array topologies, fuse sizes, and fault impedances. Closed-form analytical approximations for GFPD currents from faults to the grounded current carrying conductor-known as %E2%80%9Cblind spot%E2%80%9D ground faults-are derived to provide greater understanding of the influence of array impedances on fault currents. The behavior of the array during various ground faults is studied for a range of ground fault fuse sizes to determine if reducing the size of the fuse improves ground fault detection sensitivity. The results of the simulations show that reducing the amperage rating of the protective fuse does increase fault current detection sensitivity without increasing the likelihood of nuisance trips to a degree. Unfortunately, this benefit reaches a limit as fuses become smaller and their internal resistance increases to the point of becoming a major element in the fault current circuit.

  9. Understanding Fault Characteristics of Inverter-Based Distributed Energy Resources

    SciTech Connect (OSTI)

    Keller, J.; Kroposki, B.

    2010-01-01T23:59:59.000Z

    This report discusses issues and provides solutions for dealing with fault current contributions from inverter-based distributed energy resources.

  10. UNSUPERVISED CLUSTERING FOR FAULT DIAGNOSIS IN NUCLEAR POWER PLANT COMPONENTS

    E-Print Network [OSTI]

    Boyer, Edmond

    1 UNSUPERVISED CLUSTERING FOR FAULT DIAGNOSIS IN NUCLEAR POWER PLANT COMPONENTS Piero Baraldi1 of prototypical behaviors. Its performance is tested with respect to an artificial case study and then applied on transients originated by different faults in the pressurizer of a nuclear power reactor. Key Words: Fault

  11. On Distributed Fault-Tolerant Detection in Wireless Sensor Networks

    E-Print Network [OSTI]

    Huang, Yinlun

    On Distributed Fault-Tolerant Detection in Wireless Sensor Networks Xuanwen Luo, Student Member problems for distributed fault-tolerant detection in wireless sensor networks: 1) how to address both it possible to perform energy- efficient fault-tolerant detection in a wireless sensor network. Index Terms

  12. Outlier Detection Rules for Fault Detection in Solar Photovoltaic Arrays

    E-Print Network [OSTI]

    Lehman, Brad

    , MPPT of the PV inverters, high fault impedance, or degradation of solar cells [1]. Without proper fault Abstract-- Solar photovoltaic (PV) arrays are unique power sources that may have uncleared fault current when utilizing conventional overcurrent protection devices. To monitor the PV operation and detect

  13. A Parametric Spectral Estimator for Faults Detection in Induction Machines

    E-Print Network [OSTI]

    Boyer, Edmond

    since their frequency resolution is limited and additional post-processing algorithms are required of bearing faults. Index Terms--Induction machine, faults detection, bearing faults, stator current that avoids the use of extra sensors since the stator currents are usually available and inexpensive

  14. RIS-M-2311 AUTOMATIC FAULT TREE CONSTRUCTION WITH RIKKE

    E-Print Network [OSTI]

    RISŘ-M-2311 AUTOMATIC FAULT TREE CONSTRUCTION WITH RIKKE A COMPENDIUM OF EXAMPLES, VOLUME I BASIC MODELS J.R. Taylor Abstract. Examples of automatically constructed fault trees are given. In this first are intended to illustrate the prin- ciples of fault tree construction using the RIKKE failure analysis system

  15. Ris-M-2311 AUTOMATIC FAULT TREE CONSTRUCTION WITH RIKKE

    E-Print Network [OSTI]

    Risř-M-2311 Vol. 2 AUTOMATIC FAULT TREE CONSTRUCTION WITH RIKKE A COMPENDIUM OF EXAMPLES. VOLUME 2. CONTROL AND SAFETY LOOPS. J.R. Taylor Abstract. This second volume describes the construction of fault In this volume, examples of HIKKE fault tree construction including loops are given. The principles involved were

  16. Statistical estimation of multiple faults in aircraft gas turbine engines

    E-Print Network [OSTI]

    Ray, Asok

    415 Statistical estimation of multiple faults in aircraft gas turbine engines S Sarkar, C Rao of multiple faults in aircraft gas-turbine engines, based on a statistical pattern recognition tool called commercial aircraft engine. Keywords: aircraft propulsion, gas turbine engines, multiple fault estimation

  17. Identifying Security Fault Reports via Text Mining Michael Gegick, 2

    E-Print Network [OSTI]

    Young, R. Michael

    Identifying Security Fault Reports via Text Mining 1 Michael Gegick, 2 Pete Rotella, 1 Tao Xie 1 contains fault reports (FRs) collected from various sources such as development teams, test teams, and end-users. Software or security engineers manually analyze the FRs to label the subset of FRs that are security fault

  18. Diverse neural net solutions to a fault diagnosis problem \\Lambda

    E-Print Network [OSTI]

    Sharkey, Amanda

    Abstract The development of a neural net system for fault diagnosis in a mar­ ine diesel engine system solution to a problem of fault diagnosis in a four­stroke marine diesel engine; that of early to recognise faults in simulated data from a diesel engine; specifically to classify combustion condition

  19. The relation of physical attributes of the Plynlimon catchments to variations in hydrology and water status Hydrology and Earth System Sciences, 8(3), 345354 (2004) EGU

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The relation of physical attributes of the Plynlimon catchments to variations in hydrology and water status 345 Hydrology and Earth System Sciences, 8(3), 345354 (2004) © EGU Anatomy of a catchment: the relation of physical attributes of the Plynlimon catchments to variations in hydrology and water status C

  20. Scale effects on the hydrological impact of upland afforestation and drainage using indices of flow variability Hydrology and Earth System Sciences, 7(3), 325338 (2003) EGU

    E-Print Network [OSTI]

    Boyer, Edmond

    Scale effects on the hydrological impact of upland afforestation and drainage using indices of flow variability 325 Hydrology and Earth System Sciences, 7(3), 325338 (2003) © EGU Scale effects on the hydrological impact of upland afforestation and drainage using indices of flow variability: the River Irthing

  1. Towards understanding tree root profiles: simulating hydrologically optimal strategies for root distribution Hydrology and Earth System Sciences, 5(4), 629644 (2001) EGS

    E-Print Network [OSTI]

    Boyer, Edmond

    Towards understanding tree root profiles: simulating hydrologically optimal strategies for root distribution 629 Hydrology and Earth System Sciences, 5(4), 629­644 (2001) © EGS Towards understanding tree root profiles: simulating hydrologically optimal strategies for root distribution M.T. van Wijk and W

  2. Raindrop size distributions and radar reflectivity-rain rate relationships for radar hydrology Hydrology and Earth System Sciences, 5(4), 615627 (2001) EGS

    E-Print Network [OSTI]

    Boyer, Edmond

    Raindrop size distributions and radar reflectivity-rain rate relationships for radar hydrology 615 Hydrology and Earth System Sciences, 5(4), 615­627 (2001) © EGS Raindrop size distributions and radar reflectivity­rain rate relationships for radar hydrology* Remko Uijlenhoet1 Sub-department Water Resources

  3. Over-parameterisation,a major obstacle to the use of artificial neural networks in hydrology ? Hydrology and Earth System Sciences, 7(5), 693706 (2003) EGU

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2003-01-01T23:59:59.000Z

    Over-parameterisation,a major obstacle to the use of artificial neural networks in hydrology ? 693 Hydrology and Earth System Sciences, 7(5), 693706 (2003) © EGU Over-parameterisation, a major obstacle to the use of artificial neural networks in hydrology ? Eric Gaume and Raphael Gosset Ecole Nationale des

  4. Technical Report TR-011 March 2000 Research Section, Vancouver Forest Region, BCMOF Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife TR-011 Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife #12;Technical ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife Page Summary

  5. A Tidal Hydrology Assessment for Reconnecting Spring Branch Creek to Suisun Marsh, Solano County CA: Predicting the Impact to the Federally Listed Plant Soft Bird's Beak

    E-Print Network [OSTI]

    Olson, Jessica J.

    2011-01-01T23:59:59.000Z

    this study. Changes in hydrology are not the only potentialA Tidal Hydrology Assessment for Reconnecting Spring Branchmay change the tidal hydrology and impact the area occupied

  6. An algorithm for faulted phase and feeder selection under high impedance fault conditions 

    E-Print Network [OSTI]

    Benner, Carl Lee

    1988-01-01T23:59:59.000Z

    . One method based on increases in third and fifth harmonic symmetrical current components under high impedance fault conditions has been proposed by Balser et. Journal model is IEEE Transactions on Power Delivery. al, of Power Technologies Inc [1...

  7. Realistic fault modeling and quality test generation of combined delay faults

    E-Print Network [OSTI]

    Thadhlani, Ajaykumar A

    2001-01-01T23:59:59.000Z

    coupled lines. To cope up with these realistic testing problems, it is necessary to model the circuit defects by considering the capacitively coupling between lines. This needs a better fault model which can incorporate the local defects (such...

  8. Preliminary results from an isotope hydrology study of the Kilauea...

    Open Energy Info (EERE)

    system, partly isolating the groundwater in the area bounded by the rift zones and the Pacific Ocean. The south wesr rift zone also appears to act as a conduit for ground water...

  9. We develop a microprocessor design that tolerates hard faults, including fabrication defects and in-field faults,

    E-Print Network [OSTI]

    Sorin, Daniel J.

    1 Abstract We develop a microprocessor design that tolerates hard faults, including fabrication defects and in-field faults, by leveraging existing microprocessor redundancy. To do this, we must: detect FDUs with hard faults. In our reliable microprocessor design, we use DIVA dynamic verification

  10. Thermal anomaly near the Aigio fault, Gulf of Corinth, Greece, maybe due to convection below the fault

    E-Print Network [OSTI]

    Thermal anomaly near the Aigio fault, Gulf of Corinth, Greece, maybe due to convection below intersecting the active Aigio fault, Corinth Rift, Greece. The heat flow is 53 mW/m2 , indicating of Corinth, Greece, maybe due to convection below the fault, Geophys. Res. Lett., 34, L06314, doi:10

  11. Method development and strategy for the characterization of complexly faulted and fractured rhyolitic tuffs, Yucca Mountain, Nevada

    SciTech Connect (OSTI)

    Karasaki, K. [Lawrence Berkeley Lab., CA (United States); Galloway, D. [Geological Survey, Sacramento, CA (United States)

    1991-06-01T23:59:59.000Z

    The planned high-level nuclear waste repository at Yucca Mountain, Nevada, would exist in unsaturated, fractured welded tuff. One possible contaminant pathway to the accessible environment is transport by groundwater infiltrating to the water table and flowing through the saturated zone. Therefore, an effort to characterize the hydrology of the saturated zone is being undertaken in parallel with that of the unsaturated zone. As a part of the saturated zone investigation, there wells-UE-25c{number_sign}1, UE-25c{number_sign}2, and UE-25c{number_sign}3 (hereafter called the c-holes)-were drilled to study hydraulic and transport properties of rock formations underlying the planned waste repository. The location of the c-holes is such that the formations penetrated in the unsaturated zone occur at similar depths and with similar thicknesses as at the planned repository site. In characterizing a highly heterogeneous flow system, several issues emerge. (1) The characterization strategy should allow for the virtual impossibility to enumerate and characterize all heterogeneities. (2) The methodology to characterize the heterogeneous flow system at the scale of the well tests needs to be established. (3) Tools need to be developed for scaling up the information obtained at the well-test scale to the larger scale of the site. In the present paper, the characterization strategy and the methods under development are discussed with the focus on the design and analysis of the field experiments at the c-holes.

  12. Fault Tolerant CORBASpecification, OMG document: ptc/20000404

    E-Print Network [OSTI]

    Roma "La Sapienza", Universitŕ di

    Fault Tolerant CORBASpecification, V1.0 OMG document: ptc/2000­04­04 replaces draft adopted specification ptc/2000­03­04 and submission document orbos/00­01­19 This document is an OMG Final Adopted in the finalization phase. Comments on the content of this document are welcomed, and should be directed to issues

  13. All row, planar fault detection system

    DOE Patents [OSTI]

    Archer, Charles Jens; Pinnow, Kurt Walter; Ratterman, Joseph D; Smith, Brian Edward

    2013-07-23T23:59:59.000Z

    An apparatus, program product and method for detecting nodal faults may simultaneously cause designated nodes of a cell to communicate with all nodes adjacent to each of the designated nodes. Furthermore, all nodes along the axes of the designated nodes are made to communicate with their adjacent nodes, and the communications are analyzed to determine if a node or connection is faulty.

  14. Multi-directional fault detection system

    DOE Patents [OSTI]

    Archer, Charles Jens (Rochester, MN); Pinnow, Kurt Walter (Rochester, MN); Ratterman, Joseph D. (Rochester, MN); Smith, Brian Edward (Rochester, MN)

    2010-11-23T23:59:59.000Z

    An apparatus, program product and method checks for nodal faults in a group of nodes comprising a center node and all adjacent nodes. The center node concurrently communicates with the immediately adjacent nodes in three dimensions. The communications are analyzed to determine a presence of a faulty node or connection.

  15. Multi-directional fault detection system

    DOE Patents [OSTI]

    Archer, Charles Jens; Pinnow, Kurt Walter; Ratterman, Joseph D.; Smith, Brian Edward

    2010-06-29T23:59:59.000Z

    An apparatus, program product and method checks for nodal faults in a group of nodes comprising a center node and all adjacent nodes. The center node concurrently communicates with the immediately adjacent nodes in three dimensions. The communications are analyzed to determine a presence of a faulty node or connection.

  16. Global Trajectory Planning for Fault Tolerant Manipulators

    E-Print Network [OSTI]

    . Khosla Department of Electrical and Computer Engineering and The Robotics Institute, Carnegie Mellon attribute of robot manipulators in a growing range of applications such as space missions, nuclear waste retrieval, and medical robot­ ics. This trend has spawned a research effort in fault toler­ ant robotics

  17. Fault-tolerant, Universal Adiabatic Quantum Computation

    E-Print Network [OSTI]

    Ari Mizel

    2014-03-30T23:59:59.000Z

    Quantum computation has revolutionary potential for speeding computational tasks such as factoring and simulating quantum systems, but the task of constructing a quantum computer is daunting. Adiabatic quantum computation and other ``hands-off" approaches relieve the need for rapid, precise pulsing to control the system, inspiring at least one high-profile effort to realize a hands-off quantum computing device. But is hands-off incompatible with fault-tolerant? Concerted effort and many innovative ideas have not resolved this question but have instead deepened it, linking it to fundamental problems in quantum complexity theory. Here we present a hands-off approach that is provably (a) capable of scalable universal quantum computation in a non-degenerate ground state and (b) fault-tolerant against an analogue of the usual local stochastic fault model. A satisfying physical and numerical argument indicates that (c) it is also fault-tolerant against thermal excitation below a threshold temperature independent of the computation size.

  18. 54 MAY | 2012 Gearbox Fault Detection

    E-Print Network [OSTI]

    Kusiak, Andrew

    , research in fault identification and condition monitoring is war- ranted. In this study, detecting wind of a test wind turbine. The gearbox was retested at the Dynamometer Test Facility (DTF) at NREL. To retest the gearbox, the complete nacelle, and the drive train of the test wind turbine were installed at the DTF

  19. Fault-tolerant quantum computation by anyons

    E-Print Network [OSTI]

    A. Yu. Kitaev

    1997-07-09T23:59:59.000Z

    A two-dimensional quantum system with anyonic excitations can be considered as a quantum computer. Unitary transformations can be performed by moving the excitations around each other. Measurements can be performed by joining excitations in pairs and observing the result of fusion. Such computation is fault-tolerant by its physical nature.

  20. Fault-Tolerant Spanners: Better and Simpler

    E-Print Network [OSTI]

    Dinitz, Michael

    2011-01-01T23:59:59.000Z

    A natural requirement of many distributed structures is fault-tolerance: after some failures, whatever remains from the structure should still be effective for whatever remains from the network. In this paper we examine spanners of general graphs that are tolerant to vertex failures, and significantly improve their dependence on the number of faults $r$, for all stretch bounds. For stretch $k \\geq 3$ we design a simple transformation that converts every $k$-spanner construction with at most $f(n)$ edges into an $r$-fault-tolerant $k$-spanner construction with at most $O(r^3 \\log n) \\cdot f(2n/r)$ edges. Applying this to standard greedy spanner constructions gives $r$-fault tolerant $k$-spanners with $\\tilde O(r^{2} n^{1+\\frac{2}{k+1}})$ edges. The previous construction by Chechik, Langberg, Peleg, and Roddity [STOC 2009] depends similarly on $n$ but exponentially on $r$ (approximately like $k^r$). For the case $k=2$ and unit-length edges, an $O(r \\log n)$-approximation algorithm is known from recent work of D...

  1. Coordinated Fault Tolerance for High-Performance Computing

    SciTech Connect (OSTI)

    Dongarra, Jack; Bosilca, George; et al.

    2013-04-08T23:59:59.000Z

    Our work to meet our goal of end-to-end fault tolerance has focused on two areas: (1) improving fault tolerance in various software currently available and widely used throughout the HEC domain and (2) using fault information exchange and coordination to achieve holistic, systemwide fault tolerance and understanding how to design and implement interfaces for integrating fault tolerance features for multiple layers of the software stack—from the application, math libraries, and programming language runtime to other common system software such as jobs schedulers, resource managers, and monitoring tools.

  2. Probabilistic model of fault detection in quantum circuits

    E-Print Network [OSTI]

    Anindita Banerjee; Anirban Pathak

    2009-05-12T23:59:59.000Z

    It is shown that the fault testing for quantum circuits does not follow conventional classical techniques. If probabilistic gate like Hadamard gate is included in a circuit then the classical notion of test vector is shown to fail. We have reported several new and distinguishing features of quantum fault and also presented a general methodology for detection of functional faults in a quantum circuit. The technique can generate test vectors for detection of different kinds of fault. Specific examples are given and time complexity of the proposed quantum fault detection algorithm is reported.

  3. California's Snow Zone Lands Henry W. Anderson

    E-Print Network [OSTI]

    Standiford, Richard B.

    . He is the author or co-author of more than 45 technical publications on hydrology, sedimentation . . . . . . . . . . . . . . . . . . . . . . . . 13 Water Losses in Winter and Spring . . . . . . . . . . . . . . . . . . . . . . 13 Water Losses . . . . . . . . . . . . . . . . . . . . . . . . . 15 Water Savings in Summer . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Water Losses

  4. Overlap zoned electrically heated particulate filter

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Chapman, Mark R [Brighton, MI

    2011-07-19T23:59:59.000Z

    A system includes a particulate matter (PM) filter that includes an upstream end for receiving exhaust gas and a downstream end. A zoned heater is arranged spaced from the upstream end and comprises N zones, where N is an integer greater than one, wherein each of the N zones comprises M sub-zones, where M is an integer greater than or equal to one, and wherein the N zones and the M sub-zones are arranged in P layers, where P is an integer greater than one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates non-selected ones of the N zones.

  5. Lithogenic and cosmogenic tracers in catchment hydrology

    SciTech Connect (OSTI)

    Nimz, G.J.

    1995-01-01T23:59:59.000Z

    A variety of physical processes affect solute concentrations within catchment waters. The isotopic compositions of the solutes can indicate which processes have determined the observed concentrations. These processes together constitute the physical history of the water, which is one of the primary concerns in hydrology. Many groundwater solutes are derived as a result of interaction between the water and the rock and/or soil within the system. These are termed {open_quotes}lithogenic{close_quotes} solutes. The isotopic compositions of these solutes provide information regarding rock-water interactions. Many other solutes have their isotopic compositions determined both internally and externally to the catchment system. Important members of this group include solutes that have isotopic compositions produced by atomic particle interactions with other nuclides. The source of the atomic particles can be cosmic radiation (producing {open_quotes}cosmogenic{close_quotes} nuclides in the atmosphere and land surface), anthropogenic nuclear reactions (producing {open_quotes}thermonuclear{close_quotes} nuclides), or radioactive and fission decay of naturally-occurring elements, such as U and Th (producing {open_quotes}in-situ{close_quotes} lithogenic nuclides in the deep subsurface). Current language usage often combines all of the atomic particle-produced nuclides under the heading {open_quotes}cosmogenic nuclides{close_quotes}, and for simplicity we will often follow that usage, although always clearly indicating which variety is being discussed. This paper addresses the processes that affect the lithogenic and cosmogenic solute compositions in groundwater, and how these compositions can therefore be used in integrative ways to understand the physical history of groundwater within a catchment system.

  6. Area balance and strain in an extensional fault system: Strategies for improved oil recovery in fractured chalk, Gilbertown Field, southwestern Alabama. Final report, March 1996--September 1998

    SciTech Connect (OSTI)

    Pashin, J.C.; Raymond, D.E.; Rindsberg, A.K.; Alabi, G.G.; Carroll, R.E.; Groshong, R.H.; Jin, G.

    1998-12-01T23:59:59.000Z

    This project was designed to analyze the structure of Mesozoic and Tertiary strata in Gilbertown Field and adjacent areas to suggest ways in which oil recovery can be improved. The Eutaw Formation comprises 7 major flow units and is dominated by low-resistivity, low-contrast play that is difficult to characterize quantitatively. Selma chalk produces strictly from fault-related fractures that were mineralized as warm fluid migrated from deep sources. Resistivity, dipmeter, and fracture identification logs corroborate that deformation is concentrated in the hanging-wall drag zones. New area balancing techniques were developed to characterize growth strata and confirm that strain is concentrated in hanging-wall drag zones. Curvature analysis indicates that the faults contain numerous fault bends that influence fracture distribution. Eutaw oil is produced strictly from footwall uplifts, whereas Selma oil is produced from fault-related fractures. Clay smear and mineralization may be significant trapping mechanisms in the Eutaw Formation. The critical seal for Selma reservoirs, by contrast, is where Tertiary clay in the hanging wall is juxtaposed with poorly fractured Selma chalk in the footwall. Gilbertown Field can be revitalized by infill drilling and recompletion of existing wells. Directional drilling may be a viable technique for recovering untapped oil from Selma chalk. Revitalization is now underway, and the first new production wells since 1985 are being drilled in the western part of the field.

  7. Zone refining of plutonium metal

    SciTech Connect (OSTI)

    NONE

    1997-05-01T23:59:59.000Z

    The purpose of this study was to investigate zone refining techniques for the purification of plutonium metal. The redistribution of 10 impurity elements from zone melting was examined. Four tantalum boats were loaded with plutonium impurity alloy, placed in a vacuum furnace, heated to 700{degrees}C, and held at temperature for one hour. Ten passes were made with each boat. Metallographic and chemical analyses performed on the plutonium rods showed that, after 10 passes, moderate movement of certain elements were achieved. Molten zone speeds of 1 or 2 inches per hour had no effect on impurity element movement. Likewise, the application of constant or variable power had no effect on impurity movement. The study implies that development of a zone refining process to purify plutonium is feasible. Development of a process will be hampered by two factors: (1) the effect on impurity element redistribution of the oxide layer formed on the exposed surface of the material is not understood, and (2) the tantalum container material is not inert in the presence of plutonium. Cold boat studies are planned, with higher temperature and vacuum levels, to determine the effect on these factors. 5 refs., 1 tab., 5 figs.

  8. Inverse Modeling of Hydrologic Parameters Using Surface Flux and Runoff Observations in the Community Land Model

    SciTech Connect (OSTI)

    Sun, Yu; Hou, Zhangshuan; Huang, Maoyi; Tian, Fuqiang; Leung, Lai-Yung R.

    2013-12-10T23:59:59.000Z

    This study demonstrates the possibility of inverting hydrologic parameters using surface flux and runoff observations in version 4 of the Community Land Model (CLM4). Previous studies showed that surface flux and runoff calculations are sensitive to major hydrologic parameters in CLM4 over different watersheds, and illustrated the necessity and possibility of parameter calibration. Two inversion strategies, the deterministic least-square fitting and stochastic Markov-Chain Monte-Carlo (MCMC) - Bayesian inversion approaches, are evaluated by applying them to CLM4 at selected sites. The unknowns to be estimated include surface and subsurface runoff generation parameters and vadose zone soil water parameters. We find that using model parameters calibrated by the least-square fitting provides little improvements in the model simulations but the sampling-based stochastic inversion approaches are consistent - as more information comes in, the predictive intervals of the calibrated parameters become narrower and the misfits between the calculated and observed responses decrease. In general, parameters that are identified to be significant through sensitivity analyses and statistical tests are better calibrated than those with weak or nonlinear impacts on flux or runoff observations. Temporal resolution of observations has larger impacts on the results of inverse modeling using heat flux data than runoff data. Soil and vegetation cover have important impacts on parameter sensitivities, leading to the different patterns of posterior distributions of parameters at different sites. Overall, the MCMC-Bayesian inversion approach effectively and reliably improves the simulation of CLM under different climates and environmental conditions. Bayesian model averaging of the posterior estimates with different reference acceptance probabilities can smooth the posterior distribution and provide more reliable parameter estimates, but at the expense of wider uncertainty bounds.

  9. Improving land-surface model hydrology: Is an explicit aquifer model better than a deeper soil profile?

    E-Print Network [OSTI]

    2007-01-01T23:59:59.000Z

    land-surface model hydrology: Is an explicit aquifer modelAL. : LAND-SURFACE MODEL HYDROLOGY Changnon, S. , et al. (land-surface model hydrology: Is an explicit aquifer model

  10. Quantifying and Generalizing Hydrologic Responses to Dam Regulation using a Statistical Modeling Approach

    SciTech Connect (OSTI)

    McManamay, Ryan A [ORNL

    2014-01-01T23:59:59.000Z

    Despite the ubiquitous existence of dams within riverscapes, much of our knowledge about dams and their environmental effects remains context-specific. Hydrology, more than any other environmental variable, has been studied in great detail with regard to dam regulation. While much progress has been made in generalizing the hydrologic effects of regulation by large dams, many aspects of hydrology show site-specific fidelity to dam operations, small dams (including diversions), and regional hydrologic regimes. A statistical modeling framework is presented to quantify and generalize hydrologic responses to varying degrees of dam regulation. Specifically, the objectives were to 1) compare the effects of local versus cumulative dam regulation, 2) determine the importance of different regional hydrologic regimes in influencing hydrologic responses to dams, and 3) evaluate how different regulation contexts lead to error in predicting hydrologic responses to dams. Overall, model performance was poor in quantifying the magnitude of hydrologic responses, but performance was sufficient in classifying hydrologic responses as negative or positive. Responses of some hydrologic indices to dam regulation were highly dependent upon hydrologic class membership and the purpose of the dam. The opposing coefficients between local and cumulative-dam predictors suggested that hydrologic responses to cumulative dam regulation are complex, and predicting the hydrology downstream of individual dams, as opposed to multiple dams, may be more easy accomplished using statistical approaches. Results also suggested that particular contexts, including multipurpose dams, high cumulative regulation by multiple dams, diversions, close proximity to dams, and certain hydrologic classes are all sources of increased error when predicting hydrologic responses to dams. Statistical models, such as the ones presented herein, show promise in their ability to model the effects of dam regulation effects at large spatial scales as to generalize the directionality of hydrologic responses.

  11. Integrated Field, Laboratory, and Modeling Studies to Determine the Effects of Linked Microbial and Physical Spatial Heterogeneity on Engineered Vadose Zone Bioremediation

    SciTech Connect (OSTI)

    Fred Brokman; John Selker; Mark Rockhold

    2004-01-26T23:59:59.000Z

    While numerous techniques exist for remediation of contaminant plumes in groundwater or near the soil surface, remediation methods in the deep vadose zone are less established due to complex transport dynamics and sparse microbial populations. There is a lack of knowledge on how physical and hydrologic features of the vadose zone control microbial growth and colonization in response to nutrient delivery during bioremediation. Yet pollution in the vadose zone poses a serious threat to the groundwater resources lying deeper in the sediment. While the contaminants may be slowly degraded by native microbial communities, microbial degradation rates rarely keep pace with the spread of the pollutant. It is crucial to increase indigenous microbial degradation in the vadose zone to combat groundwater contamination.

  12. Integrated Field, Laboratory, and Modeling Studies to Determine the Effects of Linked Microbial and Physical Spatial Heterogeneity on Engineered Vadose Zone Bioremediation

    SciTech Connect (OSTI)

    Brockman, Fred J.; Selker, John S.; Rockhold, Mark L.

    2004-10-31T23:59:59.000Z

    Executive Summary - While numerous techniques exist for remediation of contaminant plumes in groundwater or near the soil surface, remediation methods in the deep vadose zone are less established due to complex transport dynamics and sparse microbial populations. There is a lack of knowledge on how physical and hydrologic features of the vadose zone control microbial growth and colonization in response to nutrient delivery during bioremediation. Yet pollution in the vadose zone poses a serious threat to the groundwater resources lying deeper in the sediment. While the contaminants may be slowly degraded by native microbial communities, microbial degradation rates rarely keep pace with the spread of the pollutant. It is crucial to increase indigenous microbial degradation in the vadose zone to combat groundwater contamination...

  13. Updating the US Hydrologic Classification: An Approach to Clustering and Stratifying Ecohydrologic Data

    SciTech Connect (OSTI)

    McManamay, Ryan A [ORNL; Bevelhimer, Mark S [ORNL; Kao, Shih-Chieh [ORNL

    2013-01-01T23:59:59.000Z

    Hydrologic classifications unveil the structure of relationships among groups of streams with differing stream flow and provide a foundation for drawing inferences about the principles that govern those relationships. Hydrologic classes provide a template to describe ecological patterns, generalize hydrologic responses to disturbance, and stratify research and management needs applicable to ecohydrology. We developed two updated hydrologic classifications for the continental US using two streamflow datasets of varying reference standards. Using only reference-quality gages, we classified 1715 stream gages into 12 classes across the US. By including more streamflow gages (n=2618) in a separate classification, we increased the dimensionality (i.e. classes) and hydrologic distinctiveness within regions at the expense of decreasing the natural flow standards (i.e. reference quality). Greater numbers of classes and higher regional affiliation within our hydrologic classifications compared to that of the previous US hydrologic classification (Poff, 1996) suggested that the level of hydrologic variation and resolution was not completely represented in smaller sample sizes. Part of the utility of classification systems rests in their ability classify new objects and stratify analyses. We constructed separate random forests to predict hydrologic class membership based on hydrologic indices or landscape variables. In addition, we provide an approach to assessing potential outliers due to hydrologic alteration based on class assignment. Departures from class membership due to disturbance take into account multiple hydrologic indices simultaneously; thus, classes can be used to determine if disturbed streams are functioning within the realm of natural hydrology.

  14. Renewable Energy Generation Zone Property Tax Abatement

    Broader source: Energy.gov [DOE]

    Local areas in Mimssouri can be designated as Renewable Energy Generation Zones and receive property tax abatements as part of the Enhanced Enterprise Zone program. Legislation (H.B. 737) enacted...

  15. Enterprise Zone Sales Tax Exemption (Kansas)

    Broader source: Energy.gov [DOE]

    The Enterprise Zone Sales Tax Exemption offers businesses located in such economic development zones a 100 percent sales tax exemption on the purchase of labor and materials to construct or remodel...

  16. Statewide Empire Zone Program (New York)

    Broader source: Energy.gov [DOE]

    Business that do not meet the requirements for standard financing, but are in need of capital, may qualify for NYBDC’s Statewide Empire Zone Program. The Statewide Zone Capital Corporation (SZCC),...

  17. Local Option- Rural Renewable Energy Development Zones

    Broader source: Energy.gov [DOE]

    Cities, counties, or several contiguous counties in Oregon can set up Rural Renewable Energy Development Zones. The zone can only cover territory outside of the urban growth boundary of any large...

  18. Keystone Innovation Zone Tax Credit Program (Pennsylvania)

    Broader source: Energy.gov [DOE]

    The Keystone Innovation Zone Tax Credit Program provides tax credits to companies less than eight years old who operate within designated innovation zones. A total pool of $25 million in tax...

  19. Virginia Enterprise Zone Job Creation Grant (Virginia)

    Broader source: Energy.gov [DOE]

    The Virginia Enterprise Zone Job Creation Grant provides cash grants to businesses located in Enterprise zones that create permanent new jobs over a four-job threshold. State incentives are...

  20. Technical Report TR-014 May 2001 Research Section, Vancouver Forest Region, BCMOF Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife just like Forest Region, BCMOF Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology

  1. The hydrology of malaria : field observations and mechanistic modeling of the malaria transmission response to environmental climatic variability

    E-Print Network [OSTI]

    Bomblies, Arne

    2009-01-01T23:59:59.000Z

    A coupled HYDrology, Entomology and MAlaria Transmission Simulator (HYDREMATS) has been developed. The model simulates the hydrological and climatological determinants of malaria transmission mechanistically and at high ...

  2. Simulation of hydrology and population dynamics of Anopheles mosquitoes around the Koka Reservoir in Ethiopia

    E-Print Network [OSTI]

    Endo, Noriko S.M. Massachusetts Institute of Technology

    2014-01-01T23:59:59.000Z

    This thesis applies the HYDRology, Entomology and MAlaria Transmission Simulator (HYDREMATS) to the environment around a water resources reservoir in Ethiopia. HYDREMATS was modified to simulate the local hydrology and the ...

  3. MEDITERRANEAN CLIMATE STREAMS Review Paper Maintaining and restoring hydrologic habitat connectivity

    E-Print Network [OSTI]

    Merenlender, Adina

    MEDITERRANEAN CLIMATE STREAMS Review Paper Maintaining and restoring hydrologic habitat connectivity in mediterranean streams: an integrated modeling framework Adina M. Merenlender · Mary K. Matella of hydrologic habitat connectivity and benefits of habitat restoration alternatives we provide: (1) a review

  4. Nitrate and sulphate dynamics in peat subjected to different hydrological conditions: Batch experiments and field comparison

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Nitrate and sulphate dynamics in peat subjected to different hydrological conditions: Batch concentrations were investigated in bioreactors, using peat samples from field sites influenced by different hydrologic regimes. In this experiment, peat samples were subjected to similar conditions to address

  5. Santa Clara County- Zoning Ordinance (California)

    Broader source: Energy.gov [DOE]

    Santa Clara County's Zoning Ordinance includes standards for wind and solar structures for residential, agricultural, and commercial uses.

  6. Completing fault models for abductive diagnosis

    SciTech Connect (OSTI)

    Knill, E. (Los Alamos National Lab., NM (United States)); Cox, P.T.; Pietrzykowski, T. (Technical Univ., NS (Canada))

    1992-11-05T23:59:59.000Z

    In logic-based diagnosis, the consistency-based method is used to determine the possible sets of faulty devices. If the fault models of the devices are incomplete or nondeterministic, then this method does not necessarily yield abductive explanations of system behavior. Such explanations give additional information about faulty behavior and can be used for prediction. Unfortunately, system descriptions for the consistency-based method are often not suitable for abductive diagnosis. Methods for completing the fault models for abductive diagnosis have been suggested informally by Poole and by Cox et al. Here we formalize these methods by introducing a standard form for system descriptions. The properties of these methods are determined in relation to consistency-based diagnosis and compared to other ideas for integrating consistency-based and abductive diagnosis.

  7. Combustion Air Zone (CAZ) Best Practices | Department of Energy

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

    Combustion Air Zone (CAZ) Best Practices Combustion Air Zone (CAZ) Best Practices Combustion Air Zone (CAZ) Best Practices Webinar. Presentation More Documents & Publications...

  8. Stuck-at-fault test set compaction

    E-Print Network [OSTI]

    Vanfickell, Jason Michael

    2013-02-22T23:59:59.000Z

    of sltcp g(0. 5-ones~robo~, ~) Exc Bal, = 0. 25 ? of sites Figure 1. Formula for computation of the excitation balance Excitation balance is a metric computed for every detectable fault in the entire circuit. It is intended to provide a measure... Sigma ~ National Society of Collegiate Scholars Activities: ~ Texas A&M University Institute of Electrical and Electronic Engineers IT/Technology Chair and Webmaster, Fall 2003 ? Spring 2004 ~ Texas A&M University Student Engineers' Council...

  9. Global transition zone tomography Jeroen Ritsema1

    E-Print Network [OSTI]

    Ritsema, Jeroen

    Global transition zone tomography Jeroen Ritsema1 and Hendrik Jan van Heijst Seismological on accurate models of seismic velocity variation in the upper mantle transition zone (400­1000 km depth. Such data provide new global transition zone constraints. We combined more than a million measurements

  10. 2 Executive Summary Figure 1 Location of White Salmon subbasin, topography, vegetation, demographics, and hydrology

    E-Print Network [OSTI]

    , demographics, and hydrology #12;xii 2.1 Purpose and Scope The White Salmon subbasin management plan

  11. A cyber-infrastructure for the measurement and estimation of large-scale hydrologic processes

    E-Print Network [OSTI]

    Kerkez, Branko

    2012-01-01T23:59:59.000Z

    Potential Changes in hydropower production from globalirrigation, recreation, hydropower generation, and otheris also generated via hydropower. The major hydrologic

  12. Eastern Energy Zones Mapping Tool

    Broader source: Energy.gov [DOE]

    The Eastern Interconnection States’ Planning Council (EISPC) has released the Energy Zones (EZ) Mapping Tool, a free, web-based interactive tool that will help states and other stakeholders in the Eastern Interconnection identify geographic areas suitable for the development of clean energy resources (natural gas, sequestration or utilitization locations for C02 from coal, nuclear, and renewable) which can potentially provide significant amounts of new electric power generation.

  13. Undulator Hall Air Temperature Fault Scenarios

    SciTech Connect (OSTI)

    Sevilla, J.; Welch, J.; /SLAC; ,

    2010-11-17T23:59:59.000Z

    Recent experience indicates that the LCLS undulator segments must not, at any time following tuning, be allowed to change temperature by more than about {+-}2.5 C or the magnetic center will irreversibly shift outside of acceptable tolerances. This vulnerability raises a concern that under fault conditions the ambient temperature in the Undulator Hall might go outside of the safe range and potentially could require removal and retuning of all the segments. In this note we estimate changes that can be expected in the Undulator Hall air temperature for three fault scenarios: (1) System-wide power failure; (2) Heating Ventilation and Air Conditioning (HVAC) system shutdown; and (3) HVAC system temperature regulation fault. We find that for either a system-wide power failure or an HVAC system shutdown (with the technical equipment left on), the short-term temperature changes of the air would be modest due to the ability of the walls and floor to act as a heat ballast. No action would be needed to protect the undulator system in the event of a system-wide power failure. Some action to adjust the heat balance, in the case of the HVAC power failure with the equipment left on, might be desirable but is not required. On the other hand, a temperature regulation failure of the HVAC system can quickly cause large excursions in air temperature and prompt action would be required to avoid damage to the undulator system.

  14. State of the hydrologic source term

    SciTech Connect (OSTI)

    Kersting, A.

    1996-12-01T23:59:59.000Z

    The Underground Test Area (UGTA) Operable Unit was defined by the U.S. Department of energy, Nevada operations Office to characterize and potentially remediate groundwaters impacted by nuclear testing at the Nevada Test Site (NTS). Between 1955 and 1992, 828 nuclear devices were detonated underground at the NTS (DOE), 1994. Approximately one third of the nuclear tests were detonated at or below the standing water table and the remainder were located above the water table in the vadose zone. As a result, the distribution of radionuclides in the subsurface and, in particular, the availability of radionuclides for transport away from individual test cavities are major concerns at the NTS. The approach taken is to carry out field-based studies of both groundwaters and host rocks within the near-field in order to develop a detailed understanding of the present-day concentration and spatial distribution of constituent radionuclides. Understanding the current distribution of contamination within the near-field and the conditions under and processes by which the radionuclides were transported make it possible to predict future transport behavior. The results of these studies will be integrated with archival research, experiments and geochemical modeling for complete characterization.

  15. CHEMICAL AND HYDROLOGIC DATA FROM THE CEMENT CREEK AND UPPER ANIMAS RIVER CONFLUENCE AND

    E-Print Network [OSTI]

    CHEMICAL AND HYDROLOGIC DATA FROM THE CEMENT CREEK AND UPPER ANIMAS RIVER CONFLUENCE AND MIXING.S. Geological Survey #12;CHEMICAL AND HYDROLOGIC DATA FROM THE CEMENT CREEK AND UPPER ANIMAS RIVER CONFLUENCE.H., Schemel, L.E., 2007, Chemical and hydrologic data form the Cement Creek and upper Animas River confluence

  16. A multicomponent coupled model of glacier hydrology 1. Theory and synthetic examples

    E-Print Network [OSTI]

    Flowers, Gwenn

    A multicomponent coupled model of glacier hydrology 1. Theory and synthetic examples Gwenn E; published 12 November 2002. [1] Basal hydrology is acknowledged as a fundamental control on glacier dynamics of existing basal hydrology models is the treatment of the glacier bed as an isolated system. We present

  17. Developing a TeraGrid Based Land Surface Hydrology and Weather Modeling Interface

    E-Print Network [OSTI]

    Jiang, Wen

    Developing a TeraGrid Based Land Surface Hydrology and Weather Modeling Interface Hsin-I Chang1 iclimate@purdue.edu -------------------- -------------------- 1 INTRODUCTION Real world hydrologic cyberinfrastructure (CI) has been articulated in many workshops and meetings of the environmental and hydrologic

  18. GEOG4750 (GEOG5750) Surface Water Hydrology University of North Texas

    E-Print Network [OSTI]

    Pan, Feifei

    GEOG4750 (GEOG5750) Surface Water Hydrology University of North Texas Department of Geography-11:50 AM or by appointment. Email: fpan@unt.edu Required Text: Elements of Physical Hydrology by Hornberger, G.M., Johns Hopkins University Press, 1998. References: Physical Hydrology by Dingman, Prentice

  19. Environmental Hydrology and Hydraulic Engineering Degree Requirements for 1year MS

    E-Print Network [OSTI]

    Minsker, Barbara S.

    Environmental Hydrology and Hydraulic Engineering Degree Requirements for 1year MS To obtain (choose 4 hours) Core Courses [Requireda ] CEE 450: Surface Hydrology CEE 451: Env. Fluid Mech. CEE 457: Groundwater Hydrology CEE 434: Environmental Systems I CEE 595W: Seminar CEE 595W: Seminar Choose at least

  20. Ellen Marie Douglas, PE, PG, PhD Assistant Professor, Hydrology

    E-Print Network [OSTI]

    Douglas, Ellen M.

    Ellen Marie Douglas, PE, PG, PhD Assistant Professor, Hydrology Environmental, Earth and Ocean. 9758 1998 M.S. CIVIL ENGINEERING, University of New Hampshire 1994 B.S. in HYDROLOGY, University of New Hampshire, GPA 3.94/4.00 1991 Summa Cum Laude , University Honors in Hydrology AWARDS EXCELLENCE IN TEACHING

  1. Andy Bullock and Mike Acreman Hydrology and Earth System Sciences, 7(3), 358389 (2003) EGU

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Andy Bullock and Mike Acreman 358 Hydrology and Earth System Sciences, 7(3), 358389 (2003) © EGU The role of wetlands in the hydrological cycle Andy Bullock1 and Mike Acreman2 1 Independent Consultant, Ledbury, Herefordshire, HR8 2DX, UK 2 Centre for Ecology and Hydrology, Wallingford, Oxon. OX10 8BB, UK

  2. Franois Anctil and Nicolas Lauzon Hydrology and Earth System Sciences, 8(5), 940958 (2004) EGU

    E-Print Network [OSTI]

    Boyer, Edmond

    François Anctil and Nicolas Lauzon 940 Hydrology and Earth System Sciences, 8(5), 940958 (2004.lauzon@golder.com Abstract Since the 1990s, neural networks have been applied to many studies in hydrology and water and stacking having been applied regularly in hydrology and water resources for some years, while Bayesian

  3. HYDROLOGY, HYDROCHEMISTRY AND IMPLICATIONS FOR WATER SUPPLY OF A CLOUD FOREST IN CENTRAL AMERICA

    E-Print Network [OSTI]

    Walter, M.Todd

    HYDROLOGY, HYDROCHEMISTRY AND IMPLICATIONS FOR WATER SUPPLY OF A CLOUD FOREST IN CENTRAL AMERICA Alonso Caballero #12;HYDROLOGY, HYDROCHEMISTRY AND IMPLICATIONS FOR WATER SUPPLY OF A CLOUD FOREST and dry periods. Consequently, the tropical hydrology of cloud-forest watersheds is not well studied

  4. Bettina Ott and Stefan Uhlenbrook Hydrology and Earth System Sciences, 8(1), 6278 (2004) EGU

    E-Print Network [OSTI]

    Boyer, Edmond

    Bettina Ott and Stefan Uhlenbrook 62 Hydrology and Earth System Sciences, 8(1), 6278 (2004) © EGU, Wasserwirtschaftsamt Bamberg, Kasernstra�e 4, 96047 Bamberg, Germany 2 University of Freiburg, Institute of Hydrology, Fahnenbergplatz, D-79098 Freiburg, Germany E-mail for corresponding author: stefan.uhlenbro@hydrology

  5. GEOG4750 (GEOG5960.02) Surface Water Hydrology University of North Texas

    E-Print Network [OSTI]

    Pan, Feifei

    GEOG4750 (GEOG5960.02) Surface Water Hydrology University of North Texas Department of Geography-12:00PM or by appointment. Email: fpan@unt.edu Required Text: Elements of Physical Hydrology by Hornberger, G.M., Johns Hopkins University Press, 1998. References: Physical Hydrology by Dingman, Prentice

  6. Simulated Global Atmospheric Dust Distribution: Sensitivity to Regional Topography, Geomorphology, and Hydrology

    E-Print Network [OSTI]

    Zender, Charles

    , and Hydrology Charles S. Zender, Earth System Science Dept., UC Irvine, Irvine, CA 92697 (zender@uci.edu) David for predicting future trends in dust production. We identify three related geomorphologic and hydrologic hydrologically disturbed/renewed sed- iments. Dust models which attempt to account for sediment-rich source

  7. GEOG4750 (GEOG5750) Surface Water Hydrology University of North Texas

    E-Print Network [OSTI]

    Pan, Feifei

    GEOG4750 (GEOG5750) Surface Water Hydrology University of North Texas Department of Geography:50 AM or by appointment. Email: feifei.pan@unt.edu Required Text: Elements of Physical Hydrology by Hornberger, G.M., Johns Hopkins University Press, 1998. References: Physical Hydrology by Dingman, Prentice

  8. Z .Journal of Contaminant Hydrology 36 1999 7389 Transport of Pseudomonas fluorescens strain P17

    E-Print Network [OSTI]

    Z .Journal of Contaminant Hydrology 36 1999 73­89 Transport of Pseudomonas fluorescens strain P17�ironmental Engineering, Uni�ersity of Arizona, Tucson, AZ 85721, USA d Department of Hydrology and Water Resources, Uni-7722 98 00143-0 #12;( )D.G. Jewett et al.rJournal of Contaminant Hydrology 36 1999 73­8974 the interface

  9. Mountain hydrology of the western United States Roger C. Bales,1

    E-Print Network [OSTI]

    California at Santa Barbara, University of

    Mountain hydrology of the western United States Roger C. Bales,1 Noah P. Molotch,2,3 Thomas H, population growth, and land use change drive the need for new hydrologic knowledge and understanding. In the mountainous West and other similar areas worldwide, three pressing hydrologic needs stand out: first

  10. Hydrology as a driver of biodiversity: Controls on carrying capacity, niche formation, and dispersal

    E-Print Network [OSTI]

    Konar, Megan

    Hydrology as a driver of biodiversity: Controls on carrying capacity, niche formation Centre for Hydrology, ``Dino Tonini'', Padua, Italy a r t i c l e i n f o Article history: Available online 3 March 2012 Keywords: Hydrology Biodiversity Dispersal Carrying capacity Niches Climate change

  11. Mira Kobold and Kay Suelj Hydrology and Earth System Sciences, 9(4), 322332 (2005) EGU

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Mira Kobold and Kay Suelj 322 Hydrology and Earth System Sciences, 9(4), 322332 (2005) © EGU Precipitation forecasts and their uncertainty as input into hydrological models Mira Kobold and Kay Suelj the weather forecasts with the information on catchment conditions and a hydrological forecasting model can

  12. Earth'sFuture Socio-hydrology: Use-inspired water sustainability science

    E-Print Network [OSTI]

    Konar, Megan

    Earth'sFuture Socio-hydrology: Use-inspired water sustainability science for the Anthropocene M socio-hydrology as a use-inspired scientific discipline to focus on understanding, interpretation scales. A key aspect of socio-hydrology is explicit inclusion of two-way feedbacks between human

  13. Journal of Hydrology 161 (1994)91-108 Variably saturated modeling of transient drainage: sensitivity

    E-Print Network [OSTI]

    Clement, Prabhakar

    Journal of Hydrology ELSEVIER [1] Journal of Hydrology 161 (1994)91-108 Variably saturated modeling-1694(94)02509-A #12;92 W.R. Wise et al. / Journal of Hydrology 161 (1994) 91-108 transient unconfined flow through

  14. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology.Understanding how the hydrologic cycle is affected by climate, trees and plants, soils, geology, topography, springs, or any Figure 1. The hydrologic cycle, or water cycle (courtesy of the US Geological Survey

  15. Modeling of hydrologic conditions and solute movement in processed oil shale waste embankments under simulated climatic conditions

    SciTech Connect (OSTI)

    Reeves, T.L.; Turner, J.P.; Hasfurther, V.R.; Skinner, Q.D.

    1992-06-01T23:59:59.000Z

    The scope of this program is to study interacting hydrologic, geotechnical, and chemical factors affecting the behavior and disposal of combusted processed oil shale. The research combines bench-scale testing with large scale research sufficient to describe commercial scale embankment behavior. The large scale approach was accomplished by establishing five lysimeters, each 7.3 {times} 3.0 {times} 3.0 m deep, filled with processed oil shale that has been retorted and combusted by the Lurgi-Ruhrgas (Lurgi) process. Approximately 400 tons of Lurgi processed oil shale waste was provided by RBOSC to carry out this study. Research objectives were designed to evaluate hydrologic, geotechnical, and chemical properties and conditions which would affect the design and performance of large-scale embankments. The objectives of this research are: assess the unsaturated movement and redistribution of water and the development of potential saturated zones and drainage in disposed processed oil shale under natural and simulated climatic conditions; assess the unsaturated movement of solubles and major chemical constituents in disposed processed oil shale under natural and simulated climatic conditions; assess the physical and constitutive properties of the processed oil shale and determine potential changes in these properties caused by disposal and weathering by natural and simulated climatic conditions; assess the use of previously developed computer model(s) to describe the infiltration, unsaturated movement, redistribution, and drainage of water in disposed processed oil shale; evaluate the stability of field scale processed oil shale solid waste embankments using computer models.

  16. Modeling of hydrologic conditions and solute movement in processed oil shale waste embankments under simulated climatic conditions

    SciTech Connect (OSTI)

    Reeves, T.L.; Turner, J.P.; Hasfurther, V.R.; Skinner, Q.D.

    1992-06-01T23:59:59.000Z

    The scope of this program is to study interacting hydrologic, geotechnical, and chemical factors affecting the behavior and disposal of combusted processed oil shale. The research combines bench-scale testing with large scale research sufficient to describe commercial scale embankment behavior. The large scale approach was accomplished by establishing five lysimeters, each 7.3 [times] 3.0 [times] 3.0 m deep, filled with processed oil shale that has been retorted and combusted by the Lurgi-Ruhrgas (Lurgi) process. Approximately 400 tons of Lurgi processed oil shale waste was provided by RBOSC to carry out this study. Research objectives were designed to evaluate hydrologic, geotechnical, and chemical properties and conditions which would affect the design and performance of large-scale embankments. The objectives of this research are: assess the unsaturated movement and redistribution of water and the development of potential saturated zones and drainage in disposed processed oil shale under natural and simulated climatic conditions; assess the unsaturated movement of solubles and major chemical constituents in disposed processed oil shale under natural and simulated climatic conditions; assess the physical and constitutive properties of the processed oil shale and determine potential changes in these properties caused by disposal and weathering by natural and simulated climatic conditions; assess the use of previously developed computer model(s) to describe the infiltration, unsaturated movement, redistribution, and drainage of water in disposed processed oil shale; evaluate the stability of field scale processed oil shale solid waste embankments using computer models.

  17. Pressure test data reveal reservoir barriers/faults

    SciTech Connect (OSTI)

    Hurd, J.D.

    1984-07-30T23:59:59.000Z

    A review of transient pressure test data from an oil reservoir in Libya indicated not only the suspected fault barriers, but also the non-sealing portions of the faults. Extensive seismic data indicated much faulting, and directional trends had been interpreted to be generally northwest-southeast. The reservoir is a heterogeneous dolomite with average permeability of 40 to 50 md and contains neither natural fractures not stratification. Vertical displacement (throw) of each fault block is indicated to be within the range of the dolomite thickness, i.e., 40 to 180 ft. Therefore, when the fault throw is greater than reservoir thickness there is sealing, and when the throw is less than reservoir thickness the faults are non-sealing.

  18. Fibre bundle framework for unitary quantum fault tolerance

    E-Print Network [OSTI]

    Daniel Gottesman; Lucy Liuxuan Zhang

    2013-09-26T23:59:59.000Z

    We introduce a differential geometric framework for describing families of quantum error-correcting codes and for understanding quantum fault tolerance. This work unifies the notion of topological fault tolerance with fault tolerance in other kinds of quantum error-correcting codes. In particular, we use fibre bundles with a natural flat projective connection to study the transformation of codewords under unitary fault-tolerant evolutions. We show that the fault-tolerant logical operations are given by the monodromy group for either of two bundles, both of which have flat projective connections. As concrete realizations of the general framework, we construct the bundles explicitly for two examples of fault-tolerant families of operations, the qudit transversal gates and the string operators in the toric code.

  19. Similarity Matching Techniques for Fault Diagnosis in Automotive Infotainment Electronics

    E-Print Network [OSTI]

    Kabir, Mashud

    2009-01-01T23:59:59.000Z

    Fault diagnosis has become a very important area of research during the last decade due to the advancement of mechanical and electrical systems in industries. The automobile is a crucial field where fault diagnosis is given a special attention. Due to the increasing complexity and newly added features in vehicles, a comprehensive study has to be performed in order to achieve an appropriate diagnosis model. A diagnosis system is capable of identifying the faults of a system by investigating the observable effects (or symptoms). The system categorizes the fault into a diagnosis class and identifies a probable cause based on the supplied fault symptoms. Fault categorization and identification are done using similarity matching techniques. The development of diagnosis classes is done by making use of previous experience, knowledge or information within an application area. The necessary information used may come from several sources of knowledge, such as from system analysis. In this paper similarity matching tec...

  20. Investigation of the Meers fault in southwestern Oklahoma

    SciTech Connect (OSTI)

    Luza, K.V.; Madole, R.F.; Crone, A.J.

    1987-08-01T23:59:59.000Z

    The Meers fault is part of a major system of NW-trending faults that form the boundary between the Wichita Mountains and the Anadarko basin in southwestern Oklahoma. A portion of the Meers fault is exposed at the surface in northern Comanche County and strikes approximately N. 60/sup 0/ W. where it offsets Permian conglomerate and shale for at least 26 km. The scarp on the fault is consistently down to the south, with a maximum relief of 5 m near the center of the fault trace. Quaternary stratigraphic relationships and 10 /sup 14/C age dates constrain the age of the last movement of the Meers fault. The last movement postdates the Browns Creek Alluvium, late Pleistocene to early Holocene, and predates the East Cache Alluvium, 100 to 800 yr B.P. Fan alluvium, produced by the last fault movement, buried a soil that dates between 1400 and 1100 yr B.P. Two trenches excavated across the scarp near Canyon Creek document the near-surface deformation and provide some general information on recurrence. Trench 1 was excavated in the lower Holocene part of the Browns Creek Alluvium, and trench 2 was excavated in unnamed gravels thought to be upper Pleistocene. Flexing and warping was the dominant mode of deformation that produced the scarp. The stratigraphy in both trenches indicates one surface-faulting event, which implies a lengthy recurrence interval for surface faulting on this part of the fault. Organic-rich material from two samples that postdate the last fault movement yielded /sup 14/C ages between 1600 and 1300 yr B.P. These dates are in excellent agreement with the dates obtained from soils buried by the fault-related fan alluvium.

  1. A Turing Machine Resisting Isolated Bursts Of Faults

    E-Print Network [OSTI]

    Capuni, Ilir

    2012-01-01T23:59:59.000Z

    We consider computations of a Turing machine under noise that causes consecutive violations of the machine's transition function. Given a constant upper bound B on the size of bursts of faults, we construct a Turing machine M(B) subject to faults that can simulate any fault-free machine under the condition that bursts are not closer to each other than V for an appropriate V = O(B^2).

  2. artesian borehole, Singhida (central Tanzania) Hydrology, weather and groundwater

    E-Print Network [OSTI]

    Stevenson, Paul

    -WATCH Ensemble: WaterGAP · contemporaneous hindcast of subsurface runoff using the Global Hydrological Model WaterGAP does not ­ linear relationship plot prepared by Roz Price and Prof Martin Todd (USussex model (WaterGAP) is problematic Döll and Florke (2005) cited in AR4 · a further stumbling block

  3. Gravity Recovery And Climate Experiment Hydrology, Earth Science and Climate

    E-Print Network [OSTI]

    Mosegaard, Klaus

    · GRACE and Geophysics ­ 2004 Sumatra Earthquake · GRACE and Climate Change ­ East Greenland Melting ­ Observe changes with unprecidented accuracy GRACE can not discriminate between sources/causes Water: Atmosphere (Transport of water, pressure) Climate (Glaciers, Ice mass melting -> Run off) Hydrology

  4. Urban Hydrology: theory and new approaches for stormwater

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    management practices and strategies. "water is a precious resource, keep it here, clean it, save it for laterUrban Hydrology: theory and new approaches for stormwater management Jack Ahern, Professor Dept source(s), and infiltrating as much as possible into the soil through the implementation of best

  5. A method to hydrologically isolate water soluble wastes

    E-Print Network [OSTI]

    Rooney, Daniel James

    1995-01-01T23:59:59.000Z

    A natural cover system with gravel used as a capillary barrier was designed and evaluated as a method to hydrologically isolate buried water soluble oil and gas wastes. Simulated cover systems were installed in 200 liter barrels and tested in a...

  6. DIVISION S-3-NOTES HYDROLOGIC TRACER EFFECTS ON SOIL

    E-Print Network [OSTI]

    Gold, Art

    ,* ARTHUR J. GOLD, AND GALEN HOWARD Abstract While muchresearch has shown thatthecommonly used hydrologic such P.M. Groffman, Inst. of Ecosystem Studies, Box AB, Millbrook, NY 12545; A.J. Gold and G. Howard, Dep. Methods The soil used for these experiments is a Rainbow silt loam (coarse-loamy, mixed, mesic Aquic

  7. Feedbacks between hydrological heterogeneity and bioremediation induced biogeochemical transformations

    SciTech Connect (OSTI)

    Englert, A.; Hubbard, S.S.; Williams, K.H.; Li, L.; Steefel, C.I.

    2009-04-15T23:59:59.000Z

    For guiding optimal design and interpretation of in-situ treatments that strongly perturb subsurface systems, knowledge about the spatial and temporal patterns of mass transport and reaction intensities are important. Here, a procedure was developed and applied to time-lapse concentrations of a conservative tracer (bromide), an injected amendment (acetate) and reactive species (iron(II), uranium(VI) and sulfate) associated with two field scale biostimulation experiments, which were conducted successively at the same field location over two years. The procedure is based on a temporal moment analysis approach that relies on a streamtube approximation. The study shows that biostimulated reactions can be considerably influenced by subsurface hydrological and geochemical heterogeneities: the delivery of bromide and acetate and the intensity of the sulfate reduction is interpreted to be predominantly driven by the hydrological heterogeneity, while the intensity of the iron reduction is interpreted to be primarily controlled by the geochemical heterogeneity. The intensity of the uranium(VI) reduction appears to be impacted by both the hydrological and geochemical heterogeneity. Finally, the study documents the existence of feedbacks between hydrological heterogeneity and remediation-induced biogeochemical transformations at the field scale, particularly the development of precipitates that may cause clogging and flow rerouting.

  8. High-resolution, multi-scale modeling of watershed hydrology

    E-Print Network [OSTI]

    Vivoni, Enrique R.

    Enrique R. Vivoni An Opportunity to Integrate Remote Sensing Observations, Field Data Collection distribution of topography, rainfall, soils, vegetation, meteorology, soil moisture. Field Data and Remote's Hydrologic and Energetic System: Water and Heat Storages and Transports over Many Time and Space Scales P ET

  9. Soil property database: Southern Great Plains 1997 Hydrology Experiment

    E-Print Network [OSTI]

    Mohanty, Binayak P.

    measurement campaigns have been carried out concurrently with large-scale remote sensing hydrologic campaigns surface and the subsurface and the highly nonlinear nature of local-scale water and heat transport head, and unsaturated hydraulic conductivity) and the soil thermal properties (heat capacity, heat

  10. ERDC TN-EMRRP-EBA-8 Hydrologic Analyses for Stream

    E-Print Network [OSTI]

    US Army Corps of Engineers

    ERDC TN-EMRRP-EBA-8 March 2011 Hydrologic Analyses for Stream Restoration Design by J. Craig quantified element in stream restoration, working across and governing multiple disciplines and system, and management decisions to be made (Federal Interagency Stream Restoration Working Group (FISRWG) 1998). Figure

  11. Observational evidence of an intensifying hydrological cycle in northern Canada

    E-Print Network [OSTI]

    Dery, Stephen

    Observational evidence of an intensifying hydrological cycle in northern Canada Stephen J. De´ry,1 for 45 rivers spanning 5.2 � 106 km2 of northern Canada are investigated. Discharge averages 1153 km3 yr of northern Canada, excluding some rivers with outlets to the Labrador Sea and eastern James Bay

  12. Economic and Hydrologic Implications of Proposed Edwards Aquifer Management Plans

    E-Print Network [OSTI]

    Dillon, Carl R.; Jones, Lonnie L.; Williams, R. Lynn; Jordan, Wayne R.; McCarl, Bruce A.

    on water elevation in a reference well located in San Antonio. Four variants of the plans were analyzed using an annual economic/hydrologic simulation model of the aquifer. The model simulates water use by the agricultural, industrial and municipal sectors...

  13. Remote Sensing Data and Information for Hydrological Monitoring and Modeling

    E-Print Network [OSTI]

    Krakauer, Nir Y.

    1 Remote Sensing Data and Information for Hydrological Monitoring and Modeling Reza Khanbilvardi Springs, MD, USA 1 Introduction Remote sensing data and information are shown great potential in supplying measurements, remote sensing based measurements are spatially averages over the pixels can appropriate

  14. CRWR Online Report 1006 Hydrologic Analysis Before and After

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    as an integral part of the water management. As a result, the environmental condition in this reach has beenCRWR Online Report 1006 Hydrologic Analysis Before and After Reservoir Alteration Reservoir. Important habitats such as the Big Ben national and state park in the U.S. and Maderas del

  15. Groundwater and global hydrological change current challenges and new insight

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Groundwater and global hydrological change ­ current challenges and new insight R. TAYLOR1 , L Groundwater Resources Assessment Centre, Utrecht, The Netherlands 11 Federal Institute for Geosciences, groundwater plays a critical role in enabling communities to adapt to freshwater shortages derived from low

  16. Upper crustal faulting in an obliquely extending orogen, structural...

    Open Energy Info (EERE)

    faulting in an obliquely extending orogen, structural control on permeability and production in the Coso Geothermal Field, eastern California Jump to: navigation, search OpenEI...

  17. Active Fault Controls At High-Temperature Geothermal Sites- Prospectin...

    Open Energy Info (EERE)

    the level of unrecognized active faults present in these areas. Analysis of low-sun-angle aerial photography acquired over the Needle Rocks, Astor Pass, Empire, and Lee...

  18. Fault-tolerant distributed transactions for partitioned OLTP databases

    E-Print Network [OSTI]

    Jones, Evan P. C. (Evan Philip Charles), 1981-

    2012-01-01T23:59:59.000Z

    This thesis presents Dtxn, a fault-tolerant distributed transaction system designed specifically for building online transaction processing (OLTP) databases. Databases have traditionally been designed as general purpose ...

  19. atera fault central: Topics by E-print Network

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

    deformation and creep along the central section of the North Anatolian Fault (Turkey): InSAR observations Geosciences Websites Summary: Interseismic deformation and creep...

  20. Checksum-Based Fault Tolerance for LU Factorization

    E-Print Network [OSTI]

    Davies, Teresa

    2014-01-01T23:59:59.000Z

    study of failures in high-performance computing systems. InFault tolerant high performance computing by a codingfor large-scale high- performance computing. In 2012

  1. PV Arc Fault Detector Challenges Due to Module Frequency Response...

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

    This poster does not contain any proprietary or confidential information. Introduction PV system arc faults have led to a number of rooftop fires which have caused significant...

  2. Dating of major normal fault systems using thermochronology-...

    Open Energy Info (EERE)

    faults, timing of ductile mylonite formation and passage of rocks through the crystal-plastic to brittle transition, and multiple events of extensional unroofing. Here we...

  3. MICRO-SEISMICITY, FAULT STRUCTURE AND HYDRAULIC COMPARTMENTALIZATION...

    Open Energy Info (EERE)

    GETHERMAL FIELD, CALIFORNIA Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: MICRO-SEISMICITY, FAULT STRUCTURE AND HYDRAULIC...

  4. PHOTOVOLTAIC DC ARC FAULT DETECTOR TESTING AT SANDIA NATIONAL

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

    PHOTOVOLTAIC DC ARC FAULT DETECTOR TESTING AT SANDIA NATIONAL LABORATORIES Jay Johnson 1 , Birger Pahl 2 , Charles Luebke 2 , Tom Pier 2 , Theodore Miller 3 , Jason Strauch 1 ,...

  5. Fault tolerant Quantum Information Processing with Holographic control

    E-Print Network [OSTI]

    G. A. Paz-Silva; G. K. Brennen; J. Twamley

    2010-08-10T23:59:59.000Z

    We present a fault-tolerant semi-global control strategy for universal quantum computers. We show that N-dimensional array of qubits where only (N-1)-dimensional addressing resolution is available is compatible with fault-tolerant universal quantum computation. What is more, we show that measurements and individual control of qubits are required only at the boundaries of the fault-tolerant computer, i.e. holographic fault-tolerant quantum computation. Our model alleviates the heavy physical conditions on current qubit candidates imposed by addressability requirements and represents an option to improve their scalability.

  6. Fault Tolerant Evaluation of Continuous Selection Queries over Sensor Data

    E-Print Network [OSTI]

    Lazaridis, Iosif; Han, Qi; Mehrotra, Sharad; Venkatasubramanian, Nalini

    2009-01-01T23:59:59.000Z

    Evaluation of Continuous Selection Queries over Sensor Dataevaluation of continuous selection queries (CSQs) over sensor-sensor suffices and there is no Fault Tolerant Evaluation of

  7. Aksaray And Ecemis Faults - Diapiric Salt Relationships- Relevance...

    Open Energy Info (EERE)

    Aksaray And Ecemis Faults - Diapiric Salt Relationships- Relevance To The Hydrocarbon Exploration In The Tuz Golu (Salt Lake) Basin, Central Anatolia, Turkey Jump to: navigation,...

  8. Wrench faulting and cavity concentration ; Dollarhide Field, Andrews County, Texas

    E-Print Network [OSTI]

    Dygert, Todd Charles

    1992-01-01T23:59:59.000Z

    structure map for the Devonian horizon 20 7. Seismic time slice taken at 1010 ms 8. Seismic line 190 9. Seismic line 108 10. Seismic line 40 22 25 27 11. Cross-sectional view of a wrench fault 31 12. Pure shear fault model for strike- slip.... The Clearfork horizon was mapped first since it was shallow, strong and continuous. The faults and Devonian horizon were interpreted simultaneously, Adjacent lines were interpreted together throughout the survey to insure consistent fault and horizon picks...

  9. Fault simulation of combinational circuits based on critical path tracing

    E-Print Network [OSTI]

    Burnett, Charles James

    1992-01-01T23:59:59.000Z

    advantage of the computer's internal architecture and does not intelligently analyze the CUT. The deductive simulator traverses the good circuit to determine the value of each line. At the same time, every fault that causes a line to have a different... of the faults on a line within the circuit is detected for a given test vector, the line is marked as critical [10]. These faults that are detected are marked as covered. This very quickly gathers faults without direct simulation to the outputs, however...

  10. Effects of Volcanism, Crustal Thickness, and Large Scale Faulting...

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

    of Volcanism, Crustal Thickness, and Large Scale Faulting on the Development and Evolution of Geothermal Systems: Collaborative Project in Chile Effects of Volcanism, Crustal...

  11. automatic fault management: Topics by E-print Network

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

    Software Fault Diagnosis by Exploiting Application Signatures Xiaoning Ding - The Ohio - The Ohio State University ABSTRACT Application problem diagnosis in complex...

  12. automatic fault tree: Topics by E-print Network

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

    Software Fault Diagnosis by Exploiting Application Signatures Xiaoning Ding - The Ohio - The Ohio State University ABSTRACT Application problem diagnosis in complex...

  13. automatical adaptive fault: Topics by E-print Network

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

    Software Fault Diagnosis by Exploiting Application Signatures Xiaoning Ding - The Ohio - The Ohio State University ABSTRACT Application problem diagnosis in complex...

  14. Recent earthquake sequences at Coso: Evidence for conjugate faulting...

    Open Energy Info (EERE)

    of faulting along conjugate planes. We present results from analyzing an earthquake sequence occurring in 1998 and compare it with a similar sequence that occurred in 1996. The...

  15. Recurrent faulting and petroleum accumulation, Cat Creek Anticline, central Montana

    SciTech Connect (OSTI)

    Nelson, W.J. (Illinois State Geological Survey, Champaign (United States))

    1991-06-01T23:59:59.000Z

    The Cat Creek anticline, scene of central Montana's first significant oil discovery, is underlain by a south-dipping high-angle fault (Cat Creek fault) that has undergone several episodes of movement with opposite sense of displacement. Borehole data suggest that the Cat Creek fault originated as a normal fault during Proterozoic rifting concurrent with deposition of the Belt Supergroup. Reverse faulting took place in Late Cambrian time, and again near the end of the Devonian Period. The Devonian episode, coeval with the Antler orogeny, raised the southern block several hundred feet. The southern block remained high through Meramecian time, then began to subside. Post-Atokan, pre-Middle Jurassic normal faulting lowered the southern block as much as 1,500 ft. During the Laramide orogeny (latest Cretaceous-Eocene) the Cat Creek fault underwent as much as 4,000 ft of reverse displacement and a comparable amount of left-lateral displacement. The Cat Creek anticline is a fault-propagation fold; en echelon domes and listric normal faults developed along its crest in response to wrenching. Oil was generated mainly in organic-rich shales of the Heath Formation (upper Chesterian Series) and migrated upward along tectonic fractures into Pennsylvanian, Jurassic, and Cretaceous reservoir rocks in structural traps in en echelon domes. Production has been achieved only from those domes where structural closure was retained from Jurassic through Holocene time.

  16. Vadose Zone Hydrogeology Data Package for Hanford Assessments

    SciTech Connect (OSTI)

    Last, George V.; Freeman, Eugene J.; Cantrell, Kirk J.; Fayer, Michael J.; Gee, Glendon W.; Nichols, William E.; Bjornstad, Bruce N.; Horton, Duane G.

    2006-06-01T23:59:59.000Z

    This data package documents the technical basis for selecting physical and geochemical parameters and input values that will be used in vadose zone modeling for Hanford assessments. This work was originally conducted as part of the Characterization of Systems Task of the Groundwater Remediation Project managed by Fluor Hanford, Inc., Richland, Washington, and revised as part of the Characterization of Systems Project managed by the Pacific Northwest National Laboratory (PNNL) for the U.S. Department of Energy, Richland Operations Office (DOE-RL). This data package describes the geologic framework, the physical, hydrologic, and contaminant transport properties of the geologic materials, and deep drainage (i.e., recharge) estimates, and builds on the general framework developed for the initial assessment conducted using the System Assessment Capability (SAC) (Bryce et al. 2002). The general approach for this work was to update and provide incremental improvements over the previous SAC data package completed in 2001. As with the previous SAC data package, much of the data and interpreted information were extracted from existing documents and databases. Every attempt was made to provide traceability to the original source(s) of the data or interpretations.

  17. Regional seismic reflection line, southern Illinois Basin, provides new data on Cambrian rift geometry, Hicks Dome genesis, and the Fluorspar Area Fault Complex

    SciTech Connect (OSTI)

    Potter, C.J.; Goldhaber, M.B.; Taylor, C.D. (U.S. Geological Survey, Denver, CO (United States)); Heigold, P.C. (Illinois State Geological Survey, Champaign, IL (United States))

    1992-01-01T23:59:59.000Z

    Detailed studies of the subsurface structure of the Cambrian Reelfoot rift (RFR) in the Midwestern US provide important insights into continental rifting processes and into the structural fabric of a zone of modern intracratonic seismicity (New Madrid zone). High-quality oil industry seismic reflection data show that in the area of transition between the RFR and the Rough Creek Graben (RCG) the geometry of the Cambrian rift system is that of a half-graben that thickens to the southeast. This contrasts with the northward-thickening half-graben observed to the east in the RCG and with the more symmetric graben to the south in the RFR. An 82.8-km segment of a northwest-southeast seismic reflection profile in southeastern Illinois and western Kentucky shows that near Hicks Dome, Illinois, Middle and Lower Cambrian syn-rift sedimentary rocks occupy about 0.35 s (two-way travel time) on the seismic reflection section (corresponding to a thickness of about 970 m). This stratigraphic interval occupies about 0.45 s (1,250 m) near the Ohio river and is thickest against the Tabb Fault System (TFS) in Kentucky, where it occupies 0.7 s (1,940 m). The seismic data show that in this part of the Cambrian rift the master fault was part of the TFS and that normal displacement on the TFS continued through middle Paleozoic time. The seismic data also provide new information on the late Paleozoic development of Hicks-Dome and the surrounding Fluorspar Area Fault Complex (FAFC) in southeastern Illinois and western Kentucky. A series of grabens and horsts in the FAFC document a late Paleozoic reactivation of the RFR. Comparison of the reflection data with surface mineralization patterns shows that in most cases mineralized graben-bounding faults clearly cut basement or are splays from faults that cut basement.

  18. Impact of Geoengineering Schemes on the Global Hydrological Cycle

    SciTech Connect (OSTI)

    Bala, G; Duffy, P; Taylor, K

    2007-12-07T23:59:59.000Z

    The rapidly rising CO{sub 2} level in the atmosphere has led to proposals of climate stabilization via 'Geoengineering' schemes that would mitigate climate change by intentionally reducing the solar radiation incident on earth's surface. In this paper, we address the impact of these climate stabilization schemes on the global hydrological cycle, using equilibrium simulations from an atmospheric general circulation model coupled to a slab ocean model. We show that insolation reductions sufficient to offset global-scale temperature increases lead to a decrease in the intensity of the global hydrologic cycle. This occurs because solar forcing is more effective in driving changes in global mean evaporation than is CO{sub 2} forcing of a similar magnitude. In the model used here, the hydrologic sensitivity, defined as the percentage change in global mean precipitation per degree warming, is 2.4% for solar forcing, but only 1.5% for CO{sub 2} forcing. Although other models and the climate system itself may differ quantitatively from this result, the conclusion can be understood based on simple considerations of the surface energy budget and thus is likely to be robust. Compared to changing temperature by altering greenhouse gas concentrations, changing temperature by varying insolation results in larger changes in net radiative fluxes at the surface; these are compensated by larger changes in latent and sensible heat fluxes. Hence the hydrological cycle is more sensitive to temperature adjustment via changes in insolation than changes in greenhouse gases. This implies that an alteration in solar forcing might offset temperature changes or hydrological changes from greenhouse warming, but could not cancel both at once.

  19. Direct dating of Eocene reverse faulting in northeastern Tibet using Ar-dating of fault clays and low-temperature thermochronometry

    E-Print Network [OSTI]

    Direct dating of Eocene reverse faulting in northeastern Tibet using Ar-dating of fault clays fault of northeastern Tibet by dating several size fractions of fault gouge clay that represent variable Ma and continued until at least Middle Miocene time and that authigenic clay growth occurred

  20. Evaluation of faulting characteristics and ground acceleration associated with recent movement along the Meers Fault, Southwestern Oklahoma 

    E-Print Network [OSTI]

    Burrell, Richard Dennis

    1997-01-01T23:59:59.000Z

    Exposures. 14 Diagram illustrating the effects of the Meers Fault scarp on stream channel pathways. 16 Tors on the western side of Elk Mountain, 17 Tors in Wichita Mountains known as Twin Rocks . . . 10 Tor Analysis Log utilized during fteld... and the adjacent petroleum rich Anadarko Basin. Moody and Hill (1956) identified the presence of a scarp along a section of the Meers Fault which deforms Quaternary deposits during a study of wrench fault tectonics. However, it was not until further observations...

  1. Treanmission Line Fault Location using Interoperability and Integration of Data and Model 

    E-Print Network [OSTI]

    Dutta, Papiya

    2014-01-10T23:59:59.000Z

    , classify and locate transmission line faults using synchronous samples of voltages and currents captured during fault transients from both ends of the transmission line of interest. The method is tested for several faults simulated on IEEE 118 bus test...

  2. Fault tolerant control of homopolar magnetic bearings and circular sensor arrays 

    E-Print Network [OSTI]

    Li, Ming-Hsiu

    2006-04-12T23:59:59.000Z

    Fault tolerant control can accommodate the component faults in a control system such as sensors, actuators, plants, etc. This dissertation presents two fault tolerant control schemes to accommodate the failures of power ...

  3. A Comparison of Fault Detection Methods For a Transcritical Refrigeration System

    E-Print Network [OSTI]

    Janecke, Alex Karl

    2012-10-19T23:59:59.000Z

    pairings of four faults: over/undercharge, evaporator fouling, gas cooler fouling, and compressor valve leakage. This technique allows for low cost measurement and independent detection of individual faults even when multiple faults are present. Results...

  4. Early Holocene and Late Pleistocene slip rates of the southern Dead Sea Fault determined from 10

    E-Print Network [OSTI]

    Klinger, Yann

    sites located along the Wadi Araba Fault (WAF) segment of the Dead Sea Fault are targeted on the DSF, focusing on the Wadi Araba Fault (WAF) segment (Figure 1b). The WAF strikes N12°E for about 160

  5. Data-Based Monitoring and Fault-Tolerant Control of Nonlinear Processes

    E-Print Network [OSTI]

    Chilin, David

    2012-01-01T23:59:59.000Z

    with a fault in the heat input/removal actuator to vessel 2with a fault in the heat input/removal actuator to vessel 2with a fault in the heat input/removal actuator to vessel 2

  6. Hydrological application of the INCA model with varying spatial resolution and nitrogen dynamics in a northern river basin Hydrology and Earth System Sciences, 6(3), 339350 (2002) EGS

    E-Print Network [OSTI]

    Boyer, Edmond

    Hydrological application of the INCA model with varying spatial resolution and nitrogen dynamics in a northern river basin 339 Hydrology and Earth System Sciences, 6(3), 339­350 (2002) © EGS Hydrological ), this paper focuses on calibration of the hydrological part of the model and nitrogen (N) dynamics

  7. Great Salt Lake Basin Hydrologic Observatory Prospectus Submitted to CUAHSI for consideration as a CUAHSI Hydrologic Observatory

    E-Print Network [OSTI]

    Tarboton, David

    1 Great Salt Lake Basin Hydrologic Observatory Prospectus Submitted to CUAHSI for consideration.S., the Great Salt Lake Basin provides the opportunity to observe climate and human-induced land-surface changes relationship between people and water across the globe and make the Great Salt Lake Basin a microcosm

  8. Accommodation Zone | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindey Wind6:00-06:00About OpenEIAccionaAccommodation Zone Jump

  9. Improved extraction of hydrologic information from geophysical data through coupled hydrogeophysical inversion

    SciTech Connect (OSTI)

    Hinnell, A.C.; Ferre, T.P.A.; Vrugt, J.A.; Huisman, J.A.; Moysey, S.; Rings, J.; Kowalsky, M.B.

    2009-11-01T23:59:59.000Z

    There is increasing interest in the use of multiple measurement types, including indirect (geophysical) methods, to constrain hydrologic interpretations. To date, most examples integrating geophysical measurements in hydrology have followed a three-step, uncoupled inverse approach. This approach begins with independent geophysical inversion to infer the spatial and/or temporal distribution of a geophysical property (e.g. electrical conductivity). The geophysical property is then converted to a hydrologic property (e.g. water content) through a petrophysical relation. The inferred hydrologic property is then used either independently or together with direct hydrologic observations to constrain a hydrologic inversion. We present an alternative approach, coupled inversion, which relies on direct coupling of hydrologic models and geophysical models during inversion. We compare the abilities of coupled and uncoupled inversion using a synthetic example where surface-based electrical conductivity surveys are used to monitor one-dimensional infiltration and redistribution.

  10. Research on Fault Analysis and Fault-Tolerant Control of EV/HEV Powertrain

    E-Print Network [OSTI]

    Brest, Université de

    power industries, interests in diagnostics and fault-tolerant control of nuclear power plants have been industrial systems. To achieve these goals, monitoring and supervision are embedded in the electrical energy, FTC has been implemented in sensible applications such as aerospace, nuclear power, automotive

  11. Efficient Fault Tolerance: an Approach to Deal with Transient Faults in Multiprocessor Architectures

    E-Print Network [OSTI]

    Firenze, UniversitĂ  degli Studi di

    , 36, 56126 Pisa, Italy ** IEI/CNR, Via S. Maria, 46, 56126 Pisa, Italy Abstract Dynamic error, while making efficient use of the available resources. To this end, dynamic error processing must is integrated with a mechanism for dynamic error processing in a complete fault tolerance strategy. Reliability

  12. Getting the right answers for the right reasons: linking measurements, analyses, and models to advance the science of hydrology

    E-Print Network [OSTI]

    Kirchner, James W.

    to advance the science of hydrology James W. Kirchner, Department of Earth and Planetary Science, University of California, Berkeley, CA 94720 U.S.A. The day-to-day business of hydrology has largely been shaped the science of hydrology, as opposed to the operational practice of hydrology -- that is, to improve our

  13. Hydrology and Geostatistics of a Vermont, USA Kettlehole Peatland

    E-Print Network [OSTI]

    Gotelli, Nicholas J.

    months and by evapotranspiration and pond water elevation during summer and fall months. Hydraulic head in zones where the peatland was perched above regional groundwater and smaller in zones where a hydraulic-802-656-2922. DTD 5 ARTICLE IN PRESS #12;1. Introduction Long overlooked for their ecological and societal

  14. A core-based assessment of the spatial relationship of small faults associated with a basement-controlled, large normal fault in the Hickory Sandstone

    E-Print Network [OSTI]

    Graff, Mitchell C

    2006-10-30T23:59:59.000Z

    Measures of Small Faults??????????????? Page iii v vi viii xiv 1 3 3 5 7 10 10 10 12 14 18 20 26 28 vii 4. ESTIMATING SMALL FAULT DISPLACEMENT USING FAULT GOUGE THICKNESS AND PROTOLITH TEXTURE??????????... 4.1 Previous Work... is proportional to mean?????????????????????. 26 Combined scatterplot of faults with known gouge thickness versus known displacement and faults with known gouge thickness versus estimated displacement????????????????????. Page 37 38 39 40 43 45 47 48...

  15. LA-UR-00-949 Perched Zone Monitoring Well 1995 Analytical Water Quality and Hydrology Group, ESH-18

    E-Print Network [OSTI]

    is not universal, however, as examination of the data shows that lead levels in 1990 well MCO-7A are double those in the older MCO-7. Barium concentrations are apparently higher in the new wells. The higher barium values and the larger differences between barium concentrations in well pairs occur in Mortandad Canyon, in wells MCO-6

  16. Fault Analysis at a Wind Power Plant for One Year of Observation: Preprint

    SciTech Connect (OSTI)

    Muljadi, E.; Mills, Z.; Foster, R.; Conto, J.; Ellis, A.

    2008-07-01T23:59:59.000Z

    This paper analyzes the fault characteristics observed at a wind power plant, and the behavior of the wind power plant under fault events.

  17. SciTech Connect: Development of Asset Fault Signatures for Prognostic...

    Office of Scientific and Technical Information (OSTI)

    Development of Asset Fault Signatures for Prognostic and Health Management in the Nuclear Industry Citation Details In-Document Search Title: Development of Asset Fault Signatures...

  18. Research project on CO2 geological storage and groundwaterresources: Large-scale hydrological evaluation and modeling of impact ongroundwater systems

    SciTech Connect (OSTI)

    Birkholzer, Jens; Zhou, Quanlin; Rutqvist, Jonny; Jordan,Preston; Zhang,K.; Tsang, Chin-Fu

    2007-10-24T23:59:59.000Z

    If carbon dioxide capture and storage (CCS) technologies areimplemented on a large scale, the amounts of CO2 injected and sequesteredunderground could be extremely large. The stored CO2 then replaces largevolumes of native brine, which can cause considerable pressureperturbation and brine migration in the deep saline formations. Ifhydraulically communicating, either directly via updipping formations orthrough interlayer pathways such as faults or imperfect seals, theseperturbations may impact shallow groundwater or even surface waterresources used for domestic or commercial water supply. Possibleenvironmental concerns include changes in pressure and water table,changes in discharge and recharge zones, as well as changes in waterquality. In compartmentalized formations, issues related to large-scalepressure buildup and brine displacement may also cause storage capacityproblems, because significant pressure buildup can be produced. Toaddress these issues, a three-year research project was initiated inOctober 2006, the first part of which is summarized in this annualreport.

  19. Automatic Fault Characterization via Abnormality-Enhanced Classification

    SciTech Connect (OSTI)

    Bronevetsky, G; Laguna, I; de Supinski, B R

    2010-12-20T23:59:59.000Z

    Enterprise and high-performance computing systems are growing extremely large and complex, employing hundreds to hundreds of thousands of processors and software/hardware stacks built by many people across many organizations. As the growing scale of these machines increases the frequency of faults, system complexity makes these faults difficult to detect and to diagnose. Current system management techniques, which focus primarily on efficient data access and query mechanisms, require system administrators to examine the behavior of various system services manually. Growing system complexity is making this manual process unmanageable: administrators require more effective management tools that can detect faults and help to identify their root causes. System administrators need timely notification when a fault is manifested that includes the type of fault, the time period in which it occurred and the processor on which it originated. Statistical modeling approaches can accurately characterize system behavior. However, the complex effects of system faults make these tools difficult to apply effectively. This paper investigates the application of classification and clustering algorithms to fault detection and characterization. We show experimentally that naively applying these methods achieves poor accuracy. Further, we design novel techniques that combine classification algorithms with information on the abnormality of application behavior to improve detection and characterization accuracy. Our experiments demonstrate that these techniques can detect and characterize faults with 65% accuracy, compared to just 5% accuracy for naive approaches.

  20. An Information Flow Model of Fault Detection Margaret C. Thompson ?

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    not be practical. Nonethe­ less, Relay provides insight into testing and fault de­ tection and suggests an approach and Computer Science Amherst, MA 01003 University of California Irvine, CA 92717 Abstract Relay is a model of how a fault causes a failure on execution of some test datum. This process begins with introduction