National Library of Energy BETA

Sample records for active seismic methods

  1. Method of migrating seismic records

    DOE Patents [OSTI]

    Ober, Curtis C. (Las Lunas, NM); Romero, Louis A. (Albuquerque, NM); Ghiglia, Dennis C. (Longmont, CO)

    2000-01-01

    The present invention provides a method of migrating seismic records that retains the information in the seismic records and allows migration with significant reductions in computing cost. The present invention comprises phase encoding seismic records and combining the encoded seismic records before migration. Phase encoding can minimize the effect of unwanted cross terms while still allowing significant reductions in the cost to migrate a number of seismic records.

  2. Seismic ray method: Recent developments Vlastislav

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    of seismology and seismic exploration for oil. This article outlines the basic features of the seismic raySeismic ray method: Recent developments Vlastislav #20; Cerven#19;y, Lud#20;ek Klime#20;s;#16; II 1401, 141 31 Praha 4, Czech Republic, E-mail: ip@ig.cas.cz Abstract The seismic ray method has

  3. Non-Linear Seismic Soil Structure Interaction (SSI) Method for...

    Office of Environmental Management (EM)

    Non-Linear Seismic Soil Structure Interaction (SSI) Method for Developing Non-Linear Seismic SSI Analysis Techniques Non-Linear Seismic Soil Structure Interaction (SSI) Method for...

  4. DISPLACEMENT BASED SEISMIC DESIGN METHODS.

    SciTech Connect (OSTI)

    HOFMAYER,C.MILLER,C.WANG,Y.COSTELLO,J.

    2003-07-15

    A research effort was undertaken to determine the need for any changes to USNRC's seismic regulatory practice to reflect the move, in the earthquake engineering community, toward using expected displacement rather than force (or stress) as the basis for assessing design adequacy. The research explored the extent to which displacement based seismic design methods, such as given in FEMA 273, could be useful for reviewing nuclear power stations. Two structures common to nuclear power plants were chosen to compare the results of the analysis models used. The first structure is a four-story frame structure with shear walls providing the primary lateral load system, referred herein as the shear wall model. The second structure is the turbine building of the Diablo Canyon nuclear power plant. The models were analyzed using both displacement based (pushover) analysis and nonlinear dynamic analysis. In addition, for the shear wall model an elastic analysis with ductility factors applied was also performed. The objectives of the work were to compare the results between the analyses, and to develop insights regarding the work that would be needed before the displacement based analysis methodology could be considered applicable to facilities licensed by the NRC. A summary of the research results, which were published in NUREGICR-6719 in July 2001, is presented in this paper.

  5. Assessment of seismic margin calculation methods

    SciTech Connect (OSTI)

    Kennedy, R.P.; Murray, R.C.; Ravindra, M.K.; Reed, J.W.; Stevenson, J.D.

    1989-03-01

    Seismic margin review of nuclear power plants requires that the High Confidence of Low Probability of Failure (HCLPF) capacity be calculated for certain components. The candidate methods for calculating the HCLPF capacity as recommended by the Expert Panel on Quantification of Seismic Margins are the Conservative Deterministic Failure Margin (CDFM) method and the Fragility Analysis (FA) method. The present study evaluated these two methods using some representative components in order to provide further guidance in conducting seismic margin reviews. It is concluded that either of the two methods could be used for calculating HCLPF capacities. 21 refs., 9 figs., 6 tabs.

  6. The evolution of shallow seismic exploration methods

    E-Print Network [OSTI]

    Steeples, Don W.; Schmeissner, Chris M.; Macy, Brian

    1995-07-01

    Near-surface seismic methods have developed considerably and have been applied much more widely since the 1970s. Improvements in instrumentation, along with cheaper computer power, have greatly affected the capabilities of these methods in recent...

  7. Forecasting Seismic Signatures of Stellar Magnetic Activity

    E-Print Network [OSTI]

    W. A. Dziembowski

    2007-09-17

    For the Sun, a tight correlation between various activity measures and oscillation frequencies is well documented. For other stars, we have abundant data on magnetic activity and its changes but not yet on its seismic signature. A prediction of the activity induced frequency changes in stars based on scaling the solar relations is presented. This seismic signature of the activity should be measurable in the data expected within few years.

  8. Seismic Activity of the Earth, the Cosmological Vectorial Potential And Method of a Short-term Earthquakes Forecasting

    E-Print Network [OSTI]

    Yu. A. Baurov; Yu. A. Baurov; Yu. A. Baurov Jr.; A. A. Spitalnaya; A. A. Abramyan; V. A. Solodovnikov

    2008-08-20

    To the foundation of a principally new short-term forecasting method there has been laid down a theory of surrounding us world's creation and of physical vacuum as a result of interaction of byuons - discrete objects. The definition of the byuon contains the cosmological vector-potential A_g - a novel fundamental vector constant. This theory predicts a new anisotropic interaction of nature objects with the physical vacuum. A peculiar "tap" to gain new energy (giving rise to an earthquake) are elementary particles because their masses are proportional to the modulus of some summary potential A_sum that contains potentials of all known fields. The value of A_sum cannot be larger than the modulus of A_g. In accordance with the experimental results a new force associated with A_sum ejects substance from the area of the weakened A_sum along a conical formation with the opening of 100 +- 10 and the axis directed along the vector A_sum. This vector has the following coordinates in the second equatorial coordinate system: right ascension alpha = 293 +- 10, declination delta = 36 +- 10. Nearly 100% probability of an earthquake (earthquakes of 6 points strong and more by the Richter scale) arises when in the process of the earth rotation the zenith vector of a seismically dangerous region and/or the vectorial potential of Earth's magnetic fields are in a certain way oriented relative to the vector A_g. In the work, basic models and standard mechanisms of earthquakes are briefly considered, results of processing of information on the earthquakes in the context of global spatial anisotropy caused by the existence of the vector A_g, are presented, and an analysis of them is given.

  9. 3-D Seismic Methods For Geothermal Reservoir Exploration And...

    Open Energy Info (EERE)

    3-D Seismic Methods For Geothermal Reservoir Exploration And Assessment-Summary Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: 3-D Seismic Methods For...

  10. Method for processing seismic data to identify anomalous absorption zones

    DOE Patents [OSTI]

    Taner, M. Turhan

    2006-01-03

    A method is disclosed for identifying zones anomalously absorptive of seismic energy. The method includes jointly time-frequency decomposing seismic traces, low frequency bandpass filtering the decomposed traces to determine a general trend of mean frequency and bandwidth of the seismic traces, and high frequency bandpass filtering the decomposed traces to determine local variations in the mean frequency and bandwidth of the seismic traces. Anomalous zones are determined where there is difference between the general trend and the local variations.

  11. Non-Linear Seismic Soil Structure Interaction (SSI) Method for Developing Non-Linear Seismic SSI Analysis Techniques

    Office of Energy Efficiency and Renewable Energy (EERE)

    Non-Linear Seismic Soil Structure Interaction (SSI) Method for Developing Non-Linear Seismic SSI Analysis Techniques Justin Coleman, P.E. October 25th, 2011

  12. Methods for Bayesian inversion of seismic data

    E-Print Network [OSTI]

    Walker, Matthew James

    2015-06-30

    The purpose of Bayesian seismic inversion is to combine information derived from seismic data and prior geological knowledge to determine a posterior probability distribution over parameters describing the elastic and ...

  13. Seismic methods for resource exploration in enhanced geothermal systems

    E-Print Network [OSTI]

    Gritto, Roland; Majer, Ernest L.

    2002-01-01

    Seismic Methods for Resource Exploration in Enhancedseismic wave interactions with discrete, finite length fractures, Proceedings Seventy- Second Annual Meeting, Society of Exploration

  14. Development Of Active Seismic Vector-Wavefield Imaging Technology...

    Open Energy Info (EERE)

    Development Of Active Seismic Vector-Wavefield Imaging Technology For Geothermal Applications Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Development...

  15. An active seismic reconnaissance survey of the Mount Princeton...

    Open Energy Info (EERE)

    An active seismic reconnaissance survey of the Mount Princeton area, Chaffee County, Colorado Jump to: navigation, search OpenEI Reference LibraryAdd to library Thesis: An active...

  16. 3-D Seismic Methods for Geothermal Reservoir Exploration and Assessment--Summary

    E-Print Network [OSTI]

    Majer, E.L.

    2003-01-01

    borehole methods developed in the petroleum industry the limitation for geothermaland borehole seismic methods (Vertical Seismic Profiling (VSP), Crosswell and Single Well) to locate and quantify geothermal

  17. Develpment of a low Cost Method to Estimate the Seismic Signiture...

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

    Cost Method to Estimate the Seismic Signiture of a Geothemal Field from Ambient Seismic Noise Analysis Develpment of a low Cost Method to Estimate the Seismic Signiture of a...

  18. Mapping bedrock beneath glacial till using CDP seismic reflection methods

    E-Print Network [OSTI]

    Keiswetter, Dean; Black, Ross A.; Steeples, Don W.

    1994-03-01

    This paper is a case history demonstrating the applicability of the common depth point (CDP) seismic reflection method to image bedrock beneath glacial till in northwestern Iowa. Reflections from the base of the 40-m thick ...

  19. Method for determining formation quality factor from seismic data

    DOE Patents [OSTI]

    Taner, M. Turhan; Treitel, Sven

    2005-08-16

    A method is disclosed for calculating the quality factor Q from a seismic data trace. The method includes calculating a first and a second minimum phase inverse wavelet at a first and a second time interval along the seismic data trace, synthetically dividing the first wavelet by the second wavelet, Fourier transforming the result of the synthetic division, calculating the logarithm of this quotient of Fourier transforms and determining the slope of a best fit line to the logarithm of the quotient.

  20. Optical seismic sensor systems and methods

    DOE Patents [OSTI]

    Beal, A. Craig; Cummings, Malcolm E.; Zavriyev, Anton; Christensen, Caleb A.; Lee, Keun

    2015-12-08

    Disclosed is an optical seismic sensor system for measuring seismic events in a geological formation, including a surface unit for generating and processing an optical signal, and a sensor device optically connected to the surface unit for receiving the optical signal over an optical conduit. The sensor device includes at least one sensor head for sensing a seismic disturbance from at least one direction during a deployment of the sensor device within a borehole of the geological formation. The sensor head includes a frame and a reference mass attached to the frame via at least one flexure, such that movement of the reference mass relative to the frame is constrained to a single predetermined path.

  1. 3-D Seismic Methods for Geothermal Reservoir Exploration and Assessment--Summary

    E-Print Network [OSTI]

    Majer, E.L.

    2003-01-01

    3-D Seismic Methods For Geothermal Reservoir Exploration andseismic imaging which will increase the efficiency of explorationexploration and are early drilling 1. Surface studies (a) Reflection seismic.

  2. Reversible rigid coupling apparatus and method for borehole seismic transducers

    DOE Patents [OSTI]

    Owen, Thomas E. (Helotes, TX); Parra, Jorge O. (Helotes, TX)

    1992-01-01

    An apparatus and method of high resolution reverse vertical seismic profile (VSP) measurements is shown. By encapsulating the seismic detector and heaters in a meltable substance (such as wax), the seismic detector can be removably secured in a borehole in a manner capable of measuring high resolution signals in the 100 to 1000 hertz range and higher. The meltable substance is selected to match the overall density of the detector package with the underground formation, yet still have relatively low melting point and rigid enough to transmit vibrations to accelerometers in the seismic detector. To minimize voids in the meltable substance upon solidification, the meltable substance is selected for minimum shrinkage, yet still having the other desirable characteristics. Heaters are arranged in the meltable substance in such a manner to allow the lowermost portion of the meltable substance to cool and solidify first. Solidification continues upwards from bottom-to-top until the top of the meltable substance is solidified and the seismic detector is ready for use. To remove, the heaters melt the meltable substance and the detector package is pulled from the borehole.

  3. Methods for use in detecting seismic waves in a borehole

    DOE Patents [OSTI]

    West, Phillip B.; Fincke, James R.; Reed, Teddy R.

    2007-02-20

    The invention provides methods and apparatus for detecting seismic waves propagating through a subterranean formation surrounding a borehole. In a first embodiment, a sensor module uses the rotation of bogey wheels to extend and retract a sensor package for selective contact and magnetic coupling to casing lining the borehole. In a second embodiment, a sensor module is magnetically coupled to the casing wall during its travel and dragged therealong while maintaining contact therewith. In a third embodiment, a sensor module is interfaced with the borehole environment to detect seismic waves using coupling through liquid in the borehole. Two or more of the above embodiments may be combined within a single sensor array to provide a resulting seismic survey combining the optimum of the outputs of each embodiment into a single data set.

  4. Active Seismic BENDIX SYSTEMS DIVISION ANN A R8 0 R, M I CH NO.

    E-Print Network [OSTI]

    Rathbun, Julie A.

    Active Seismic ,'1~ y · ~net'¥· BENDIX SYSTEMS DIVISION ANN A R8 0 R, M I CH NO. ATM-463 REV in the word format of the Active Seismic Experiment. It also serves to document Action Item B6-0805-5B, which and compares three different word formats for the Active Seismic Experiment. These are designated Present DE

  5. BENDIX SYSTEMS DIVISION ANN ARIOR,MICH NO. ATM-Active Seismic Frame

    E-Print Network [OSTI]

    Rathbun, Julie A.

    BENDIX SYSTEMS DIVISION ANN ARIOR,MICH NO. ATM- 444 REV.NO. Active Seismic Frame Synchronization SYSTEMS DIVISION ANN ARIOR,MICH NOATM- 444 Active Seismic Frame Synchronization PAGE 2 REV.NO. OF 5 seismic mode of operation, maintaining this high density of sync bits to data bits is not feasible

  6. Spatial Resolution for Processing Seismic Data: Type-2 Methods for Finding the Relevant Granular Structure

    E-Print Network [OSTI]

    Kreinovich, Vladik

    Spatial Resolution for Processing Seismic Data: Type-2 Methods for Finding the Relevant Granular. NEED TO FIND GRANULARITY (SPATIAL RESOLUTION) OF THE RESULTS OF SEISMIC DATA PROCESSING In evaluations--One of the main methods of determining the Earth structure is the analysis of the seismic data. Based

  7. Supporting On-line Material (SOM) 1 Impact-Induced Seismic Activity on Asteroid 433 Eros

    E-Print Network [OSTI]

    Richardson Jr., James E.

    Supporting On-line Material (SOM) 1 Impact-Induced Seismic Activity on Asteroid 433 Eros: A Surface Modification Process James E. Richardson*, H. Jay Melosh*, & Richard Greenberg* *Lunar and Planetary Laboratory 1: Seismic energy balance derivation

  8. Ray methods in the modelling of seismic wave fields Ivan Psenc'ik

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    and in the solution of forward and inverse problems of seismology and seismic exploration for oil. This contributionRay methods in the modelling of seismic wave fields Ivan PŸsenŸc'ik Academy of Sciences, BoŸcn'i II@seis.karlov.mff.cuni.cz Abstract Seismic ray method has broad applications in the numerical modelling of seismic wave fields

  9. Studies of the Correlation Between Ionospheric Anomalies and Seismic Activities in the Indian Subcontinent

    SciTech Connect (OSTI)

    Sasmal, S. [Indian Centre for Space Physics, 43 Chalantika, Garia Station Road, Kolkata-700084 (India); Chakrabarti, S. K. [Indian Centre for Space Physics, 43 Chalantika, Garia Station Road, Kolkata-700084 (India); S. N. Bose National Centre for Basic Sciences, JD Block, Salt-Lake Kolkata-70098 (India); Chakrabarti, S. [Indian Centre for Space Physics, 43 Chalantika, Garia Station Road, Kolkata-700084 (India); Maharaja Manindra Chandra College, 20, Ramkanta Bose Street, Kolkata-700003 (India)

    2010-10-20

    The VLF (Very Low Frequency) signals are long thought to give away important information about the Lithosphere-Ionosphere coupling. It is recently established that the ionosphere may be perturbed due to seismic activities. The effects of this perturbation can be detected through the VLF wave amplitude. There are several methods to find this correlations and these methods can be used for the prediction of these seismic events. In this paper, first we present a brief history of the use of VLF propagation method for the study of seismo-ionospheric correlations. Then we present different methods proposed by us to find out the seismo-ionospheric correlations. At the Indian Centre for Space Physics, Kolkata we have been monitoring the VTX station at Vijayanarayanam from 2002. In the initial stage, we received 17 kHz signal and latter we received 18.2 kHz signal. In this paper, first we present the results for the 17 kHz signal during Sumatra earthquake in 2004 obtained from the terminator time analysis method. Then we present much detailed and statistical analysis using some new methods and present the results for 18.2 kHz signal. In order to establish the correlation between the ionospheric activities and the earthquakes, we need to understand what are the reference signals throughout the year. We present the result of the sunrise and sunset terminators for the 18.2 kHz signal as a function of the day of the year for a period of four years, viz, 2005 to 2008 when the solar activity was very low. In this case, the signal would primarily be affected by the Sun due to normal sunrise and sunset effects. Any deviation from this standardized calibration curve would point to influences by terrestrial (such as earthquakes) and extra-terrestrial (such as solar activities and other high energy phenomena). We present examples of deviations which occur in a period of sixteen months and show that the correlations with seismic events is significant and typically the highest deviation in terminator shift takes place up to a couple of days prior to the seismic event. We introduce a new method where we find the effects of the seismic activities on D-layer preparation time (DLPT) and the D-layer disappearance time (DLDT). We identify those days in which DLPT and DLDT exhibit deviations from the average value and we correlate those days with seismic events. Separately, we compute the energy release by the earthquakes and using this, we compute the total energy released locally from distant earthquakes and find correlations of the deviations with them. In this case also we find pre-cursors a few days before the seismic events. In a third approach, we consider the nighttime fluctuation method (differently quantified than the conventional way). We analyzed the nighttime data for the year 2007 to check the correlation between the night time fluctuation of the signal amplitude and the seismic events. Using the statistical method for all the events of the year and for the individual individual earthquakes (Magnitude > 5) we found that the night time signal amplitude becomes very high on three days prior to the seismic events.

  10. State of Seismic Methods For Geothermal Reservoir Exploration and Assessment

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding access toSmallTechnicalSheldon Glashow and-D Seismic Methods For

  11. Ray methods in the modelling of seismic wave elds Ivan P sen c k , Petr Bulant , Vlastislav

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    and in the solution of forward and inverse problems of seismology and seismic exploration for oil. This contributionRay methods in the modelling of seismic wave #12;elds Ivan P#20;sen#20;c#19;#16;k #3; , Petr Bulant.cz Abstract Seismic ray method has broad applications in the numerical modelling of seismic wave #12;elds

  12. ADVANCED SEISMIC BASE ISOLATION METHODS FOR MODULAR REACTORS

    SciTech Connect (OSTI)

    E. Blanford; E. Keldrauk; M. Laufer; M. Mieler; J. Wei; B. Stojadinovic; P.F. Peterson

    2010-09-20

    Advanced technologies for structural design and construction have the potential for major impact not only on nuclear power plant construction time and cost, but also on the design process and on the safety, security and reliability of next generation of nuclear power plants. In future Generation IV (Gen IV) reactors, structural and seismic design should be much more closely integrated with the design of nuclear and industrial safety systems, physical security systems, and international safeguards systems. Overall reliability will be increased, through the use of replaceable and modular equipment, and through design to facilitate on-line monitoring, in-service inspection, maintenance, replacement, and decommissioning. Economics will also receive high design priority, through integrated engineering efforts to optimize building arrangements to minimize building heights and footprints. Finally, the licensing approach will be transformed by becoming increasingly performance based and technology neutral, using best-estimate simulation methods with uncertainty and margin quantification. In this context, two structural engineering technologies, seismic base isolation and modular steel-plate/concrete composite structural walls, are investigated. These technologies have major potential to (1) enable standardized reactor designs to be deployed across a wider range of sites, (2) reduce the impact of uncertainties related to site-specific seismic conditions, and (3) alleviate reactor equipment qualification requirements. For Gen IV reactors the potential for deliberate crashes of large aircraft must also be considered in design. This report concludes that base-isolated structures should be decoupled from the reactor external event exclusion system. As an example, a scoping analysis is performed for a rectangular, decoupled external event shell designed as a grillage. This report also reviews modular construction technology, particularly steel-plate/concrete construction using factory prefabricated structural modules, for application to external event shell and base isolated structures.

  13. Active Seismic Methods | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAand DaltonSolar Energy LLC Jump to: navigation,EnergyAcruxOpenPower

  14. Seismic methods for resource exploration in enhanced geothermal systems

    E-Print Network [OSTI]

    Gritto, Roland; Majer, Ernest L.

    2002-01-01

    density) from borehole experiments in the geothermal area.to-borehole seismic studies at the Rye Patch geothermalfrom previous borehole studies at the Rye Patch geothermal

  15. Non-linear Seismic Soil Structure Interaction Method for Developing...

    Office of Environmental Management (EM)

    techniques * "EFFECT ON NON-LINEAR SOIL- STRUCTURE INTERACTION DUE TO BASE SLAB UPLIFT ON THE SEISMIC RESPONSE OF A HIGH- TEMPERATURE GAS-COOLED REACTOR (HTGR)" Kennedy,...

  16. A robust absorbing layer method for anisotropic seismic wave modeling

    SciTech Connect (OSTI)

    Mtivier, L.; Brossier, R.; Labb, S.; Operto, S.; Virieux, J.

    2014-12-15

    When applied to wave propagation modeling in anisotropic media, Perfectly Matched Layers (PML) exhibit instabilities. Incoming waves are amplified instead of being absorbed. Overcoming this difficulty is crucial as in many seismic imaging applications, accounting accurately for the subsurface anisotropy is mandatory. In this study, we present the SMART layer method as an alternative to PML approach. This method is based on the decomposition of the wavefield into components propagating inward and outward the domain of interest. Only outgoing components are damped. We show that for elastic and acoustic wave propagation in Transverse Isotropic media, the SMART layer is unconditionally dissipative: no amplification of the wavefield is possible. The SMART layers are not perfectly matched, therefore less accurate than conventional PML. However, a reasonable increase of the layer size yields an accuracy similar to PML. Finally, we illustrate that the selective damping strategy on which is based the SMART method can prevent the generation of spurious S-waves by embedding the source in a small zone where only S-waves are damped.

  17. RESEARCH PAPER1 2 Accelerating the discontinuous Galerkin method for seismic wave

    E-Print Network [OSTI]

    Wang, Liqiang

    REVISED PROOF RESEARCH PAPER1 2 Accelerating the discontinuous Galerkin method for seismic wave 3 is NVIDIA Tesla C2070 Fermi, 16 and the CPU used is Intel Xeon W5660. To effectively 17 overlap inter-process codes shows favorable strong and weak scalabilities. 29 30 Keywords Seismic wave propagation

  18. Stochastic and Deterministic Inversion Methods for History Matching of Production and Time-Lapse Seismic Data

    E-Print Network [OSTI]

    Watanabe, Shingo

    2013-08-26

    -based inversion methods as a deterministic approach for integrating both production and time-lapse seismic data into high resolution reservoir models. For the ensemble Kalman filter, we develope a physically motivated phase streamline-based covariance...

  19. A robust method for fracture orientation and density detection from seismic scattered energy

    E-Print Network [OSTI]

    Fang, Xinding

    2011-01-01

    The measurements of fracture parameters, such as fracture orientation, fracture density and fracture compliance, in a reservoir is very important for field development and exploration. Traditional seismic methods for ...

  20. SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES

    E-Print Network [OSTI]

    SERIES SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES COMMISSION;SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES LNEC/NESDE Main activities Seismic action characterization studies, seismic hazard and seismic risk Seismic assessment of structures

  1. Advancing New 3D Seismic Interpretation Methods for Exploration and Development of Fractured Tight Gas Reservoirs

    SciTech Connect (OSTI)

    James Reeves

    2005-01-31

    In a study funded by the U.S. Department of Energy and GeoSpectrum, Inc., new P-wave 3D seismic interpretation methods to characterize fractured gas reservoirs are developed. A data driven exploratory approach is used to determine empirical relationships for reservoir properties. Fractures are predicted using seismic lineament mapping through a series of horizon and time slices in the reservoir zone. A seismic lineament is a linear feature seen in a slice through the seismic volume that has negligible vertical offset. We interpret that in regions of high seismic lineament density there is a greater likelihood of fractured reservoir. Seismic AVO attributes are developed to map brittle reservoir rock (low clay) and gas content. Brittle rocks are interpreted to be more fractured when seismic lineaments are present. The most important attribute developed in this study is the gas sensitive phase gradient (a new AVO attribute), as reservoir fractures may provide a plumbing system for both water and gas. Success is obtained when economic gas and oil discoveries are found. In a gas field previously plagued with poor drilling results, four new wells were spotted using the new methodology and recently drilled. The wells have estimated best of 12-months production indicators of 2106, 1652, 941, and 227 MCFGPD. The latter well was drilled in a region of swarming seismic lineaments but has poor gas sensitive phase gradient (AVO) and clay volume attributes. GeoSpectrum advised the unit operators that this location did not appear to have significant Lower Dakota gas before the well was drilled. The other three wells are considered good wells in this part of the basin and among the best wells in the area. These new drilling results have nearly doubled the gas production and the value of the field. The interpretation method is ready for commercialization and gas exploration and development. The new technology is adaptable to conventional lower cost 3D seismic surveys.

  2. Seismic wave generation systems and methods for cased wells

    DOE Patents [OSTI]

    Minto, James (Houston, TX); Sorrells, Martin H (Huffman, TX); Owen, Thomas E. (Helotes, TX); Schroeder, Edgar C. (San Antonio, TX)

    2011-03-29

    A vibration source (10) includes an armature bar (12) having a major length dimension, and a driver (20A) positioned about the armature bar. The driver (20A) is movably coupled to the armature bar (12), and includes an electromagnet (40). During operation the electromagnet (40) is activated such that the driver (20A) moves with respect to the armature bar (12) and a vibratory signal is generated in the armature bar. A described method for generating a vibratory signal in an object includes positioning the vibration source (10) in an opening of the object, coupling the armature bar (12) to a surface of the object within the opening, and activating the electromagnet (40) of the driver (20A) such that the driver moves with respect to the armature bar (12) and a vibratory signal is generated in the armature bar and the object.

  3. Seismic waveeld calculation for laterally heterogeneous whole earth models using the pseudospectral method

    E-Print Network [OSTI]

    Furumura, Takashi

    coordinates using the pseudospectral method (PSM). The PSM is an attractive time- domain technique that uses the heterogeneity in the model. Synthetic seismograms obtained by the PSM calculation are compared with those agreement. The PSM method is illustrated by constructing the seismic P^SV waveeld for strongly

  4. Historical Information H.6 SeismicIGround Motion Activity

    Office of Legacy Management (LM)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and700, 1.Reports1E~ S·D3Granite , SeismicIGround

  5. Seismicity increase after the construction of the world's tallest building: An active blind fault beneath the Taipei 101

    E-Print Network [OSTI]

    Lin, Cheng-Horng

    be conducted because the safety of the high-rise building in the Taipei basin be comprehensively assessedSeismicity increase after the construction of the world's tallest building: An active blind fault] Seismic activity began to slightly increase during the construction but rose sharply upon the completion

  6. SEISMIC RAY THEORY Seismic Ray Theory presents the most comprehensive treatment of the seismic

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    #12;SEISMIC RAY THEORY Seismic Ray Theory presents the most comprehensive treatment of the seismic ray method available. This method plays an important role in seismology, seismic exploration, and the interpretation of seismic measurements. The book presents a consistent treatment of the seismic ray method, based

  7. Methods and apparatus for use in detecting seismic waves in a borehole

    DOE Patents [OSTI]

    West, Phillip B.; Fincke, James R.; Reed, Teddy R.

    2006-05-23

    The invention provides methods and apparatus for detecting seismic waves propagating through a subterranean formation surrounding a borehole. In a first embodiment, a sensor module uses the rotation of bogey wheels to extend and retract a sensor package for selective contact and magnetic coupling to casing lining the borehole. In a second embodiment, a sensor module is magnetically coupled to the casing wall during its travel and dragged therealong while maintaining contact therewith. In a third embodiment, a sensor module is interfaced with the borehole environment to detect seismic waves using coupling through liquid in the borehole. Two or more of the above embodiments may be combined within a single sensor array to provide a resulting seismic survey combining the optimum of the outputs of each embodiment into a single data set.

  8. Report on the CoRoT Evolution and Seismic Tools Activity

    E-Print Network [OSTI]

    M. K. J. P. F. G. Monteiro; Y. Lebreton; J. Montalban; J. Christensen-Dalsgaard; M. Castro; S. Degl'Innocenti; A. Moya; I. W. Roxburgh; R. Scuflaire; A. Baglin; M. S. Cunha; P. Eggenberger; J. Fernandes; M. J. Goupil; A. Hui-Bon-Hoa; M. Marconi; J. P. Marques; E. Michel; A. Miglio; P. Morel; B. Pichon; P. G. Prada Moroni; J. Provost; A. Ruoppo; J. -C. Suarez; M. Suran; T. C. Teixeira

    2006-05-27

    We present the work undertaken by the Evolution and Seismic Tools Activity (ESTA) team of the CoRoT Seismology Working Group. We have focused on two main tasks: Task 1 - now finished - has aimed at testing, comparing and optimising seven stellar evolution codes which will be used to model the internal structure and evolution of the CoRoT target stars. Task 2, still underway, aims at testing, comparing and optimising different seismic codes used to calculate the oscillations of models for different types of stars. The results already obtained are quite satisfactory, showing minor differences between the different numerical tools provided the same assumptions on the physical parameters are made. This work gives us confidence on the numerical tools that will be available to interpret the future CoRoT seismic data.

  9. Application of the Huang-Hilbert transform and natural time to the analysis of seismic electric signal activities

    SciTech Connect (OSTI)

    Papadopoulou, K. A.; Skordas, E. S.

    2014-12-01

    The Huang method is applied to Seismic Electric Signal (SES) activities in order to decompose them into their components, named Intrinsic Mode Functions (IMFs). We study which of these components contribute to the basic characteristics of the signal. The Hilbert transform is then applied to the IMFs in order to determine their instantaneous amplitudes. The results are compared with those obtained from the analysis in a new time domain termed natural time, after having subtracted the magnetotelluric background from the original signal. It is shown that these instantaneous amplitudes, when combined with the natural time analysis, can be used for the distinction of SES from artificial noises.

  10. Training toward Advanced 3D Seismic Methods for CO2 Monitoring, Verification, and Accounting

    SciTech Connect (OSTI)

    Christopher Liner

    2012-05-31

    The objective of our work is graduate and undergraduate student training related to improved 3D seismic technology that addresses key challenges related to monitoring movement and containment of CO{sub 2}, specifically better quantification and sensitivity for mapping of caprock integrity, fractures, and other potential leakage pathways. We utilize data and results developed through previous DOE-funded CO{sub 2} characterization project (DE-FG26-06NT42734) at the Dickman Field of Ness County, KS. Dickman is a type locality for the geology that will be encountered for CO{sub 2} sequestration projects from northern Oklahoma across the U.S. midcontinent to Indiana and Illinois. Since its discovery in 1962, the Dickman Field has produced about 1.7 million barrels of oil from porous Mississippian carbonates with a small structural closure at about 4400 ft drilling depth. Project data includes 3.3 square miles of 3D seismic data, 142 wells, with log, some core, and oil/water production data available. Only two wells penetrate the deep saline aquifer. In a previous DOE-funded project, geological and seismic data were integrated to create a geological property model and a flow simulation grid. We believe that sequestration of CO{sub 2} will largely occur in areas of relatively flat geology and simple near surface, similar to Dickman. The challenge is not complex geology, but development of improved, lower-cost methods for detecting natural fractures and subtle faults. Our project used numerical simulation to test methods of gathering multicomponent, full azimuth data ideal for this purpose. Our specific objectives were to apply advanced seismic methods to aide in quantifying reservoir properties and lateral continuity of CO{sub 2} sequestration targets. The purpose of the current project is graduate and undergraduate student training related to improved 3D seismic technology that addresses key challenges related to monitoring movement and containment of CO{sub 2}, specifically better quantification and sensitivity for mapping of caprock integrity, fractures, and other potential leakage pathways. Specifically, our focus is fundamental research on (1) innovative narrow-band seismic data decomposition and interpretation, and (2) numerical simulation of advanced seismic data (multi-component, high density, full azimuth data) ideal for mapping of cap rock integrity and potential leakage pathways.

  11. Method for enhancing low frequency output of impulsive type seismic energy sources and its application to a seismic energy source for use while drilling

    DOE Patents [OSTI]

    Radtke, Robert P; Stokes, Robert H; Glowka, David A

    2014-12-02

    A method for operating an impulsive type seismic energy source in a firing sequence having at least two actuations for each seismic impulse to be generated by the source. The actuations have a time delay between them related to a selected energy frequency peak of the source output. One example of the method is used for generating seismic signals in a wellbore and includes discharging electric current through a spark gap disposed in the wellbore in at least one firing sequence. The sequence includes at least two actuations of the spark gap separated by an amount of time selected to cause acoustic energy resulting from the actuations to have peak amplitude at a selected frequency.

  12. Methods and systems for low frequency seismic and infrasound detection of geo-pressure transition zones

    DOE Patents [OSTI]

    Shook, G. Michael; LeRoy, Samuel D.; Benzing, William M.

    2006-07-18

    Methods for determining the existence and characteristics of a gradational pressurized zone within a subterranean formation are disclosed. One embodiment involves employing an attenuation relationship between a seismic response signal and increasing wavelet wavelength, which relationship may be used to detect a gradational pressurized zone and/or determine characteristics thereof. In another embodiment, a method for analyzing data contained within a response signal for signal characteristics that may change in relation to the distance between an input signal source and the gradational pressurized zone is disclosed. In a further embodiment, the relationship between response signal wavelet frequency and comparative amplitude may be used to estimate an optimal wavelet wavelength or range of wavelengths used for data processing or input signal selection. Systems for seismic exploration and data analysis for practicing the above-mentioned method embodiments are also disclosed.

  13. Feasibility study of the seismic reflection method in Amargosa Desert, Nye County, Nevada

    SciTech Connect (OSTI)

    Brocher, T.M.; Hart, P.E.; Carle, S.F.

    1990-11-01

    The US Geological Survey (USGS) working under an Interagency agreement with the Department of Energy is engaged in a broad geoscience program to assess and identify a potential repository for high level nuclear waste at Yucca Mountain, Nye County, Nevada. The USGS program, referred to as the Yucca Mountain Project, or YMP, consists of integrated geologic, hydrologic and geophysical studies which range in nature from site specific to regional. This report is an evaluation of different acquisition methods for future regional seismic reflection studies to be conducted in the vicinity of Yucca Mountain, located in the southwestern corner of the Nevada Test Site (NTS). In January 1988, field studies were conducted to investigate the feasibility of using the common-depth point (CDP) seismic reflection method to map subsurface geological horizons within the Amargosa Desert, Nye County, Nevada. The goal of the field study was to investigate which seismic reflection method(s) should be used for mapping shallow to lower-crustal horizons. Therefore, a wide-variety of field acquisition parameters were tested, included point versus linear receiver group arrays; Vibroseis (service and trademark of Conoco, Inc.) versus explosive sources; Vibroseis array patterns; and Vibroseis sweep and frequency range. 31 refs., 33 figs., 8 tabs.

  14. Estimating reservoir parameters from seismic and electromagnetic data using stochastic rock-physics models and Markov chain Monte Carlo methods

    E-Print Network [OSTI]

    Chen, Jinsong

    ) presented a method for quantitative estimation of reservoir parameters (porosity, water saturationEstimating reservoir parameters from seismic and electromagnetic data using stochastic rock Berkeley National Laboratory Summary A Bayesian model is developed to estimate porosity, fluid saturation

  15. On the validation of seismic imaging methods: Finite frequency or ray theory?

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Maceira, Monica; Larmat, Carene; Porritt, Robert W.; Higdon, David M.; Rowe, Charlotte A.; Allen, Richard M.

    2015-01-23

    We investigate the merits of the more recently developed finite-frequency approach to tomography against the more traditional and approximate ray theoretical approach for state of the art seismic models developed for western North America. To this end, we employ the spectral element method to assess the agreement between observations on real data and measurements made on synthetic seismograms predicted by the models under consideration. We check for phase delay agreement as well as waveform cross-correlation values. Based on statistical analyses on S wave phase delay measurements, finite frequency shows an improvement over ray theory. Random sampling using cross-correlation values identifiesmoreregions where synthetic seismograms computed with ray theory and finite-frequency models differ the most. Our study suggests that finite-frequency approaches to seismic imaging exhibit measurable improvement for pronounced low-velocity anomalies such as mantle plumes.less

  16. Method and apparatus for coupling seismic sensors to a borehole wall

    DOE Patents [OSTI]

    West, Phillip B.

    2005-03-15

    A method and apparatus suitable for coupling seismic or other downhole sensors to a borehole wall in high temperature and pressure environments. In one embodiment, one or more metal bellows mounted to a sensor module are inflated to clamp the sensor module within the borehole and couple an associated seismic sensor to a borehole wall. Once the sensing operation is complete, the bellows are deflated and the sensor module is unclamped by deflation of the metal bellows. In a further embodiment, a magnetic drive pump in a pump module is used to supply fluid pressure for inflating the metal bellows using borehole fluid or fluid from a reservoir. The pump includes a magnetic drive motor configured with a rotor assembly to be exposed to borehole fluid pressure including a rotatable armature for driving an impeller and an associated coil under control of electronics isolated from borehole pressure.

  17. Method Apparatus And System For Detecting Seismic Waves In A Borehole

    DOE Patents [OSTI]

    West, Phillip B. (Idaho Falls, ID); Sumstine, Roger L. (St. George, UT)

    2006-03-14

    A method, apparatus and system for detecting seismic waves. A sensing apparatus is deployed within a bore hole and may include a source magnet for inducing a magnetic field within a casing of the borehole. An electrical coil is disposed within the magnetic field to sense a change in the magnetic field due to a displacement of the casing. The electrical coil is configured to remain substantially stationary relative to the well bore and its casing along a specified axis such that displacement of the casing induces a change within the magnetic field which may then be sensed by the electrical coil. Additional electrical coils may be similarly utilized to detect changes in the same or other associated magnetic fields along other specified axes. The additional sensor coils may be oriented substantially orthogonally relative to one another so as to detect seismic waves along multiple orthogonal axes in three dimensional space.

  18. Category:Active Seismic Techniques | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButte County,Camilla, Georgia: Energy014771°,North Dakota:Bonn | OpenActive

  19. P wave material anisotropy of a tectono-metamorphic terrane: An active source seismic experiment at the KTB super-deep

    E-Print Network [OSTI]

    Okaya, David

    -metamorphic sub-terrane of the crystalline Bohemian massif. The experiment used multi-azimuth vertical seismic profiling whereby downhole sensors recorded surface seismic Vibroseis sources located along six 7.5-kmP wave material anisotropy of a tectono-metamorphic terrane: An active source seismic experiment

  20. Teleseismic-Seismic Monitoring At Central Nevada Seismic Zone...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Central Nevada Seismic Zone Region (Biasi, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  1. Teleseismic-Seismic Monitoring At Central Nevada Seismic Zone...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Central Nevada Seismic Zone Region (Biasi, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  2. The application of seismic stratigraphic methods on exploration 3D seismic data to define a reservoir model in OPL 210, Deepwater Nigeria

    SciTech Connect (OSTI)

    Ragnhild, L.; Ventris, P. [Statoil and BP Alliance, Stavanger (Norway); Osahon, G. [Allied Energy Resources (Nig) Ltd., Lagos (Nigeria)

    1995-08-01

    OPL 210 lies in deepwater on the northwestern flank of the Niger Delta. The partners in this block are Allied Energy and The Statoil and BP Alliance. The license has a 5 year initial exploration phase and carries a 2 well commitment. At present the database comprises a 1 x 1 km grid of 2D seismic across the block, and 450 sq. km of 3D in an area of special interest. A larger 3D survey is planned for 1995. Little is known about the reservoir in the deep water, but we expect our main target to be ponded slope and basin turbidites. As such the bulk of the shelf well data available has little or no relevance to the play type likely to be encountered. Prior to drilling, seismic stratigraphy has been one of several methods used to generate a consistent predictive reservoir model. The excellent quality and high resolution of the 3D data have allowed identification and detailed description of several distinctive seismic facies. These facies are described in terms of their internal geometries and stacking patterns. The geometries are then interpreted based on a knowledge of depositional processes from analog slope settings. This enables a predictive model to be constructed for the distribution of reservoir within the observed facies. These predictions will be tested by one of the first wells drilled in the Nigerian deepwater in mid 1995.

  3. A Feasibility Study of Non-Seismic Geophysical Methods forMonitoring Geologic CO2 Sequestration

    SciTech Connect (OSTI)

    Gasperikova, Erika; Hoversten, G. Michael

    2006-07-01

    Because of their wide application within the petroleumindustry it is natural to consider geophysical techniques for monitoringof CO2 movement within hydrocarbon reservoirs, whether the CO2 isintroduced for enhanced oil/gas recovery or for geologic sequestration.Among the available approaches to monitoring, seismic methods are by farthe most highly developed and applied. Due to cost considerations, lessexpensive techniques have recently been considered. In this article, therelative merits of gravity and electromagnetic (EM) methods as monitoringtools for geological CO2 sequestration are examined for two syntheticmodeling scenarios. The first scenario represents combined CO2 enhancedoil recovery (EOR) and sequestration in a producing oil field, theSchrader Bluff field on the north slope of Alaska, USA. The secondscenario is a simplified model of a brine formation at a depth of 1,900m.

  4. Seismic Emissions from a Highly Impulsive M6.7 Solar Flare

    E-Print Network [OSTI]

    California at Berkeley, University of

    Seismic Emissions from a Highly Impulsive M6.7 Solar Flare J.C. Mart´inez-Oliveros, H. Moradi, A characteristics appeared to closely correspond with previous instances of seismic emission from acoustically active flares. Using standard local helioseismic methods, we identified the seismic sig- natures produced

  5. Method for determining formation quality factor from well log data and its application to seismic reservoir characterization

    DOE Patents [OSTI]

    Walls, Joel; Taner, M. Turhan; Dvorkin, Jack

    2006-08-08

    A method for seismic characterization of subsurface Earth formations includes determining at least one of compressional velocity and shear velocity, and determining reservoir parameters of subsurface Earth formations, at least including density, from data obtained from a wellbore penetrating the formations. A quality factor for the subsurface formations is calculated from the velocity, the density and the water saturation. A synthetic seismogram is calculated from the calculated quality factor and from the velocity and density. The synthetic seismogram is compared to a seismic survey made in the vicinity of the wellbore. At least one parameter is adjusted. The synthetic seismogram is recalculated using the adjusted parameter, and the adjusting, recalculating and comparing are repeated until a difference between the synthetic seismogram and the seismic survey falls below a selected threshold.

  6. High slip rate for a low seismicity along the Palu-Koro active fault in central Sulawesi (Indonesia)

    E-Print Network [OSTI]

    Vigny, Christophe

    High slip rate for a low seismicity along the Palu-Koro active fault in central Sulawesi (Indonesia, Indonesia Introduction Sulawesi Island, eastern Indonesia, is at the triple junction of the Pacic (through- ABSTRACT In eastern Indonesia, the Central Sulawesi fault system consists of complex left-lateral strike

  7. Seismicity on the western Greenland Ice Sheet: Surface fracture in the vicinity of active moulins

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Carmichael, Joshua D.; Joughin, Ian; Behn, Mark D.; Das, Sarah; King, Matt A.; Stevens, Laura; Lizarralde, Dan

    2015-06-25

    We analyzed geophone and GPS measurements collected within the ablation zone of the western Greenland Ice Sheet during a ~35 day period of the 2011 melt season to study changes in ice deformation before, during, and after a supraglacial lake drainage event. During rapid lake drainage, ice flow speeds increased to ~400% of winter values, and icequake activity peaked. At times >7 days after drainage, this seismicity developed variability over both diurnal and longer periods (~10 days), while coincident ice speeds fell to ~150% of winter values and showed nightly peaks in spatial variability. Approximately 95% of all detected seismicitymorein the lake basin and its immediate vicinity was triggered by fracture propagation within near-surface ice (less

  8. Probabilistic structural seismic performance assessment methodology and application to an actual bridge-foundation -ground system

    E-Print Network [OSTI]

    Zhang, Yuyi

    2006-01-01

    methods for seismic safety assessments of nuclear powerthe context of seismic safety assessments of nuclear power

  9. Confined masonry for seismically resilient low-cost housing in India : a design and analysis method

    E-Print Network [OSTI]

    Porst, Christopher F

    2015-01-01

    Confined masonry (CM) is a viable housing typology that is resilient and economical for developing countries in seismic regions. Given its suitability for low-tech environments, multiple authors have published instructions ...

  10. Probabilistic methods in seismic risk assessment for nuclear power plants: proceedings

    SciTech Connect (OSTI)

    Not Available

    1983-01-01

    The state-of-the-art in seismic risk analysis applied to the design and siting of nuclear power plants was addressed in this meeting. Presentations were entered individually into the date base. (ACR)

  11. Method for FractMethod for Fracture Detection Using Multicomponent Seismic

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

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines light on dark matter ByMentor-ProtegeFromGasInnovationMethod for

  12. Temporal Integration of Seismic Traveltime Tomography

    E-Print Network [OSTI]

    Ajo-Franklin, Jonathan B.

    2005-06-01

    Time-lapse geophysical measurements and seismic imaging methods in particular are powerful techniques

  13. Method for identifying subsurface fluid migration and drainage pathways in and among oil and gas reservoirs using 3-D and 4-D seismic imaging

    DOE Patents [OSTI]

    Anderson, Roger N. (New York, NY); Boulanger, Albert (New York, NY); Bagdonas, Edward P. (Brookline, MA); Xu, Liqing (New Milford, NJ); He, Wei (New Milford, NJ)

    1996-01-01

    The invention utilizes 3-D and 4-D seismic surveys as a means of deriving information useful in petroleum exploration and reservoir management. The methods use both single seismic surveys (3-D) and multiple seismic surveys separated in time (4-D) of a region of interest to determine large scale migration pathways within sedimentary basins, and fine scale drainage structure and oil-water-gas regions within individual petroleum producing reservoirs. Such structure is identified using pattern recognition tools which define the regions of interest. The 4-D seismic data sets may be used for data completion for large scale structure where time intervals between surveys do not allow for dynamic evolution. The 4-D seismic data sets also may be used to find variations over time of small scale structure within individual reservoirs which may be used to identify petroleum drainage pathways, oil-water-gas regions and, hence, attractive drilling targets. After spatial orientation, and amplitude and frequency matching of the multiple seismic data sets, High Amplitude Event (HAE) regions consistent with the presence of petroleum are identified using seismic attribute analysis. High Amplitude Regions are grown and interconnected to establish plumbing networks on the large scale and reservoir structure on the small scale. Small scale variations over time between seismic surveys within individual reservoirs are identified and used to identify drainage patterns and bypassed petroleum to be recovered. The location of such drainage patterns and bypassed petroleum may be used to site wells.

  14. Method for identifying subsurface fluid migration and drainage pathways in and among oil and gas reservoirs using 3-D and 4-D seismic imaging

    DOE Patents [OSTI]

    Anderson, R.N.; Boulanger, A.; Bagdonas, E.P.; Xu, L.; He, W.

    1996-12-17

    The invention utilizes 3-D and 4-D seismic surveys as a means of deriving information useful in petroleum exploration and reservoir management. The methods use both single seismic surveys (3-D) and multiple seismic surveys separated in time (4-D) of a region of interest to determine large scale migration pathways within sedimentary basins, and fine scale drainage structure and oil-water-gas regions within individual petroleum producing reservoirs. Such structure is identified using pattern recognition tools which define the regions of interest. The 4-D seismic data sets may be used for data completion for large scale structure where time intervals between surveys do not allow for dynamic evolution. The 4-D seismic data sets also may be used to find variations over time of small scale structure within individual reservoirs which may be used to identify petroleum drainage pathways, oil-water-gas regions and, hence, attractive drilling targets. After spatial orientation, and amplitude and frequency matching of the multiple seismic data sets, High Amplitude Event (HAE) regions consistent with the presence of petroleum are identified using seismic attribute analysis. High Amplitude Regions are grown and interconnected to establish plumbing networks on the large scale and reservoir structure on the small scale. Small scale variations over time between seismic surveys within individual reservoirs are identified and used to identify drainage patterns and bypassed petroleum to be recovered. The location of such drainage patterns and bypassed petroleum may be used to site wells. 22 figs.

  15. Injection monitoring with seismic arrays and adaptive noise cancellation

    SciTech Connect (OSTI)

    Harben, P.E.; Harris, D.B.; Jarpe, S.P.

    1991-01-01

    Although the application of seismic methods, active and passive, to monitor in-situ reservoir stimulation processes is not new, seismic arrays and array processing technology coupled with a new noise cancellation method has not been attempted. Successful application of seismic arrays to passively monitor in-situ reservoir stimulation processes depends on being able to sufficiently cancel the expected large amplitude background seismic noise typical of an oil or geothermal production environment so that small amplitude seismic signals occurring at depth can be detected and located. This report describes the results of a short field experiment conducted to test both the application of seismic arrays for in-situ reservoir stimulation monitoring and the active noise cancellation technique in a real reservoir production environment. Although successful application of these techniques to in-situ reservoir stimulation monitoring would have the greatest payoff in the oil industry, the proof-of-concept field experiment site was chosen to be the Geysers geothermal field in northern California. This site was chosen because of known high seismicity rates, a relatively shallow production depth, cooperation and some cost sharing the UNOCAL Oil Corporation, and the close proximity of the site to LLNL. The body of this report describes the Geysers field experimental configuration and then discusses the results of the seismic array processing and the results of the seismic noise cancellation followed by a brief conclusion. 2 refs., 11 figs.

  16. Engineered enzymatically active bacteriophages and methods of...

    Office of Scientific and Technical Information (OSTI)

    enzymatically active bacteriophages and methods of uses thereof The present invention provides engineered bacteriophages that express at least one biofilm degrading...

  17. Seismic Assessment and Retrofit of Existing Multi-Column Bent Bridges

    E-Print Network [OSTI]

    Seismic Assessment and Retrofit of Existing Multi-Column Bent Bridges By Cole C. Mc ................................................................................................................................... 6 Seismic Activity in Western Washington State Approach Bridge Modeling .............................................11 Seismic Excitations

  18. Method for attenuating seismic shock from detonating explosive in an in situ oil shale retort

    DOE Patents [OSTI]

    Studebaker, Irving G. (Grand Junction, CO); Hefelfinger, Richard (Grand Junction, CO)

    1980-01-01

    In situ oil shale retorts are formed in formation containing oil shale by excavating at least one void in each retort site. Explosive is placed in a remaining portion of unfragmented formation within each retort site adjacent such a void, and such explosive is detonated in a single round for explosively expanding formation within the retort site toward such a void for forming a fragmented permeable mass of formation particles containing oil shale in each retort. This produces a large explosion which generates seismic shock waves traveling outwardly from the blast site through the underground formation. Sensitive equipment which could be damaged by seismic shock traveling to it straight through unfragmented formation is shielded from such an explosion by placing such equipment in the shadow of a fragmented mass in an in situ retort formed prior to the explosion. The fragmented mass attenuates the velocity and magnitude of seismic shock waves traveling toward such sensitive equipment prior to the shock wave reaching the vicinity of such equipment.

  19. Estimating reservoir parameters from seismic and electromagnetic data using stochastic rock-physics models and Markov chain Monte Carlo methods

    E-Print Network [OSTI]

    Chen, Jinsong

    Joint inversion of 2D or 3D seismic and EM data for reservoir parameter estimation is computationallyEstimating reservoir parameters from seismic and electromagnetic data using stochastic rock, and pore pressure in reservoirs using seismic and electromagnetic (EM) data. Within the Bayesian framework

  20. Stellar Evolution and Seismic Tools for Asteroseismology Diffusive Processes in Stars and Seismic Analysis

    E-Print Network [OSTI]

    Monteiro, Mrio Joo

    Stellar Evolution and Seismic Tools for Asteroseismology Diffusive Processes in Stars and Seismic undertaken by the Evolution and Seismic Tools Activity (ESTA) team of the CoRoT Seismology Working Group have presented the work undertaken by the Evolution and Seismic Tools Activity (ESTA) team of the Co

  1. Encapsulation method for maintaining biodecontamination activity

    DOE Patents [OSTI]

    Rogers, Robert D. (Idaho Falls, ID); Hamilton, Melinda A. (Idaho Falls, ID); Nelson, Lee O. (Idaho Falls, ID); Benson, Jennifer (Cockermouth, GB); Green, Martin J. (Wooton, GB); Milner, Timothy N. (Centerville, VA)

    2002-01-01

    A method for maintaining the viability and subsequent activity of microorganisms utilized in a variety of environments to promote biodecontamination of surfaces. One application involves the decontamination of concrete surfaces. Encapsulation of microbial influenced degradation (MID) microorganisms has shown that MID activity is effectively maintained under passive conditions, that is, without manual addition of moisture or nutrients, for an extended period of time.

  2. Encapsulation method for maintaining biodecontamination activity

    DOE Patents [OSTI]

    Rogers, Robert D.; Hamilton, Melinda A.; Nelson, Lee O.; Benson, Jennifer; Green, Martin J.; Milner, Timothy N.

    2006-04-11

    A method for maintaining the viability and subsequent activity of microorganisms utilized in a variety of environments to promote biodecontamination of surfaces. One application involves the decontamination of concrete surfaces. Encapsulation of microbial influenced degradation (MID) microorganisms has shown that MID activity is effectively maintained under passive conditions, that is, without manual addition of moisture or nutrients, for an extended period of time.

  3. A Vertical Hydrophone Array Coupled via Inductive Modem for Detecting Deep-Ocean Seismic and

    E-Print Network [OSTI]

    Bohnenstiehl, Delwayne

    A Vertical Hydrophone Array Coupled via Inductive Modem for Detecting Deep-Ocean Seismic synchronization methods based on three-wire serial or NTP network interface, it only requires an insulated single is active with seismicity and submarine eruptions. The results of the four-month long monitoring

  4. Teleseismic-Seismic Monitoring At Kilauea Summit Area (Chouet...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Kilauea Summit Area (Chouet & Aki, 1981) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Teleseismic-Seismic...

  5. Methods and apparatus of suppressing tube waves within a bore hole and seismic surveying systems incorporating same

    DOE Patents [OSTI]

    West, Phillip B.; Haefner, Daryl

    2004-08-17

    Methods and apparatus for attenuating waves in a bore hole, and seismic surveying systems incorporating the same. In one embodiment, an attenuating device includes a soft compliant bladder coupled to a pressurized gas source. A pressure regulating system reduces the pressure of the gas from the gas source prior to entering the bladder and operates in conjunction with the hydrostatic pressure of the fluid in a bore hole to maintain the pressure of the bladder at a specified pressure relative to the surrounding bore hole pressure. Once the hydrostatic pressure of the bore hole fluid exceeds that of the gas source, bore hole fluid may be admitted into a vessel of the gas source to further compress and displace the gas contained therein. In another embodiment, a water-reactive material may be used to provide gas to the bladder wherein the amount of gas generated by the water-reactive material may depend on the hydrostatic pressure of the bore hole fluid.

  6. Methods and apparatus of suppressing tube waves within a bore hole and seismic surveying systems incorporating same

    DOE Patents [OSTI]

    West, Phillip B.; Haefner, Daryl

    2005-12-13

    Methods and apparatus for attenuating waves in a bore hole, and seismic surveying systems incorporating the same. In one embodiment, an attenuating device includes a soft compliant bladder coupled to a pressurized gas source. A pressure regulating system reduces the pressure of the gas from the gas source prior to entering the bladder and operates in conjunction with the hydrostatic pressure of the fluid in a bore hole to maintain the pressure of the bladder at a specified pressure relative to the surrounding bore hole pressure. Once the hydrostatic pressure of the bore hole fluid exceeds that of the gas source, bore hole fluid may be admitted into a vessel of the gas source to further compress and displace the gas contained therein. In another embodiment, a water-reactive material may be used to provide gas to the bladder wherein the amount of gas generated by the water-reactive material may depend on the hydrostatic pressure of the bore hole fluid.

  7. Machine Learning for Seismic Signal Processing: Seismic Phase Classification on a Manifold

    E-Print Network [OSTI]

    Meyer, Francois

    Machine Learning for Seismic Signal Processing: Seismic Phase Classification on a Manifold Juan--In this research, we consider the supervised learning problem of seismic phase classification. In seismology, knowledge of the seismic activity arrival time and phase leads to epicenter localization and surface

  8. Radiated seismic energy from coda measurements and no scaling in apparent stress with seismic moment

    E-Print Network [OSTI]

    Prieto, Germn A.

    Radiated seismic energy from coda measurements and no scaling in apparent stress with seismic March 2010; accepted 9 April 2010; published 31 August 2010. [1] The seismic coda consists of scattered of radiated wave energy. We apply an empirical Green's function (EGF) method to the seismic coda in order

  9. Method for photon activation positron annihilation analysis

    DOE Patents [OSTI]

    Akers, Douglas W.

    2006-06-06

    A non-destructive testing method comprises providing a specimen having at least one positron emitter therein; determining a threshold energy for activating the positron emitter; and determining whether a half-life of the positron emitter is less than a selected half-life. If the half-life of the positron emitter is greater than or equal to the selected half-life, then activating the positron emitter by bombarding the specimen with photons having energies greater than the threshold energy and detecting gamma rays produced by annihilation of positrons in the specimen. If the half-life of the positron emitter is less then the selected half-life, then alternately activating the positron emitter by bombarding the specimen with photons having energies greater then the threshold energy and detecting gamma rays produced by positron annihilation within the specimen.

  10. Seismic interferometry and non-linear tomography

    E-Print Network [OSTI]

    Galetti, Erica

    2015-06-30

    Seismic records contain information that allows geoscientists to make inferences about the structure and properties of the Earths interior. Traditionally, seismic imaging and tomography methods require wavefields to be ...

  11. Life safety and seismic hazards: Selecting buildings for review and questions still to answer

    SciTech Connect (OSTI)

    Keller, M.D.

    1993-11-01

    Los Alamos National Laboratory (LANL) is situated on the eastern flank of the Jemez Mountains in which lies the Valles Caldera, a volcanic center that erupted 1.1 to 1.5 million years ago. Los Alamos is also situated within the western margin of the Rio Grande Rift system, where there is a possibility for seismic activity. Within the Los Alamos area are numerous faults, some within a kilometer or two of LANL structures, some even closer. Many of the permanent structures within Los Alamos were designed and constructed in accordance with applicable building codes in the 1950s. These codes have now been determined to be deficient with respect to both forcing functions of seismic events and structure design. LANL, in response to a letter from the University of California dated October 29, 1990, began the Seismic Hazards Investigation Program to determine the characteristics of a probable seismic event at Los Alamos and to determine the ability of the existing structures to withstand the forces generated by such an event. In the Seismic Hazards Investigation Program, paleoseismic methods are used to determine seismic characterization and a systematic method is needed to investigate existing structures, systems, and components for the ability to resist seismic forces. This paper presents the methodology for determining seismic characterizations and structure prioritization and analysis at LANL for the Seismic Hazards Investigation Program.

  12. Seismic Modelling for the Sub-Basalt Imaging Problem Including an Analysis and Development of the Boundary Element Method

    E-Print Network [OSTI]

    Dobson, Andrew

    The north-east Atlantic margin (NEAM) is important for hydrocarbon exploration because of the growing evidence of hydrocarbon reserves in the region. However, seismic exploration of the sub-surface is hampered by large ...

  13. Dual stage active magnetic regenerator and method

    DOE Patents [OSTI]

    Pecharsky, V.K.; Gschneidner, K.A. Jr.

    1999-03-30

    A dual stage active magnetic regenerator refrigerator as well as method using the Joule-Brayton thermodynamic cycle includes a high temperature stage refrigerant comprising DyAl{sub 2} or (Dy{sub 1{minus}x}Er{sub x})Al{sub 2} where x is selected to be greater than 0 and less than about 0.3 in combination with a low temperature stage comprising (Dy{sub 1{minus}x}Er{sub x})Al{sub 2} where x is selected to be greater than about 0.5 and less than 1 to provide significantly improved refrigeration efficiency in the liquefaction of gaseous hydrogen. 17 figs.

  14. Method for inverting reflection trace data from 3-D and 4-D seismic surveys and identifying subsurface fluid and pathways in and among hydrocarbon reservoirs based on impedance models

    DOE Patents [OSTI]

    He, W.; Anderson, R.N.

    1998-08-25

    A method is disclosed for inverting 3-D seismic reflection data obtained from seismic surveys to derive impedance models for a subsurface region, and for inversion of multiple 3-D seismic surveys (i.e., 4-D seismic surveys) of the same subsurface volume, separated in time to allow for dynamic fluid migration, such that small scale structure and regions of fluid and dynamic fluid flow within the subsurface volume being studied can be identified. The method allows for the mapping and quantification of available hydrocarbons within a reservoir and is thus useful for hydrocarbon prospecting and reservoir management. An iterative seismic inversion scheme constrained by actual well log data which uses a time/depth dependent seismic source function is employed to derive impedance models from 3-D and 4-D seismic datasets. The impedance values can be region grown to better isolate the low impedance hydrocarbon bearing regions. Impedance data derived from multiple 3-D seismic surveys of the same volume can be compared to identify regions of dynamic evolution and bypassed pay. Effective Oil Saturation or net oil thickness can also be derived from the impedance data and used for quantitative assessment of prospective drilling targets and reservoir management. 20 figs.

  15. Method for inverting reflection trace data from 3-D and 4-D seismic surveys and identifying subsurface fluid and pathways in and among hydrocarbon reservoirs based on impedance models

    DOE Patents [OSTI]

    He, Wei (New Milford, NJ); Anderson, Roger N. (New York, NY)

    1998-01-01

    A method is disclosed for inverting 3-D seismic reflection data obtained from seismic surveys to derive impedance models for a subsurface region, and for inversion of multiple 3-D seismic surveys (i.e., 4-D seismic surveys) of the same subsurface volume, separated in time to allow for dynamic fluid migration, such that small scale structure and regions of fluid and dynamic fluid flow within the subsurface volume being studied can be identified. The method allows for the mapping and quantification of available hydrocarbons within a reservoir and is thus useful for hydrocarbon prospecting and reservoir management. An iterative seismic inversion scheme constrained by actual well log data which uses a time/depth dependent seismic source function is employed to derive impedance models from 3-D and 4-D seismic datasets. The impedance values can be region grown to better isolate the low impedance hydrocarbon bearing regions. Impedance data derived from multiple 3-D seismic surveys of the same volume can be compared to identify regions of dynamic evolution and bypassed pay. Effective Oil Saturation or net oil thickness can also be derived from the impedance data and used for quantitative assessment of prospective drilling targets and reservoir management.

  16. 1.10 Theory and Observations Seismic Tomography and Inverse Methods

    E-Print Network [OSTI]

    Boschi, Lapo

    least-squares solutions 338 1.10.4.2.2 Occam's inversion and Bayesian methods 340 1.10.4.3 Hypocenter solvers 338 1.10.4.2 Regularized and Constrained Inversion 338 1.10.4.2.1 Generalized inverse and damped

  17. Investigation of active faulting at the Emigrant Peak fault in Nevada using shallow seismic reflection and ground penetrating radar

    E-Print Network [OSTI]

    Christie, Michael Wayne

    2007-12-18

    The objective of this study was to assess fault displacement, off-fault deformation, and alluvial fan stratigraphy at the Emigrant Peak fault zone (EPFZ) in Fish Lake Valley, Nevada utilizing shallow seismic reflection (SSR) and ground penetrating...

  18. Actively controlled vibration welding system and method

    DOE Patents [OSTI]

    Cai, Wayne W.; Kang, Bongsu; Tan, Chin-An

    2013-04-02

    A vibration welding system includes a controller, welding horn, an active material element, and anvil assembly. The assembly may include an anvil body connected to a back plate and support member. The element, e.g., a piezoelectric stack or shape memory alloy, is positioned with respect to the assembly. The horn vibrates in a desirable first direction to form a weld on a work piece. The element controls any vibrations in a second direction by applying calibrated response to the anvil body in the second direction. A method for controlling undesirable vibrations in the system includes positioning the element with respect to the anvil assembly, connecting the anvil body to the support member through the back plate, vibrating the horn in a desirable first direction, and transmitting an input signal to the element to control vibration in an undesirable second direction.

  19. Seismic ray theory Vlastislav Cerveny 1

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    to the methods most frequently used in seismology and seismic exploration for forward and inverse modelling play an important role in contemporary seismology and seismic exploration. Consequently, it has alsoSeismic ray theory Vlastislav Cerven´y 1 ) and Ivan Psenc´ik 2 ) 1 ) Charles University, Faculty

  20. System and method for generating micro-seismic events and characterizing properties of a medium with non-linear acoustic interactions

    DOE Patents [OSTI]

    Vu, Cung Khac; Nihei, Kurt; Johnson, Paul A.; Guyer, Robert; Ten Cate, James A.; Le Bas, Pierre-Yves; Larmat, Carene S.

    2015-12-29

    A method and system includes generating a first coded acoustic signal including pulses each having a modulated signal at a central frequency; and a second coded acoustic signal each pulse of which includes a modulated signal a central frequency of which is a fraction d of the central frequency of the modulated signal for the corresponding pulse in the first plurality of pulses. A receiver detects a third signal generated by a non-linear mixing process in the mixing zone and the signal is processed to extract the third signal to obtain an emulated micro-seismic event signal occurring at the mixing zone; and to characterize properties of the medium or creating a 3D image of the properties of the medium, or both, based on the emulated micro-seismic event signal.

  1. Annual Hanford Seismic Report for Fiscal Year 2004

    SciTech Connect (OSTI)

    Hartshorn, Donald C.; Reidel, Steve P.; Rohay, Alan C.

    2004-12-07

    This report describes seismic activity at and around the Hanford Site during Fiscal Year 2004. It is also the first description of seismic activity during the fourth quarter of FY04.

  2. Theoretical and experimental activities on opacities for a good interpretation of seismic stellar probes

    E-Print Network [OSTI]

    Turck-Chize, S; Gilles, D; Thais, F; Bastiani, S; Blancard, C; Busquet, M; Caillaud, T; Cosse, P; Blenski, T; Delahaye, F; Ducret, J E; Faussurier, G; Gilleron, F; Guzik, J; Harris, J W; Kilcrease, D P; Magee, N H; Piau, L; Pain, J C; Poirier, M; Porcherot, Q; Reverdin, C; Silvert, V; Villette, B; Zeippen, C

    2011-01-01

    Opacity calculations are basic ingredients of stellar modelling. They play a crucial role in the interpretation of acoustic modes detected by SoHO, COROT and KEPLER. In this review we present our activities on both theoretical and experimental sides. We show new calculations of opacity spectra and comparisons between eight groups who produce opacity spectra calculations in the domain where experiments are scheduled. Real differences are noticed with real astrophysical consequences when one extends helioseismology to cluster studies of different compositions. Two cases are considered presently: (1) the solar radiative zone and (2) the beta Cephei envelops. We describe how our experiments are performed and new preliminary results on nickel obtained in the campaign 2010 at LULI 2000 at Polytechnique.

  3. Teleseismic-Seismic Monitoring At Yellowstone Region (Chatterjee...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Yellowstone Region (Chatterjee, Et Al., 1985) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  4. SEISMIC ATTENUATION FOR RESERVOIR CHARACTERIZATION

    SciTech Connect (OSTI)

    Joel Walls; M.T. Taner; Naum Derzhi; Gary Mavko; Jack Dvorkin

    2002-10-01

    RSI has access to two synthetic seismic programs: Osiris seismic modeling system provided by Odegaard (Osiris) and synthetic seismic program, developed by SRB, implementing the Kennett method for normal incidence. Achieving virtually identical synthetic seismic traces from these different programs serves as cross-validation for both. The subsequent experiments have been performed with the Kennett normal incidence code because: We have access to the source code, which allowed us to easily control computational parameters and integrate the synthetics computations with our graphical and I/O systems. This code allows to perform computations and displays on a PC in MatLab or Octave environment, which is faster and more convenient. The normal incidence model allows us to exclude from the synthetic traces some of the physical effects that take place in 3-D models (like inhomogeneous waves) but have no relevance to the topic of our investigation, which is attenuation effects on seismic reflection and transmission.

  5. PRINCIPLES OF SEISMIC HOLOGRAPHY FOR DIAGNOSTICS OF THE SHALLOW SUBPHOTOSPHERE Charles Lindsey and D. C. Braun

    E-Print Network [OSTI]

    Braun, Douglas C.

    PRINCIPLES OF SEISMIC HOLOGRAPHY FOR DIAGNOSTICS OF THE SHALLOW SUBPHOTOSPHERE Charles Lindsey develop the wave-mechanical formalism for phase-correlation computational seismic holography headinggs: Sun: activity -- Sun: helioseismology -- sunspots 1. INTRODUCTION Computational seismic

  6. March 16, 2010March 16, 2010 Introduction to Seismic ExplorationIntroduction to Seismic Exploration

    E-Print Network [OSTI]

    Ito, Garrett

    3/15/2010 1 GG450GG450 March 16, 2010March 16, 2010 Introduction to Seismic ExplorationIntroduction to Seismic Exploration andand Elementary Digital AnalysisElementary Digital Analysis Some of the material IIntroduction AsAs more than 90% of geophysicalmore than 90% of geophysical exploration utilizes seismic methods

  7. Exploring the Earths subsurface with virtual seismic sources and receivers

    E-Print Network [OSTI]

    Nicolson, Heather Johan

    2011-11-24

    Traditional methods of imaging the Earths subsurface using seismic waves require an identifiable, impulsive source of seismic energy, for example an earthquake or explosive source. Naturally occurring, ambient seismic waves form an ever...

  8. Review paper Seismic interferometry and ambient noise tomography in the British Isles

    E-Print Network [OSTI]

    Review paper Seismic interferometry and ambient noise tomography in the British Isles Heather. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 2. Theory and method of seismic interferometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 4.2. Seismic interferometry across the Scottish Highlands

  9. ON THE FLARE-INDUCED SEISMICITY IN THE ACTIVE REGION NOAA 10930 AND RELATED ENHANCEMENT OF GLOBAL WAVES IN THE SUN

    SciTech Connect (OSTI)

    Kumar, Brajesh; Venkatakrishnan, P.; Mathur, Savita; Tiwari, Sanjiv Kumar; Garcia, R. A. E-mail: pvk@prl.res.in E-mail: tiwari@mps.mpg.de

    2011-12-10

    A major flare (of class X3.4) occurred on 2006 December 13 in the active region NOAA 10930. This flare event has remained interesting to solar researchers for studies related to particle acceleration during the flare process and the reconfiguration of magnetic fields as well as fine-scale features in the active region. The energy released during flares is also known to induce acoustic oscillations in the Sun. Here, we analyze the line-of-sight velocity patterns in this active region during the X3.4 flare using the Dopplergrams obtained by the Global Oscillation Network Group (GONG) instrument. We have also analyzed the disk-integrated velocity observations of the Sun obtained by the Global Oscillation at Low Frequency (GOLF) instrument on board the Solar and Heliospheric Observatory spacecraft as well as full-disk collapsed velocity signals from GONG observations during this flare to study any possible connection between the flare-related changes seen in the local and global velocity oscillations in the Sun. We apply wavelet transform to the time series of the localized velocity oscillations as well as the global velocity oscillations in the Sun spanning the flare event. The line-of-sight velocity shows significant enhancement in some localized regions of the penumbra of this active region during the flare. The affected region is seen to be away from the locations of the flare ribbons and the hard X-ray footpoints. The sudden enhancement of this velocity seems to be caused by the Lorentz force driven by the 'magnetic jerk' in the localized penumbral region. Application of wavelet analysis to these flare-induced localized seismic signals shows significant enhancement in the high-frequency domain (5 <{nu} < 8 mHz) and a feeble enhancement in the p-mode oscillations (2 <{nu} < 5 mHz) during the flare. On the other hand, the wavelet analysis of GOLF velocity data and the full-disk collapsed GONG velocity data spanning the flare event indicates significant post-flare enhancements in the high-frequency global velocity oscillations in the Sun, as evident from the wavelet power spectrum and the corresponding scale-average variance. The present observations of the flare-induced seismic signals in the active region in context of the driving force are different as compared to previous reports on such cases. We also find indications of a connection between flare-induced localized seismic signals and the excitation of global high-frequency oscillations in the Sun.

  10. Seismic Reflection Studies in Long Valley Caldera, Califomia

    E-Print Network [OSTI]

    Black, Ross A.; Deemer, Sharon J.; Smithson, Scott B.

    1991-03-10

    Seismic reflection studies in Long Valley caldera, California, indicate that seismic methods may be successfully employed to image certain types of features in young silicic caldera environments. However, near-surface geological conditions within...

  11. Infrasound Generation from the HH Seismic Hammer.

    SciTech Connect (OSTI)

    Jones, Kyle Richard

    2014-10-01

    The HH Seismic hammer is a large, %22weight-drop%22 source for active source seismic experiments. This system provides a repetitive source that can be stacked for subsurface imaging and exploration studies. Although the seismic hammer was designed for seismological studies it was surmised that it might produce energy in the infrasonic frequency range due to the ground motion generated by the 13 metric ton drop mass. This study demonstrates that the seismic hammer generates a consistent acoustic source that could be used for in-situ sensor characterization, array evaluation and surface-air coupling studies for source characterization.

  12. Micro-meteoroid seismic uplift and regolith concentration on kilometric scale asteroids

    E-Print Network [OSTI]

    Garcia, Raphael F; Mimoun, David

    2015-01-01

    Seismic shaking is an attractive mechanism to explain the destabilisation of regolith slopes and the regolith migration found on the surfaces of asteroids (Richardson et al. 2004; Miyamoto et al. 2007). Here, we use a continuum mechanics method to simulate the seismic wave propagation in an asteroid. Assuming that asteroids can be described by a cohesive core surrounded by a thin non-cohesive regolith layer, our numerical simulations of vibrations induced by micro-meteoroids suggest that the surface peak ground accelerations induced by micro-meteoroid impacts may have been previously under-estimated. Our lower bound estimate of vertical accelerations induced by seismic waves is about 50 times larger than previous estimates. It suggests that impact events triggering seismic activity are more frequent than previously assumed for asteroids in the kilometric and sub-kilometric size range. The regolith lofting is also estimated by a first order ballistic approximation. Vertical displacements are small, but lofting...

  13. Imaging passive seismic data Brad Artman

    E-Print Network [OSTI]

    Imaging passive seismic data Brad Artman brad@sep.stanford.edu Submitted to Geophysics March 2005, CA 94305-2215 ABSTRACT Passive seismic imaging is the process of synthesizing the wealth to produce a subsurface image. For passively acquired data, migration is even more important than for active

  14. Advanced Seismic While Drilling System

    SciTech Connect (OSTI)

    Robert Radtke; John Fontenot; David Glowka; Robert Stokes; Jeffery Sutherland; Ron Evans; Jim Musser

    2008-06-30

    A breakthrough has been discovered for controlling seismic sources to generate selectable low frequencies. Conventional seismic sources, including sparkers, rotary mechanical, hydraulic, air guns, and explosives, by their very nature produce high-frequencies. This is counter to the need for long signal transmission through rock. The patent pending SeismicPULSER{trademark} methodology has been developed for controlling otherwise high-frequency seismic sources to generate selectable low-frequency peak spectra applicable to many seismic applications. Specifically, we have demonstrated the application of a low-frequency sparker source which can be incorporated into a drill bit for Drill Bit Seismic While Drilling (SWD). To create the methodology of a controllable low-frequency sparker seismic source, it was necessary to learn how to maximize sparker efficiencies to couple to, and transmit through, rock with the study of sparker designs and mechanisms for (a) coupling the sparker-generated gas bubble expansion and contraction to the rock, (b) the effects of fluid properties and dynamics, (c) linear and non-linear acoustics, and (d) imparted force directionality. After extensive seismic modeling, the design of high-efficiency sparkers, laboratory high frequency sparker testing, and field tests were performed at the University of Texas Devine seismic test site. The conclusion of the field test was that extremely high power levels would be required to have the range required for deep, 15,000+ ft, high-temperature, high-pressure (HTHP) wells. Thereafter, more modeling and laboratory testing led to the discovery of a method to control a sparker that could generate low frequencies required for deep wells. The low frequency sparker was successfully tested at the Department of Energy Rocky Mountain Oilfield Test Center (DOE RMOTC) field test site in Casper, Wyoming. An 8-in diameter by 26-ft long SeismicPULSER{trademark} drill string tool was designed and manufactured by TII. An APS Turbine Alternator powered the SeismicPULSER{trademark} to produce two Hz frequency peak signals repeated every 20 seconds. Since the ION Geophysical, Inc. (ION) seismic survey surface recording system was designed to detect a minimum downhole signal of three Hz, successful performance was confirmed with a 5.3 Hz recording with the pumps running. The two Hz signal generated by the sparker was modulated with the 3.3 Hz signal produced by the mud pumps to create an intense 5.3 Hz peak frequency signal. The low frequency sparker source is ultimately capable of generating selectable peak frequencies of 1 to 40 Hz with high-frequency spectra content to 10 kHz. The lower frequencies and, perhaps, low-frequency sweeps, are needed to achieve sufficient range and resolution for realtime imaging in deep (15,000 ft+), high-temperature (150 C) wells for (a) geosteering, (b) accurate seismic hole depth, (c) accurate pore pressure determinations ahead of the bit, (d) near wellbore diagnostics with a downhole receiver and wired drill pipe, and (e) reservoir model verification. Furthermore, the pressure of the sparker bubble will disintegrate rock resulting in an increased overall rates of penetration. Other applications for the SeismicPULSER{trademark} technology are to deploy a low-frequency source for greater range on a wireline for Reverse Vertical Seismic Profiling (RVSP) and Cross-Well Tomography. Commercialization of the technology is being undertaken by first contacting stakeholders to define the value proposition for rig site services utilizing SeismicPULSER{trademark} technologies. Stakeholders include national oil companies, independent oil companies, independents, service companies, and commercial investors. Service companies will introduce a new Drill Bit SWD service for deep HTHP wells. Collaboration will be encouraged between stakeholders in the form of joint industry projects to develop prototype tools and initial field trials. No barriers have been identified for developing, utilizing, and exploiting the low-frequency SeismicPULSER{trademark} source in a

  15. Using DFT Methods to Study Activators in Optical Materials Du...

    Office of Scientific and Technical Information (OSTI)

    Using DFT Methods to Study Activators in Optical Materials Du, Mao-Hua ORNL Oak Ridge National Laboratory (ORNL) ORNL work for others; SC USDOE - Office of Science (SC) United...

  16. Regional seismic discrimination research at LLNL

    SciTech Connect (OSTI)

    Walter, W.R.; Mayeda, K.M.; Goldstein, P.; Patton, H.J.; Jarpe, S.; Glenn, L.

    1995-10-01

    The ability to verify a Comprehensive Test Ban Treaty (CTBT) depends in part on the ability to seismically detect and discriminate between potential clandestine underground nuclear tests and other seismic sources, including earthquakes and mining activities. Regional techniques are necessary to push detection and discrimination levels down to small magnitudes, but existing methods of event discrimination are mainly empirical and show much variability from region to region. The goals of Lawrence Livermore National Laboratory`s (LLNL`s) regional discriminant research are to evaluate the most promising discriminants, improve the understanding of their physical basis and use this information to develop new and more effective discriminants that can be transported to new regions of high monitoring interest. In this report the authors discuss preliminary efforts to geophysically characterize the Middle East and North Africa. They show that the remarkable stability of coda allows one to develop physically based, stable single station magnitude scales in new regions. They then discuss progress to date on evaluating and improving physical understanding and ability to model regional discriminants, focusing on the comprehensive NTS dataset. The authors apply this modeling ability to develop improved discriminants including slopes of P to S ratios. They find combining disparate discriminant techniques is particularly effective in identifying consistent outliers such as shallow earthquakes and mine seismicity. Finally they discuss development and use of new coda and waveform modeling tools to investigate special events.

  17. 1 INTRODUCTION This paper considers seismic resistance for

    E-Print Network [OSTI]

    Spencer Jr., Billie F.

    . The Chinese design code of seismic isolation has been compiled in 1999. The energy dissipation has been widely1 INTRODUCTION This paper considers seismic resistance for structures and seismic control damper and semi-active control using in new design or existed buildings, bridges, facilities and other

  18. STOCHASTIC SEISMIC EMISSION FROM ACOUSTIC GLORIES AND THE QUIET SUN

    E-Print Network [OSTI]

    Braun, Douglas C.

    STOCHASTIC SEISMIC EMISSION FROM ACOUSTIC GLORIES AND THE QUIET SUN A.-C. DONEA1, C. LINDSEY2 and D; accepted 8 January 2000) Abstract. Helioseismic images of multipolar active regions show enhanced seismic'. The acoustic glories contain elements that sustain an average seismic emission 50% greater than similar

  19. A pseudo-spectral method for the simulation of poro-elastic seismic wave propagation in 2D polar coordinates using domain decomposition

    SciTech Connect (OSTI)

    Sidler, Rolf, E-mail: rsidler@gmail.com [Center for Research of the Terrestrial Environment, University of Lausanne, CH-1015 Lausanne (Switzerland)] [Center for Research of the Terrestrial Environment, University of Lausanne, CH-1015 Lausanne (Switzerland); Carcione, Jos M. [Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Borgo Grotta Gigante 42c, 34010 Sgonico, Trieste (Italy)] [Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Borgo Grotta Gigante 42c, 34010 Sgonico, Trieste (Italy); Holliger, Klaus [Center for Research of the Terrestrial Environment, University of Lausanne, CH-1015 Lausanne (Switzerland)] [Center for Research of the Terrestrial Environment, University of Lausanne, CH-1015 Lausanne (Switzerland)

    2013-02-15

    We present a novel numerical approach for the comprehensive, flexible, and accurate simulation of poro-elastic wave propagation in 2D polar coordinates. An important application of this method and its extensions will be the modeling of complex seismic wave phenomena in fluid-filled boreholes, which represents a major, and as of yet largely unresolved, computational problem in exploration geophysics. In view of this, we consider a numerical mesh, which can be arbitrarily heterogeneous, consisting of two or more concentric rings representing the fluid in the center and the surrounding porous medium. The spatial discretization is based on a Chebyshev expansion in the radial direction and a Fourier expansion in the azimuthal direction and a RungeKutta integration scheme for the time evolution. A domain decomposition method is used to match the fluidsolid boundary conditions based on the method of characteristics. This multi-domain approach allows for significant reductions of the number of grid points in the azimuthal direction for the inner grid domain and thus for corresponding increases of the time step and enhancements of computational efficiency. The viability and accuracy of the proposed method has been rigorously tested and verified through comparisons with analytical solutions as well as with the results obtained with a corresponding, previously published, and independently benchmarked solution for 2D Cartesian coordinates. Finally, the proposed numerical solution also satisfies the reciprocity theorem, which indicates that the inherent singularity associated with the origin of the polar coordinate system is adequately handled.

  20. 1 INTRODUCTION Rational and reliable seismic design theories and

    E-Print Network [OSTI]

    Spencer Jr., Billie F.

    to the seismic design of dams to be constructed and the assessment of earthquake safety of existing dams. Many is not almost considered in the seismic design of dams to be constructed and the assessment of earthquake safety1 INTRODUCTION Rational and reliable seismic design theories and analytical methods are substantial

  1. Seismic sources

    DOE Patents [OSTI]

    Green, M.A.; Cook, N.G.W.; McEvilly, T.V.; Majer, E.L.; Witherspoon, P.A.

    1987-04-20

    Apparatus is described for placement in a borehole in the earth, which enables the generation of closely controlled seismic waves from the borehole. Pure torsional shear waves are generated by an apparatus which includes a stator element fixed to the borehole walls and a rotor element which is electrically driven to rapidly oscillate on the stator element to cause reaction forces transmitted through the borehole walls to the surrounding earth. Longitudinal shear waves are generated by an armature that is driven to rapidly oscillate along the axis of the borehole, to cause reaction forces transmitted to the surrounding earth. Pressure waves are generated by electrically driving pistons that press against opposite ends of a hydraulic reservoir that fills the borehole. High power is generated by energizing the elements for more than about one minute. 9 figs.

  2. Why Ricker Wavelets Are Successful in Processing Seismic Data: Towards a Theoretical Explanation

    E-Print Network [OSTI]

    Kreinovich, Vladik

    Why Ricker Wavelets Are Successful in Processing Seismic Data: Towards a Theoretical Explanation, it is important to process seismic data. In processing seismic data, it turns out to be very efficient to describe, computational intelligence techniques are actively used in processing seismic data; see, e.g., [6

  3. Seismic hazard analysis at Rocky Flats Plant

    SciTech Connect (OSTI)

    McGuire, R.K.

    1993-10-01

    A probabilistic seismic hazard analysis is being conducted for the DOE Rocky Flats Plant, Jefferson County, Colorado. This is part of the overall review of the seismic exposure to facilities being conducted by DOE. The study has four major elements. (1) The historical seismicity in Colorado is being reviewed and synthesized to estimate historical rates of earthquake activity in the region of the site. (2) The geologic and tectonic evidence in Colorado and along the Front Range is being reviewed to determine appropriate seismic zones, potentially active faults, and constraints on fault slip rates. (3) Earthquake ground motion equations are being derived based on seismological knowledge of the earth`s crust. Site specific soil amplification factors are also being developed using on-site shear wave velocity measurements. (4) The probability of exceedence of various seismic ground motion levels is being calculated based on the inputs developed on tectonic sources, faults, ground motion, and soil amplification. Deterministic ground motion estimates are also being made. This study is a state-of-the-art analysis of seismic hazard. It incorporates uncertainties in the major aspects governing seismic hazard, and has a documented basis founded on solid data interpretations for the ranges of inputs used. The results will be a valid basis on which to evaluate plant structures, equipment, and components for seismic effects.

  4. SEISMIC ATTENUATION FOR RESERVOIR CHARACTERIZATION

    SciTech Connect (OSTI)

    Joel Walls; M.T. Taner; Naum Derzhi; Gary Mavko; Jack Dvorkin

    2003-10-01

    In this report we will show the fundamental concepts of two different methods to compute seismic energy absorption. The first methods gives and absolute value of Q and is based on computation with minimum phase operators. The second method gives a relative energy loss compared to a background trend. This method is a rapid, qualitative indicator of anomalous absorption and can be combined with other attributes such as band limited acoustic impedance to indicate areas of likely gas saturation.

  5. Towards the Understanding of Induced Seismicity in Enhanced Geothermal...

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

    and Water Injection to Model Stress Evolution in the Reservoir (GFZ) * Estimation of Seismic Hazard and Calculation of Ground Motion (LBNL) Proposed Activity 11 | US DOE...

  6. Infrasonic component of volcano-seismic eruption tremor

    E-Print Network [OSTI]

    Matoza, Robin S; Fee, David

    2014-01-01

    to a subsurface seismic source process, such as the upwardseismic data for understanding wave?elds generated by active volcanic processes [

  7. Geodetic Survey At Central Nevada Seismic Zone Region (Blewitt...

    Open Energy Info (EERE)

    Geodetic Survey At Central Nevada Seismic Zone Region (Blewitt, Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geodetic Survey At...

  8. Geographic Information System At Central Nevada Seismic Zone...

    Open Energy Info (EERE)

    Geographic Information System At Central Nevada Seismic Zone Region (Blewitt, Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  9. Teleseismic-Seismic Monitoring At Valles Caldera - Redondo Geothermal...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Valles Caldera - Redondo Geothermal Area (Steck, Et Al., 1998) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  10. Modeling-Computer Simulations At Central Nevada Seismic Zone...

    Open Energy Info (EERE)

    Modeling-Computer Simulations At Central Nevada Seismic Zone Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  11. Data Acquisition-Manipulation At Central Nevada Seismic Zone...

    Open Energy Info (EERE)

    Data Acquisition-Manipulation At Central Nevada Seismic Zone Region (Coolbaugh, Et Al., 2005 - 2) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  12. Refraction Survey At Central Nevada Seismic Zone Region (Heimgartner...

    Open Energy Info (EERE)

    Refraction Survey At Central Nevada Seismic Zone Region (Heimgartner, Et Al., 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Refraction...

  13. Modeling-Computer Simulations At Central Nevada Seismic Zone...

    Open Energy Info (EERE)

    Modeling-Computer Simulations At Central Nevada Seismic Zone Region (Biasi, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  14. Compound and Elemental Analysis At Central Nevada Seismic Zone...

    Open Energy Info (EERE)

    Compound and Elemental Analysis At Central Nevada Seismic Zone Region (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  15. Compound and Elemental Analysis At Central Nevada Seismic Zone...

    Open Energy Info (EERE)

    Compound and Elemental Analysis At Central Nevada Seismic Zone Region (Laney, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Compound and...

  16. Geographic Information System At Central Nevada Seismic Zone...

    Open Energy Info (EERE)

    Geographic Information System At Central Nevada Seismic Zone Region (Coolbaugh, Et Al., 2005 - 2) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  17. Direct-Current Resistivity Survey At Central Nevada Seismic Zone...

    Open Energy Info (EERE)

    Direct-Current Resistivity Survey At Central Nevada Seismic Zone Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  18. Teleseismic-Seismic Monitoring At Nw Basin & Range Region (Biasi...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Nw Basin & Range Region (Biasi, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  19. Teleseismic-Seismic Monitoring At Walker-Lane Transitional Zone...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Walker-Lane Transitional Zone Region (Biasi, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  20. Teleseismic-Seismic Monitoring At Lassen Volcanic National Park...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Lassen Volcanic National Park Area (Janik & Mclaren, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  1. Teleseismic-Seismic Monitoring At Nw Basin & Range Region (Biasi...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Nw Basin & Range Region (Biasi, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  2. Teleseismic-Seismic Monitoring At Dixie Valley Geothermal Area...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Dixie Valley Geothermal Area (Iovenitti, Et Al., 2013) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  3. Geodetic Survey At Central Nevada Seismic Zone Region (Blewitt...

    Open Energy Info (EERE)

    Geodetic Survey At Central Nevada Seismic Zone Region (Blewitt Et Al, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geodetic Survey At...

  4. Thermal Gradient Holes At Central Nevada Seismic Zone Region...

    Open Energy Info (EERE)

    Thermal Gradient Holes At Central Nevada Seismic Zone Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal Gradient...

  5. Isotopic Analysis At Central Nevada Seismic Zone Region (Kennedy...

    Open Energy Info (EERE)

    Isotopic Analysis At Central Nevada Seismic Zone Region (Kennedy & Van Soest, 2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Isotopic...

  6. Direct-Current Resistivity At Central Nevada Seismic Zone Region...

    Open Energy Info (EERE)

    Direct-Current Resistivity At Central Nevada Seismic Zone Region (Pritchett, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current...

  7. Teleseismic-Seismic Monitoring At Long Valley Caldera Geothermal...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Long Valley Caldera Geothermal Area (Newman, Et Al., 2006) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  8. Geothermometry At Central Nevada Seismic Zone Region (Shevenell...

    Open Energy Info (EERE)

    Geothermometry At Central Nevada Seismic Zone Region (Shevenell & De Rocher, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry...

  9. Geographic Information System At Central Nevada Seismic Zone...

    Open Energy Info (EERE)

    Geographic Information System At Central Nevada Seismic Zone Region (Laney, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic...

  10. Field Mapping At Central Nevada Seismic Zone Region (Shevenell...

    Open Energy Info (EERE)

    Field Mapping At Central Nevada Seismic Zone Region (Shevenell, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Field Mapping At...

  11. Trace Element Analysis At Central Nevada Seismic Zone Region...

    Open Energy Info (EERE)

    Trace Element Analysis At Central Nevada Seismic Zone Region (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace...

  12. Teleseismic-Seismic Monitoring At Walker-Lane Transitional Zone...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Walker-Lane Transitional Zone Region (Biasi, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  13. Teleseismic-Seismic Monitoring At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Northern Basin & Range Region (Biasi, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  14. Teleseismic-Seismic Monitoring At Northern Basin & Range Region...

    Open Energy Info (EERE)

    Teleseismic-Seismic Monitoring At Northern Basin & Range Region (Biasi, Et Al., 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  15. Field Mapping At Central Nevada Seismic Zone Region (Blewitt...

    Open Energy Info (EERE)

    Field Mapping At Central Nevada Seismic Zone Region (Blewitt, Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Field Mapping At...

  16. HANFORD DOUBLE SHELL TANK THERMAL AND SEISMIC PROJECT BUCKLING EVALUATION METHODS AND RESULTS FOR THE PRIMARY TANKS

    SciTech Connect (OSTI)

    MACKEY TC; JOHNSON KI; DEIBLER JE; PILLI SP; RINKER MW; KARRI NK

    2009-01-14

    This report documents a detailed buckling evaluation of the primary tanks in the Hanford double-shell waste tanks (DSTs), which is part of a comprehensive structural review for the Double-Shell Tank Integrity Project. This work also provides information on tank integrity that specifically responds to concerns raised by the Office of Environment, Safety, and Health (ES&H) Oversight (EH-22) during a review of work performed on the double-shell tank farms and the operation of the aging waste facility (AWF) primary tank ventilation system. The current buckling review focuses on the following tasks: (1) Evaluate the potential for progressive anchor bolt failure and the appropriateness of the safety factors that were used for evaluating local and global buckling. The analysis will specifically answer the following questions: (a) Can the EH-22 scenario develop if the vacuum is limited to -6.6-inch water gage (w.g.) by a relief valve? (b) What is the appropriate factor of safety required to protect against buckling if the EH-22 scenario can develop? (c) What is the appropriate factor of safety required to protect against buckling if the EH-22 scenario cannot develop? (2) Develop influence functions to estimate the axial stresses in the primary tanks for all reasonable combinations of tank loads based on detailed finite element analysis. The analysis must account for the variation in design details and operating conditions between the different DSTs. The analysis must also address the imperfection sensitivity of the primary tank to buckling. (3) Perform a detailed buckling analysis to determine the maximum allowable differential pressure for each of the DST primary tanks at the current specified limits on waste temperature, height, and specific gravity. Based on the concrete anchor bolt loads analysis and the small deformations that are predicted at the unfactored limits on vacuum and axial loads, it is very unlikely that the EH-22 scenario (i.e., progressive anchor bolt failure leading to global buckling of the tank under increased vacuum) could occur. After releasing Revision 0 of this report, an independent review of the Double Shell Tanks (DST) Thermal and Operating Loads Analysis (TaLA) combined with the Seismic Analysis was conducted by Dr. Robert P. Kennedy of RPK Structural Mechanics Consulting and Dr. Anestis S. Veletsos of Rice University. Revision I was then issued to address their review comments (included in Appendix D). Additional concerns involving the evaluation of concrete anchor loads and allowables were found during a second review by Drs. Kennedy and Veletsos (see Appendix G). Extensive additional analysis was performed on the anchors, which is detailed by Deibler et al. (2008a, 2008b). The current report (Revision 2) references this recent work, and additional analysis is presented to show that anchor loads do not concentrate significantly in the presence of a local buckle.

  17. On the seismic response of deep-seated rock slope instabilities --Insights from numerical modeling

    E-Print Network [OSTI]

    On the seismic response of deep-seated rock slope instabilities -- Insights from numerical modeling 2015 Accepted 3 April 2015 Available online 15 April 2015 Keywords: Seismic landslide hazard Spectral component of seismic hazard in mountainous regions. While many seismic slope stability analysis methods

  18. Seismic sources

    DOE Patents [OSTI]

    Green, Michael A. (Oakland, CA); Cook, Neville G. W. (Lafayette, CA); McEvilly, Thomas V. (Berkeley, CA); Majer, Ernest L. (El Cirrito, CA); Witherspoon, Paul A. (Berkeley, CA)

    1992-01-01

    Apparatus is described for placement in a borehole in the earth, which enables the generation of closely controlled seismic waves from the borehole. Pure torsional shear waves are generated by an apparatus which includes a stator element fixed to the borehole walls and a rotor element which is electrically driven to rapidly oscillate on the stator element to cause reaction forces transmitted through the borehole walls to the surrounding earth. Logitudinal shear waves are generated by an armature that is driven to rapidly oscillate along the axis of the borehole relative to a stator that is clamped to the borehole, to cause reaction forces transmitted to the surrounding earth. Pressure waves are generated by electrically driving pistons that press against opposite ends of a hydraulic reservoir that fills the borehole. High power is generated by energizing the elements at a power level that causes heating to over 150.degree. C. within one minute of operation, but energizing the elements for no more than about one minute.

  19. Monitoring Seismic Attenuation Changes Using a 4D Relative Spectrum Method in Athabsca Heavy Oil Reservoir, Canada

    E-Print Network [OSTI]

    Shabelansky, Andrey Hanan

    2012-01-01

    Heating heavy oil reservoirs is a common method for reducing the high viscosity of heavy oil and thus increasing the recovery factor. Monitoring these changes in the reservoir is essential for delineating the heated region ...

  20. Methods of increasing secretion of polypeptides having biological activity

    DOE Patents [OSTI]

    Merino, Sandra

    2015-04-14

    The present invention relates to methods for producing a secreted polypeptide having biological activity, comprising: (a) transforming a fungal host cell with a fusion protein construct encoding a fusion protein, which comprises: (i) a first polynucleotide encoding a signal peptide; (ii) a second polynucleotide encoding at least a catalytic domain of an endoglucanase or a portion thereof; and (iii) a third polynucleotide encoding at least a catalytic domain of a polypeptide having biological activity; wherein the signal peptide and at least the catalytic domain of the endoglucanase increases secretion of the polypeptide having biological activity compared to the absence of at least the catalytic domain of the endoglucanase; (b) cultivating the transformed fungal host cell under conditions suitable for production of the fusion protein; and (c) recovering the fusion protein, a component thereof, or a combination thereof, having biological activity, from the cultivation medium.

  1. Methods of increasing secretion of polypeptides having biological activity

    DOE Patents [OSTI]

    Merino, Sandra

    2014-10-28

    The present invention relates to methods for producing a secreted polypeptide having biological activity, comprising: (a) transforming a fungal host cell with a fusion protein construct encoding a fusion protein, which comprises: (i) a first polynucleotide encoding a signal peptide; (ii) a second polynucleotide encoding at least a catalytic domain of an endoglucanase or a portion thereof; and (iii) a third polynucleotide encoding at least a catalytic domain of a polypeptide having biological activity; wherein the signal peptide and at least the catalytic domain of the endoglucanase increases secretion of the polypeptide having biological activity compared to the absence of at least the catalytic domain of the endoglucanase; (b) cultivating the transformed fungal host cell under conditions suitable for production of the fusion protein; and (c) recovering the fusion protein, a component thereof, or a combination thereof, having biological activity, from the cultivation medium.

  2. Methods of increasing secretion of polypeptides having biological activity

    DOE Patents [OSTI]

    Merino, Sandra

    2013-10-01

    The present invention relates to methods for producing a secreted polypeptide having biological activity, comprising: (a) transforming a fungal host cell with a fusion protein construct encoding a fusion protein, which comprises: (i) a first polynucleotide encoding a signal peptide; (ii) a second polynucleotide encoding at least a catalytic domain of an endoglucanase or a portion thereof; and (iii) a third polynucleotide encoding at least a catalytic domain of a polypeptide having biological activity; wherein the signal peptide and at least the catalytic domain of the endoglucanase increases secretion of the polypeptide having biological activity compared to the absence of at least the catalytic domain of the endoglucanase; (b) cultivating the transformed fungal host cell under conditions suitable for production of the fusion protein; and (c) recovering the fusion protein, a component thereof, or a combination thereof, having biological activity, from the cultivation medium.

  3. Methods of increasing secretion of polypeptides having biological activity

    DOE Patents [OSTI]

    Merino, Sandra

    2014-05-27

    The present invention relates to methods for producing a secreted polypeptide having biological activity, comprising: (a) transforming a fungal host cell with a fusion protein construct encoding a fusion protein, which comprises: (i) a first polynucleotide encoding a signal peptide; (ii) a second polynucleotide encoding at least a catalytic domain of an endoglucanase or a portion thereof; and (iii) a third polynucleotide encoding at least a catalytic domain of a polypeptide having biological activity; wherein the signal peptide and at least the catalytic domain of the endoglucanase increases secretion of the polypeptide having biological activity compared to the absence of at least the catalytic domain of the endoglucanase; (b) cultivating the transformed fungal host cell under conditions suitable for production of the fusion protein; and (c) recovering the fusion protein, a component thereof, or a combination thereof, having biological activity, from the cultivation medium.

  4. Study of induced seismicity for reservoir characterization

    E-Print Network [OSTI]

    Li, Junlun, Ph. D. Massachusetts Institute of Technology

    2013-01-01

    The main goal of the thesis is to characterize the attributes of conventional and unconventional reservoirs through passive seismicity. The dissertation is comprised of the development and applications of three new methods, ...

  5. Reservoir fracture characterizations from seismic scattered waves

    E-Print Network [OSTI]

    Fang, Xinding

    2012-01-01

    The measurements of fracture parameters, such as fracture orientation, fracture density and fracture compliance, in a reservoir is very important for field development and exploration. Traditional seismic methods for ...

  6. SEISMIC ATTENUATION FOR RESERVOIR CHARACTERIZATION

    SciTech Connect (OSTI)

    Joel Walls; M.T. Taner; Naum Derzhi; Gary Mavko; Jack Dvorkin

    2003-12-01

    We have developed and tested technology for a new type of direct hydrocarbon detection. The method uses inelastic rock properties to greatly enhance the sensitivity of surface seismic methods to the presence of oil and gas saturation. These methods include use of energy absorption, dispersion, and attenuation (Q) along with traditional seismic attributes like velocity, impedance, and AVO. Our approach is to combine three elements: (1) a synthesis of the latest rock physics understanding of how rock inelasticity is related to rock type, pore fluid types, and pore microstructure, (2) synthetic seismic modeling that will help identify the relative contributions of scattering and intrinsic inelasticity to apparent Q attributes, and (3) robust algorithms that extract relative wave attenuation attributes from seismic data. This project provides: (1) Additional petrophysical insight from acquired data; (2) Increased understanding of rock and fluid properties; (3) New techniques to measure reservoir properties that are not currently available; and (4) Provide tools to more accurately describe the reservoir and predict oil location and volumes. These methodologies will improve the industry's ability to predict and quantify oil and gas saturation distribution, and to apply this information through geologic models to enhance reservoir simulation. We have applied for two separate patents relating to work that was completed as part of this project.

  7. A Study of SSI Effects Incorporating Seismic Wave Incoherence...

    Office of Environmental Management (EM)

    Costantino and Associates www.cjcassoc.com A Study of SSI Effects Incorporating Seismic Wave Incoherence within the DOE Complex More Documents & Publications Verification Method...

  8. Seismic velocity estimation from time migration

    E-Print Network [OSTI]

    Cameron, Maria Kourkina

    2007-01-01

    Seismic images . . . . . . . . . . . . . . . . .Algorithms producing the seismic velocities from thethe Dix velocities and the true seismic velocities in 2D . .

  9. Seismic Performance Assessment in Dense Urban Environments

    E-Print Network [OSTI]

    Mason, Henry Benjamin

    2011-01-01

    Kinematic interaction . . 4.4.2 Seismic footing response 6Deterministic seismic hazard analysis . . . . . . . . . .Probabilistic seismic hazard analysis . . . . . . . . .

  10. Applying petroleum geophysics to astrophysics: Quantitative 4D seismic study of the solar interior

    E-Print Network [OSTI]

    Crawford, Ian

    Applying petroleum geophysics to astrophysics: Quantitative 4D seismic study, is to a significant extent based on tomographic methods developed in geophysics. The proposed time-lapse seismic methods developed in petroleum geophysics offer the next

  11. Abstract--The use of magnetorheological (MR) dampers for semi-active control of structures subject to seismic, wind,

    E-Print Network [OSTI]

    Stanford University

    failure, variations in ground excitation, variation in peak ground acceleration, and controller delays. IAbstract--The use of magnetorheological (MR) dampers for semi-active control of structures subject of the proposed feedback control laws have been based on modern linear systems control theory, e.g. linear

  12. SEISMIC ATTENUATION FOR RESERVOIR CHARACTERIZATION

    SciTech Connect (OSTI)

    Joel Walls; M.T. Taner; Gary Mavko; Jack Dvorkin

    2002-01-01

    In Section 1 of this first report we will describe the work we are doing to collect and analyze rock physics data for the purpose of modeling seismic attenuation from other measurable quantities such as porosity, water saturation, clay content and net stress. This work and other empirical methods to be presented later, will form the basis for ''Q pseudo-well modeling'' that is a key part of this project. In Section 2 of this report, we will show the fundamentals of a new method to extract Q, dispersion, and attenuation from field seismic data. The method is called Gabor-Morlet time-frequency decomposition. This technique has a number of advantages including greater stability and better time resolution than spectral ratio methods.

  13. Spatial Orientation and Distribution of Reservoir Fractures from Scattered Seismic Energy

    E-Print Network [OSTI]

    Vetri, Laura

    2006-01-01

    We present the details of a new method for determining the reflection and scattering characteristics of seismic

  14. Method for preparing high specific activity 177Lu

    DOE Patents [OSTI]

    Mirzadeh, Saed; Du, Miting; Beets, Arnold L.; Knapp, Jr., Furn F.

    2004-04-06

    A method of separating lutetium from a solution containing Lu and Yb, particularly reactor-produced .sup.177 Lu and .sup.177 Yb, includes the steps of: providing a chromatographic separation apparatus containing LN resin; loading the apparatus with a solution containing Lu and Yb; and eluting the apparatus to chromatographically separate the Lu and the Yb in order to produce high-specific-activity .sup.177 Yb.

  15. Seismic reflection investigations of sinkholes beneath Interstate Highway 70 in Kansas

    E-Print Network [OSTI]

    Steeples, Don W.; Knapp, Ralph W.; McElwee, Carl D.

    1986-02-01

    Seismic reflection studies were performed across actively developing sinkholes located astride Interstate Highway 70 in Russell County, Kansas. Results indicate that high?resolution seismic reflection surveys are useful in the subsurface...

  16. Seismic behavior in central Taiwan: Response to stress evolution following the 1999 Mw 7.6 Chi-Chi earthquake

    E-Print Network [OSTI]

    Wu, Yih-Min

    Seismic behavior in central Taiwan: Response to stress evolution following the 1999 Mw 7.6 Chi of seismicity occurred in the Nantou region of central Taiwan. Among the seismic activities, eight Mw P 5 magnitudes took place from 1900 to 1998. Since the seismicity rate during the Chi-Chi postseismic period has

  17. Robust activation method for negative electron affinity photocathodes

    DOE Patents [OSTI]

    Mulhollan, Gregory A. (Dripping Springs, TX); Bierman, John C. (Austin, TX)

    2011-09-13

    A method by which photocathodes(201), single crystal, amorphous, or otherwise ordered, can be surface modified to a robust state of lowered and in best cases negative, electron affinity has been discovered. Conventional methods employ the use of Cs(203) and an oxidizing agent(207), typically carried by diatomic oxygen or by more complex molecules, for example nitrogen trifluoride, to achieve a lowered electron affinity(404). In the improved activation method, a second alkali, other than Cs(205), is introduced onto the surface during the activation process, either by co-deposition, yo-yo, or sporadic or intermittent application. Best effect for GaAs photocathodes has been found through the use of Li(402) as the second alkali, though nearly the same effect can be found by employing Na(406). Suitable photocathodes are those which are grown, cut from boules, implanted, rolled, deposited or otherwise fabricated in a fashion and shape desired for test or manufacture independently supported or atop a support structure or within a framework or otherwise affixed or suspended in the place and position required for use.

  18. Method for monitoring stack gases for uranium activity

    DOE Patents [OSTI]

    Beverly, Claude R. (Paducah, KY); Ernstberger, Harold G. (Paducah, KY)

    1988-01-01

    A method for monitoring the stack gases of a purge cascade of a gaseous diffusion plant for uranium activity. A sample stream is taken from the stack gases and contacted with a volume of moisture-laden air for converting trace levels of uranium hexafluoride, if any, in the stack gases into particulate uranyl fluoride. A continuous strip of filter paper from a supply roll is passed through this sampling stream to intercept and gather any uranyl fluoride in the sampling stream. This filter paper is then passed by an alpha scintillation counting device where any radioactivity on the filter paper is sensed so as to provide a continuous monitoring of the gas stream for activity indicative of the uranium content in the stack gases.

  19. Method for monitoring stack gases for uranium activity

    DOE Patents [OSTI]

    Beverly, C.R.; Ernstberger, E.G.

    1985-07-03

    A method for monitoring the stack gases of a purge cascade of gaseous diffusion plant for uranium activity. A sample stream is taken from the stack gases and contacted with a volume of moisture-laden air for converting trace levels of uranium hexafluoride, if any, in the stack gases into particulate uranyl fluoride. A continuous strip of filter paper from a supply roll is passed through this sampling stream to intercept and gather any uranyl fluoride in the sampling stream. This filter paper is then passed by an alpha scintillation counting device where any radioactivity on the filter paper is sensed so as to provide a continuous monitoring of the gas stream for activity indicative of the uranium content in the stack gases. 1 fig.

  20. Seismic Structure And Seismicity Of The Cooling Lava Lake Of...

    Open Energy Info (EERE)

    Seismic Structure And Seismicity Of The Cooling Lava Lake Of Kilauea Iki, Hawaii Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Seismic...

  1. Using Radar and Seismic Methods for the Determination of Ice Column Properties and Basal Conditions at Jakobshavn Isbr and the NEEM Drill Site

    E-Print Network [OSTI]

    Velez Gonzalez, Jose Antonio

    2015-05-31

    measurements. Glacier basal drag is also an important, and difficult to predict, property that influences glacier flow. For this investigation I re-processed a 10 km-long high-resolution reflection seismic line at Jakobshavn Isbr, Greenland, using an iterative...

  2. Tensor analysis methods for activity characterization in spatiotemporal data

    SciTech Connect (OSTI)

    Haass, Michael Joseph; Van Benthem, Mark Hilary; Ochoa, Edward M.

    2014-03-01

    Tensor (multiway array) factorization and decomposition offers unique advantages for activity characterization in spatio-temporal datasets because these methods are compatible with sparse matrices and maintain multiway structure that is otherwise lost in collapsing for regular matrix factorization. This report describes our research as part of the PANTHER LDRD Grand Challenge to develop a foundational basis of mathematical techniques and visualizations that enable unsophisticated users (e.g. users who are not steeped in the mathematical details of matrix algebra and mulitway computations) to discover hidden patterns in large spatiotemporal data sets.

  3. Compositions and methods for adoptive and active immunotherapy

    DOE Patents [OSTI]

    Fahmy, Tarek; Steenblock, Erin

    2014-01-14

    Modular aAPCs and methods of their manufacture and use are provided. The modular aAPCs are constructed from polymeric microparticles. The aAPCs include encapsulated cytokines and coupling agents which modularly couple functional elements including T cell receptor activators, co-stimulatory molecules and adhesion molecules to the particle. The ability of these aAPCs to release cytokines in a controlled manner, coupled with their modular nature and ease of ligand attachment, results in an ideal, tunable APC capable of stimulating and expanding primary T cells.

  4. Sensitivity evaluation of dynamic speckle activity measurements using clustering methods

    SciTech Connect (OSTI)

    Etchepareborda, Pablo; Federico, Alejandro; Kaufmann, Guillermo H.

    2010-07-01

    We evaluate and compare the use of competitive neural networks, self-organizing maps, the expectation-maximization algorithm, K-means, and fuzzy C-means techniques as partitional clustering methods, when the sensitivity of the activity measurement of dynamic speckle images needs to be improved. The temporal history of the acquired intensity generated by each pixel is analyzed in a wavelet decomposition framework, and it is shown that the mean energy of its corresponding wavelet coefficients provides a suited feature space for clustering purposes. The sensitivity obtained by using the evaluated clustering techniques is also compared with the well-known methods of Konishi-Fujii, weighted generalized differences, and wavelet entropy. The performance of the partitional clustering approach is evaluated using simulated dynamic speckle patterns and also experimental data.

  5. USING MICRO-SEISMICITY AND SEISMIC VELOCITIES TO MAP SUBSURFACE...

    Open Energy Info (EERE)

    USING MICRO-SEISMICITY AND SEISMIC VELOCITIES TO MAP SUBSURFACE GEOLOGIC AND HYDROLOGIC STRUCTURE WITHIN THE COSO GEOTHERMAL FIELD, CALIFORNIA Jump to: navigation, search OpenEI...

  6. Seismicity and seismic stress in the Coso Range, Coso geothermal...

    Open Energy Info (EERE)

    Seismicity and seismic stress in the Coso Range, Coso geothermal field, and Indian Wells Valley region, Southeast-Central California Jump to: navigation, search OpenEI Reference...

  7. Using Micro-Seismicity and Seismic Velocities to Map Subsurface...

    Open Energy Info (EERE)

    Using Micro-Seismicity and Seismic Velocities to Map Subsurface Geologic and Hydrologic Structure Within the Coso Geothermal Field California Jump to: navigation, search OpenEI...

  8. Seismic Emissions from a Highly Impulsive M6.7 Solar Flare

    E-Print Network [OSTI]

    J. C. Martinez-Oliveros; H. Moradi; A-C. Donea

    2008-01-09

    On 10 March 2001 the active region NOAA 9368 produced an unusually impulsive solar flare in close proximity to the solar limb. This flare has previously been studied in great detail, with observations classifying it as a type 1 white-light flare with a very hard spectrum in hard X-rays. The flare was also associated with a type II radio burst and coronal mass ejection. The flare emission characteristics appeared to closely correspond with previous instances of seismic emission from acoustically active flares. Using standard local helioseismic methods, we identified the seismic signatures produced by the flare that, to date, is the least energetic (in soft X-rays) of the flares known to have generated a detectable acoustic transient. Holographic analysis of the flare shows a compact acoustic source strongly correlated with the impulsive hard X-ray, visible continuum, and radio emission. Time-distance diagrams of the seismic waves emanating from the flare region also show faint signatures, mainly in the eastern sector of the active region. The strong spatial coincidence between the seismic source and the impulsive visible continuum emission reinforces the theory that a substantial component of the seismic emission seen is a result of sudden heating of the low photosphere associated with the observed visible continuum emission. Furthermore, the low-altitude magnetic loop structure inferred from potential--field extrapolations in the flaring region suggests that there is a significant inverse correlation between the seismicity of a flare and the height of the magnetic loops that conduct the particle beams from the corona.

  9. Geophysical Prospecting, 2011, 59, 609626 doi: 10.1111/j.1365-2478.2010.00937.x Uncertainty analysis for the integration of seismic and controlled

    E-Print Network [OSTI]

    Snieder, Roel

    , there is an increasing interest in the integration of the seismic and CSEM methods in deep ma- rine exploration (Harris@mines.edu an effective complementary tool when combined with seismic exploration. The seismic and CSEM methods are disparate exploration techniques that are sensitive to different medium properties: the seismic method

  10. Seismic tomography and surface deformation in Krsuvk, SW Iceland

    E-Print Network [OSTI]

    Lu, Jing, S.M. Massachusetts Institute of Technology

    2013-01-01

    The Krsuvk region of southwestern Iceland is a region of high potential for geothermal energy that is currently experiencing seismic swarm activity and active surface deformation. Understanding the subsurface structure ...

  11. Seismic Design Expectations Report

    Office of Environmental Management (EM)

    flood, and lightning. This report only focuses on the seismic design expectations. NPH safety requirements are described in 10 CFR Part 830, Nuclear Safety Management, DOE O...

  12. Seismic Imaging and Monitoring

    SciTech Connect (OSTI)

    Huang, Lianjie

    2012-07-09

    I give an overview of LANL's capability in seismic imaging and monitoring. I present some seismic imaging and monitoring results, including imaging of complex structures, subsalt imaging of Gulf of Mexico, fault/fracture zone imaging for geothermal exploration at the Jemez pueblo, time-lapse imaging of a walkway vertical seismic profiling data for monitoring CO{sub 2} inject at SACROC, and microseismic event locations for monitoring CO{sub 2} injection at Aneth. These examples demonstrate LANL's high-resolution and high-fidelity seismic imaging and monitoring capabilities.

  13. The effect of topography on the wavelet response of seismic arrays

    E-Print Network [OSTI]

    Al-Shuhail, Abdullatif Abdulrahman

    1993-01-01

    Analyzing seismic arrays using their responses to wavelets provides a more convenient and direct method of analysis than using their conventional time-harmonic responses. In this study, the effect of topography on the wavelet response of seismic...

  14. Method for regeneration and activity improvement of syngas conversion catalyst

    DOE Patents [OSTI]

    Lucki, Stanley J. (Runnemede, NJ); Brennan, James A. (Cherry Hill, NJ)

    1980-01-01

    A method is disclosed for the treatment of single particle iron-containing syngas (synthes.s gas) conversion catalysts comprising iron, a crystalline acidic aluminosilicate zeolite having a silica to alumina ratio of at least 12, a pore size greater than about 5 Angstrom units and a constraint index of about 1-12 and a matrix. The catalyst does not contain promoters and the treatment is applicable to either the regeneration of said spent single particle iron-containing catalyst or for the initial activation of fresh catalyst. The treatment involves air oxidation, hydrogen reduction, followed by a second air oxidation and contact of the iron-containing single particle catalyst with syngas prior to its use for the catalytic conversion of said syngas. The single particle iron-containing catalysts are prepared from a water insoluble organic iron compound.

  15. Seismic mass Top electrode

    E-Print Network [OSTI]

    Kraft, Michael

    assembly process. For the measurements of the physical dimensions of the seismic mass a micrometer was usedSeismic mass Top electrode Bottom electrode x C1 C2 Chapter 4: The Micromachined Sensing Element supplied by Druck, Ltd., Groby, Leics. The manufacturing process at Druck was still in its experimental

  16. Optimal Seismic Network Density for Earthquake Early Warning: A Case

    E-Print Network [OSTI]

    Allen, Richard M.

    Optimal Seismic Network Density for Earthquake Early Warning: A Case Study from California by H and the public actively use early warning information is a crucial factor in early warning system design (Aktas detection and alert-filtering algorithms; and (d) well-developed seismic networks with improved station

  17. Overview Of Electromagnetic Methods Applied In Active Volcanic...

    Open Energy Info (EERE)

    Activities Activities (7) Aeromagnetic Survey At Clear Lake Area (Skokan, 1993) Direct-Current Resistivity At Clear Lake Area (Skokan, 1993) Direct-Current Resistivity...

  18. Fracture Properties From Seismic Scattering

    E-Print Network [OSTI]

    Burns, Daniel R.

    2007-01-01

    Fractures scatter seismic energy and this energy can be analyzed to provide information about fracture

  19. Seismic anisotropy in exploration and reservoir characterization: An overview

    E-Print Network [OSTI]

    Tsvankin, Ilya

    range of seismic methods. In particular, vertical and tilted transverse isotropy are currently treated vertical-seis- mic-profiling VSP surveys, moveout inversion of wide-azi- muth data, amplitudeSeismic anisotropy in exploration and reservoir characterization: An overview Ilya Tsvankin1

  20. Machine-learning Based Automated Fault Detection in Seismic Chiyuan Zhang and Charlie Frogner (MIT),

    E-Print Network [OSTI]

    Poggio, Tomaso

    Machine-learning Based Automated Fault Detection in Seismic Traces Chiyuan Zhang and Charlie no seismic data has been migrated. Our novel method is based on machine learning tech- niques and can a machine learning approach: We generate a set of seismic traces from velocity models containing faults

  1. A sequential Bayesian approach for inverting elastic seismic data in the frequency-ray parameter domain

    E-Print Network [OSTI]

    Chen, Jinsong

    -stacking) is a discretized Radom transform that converts seismic profiles recorded as a function of time and offsets on the vertical delay time and developed a Gauss-Newton based method to invert seismic data in the frequencyA sequential Bayesian approach for inverting elastic seismic data in the frequency-ray parameter

  2. Seismic data restoration via data-driven tight frame Jingwei Liang1

    E-Print Network [OSTI]

    Zhang, Xiaoqun

    Seismic data restoration via data-driven tight frame Jingwei Liang1 , Jianwei Ma2 , and Xiaoqun Zhang3 ABSTRACT Restoration/interpolation of missing traces plays a crucial role in the seismic data regularization method for seismic data restoration. The main idea of the data-driven tight frame (TF

  3. Seismic attenuation due to wave-induced flow S. R. Pride

    E-Print Network [OSTI]

    Santos, Juan

    Seismic attenuation due to wave-induced flow S. R. Pride Earth Sciences Division, Lawrence Berkeley that squirt flow is incapable of explaining the measured level of loss (102 seismic enough attenuation to explain the field data. INDEX TERMS: 0935 Exploration Geophysics: Seismic methods

  4. Idaho National Laboratory (INL) Seismic Initiative | Department...

    Office of Environmental Management (EM)

    Initiative Idaho National Laboratory (INL) Seismic Initiative Presentation from the May 2015 Seismic Lessons-Learned Panel Meeting. INL Seismic Initiative More Documents &...

  5. Aspects of earthquake triggering and seismicity clustering /

    E-Print Network [OSTI]

    Chen, Xiaowei

    2013-01-01

    relocated catalog. We process the seismic waveforms tolink between seismic events and calving processes in the twobetween seismic events and glacier sliding processes (e.g. ,

  6. Resonant seismic emission of subsurface objects

    E-Print Network [OSTI]

    Korneev, Valeri A.

    2010-01-01

    E . , and S. Keydar, 1998, Seismic monitoring of diffractionthe barrel. The Resonant Seismic Emission Source ReceiverFigure 1. Geometry o f the seismic experiment to locate a

  7. Seismic demands in precast concrete diaphragms

    E-Print Network [OSTI]

    Schoettler, Matthew John

    2010-01-01

    and Mander, J. B. (2003). Seismic Performance of PrecastState-of-the-Art Report on Seismic Resistance of Prestresseddevelopment of a diaphragm seismic design methodology, PCI

  8. SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES 1 SERIES Final Workshop , Ispra, 28-30 May 2013

    E-Print Network [OSTI]

    SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES 1 SERIES Final Workshop , Ispra, 28-30 May 2013 SERIES Networking Activities: Distributed database and Qualification of Research Infrastructures Opening remarks Pierre Pegon (JRC) #12;SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN

  9. Short-Period Seismic Noise in Vorkuta (Russia)

    SciTech Connect (OSTI)

    Kishkina, S B; Spivak, A A; Sweeney, J J

    2008-05-15

    Cultural development of new subpolar areas of Russia is associated with a need for detailed seismic research, including both mapping of regional seismicity and seismic monitoring of specific mining enterprises. Of special interest are the northern territories of European Russia, including shelves of the Kara and Barents Seas, Yamal Peninsula, and the Timan-Pechora region. Continuous seismic studies of these territories are important now because there is insufficient seismological knowledge of the area and an absence of systematic data on the seismicity of the region. Another task of current interest is the necessity to consider the seismic environment in the design, construction, and operation of natural gas extracting enterprises such as the construction of the North European Gas Pipeline. Issues of scientific importance for seismic studies in the region are the complex geodynamical setting, the presence of permafrost, and the complex tectonic structure. In particular, the Uralian Orogene (Fig. 1) strongly affects the propagation of seismic waves. The existing subpolar seismic stations [APA (67,57{sup o}N; 33,40{sup o}E), LVZ (67,90{sup o}N; 34,65{sup o}E), and NRIL (69,50{sup o}N; 88,40{sup o}E)] do not cover the extensive area between the Pechora and Ob Rivers (Fig. 1). Thus seismic observations in the Vorkuta area, which lies within the area of concern, represent a special interest. Continuous recording at a seismic station near the city of Vorkuta (67,50{sup o}N; 64,11{sup o}E) [1] has been conducted since 2005 for the purpose of regional seismic monitoring and, more specifically, detection of seismic signals caused by local mining enterprises. Current surveys of local seismic noise [7,8,9,11], are particularly aimed at a technical survey for the suitability of the site for installation of a small-aperture seismic array, which would include 10-12 recording instruments, with the Vorkuta seismic station as the central element. When constructed, this seismic array will considerably improve the recording capacity of regional and local seismic events. It will allow detection of signatures of seismic waves propagating in submeridional and sublatitudinal directions. The latter is of special interest not only to access the influence of the Urals on propagation patterns of seismic waves, but also to address other questions, such as the structure and dynamic characteristics of the internal dynamo of the Earth [9,13]. Recording seismic waves at low angular distances from seismically active subpolar zones will allow us to collect data on vortical and convective movements in subpolar lithosphere blocks and at the boundary of the inner core of the Earth, possibly giving essential clues to the modeling of the Earth's electromagnetic field [3,13]. The present study considers basic features of seismic noise at the Vorkuta station obtained through the analysis of seismic records from March, 2006 till December, 2007.

  10. First Quarter Hanford Seismic Report for Fiscal Year 2009

    SciTech Connect (OSTI)

    Rohay, Alan C.; Sweeney, Mark D.; Hartshorn, Donald C.; Clayton, Ray E.; Devary, Joseph L.

    2009-03-15

    The Hanford Seismic Assessment Program (HSAP) provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network for the U.S. Department of Energy and its contractors. The HSAP is responsible for locating and identifying sources of seismic activity and monitoring changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by the Hanford Site for waste management, natural phenomena hazards assessments, and engineering design and construction. In addition, the HSAP works with the Hanford Site Emergency Services Organization to provide assistance in the event of a significant earthquake on the Hanford Site. The Hanford Seismic Network and the Eastern Washington Regional Network consist of 44 individual sensor sites and 15 radio relay sites maintained by the Hanford Seismic Assessment Team. This includes three recently acquired Transportable Array stations located at Cold Creek, Didier Farms, and Phinney Hill. For the Hanford Seismic Network, ten local earthquakes were recorded during the first quarter of fiscal year 2009. All earthquakes were considered as minor with magnitudes (Mc) less than 1.0. Two earthquakes were located at shallow depths (less than 4 km), most likely in the Columbia River basalts; five earthquakes at intermediate depths (between 4 and 9 km), most likely in the sub-basalt sediments); and three earthquakes were located at depths greater than 9 km, within the basement. Geographically, four earthquakes occurred in known swarm areas and six earthquakes were classified as random events.

  11. First Quarter Hanford Seismic Report for Fiscal Year 2011

    SciTech Connect (OSTI)

    Rohay, Alan C.; Sweeney, Mark D.; Clayton, Ray E.; Devary, Joseph L.

    2011-03-31

    The Hanford Seismic Assessment Program (HSAP) provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network for the U.S. Department of Energy and its contractors. The HSAP is responsible for locating and identifying sources of seismic activity and monitoring changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by the Hanford Site for waste management, natural phenomena hazards assessments, and engineering design and construction. In addition, the HSAP works with the Hanford Site Emergency Services Organization to provide assistance in the event of a significant earthquake on the Hanford Site. The Hanford Seismic Network and the Eastern Washington Regional Network consist of 44 individual sensor sites and 15 radio relay sites maintained by the Hanford Seismic Assessment Team. The Hanford Seismic Network recorded 16 local earthquakes during the first quarter of FY 2011. Six earthquakes were located at shallow depths (less than 4 km), seven earthquakes at intermediate depths (between 4 and 9 km), most likely in the pre-basalt sediments, and three earthquakes were located at depths greater than 9 km, within the basement. Geographically, thirteen earthquakes were located in known swarm areas and three earthquakes were classified as random events. The highest magnitude event (1.8 Mc) was recorded on October 19, 2010 at depth 17.5 km with epicenter located near the Yakima River between the Rattlesnake Mountain and Horse Heaven Hills swarm areas.

  12. Central and Eastern United States (CEUS) Seismic Source Characterization (SSC) for Nuclear Facilities Project

    SciTech Connect (OSTI)

    Kevin J. Coppersmith; Lawrence A. Salomone; Chris W. Fuller; Laura L. Glaser; Kathryn L. Hanson; Ross D. Hartleb; William R. Lettis; Scott C. Lindvall; Stephen M. McDuffie; Robin K. McGuire; Gerry L. Stirewalt; Gabriel R. Toro; Robert R. Youngs; David L. Slayter; Serkan B. Bozkurt; Randolph J. Cumbest; Valentina Montaldo Falero; Roseanne C. Perman' Allison M. Shumway; Frank H. Syms; Martitia P. Tuttle

    2012-01-31

    This report describes a new seismic source characterization (SSC) model for the Central and Eastern United States (CEUS). It will replace the Seismic Hazard Methodology for the Central and Eastern United States, EPRI Report NP-4726 (July 1986) and the Seismic Hazard Characterization of 69 Nuclear Plant Sites East of the Rocky Mountains, Lawrence Livermore National Laboratory Model, (Bernreuter et al., 1989). The objective of the CEUS SSC Project is to develop a new seismic source model for the CEUS using a Senior Seismic Hazard Analysis Committee (SSHAC) Level 3 assessment process. The goal of the SSHAC process is to represent the center, body, and range of technically defensible interpretations of the available data, models, and methods. Input to a probabilistic seismic hazard analysis (PSHA) consists of both seismic source characterization and ground motion characterization. These two components are used to calculate probabilistic hazard results (or seismic hazard curves) at a particular site. This report provides a new seismic source model. Results and Findings The product of this report is a regional CEUS SSC model. This model includes consideration of an updated database, full assessment and incorporation of uncertainties, and the range of diverse technical interpretations from the larger technical community. The SSC model will be widely applicable to the entire CEUS, so this project uses a ground motion model that includes generic variations to allow for a range of representative site conditions (deep soil, shallow soil, hard rock). Hazard and sensitivity calculations were conducted at seven test sites representative of different CEUS hazard environments. Challenges and Objectives The regional CEUS SSC model will be of value to readers who are involved in PSHA work, and who wish to use an updated SSC model. This model is based on a comprehensive and traceable process, in accordance with SSHAC guidelines in NUREG/CR-6372, Recommendations for Probabilistic Seismic Hazard Analysis: Guidance on Uncertainty and Use of Experts. The model will be used to assess the present-day composite distribution for seismic sources along with their characterization in the CEUS and uncertainty. In addition, this model is in a form suitable for use in PSHA evaluations for regulatory activities, such as Early Site Permit (ESPs) and Combined Operating License Applications (COLAs). Applications, Values, and Use Development of a regional CEUS seismic source model will provide value to those who (1) have submitted an ESP or COLA for Nuclear Regulatory Commission (NRC) review before 2011; (2) will submit an ESP or COLA for NRC review after 2011; (3) must respond to safety issues resulting from NRC Generic Issue 199 (GI-199) for existing plants and (4) will prepare PSHAs to meet design and periodic review requirements for current and future nuclear facilities. This work replaces a previous study performed approximately 25 years ago. Since that study was completed, substantial work has been done to improve the understanding of seismic sources and their characterization in the CEUS. Thus, a new regional SSC model provides a consistent, stable basis for computing PSHA for a future time span. Use of a new SSC model reduces the risk of delays in new plant licensing due to more conservative interpretations in the existing and future literature. Perspective The purpose of this study, jointly sponsored by EPRI, the U.S. Department of Energy (DOE), and the NRC was to develop a new CEUS SSC model. The team assembled to accomplish this purpose was composed of distinguished subject matter experts from industry, government, and academia. The resulting model is unique, and because this project has solicited input from the present-day larger technical community, it is not likely that there will be a need for significant revision for a number of years. See also Sponsors Perspective for more details. The goal of this project was to implement the CEUS SSC work plan for developing a regional CEUS SSC model. The work plan, formulated by the project manager and a

  13. Second and Third Quarter Hanford Seismic Report for Fiscal Year 2001

    SciTech Connect (OSTI)

    Hartshorn, Donald C.; Reidel, Stephen P.; Rohay, Alan C.; Valenta, Michelle M.

    2001-09-28

    This report describes the seismic activity on the Hanford Site during the 2nd and 3rd quarters of FY01

  14. Single-Well and Cross-Well Seismic At Salt Wells Area (Bureau...

    Open Energy Info (EERE)

    Single-Well and Cross-Well Seismic At Salt Wells Area (Bureau of Land Management, 2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  15. Seismic Safety Study

    SciTech Connect (OSTI)

    Tokarz, F J; Coats, D W

    2006-05-16

    During the past three decades, the Laboratory has been proactive in providing a seismically safe working environment for its employees and the general public. Completed seismic upgrades during this period have exceeded $30M with over 24 buildings structurally upgraded. Nevertheless, seismic questions still frequently arise regarding the safety of existing buildings. To address these issues, a comprehensive study was undertaken to develop an improved understanding of the seismic integrity of the Laboratory's entire building inventory at the Livermore Main Site and Site 300. The completed study of February 2005 extended the results from the 1998 seismic safety study per Presidential Executive Order 12941, which required each federal agency to develop an inventory of its buildings and to estimate the cost of mitigating unacceptable seismic risks. Degenkolb Engineers, who performed the first study, was recontracted to perform structural evaluations, rank order the buildings based on their level of seismic deficiencies, and to develop conceptual rehabilitation schemes for the most seriously deficient buildings. Their evaluation is based on screening procedures and guidelines as established by the Interagency Committee on Seismic Safety in Construction (ICSSC). Currently, there is an inventory of 635 buildings in the Laboratory's Facility Information Management System's (FIMS's) database, out of which 58 buildings were identified by Degenkolb Engineers that require seismic rehabilitation. The remaining 577 buildings were judged to be adequate from a seismic safety viewpoint. The basis for these evaluations followed the seismic safety performance objectives of DOE standard (DOE STD 1020) Performance Category 1 (PC1). The 58 buildings were ranked according to three risk-based priority classifications (A, B, and C) as shown in Figure 1-1 (all 58 buildings have structural deficiencies). Table 1-1 provides a brief description of their expected performance and damage state following a major earthquake, rating the seismic vulnerability (1-10) where the number 10 represents the highest and worst. Buildings in classifications A and B were judged to require the Laboratory's highest attention towards rehabilitation, classification C buildings could defer rehabilitation until a major remodel is undertaken. Strengthening schemes were developed by Degenkolb Engineers for the most seriously deficient A and B classifications (15 total), which the Laboratory's Plant Engineering Department used as its basis for rehabilitation construction cost estimates. A detailed evaluation of Building 2580, a strengthening scheme, and a construction cost estimate are pending. Specific details of the total estimated rehabilitation costs, a proposed 10-year seismic rehabilitation plan, exemption categories by building, DOE performance guidelines, cost comparisons for rehabilitation, and LLNL reports by Degenkolb Engineers are provided in Appendix A. Based on the results of Degenkolb Engineers evaluations, along with the prevailing practice for the disposition of seismically deficient buildings and risk-based evaluations, it is concluded that there is no need to evacuate occupants from these 58 buildings prior to their rehabilitation.

  16. Use of outcrop analogues to predict lithology influence on the seismic signature Kathleen Baker* and Mike Batzle, Colorado School of Mines, Richard Gibson, Texas A&M University

    E-Print Network [OSTI]

    with outcrop studies, well log and seismic interpretation of deep-water sediments, forward and inverse modeling the interpretation of subsurface information such as well logs, seismic data and regional geologic models. Here we the influence of lithology on the seismic signature. Method To better interpret seismic DHIs it is essential

  17. Investigation of Seismic Surveys and Enhancement of Seismic Images

    E-Print Network [OSTI]

    Bilgi, Celal

    2015-06-05

    The ability to recover a seismic image of subsurface structure from recorded seismic data plays an important role in exploration of seismology applications. Processing techniques are applied to recover the geology from data recorded in the field...

  18. Crosswell Seismic Amplitude-Versus-Offset for Detailed Imaging of Facies and Fluid Distribution within Carbonate Oil Reservoirs

    E-Print Network [OSTI]

    Crosswell Seismic Amplitude-Versus-Offset for Detailed Imaging of Facies and Fluid Distribution, and demonstrate a method of using crosswell seismic profiling for identification of trapped oil, bypassed reservoir compartments, and location of fluid fronts in carbonate reefs. The method of crosswell seismic

  19. Nonlinear Seismic Response Of Single Piles

    SciTech Connect (OSTI)

    Cairo, R.; Conte, E.; Dente, G.

    2008-07-08

    In this paper, a method is proposed to analyse the seismic response of single piles under nonlinear soil condition. It is based on the Winkler foundation model formulated in the time domain, which makes use of p-y curves described by the Ramberg-Osgood relationship. The analyses are performed referring to a pile embedded in two-layer soil profiles with different sharp stiffness contrast. Italian seismic records are used as input motion. The calculated bending moments in the pile are compared to those obtained using other theoretical solutions.

  20. Shallow Seismic Investigation of Hydrogeologic Problems in the Brazos River Alluvium, Texas A&M Plantation, Burleson County, Texas

    E-Print Network [OSTI]

    McBrayer, M.A.

    1966-01-01

    Twenty-two shallow, reversed, seismic refraction profiles were conducted in the Brazos River floodplain to test the feasibility of using seismic methods to provide hydrogeologic information in this province. The specific objectives were to map...

  1. Second Quarter Hanford Seismic Report for Fiscal Year 2008

    SciTech Connect (OSTI)

    Rohay, Alan C.; Sweeney, Mark D.; Hartshorn, Donald C.; Clayton, Ray E.; Devary, Joseph L.

    2008-06-26

    The Hanford Seismic Assessment Program (HSAP) provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network for the U.S. Department of Energy and its contractors. The Hanford Seismic Assessment Team locates and identifies sources of seismic activity and monitors changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by the Hanford Site for waste management, natural phenomena hazards assessments, and engineering design and construction. In addition, the seismic monitoring organization works with the Hanford Site Emergency Services Organization to provide assistance in the event of a significant earthquake on the Hanford Site. The Hanford Seismic Network and the Eastern Washington Regional Network consist of 44 individual sensor sites and 15 radio relay sites maintained by the Hanford Seismic Assessment Team. For the Hanford Seismic Network, seven local earthquakes were recorded during the second quarter of fiscal year 2008. The largest event recorded by the network during the second quarter (February 3, 2008 - magnitude 2.3 Mc) was located northeast of Richland in Franklin County at a depth of 22.5 km. With regard to the depth distribution, two earthquakes occurred at shallow depths (less than 4 km, most likely in the Columbia River basalts), three earthquakes at intermediate depths (between 4 and 9 km, most likely in the pre-basalt sediments), and two earthquakes were located at depths greater than 9 km, within the crystalline basement. Geographically, five earthquakes occurred in swarm areas and two earthquakes were classified as random events.

  2. System and method for collisional activation of charged particles

    DOE Patents [OSTI]

    Ibrahim, Yehia M; Belov, Mikhail E; Prior, David C

    2013-09-24

    A collision cell is disclosed that provides ion activation in various selective modes. Ion activation is performed inside selected segments of a segmented quadrupole that provides maximum optimum capture and collection of fragmentation products. The invention provides collisional cooling of precursor ions as well as product fragments and further allows effective transmission of ions through a high pressure interface into a coupled mass analysis instrument.

  3. Evaluation of a Vector Hypercube for Seismic Modelling Seismic modelling

    E-Print Network [OSTI]

    Renaut, Rosemary

    Evaluation of a Vector Hypercube for Seismic Modelling Abstract Seismic modelling is a computationally to produce realistic seismic traces intensive problem. A 2D syn- Rosemary Renautt and Johnny equation is the first step in the generation of a synthetic seismogram as an aid in the interpretation

  4. Advance Seismic Data Analysis Program: (The "Hot Pot Project")

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project objectives: To improve geothermal well target selection and reduce drilling risk through an innovative and advanced analytical method for interpreting seismic data to locate deep geothermal structures.

  5. Seismic characterization of fractured reservoirs using 3D double beams

    E-Print Network [OSTI]

    Zheng, Yingcai

    2012-01-01

    We propose an efficient target-oriented method to characterize seismic properties of fractured reservoirs: the spacing between fractures and the fracture orientation. We use both singly scattered and multiply scattered ...

  6. COLLOQUIUM: Seismic Imaging and Inversion Based on Spectral-Element...

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

    February 6, 2013, 4:15pm to 5:30pm Colloquia MBG Auditorium COLLOQUIUM: Seismic Imaging and Inversion Based on Spectral-Element and Adjoint Methods Professor Jeroen Tromp Princeton...

  7. Controllable seismic source

    DOE Patents [OSTI]

    Gomez, Antonio; DeRego, Paul Jeffrey; Ferrel, Patrick Andrew; Thom, Robert Anthony; Trujillo, Joshua J.; Herridge, Brian

    2014-08-19

    An apparatus for generating seismic waves includes a housing, a strike surface within the housing, and a hammer movably disposed within the housing. An actuator induces a striking motion in the hammer such that the hammer impacts the strike surface as part of the striking motion. The actuator is selectively adjustable to change characteristics of the striking motion and characteristics of seismic waves generated by the impact. The hammer may be modified to change the physical characteristics of the hammer, thereby changing characteristics of seismic waves generated by the hammer. The hammer may be disposed within a removable shock cavity, and the apparatus may include two hammers and two shock cavities positioned symmetrically about a center of the apparatus.

  8. Controllable seismic source

    DOE Patents [OSTI]

    Gomez, Antonio; DeRego, Paul Jeffrey; Ferrell, Patrick Andrew; Thom, Robert Anthony; Trujillo, Joshua J.; Herridge, Brian

    2015-09-29

    An apparatus for generating seismic waves includes a housing, a strike surface within the housing, and a hammer movably disposed within the housing. An actuator induces a striking motion in the hammer such that the hammer impacts the strike surface as part of the striking motion. The actuator is selectively adjustable to change characteristics of the striking motion and characteristics of seismic waves generated by the impact. The hammer may be modified to change the physical characteristics of the hammer, thereby changing characteristics of seismic waves generated by the hammer. The hammer may be disposed within a removable shock cavity, and the apparatus may include two hammers and two shock cavities positioned symmetrically about a center of the apparatus.

  9. Activated carbon fiber composite material and method of making

    DOE Patents [OSTI]

    Burchell, Timothy D. (Oak Ridge, TN); Weaver, Charles E. (Knoxville, TN); Chilcoat, Bill R. (Knoxville, TN); Derbyshire, Frank (Lexington, KY); Jagtoyen, Marit (Lexington, KY)

    2001-01-01

    An activated carbon fiber composite for separation and purification, or catalytic processing of fluids is described. The activated composite comprises carbon fibers rigidly bonded to form an open, permeable, rigid monolith capable of being formed to near-net-shape. Separation and purification of gases are effected by means of a controlled pore structure that is developed in the carbon fibers contained in the composite. The open, permeable structure allows the free flow of gases through the monolith accompanied by high rates of adsorption. By modification of the pore structure and bulk density the composite can be rendered suitable for applications such as gas storage, catalysis, and liquid phase processing.

  10. Activated carbon fiber composite material and method of making

    DOE Patents [OSTI]

    Burchell, Timothy D. (Oak Ridge, TN); Weaver, Charles E. (Knoxville, TN); Chilcoat, Bill R. (Knoxville, TN); Derbyshire, Frank (Lexington, KY); Jagtoyen, Marit (Lexington, KY)

    2000-01-01

    An activated carbon fiber composite for separation and purification, or catalytic processing of fluids is described. The activated composite comprises carbon fibers rigidly bonded to form an open, permeable, rigid monolith capable of being formed to near-net-shape. Separation and purification of gases are effected by means of a controlled pore structure that is developed in the carbon fibers contained in the composite. The open, permeable structure allows the free flow of gases through the monolith accompanied by high rates of adsorption. By modification of the pore structure and bulk density the composite can be rendered suitable for applications such as gas storage, catalysis, and liquid phase processing.

  11. Seismic viscoelastic attenuation Submitted to

    E-Print Network [OSTI]

    Cormier, Vernon F.

    Seismic viscoelastic attenuation Submitted to: Encyclopedia of Solid Earth Geophysics Harsh Gupta-3046 USA E-mail: vernon.cormier@uconn.edu Tel: 860-486-3547 Fax: 860-486-3346 #12;SEISMIC VISCOELASTIC ATTENUATION Synonyms Seismic intrinsic attenuation Definitions Linear viscoelastic attenuation. The loss

  12. Multicomponent Seismic Technology Assessment of

    E-Print Network [OSTI]

    Texas at Austin, University of

    Multicomponent Seismic Technology Assessment of Fluid-gas Expulsion Geology and Gas-hydrate Systems-component ocean-bottom-cable (4-C OBC) seismic data acquired in deep water across the Gulf of Mexico were used technology or with conventional towed-cable seismic technology. This increased resolution allows the P

  13. Seismic Vessel Problem Gregory Gutin

    E-Print Network [OSTI]

    Gutin, Gregory

    Seismic Vessel Problem Gregory Gutin , Helmut Jakubowicz , Shuki Ronen and Alexei Zverovitch November 14, 2003 Abstract We introduce and study a new combinatorial optimization prob- lem, the Seismic computational experience with solving SVP instances drawn from industrial practice (geophysical seismic acquisi

  14. Subduction Zone Seismic Experiment in Peru: Results From a Wireless Seismic Network

    E-Print Network [OSTI]

    2009-01-01

    Sensing Subduction Zone Seismic Experiment in Peru:results from a wireless seismic Network Igor Stubailo,deployed in Peru. UCLA seismic line in Peru Lake Titicaca

  15. Borehole seismic monitoring of seismic stimulation at Occidental Permian Ltd's -- South Wason Clear Fork Unit

    E-Print Network [OSTI]

    Daley, Tom; Majer, Ernie

    2007-01-01

    the distribution of seismic energy within the reservoir.Field Monitoring of ASR Seismic Stimulation Source at LostField Results from Seismic Stimulation, 17th International

  16. Assessing Beyond Design Basis Seismic Events and Implications...

    Office of Environmental Management (EM)

    Assessing Beyond Design Basis Seismic Events and Implications on Seismic Risk Assessing Beyond Design Basis Seismic Events and Implications on Seismic Risk September 19, 2012...

  17. An Active-Set Quadratic Programming Method Based On Sequential ...

    E-Print Network [OSTI]

    2013-10-07

    Oct 7, 2013 ... A new method for solving sequences of quadratic programs (QPs) is presented. ... significant reduction in the computation time for large problems with ... supported by a grant of the Initiative for Sustainability and Energy at Northwestern University. .... To avoid large computational costs, the factorization.

  18. Real-Time Active Cosmic Neutron Background Reduction Methods

    SciTech Connect (OSTI)

    Mukhopadhyay, Sanjoy; Maurer, Richard; Wolff, Ronald; Mitchell, Stephen; Guss, Paul

    2013-09-01

    Neutron counting using large arrays of pressurized 3He proportional counters from an aerial system or in a maritime environment suffers from the background counts from the primary cosmic neutrons and secondary neutrons caused by cosmic ray?induced mechanisms like spallation and charge-exchange reaction. This paper reports the work performed at the Remote Sensing LaboratoryAndrews (RSL-A) and results obtained when using two different methods to reduce the cosmic neutron background in real time. Both methods used shielding materials with a high concentration (up to 30% by weight) of neutron-absorbing materials, such as natural boron, to remove the low-energy neutron flux from the cosmic background as the first step of the background reduction process. Our first method was to design, prototype, and test an up-looking plastic scintillator (BC-400, manufactured by Saint Gobain Corporation) to tag the cosmic neutrons and then create a logic pulse of a fixed time duration (~120 ?s) to block the data taken by the neutron counter (pressurized 3He tubes running in a proportional counter mode). The second method examined the time correlation between the arrival of two successive neutron signals to the counting array and calculated the excess of variance (Feynman variance Y2F)1 in the neutron count distribution from Poisson distribution. The dilution of this variance from cosmic background values ideally would signal the presence of man-made neutrons.2 The first method has been technically successful in tagging the neutrons in the cosmic-ray flux and preventing them from being counted in the 3He tube array by electronic vetofield measurement work shows the efficiency of the electronic veto counter to be about 87%. The second method has successfully derived an empirical relationship between the percentile non-cosmic component in a neutron flux and the Y2F of the measured neutron count distribution. By using shielding materials alone, approximately 55% of the neutron flux from man-made sources like 252Cf or Am-Be was removed.

  19. Seismic Attenuation Inversion with t* Using tstarTomog.

    SciTech Connect (OSTI)

    Preston, Leiph

    2014-09-01

    Seismic attenuation is defined as the loss of the seismic wave amplitude as the wave propagates excluding losses strictly due to geometric spreading. Information gleaned from seismic waves can be utilized to solve for the attenuation properties of the earth. One method of solving for earth attenuation properties is called t*. This report will start by introducing the basic theory behind t* and delve into inverse theory as it pertains to how the algorithm called tstarTomog inverts for attenuation properties using t* observations. This report also describes how to use the tstarTomog package to go from observed data to a 3-D model of attenuation structure in the earth.

  20. Estimation of Seismic Load Demand for a Wind Turbine in the Time Domain: Preprint

    SciTech Connect (OSTI)

    Prowell, I.; Elgamal, A.; Uang, C.; Jonkman, J.

    2010-03-01

    Turbines installed in seismically active regions such as the Pacific Rim or the Mediterranean must consider loads induced by base shaking from an earthquake. To account for this earthquake risk, current International Electrotechnical Commission (IEC) certification requirements provide a simplified method for calculating seismic loads which is intended to be conservative. Through the addition of capabilities, it is now possible to simulate earthquake loading of a wind turbine in conjunction other load sources such as wind and control system behavior using the FAST code. This paper presents a comparison of three earthquake loading scenarios of the National Renewable Energy Laboratory (NREL) offshore 5-MW baseline wind turbine: idling; continued operation through an earthquake; and an emergency shutdown initiated by an earthquake. Using a set of 22 earthquake records, simulations are conducted for each load case. A summary of the resulting tower moment demand is presented to assess the influence of operational state on the resulting structural demand.

  1. Detectable seismic consequences of the interaction of a primordial black hole with Earth

    E-Print Network [OSTI]

    Yang Luo; Shravan Hanasoge; Jeroen Tromp; Frans Pretorius

    2012-03-16

    Galaxies observed today are likely to have evolved from density perturbations in the early universe. Perturbations that exceeded some critical threshold are conjectured to have undergone gravitational collapse to form primordial black holes (PBHs) at a range of masses. Such PBHs serve as candidates for cold dark matter and their detection would shed light on conditions in the early universe. Here we propose a mechanism to search for transits of PBHs through/nearby Earth by studying the associated seismic waves. Using a spectral-element method, we simulate and visualize this seismic wave field in Earth's interior. We predict the emergence of two unique signatures, namely, a wave that would arrive almost simultaneously everywhere on Earth's free surface and the excitation of unusual spheroidal modes with a characteristic frequency-spacing in free oscillation spectra. These qualitative characteristics are unaffected by the speed or proximity of the PBH trajectory. The seismic energy deposited by a proximal ${M^{PBH} = 10^{15}}$ g PBH is comparable to a magnitude $M_w=4$ earthquake. The non-seismic collateral damage due to the actual impact of such small PBHs with Earth would be negligible. Unfortunately, the expected collision rate is very low even if PBHs constituted all of dark matter, at ${\\sim 10^{-7} {yr}^{-1}}$, and since the rate scales as ${1/M^{PBH}}$, fortunately encounters with larger, Earth-threatening PBHs are exceedingly unlikely. However, the rate at which non-colliding close encounters of PBHs could be detected by seismic activity alone is roughly two orders of magnitude larger --- that is once every hundred thousand years --- than the direct collision rate.

  2. Recommissioning the K-1600 Seismic Test Facility

    SciTech Connect (OSTI)

    Wynn, C.C. ); Brewer, D.W. )

    1991-10-01

    The Center of Natural Phenomena Engineering (CNPE) was established under the technical direction of Dr. James E. Beavers with a mandate to assess, by analyses and testing, the seismic capacity of building structures that house sensitive processes at the Oak Ridge Y-12 Plant. This mandate resulted in a need to recommission the K-1600 Seismic Test Facility (STF) at the Oak Ridge K-25 Site, which had been shutdown for 6 years. This paper documents the history of the facility and fives some salient construction, operation, and performance details of its 8-ton, 20-foot center of gravity payload bi-axial seismic simulator. A log of activities involved in the restart of this valuable resource is included as Table 1. Some of problems and solutions associated with recommissioning the facility under a relatively limited budget are included. The unique attributes of the shake table are discussed. The original mission and performance requirements are compared to current expanded mission and performance capabilities. Potential upgrades to further improve the capabilities of the test facility as an adjunct to the CNPE are considered. Additional uses for the facility are proposed, including seismic qualification testing of devices unique to enrichment technologies and associated hazardous waste treatment and disposal processes. In summary, the STF restart in conjunction with CNPE has added a vital, and unique facility to the list of current national resources utilized for earthquake engineering research and development. 3 figs., 1 tab.

  3. Monte Carlo data-driven tight frame for seismic data Shiwei Yu1, Jianwei Ma2 and Stanley Osher3

    E-Print Network [OSTI]

    Ferguson, Thomas S.

    -DDTF), and tested the trained filter bank derived from this process by conducting seismic data denoising preprocessing steps in the seismic data processing chain. Methods to attenuate random noise can generallyMonte Carlo data-driven tight frame for seismic data recovery Shiwei Yu1, Jianwei Ma2 and Stanley

  4. Multiple fluvial processes detected by riverside seismic and infrasound monitoring of a controlled flood in the Grand Canyon

    E-Print Network [OSTI]

    Tsai, Victor C.

    Multiple fluvial processes detected by riverside seismic and infrasound monitoring of a controlled. Karlstrom (2013), Multiple fluvial processes detected by riverside seismic and infrasound monitoring-duration, and broadly applicable methods for monitoring riverbed processes have motivated research on the seismic signal

  5. Engineered enzymatically active bacteriophages and methods of uses thereof

    DOE Patents [OSTI]

    Collins, James J (Newton, MA); Kobayashi, Hideki (Yokohama, JP); Kearn, Mads (Ottawa, CA); Araki, Michihiro (Minatoku, JP); Friedland, Ari (Boston, MA); Lu, Timothy Kuan-Ta (Palo Alto, CA)

    2012-05-22

    The present invention provides engineered bacteriophages that express at least one biofilm degrading enzyme on their surface and uses thereof for degrading bacterial biofilms. The invention also provides genetically engineered bacteriophages expressing the biofilm degrading enzymes and proteins necessary for the phage to replicate in different naturally occurring biofilm producing bacteria. The phages of the invention allow a method of biofilm degradation by the use of one or only a few administration of the phage because the system using these phages is self perpetuating, and capable of degrading biofilm even when the concentration of bacteria within the biofilm is low.

  6. A method for activation analysis of ruthenium in sea water

    E-Print Network [OSTI]

    Dixon, Bryan William

    1965-01-01

    of Ruthenium in the Gulf of Mexico . 8 Solubility of Ruthenium in Sea Water C H A P T E R I INTRODUCTION Ruthenium, the rarest of the platinum metals, was discovered in 1845 by Klaus. Sidgewick (1950) and Goldschmidt (1954) state an abundance of about 0... of allow ing for the detection of the contributing physical and chemical forms to the total present. It is thought that the method is applicable to marine biota and sediments as well as water samples. The concentrations of soluble ruthenium found...

  7. Discrimination of porosity and fluid saturation using seismic velocity analysis

    DOE Patents [OSTI]

    Berryman, James G. (Danville, CA)

    2001-01-01

    The method of the invention is employed for determining the state of saturation in a subterranean formation using only seismic velocity measurements (e.g., shear and compressional wave velocity data). Seismic velocity data collected from a region of the formation of like solid material properties can provide relatively accurate partial saturation data derived from a well-defined triangle plotted in a (.rho./.mu., .lambda./.mu.)-plane. When the seismic velocity data are collected over a large region of a formation having both like and unlike materials, the method first distinguishes the like materials by initially plotting the seismic velocity data in a (.rho./.lambda., .mu./.lambda.)-plane to determine regions of the formation having like solid material properties and porosity.

  8. Fission and spallation data evaluation using induced-activity method

    E-Print Network [OSTI]

    Karapetyan, G S

    2015-01-01

    The induced-activity investigations in off-line analysis performed in different experiments, concerning pre-actinide and actinide nuclei, are here presented and discussed. Generalized expressions for the determination of independent yields/cross sections of radioactive nuclei, formed in the targets, are derived and analysed. The fragment mass distribution from U-238, Th-232 and Ta-181 photofission at the bremsstrahlung end-point energies of 50 and 3500 MeV, and from Am-241, U-238 and Np-237 fission induced by 660-MeV protons, are scrutinized from the point of view of the multimodal fission approach. The results of these studies are hence compared with theoretical model calculations using the CRISP code. We subsequently discuss the complex particle-induced reaction, such as heavy-ions and deuterons, by using the thick-target thick-catcher technique and the two-step vector model framework as well. This is accomplished in order to present the investigation of the main processes (fission, spallation and (multi)fr...

  9. The contribution of pattern recognition of seismic and morphostructural data to seismic hazard assessment

    E-Print Network [OSTI]

    Peresan, Antonella; Soloviev, Alexander; Panza, Giuliano F

    2014-01-01

    The reliable statistical characterization of the spatial and temporal properties of large earthquakes occurrence is one of the most debated issues in seismic hazard assessment, due to the unavoidably limited observations from past events. We show that pattern recognition techniques, which are designed in a formal and testable way, may provide significant space-time constraints about impending strong earthquakes. This information, when combined with physically sound methods for ground shaking computation, like the neo-deterministic approach (NDSHA), may produce effectively preventive seismic hazard maps. Pattern recognition analysis of morphostructural data provide quantitative and systematic criteria for identifying the areas prone to the largest events, taking into account a wide set of possible geophysical and geological data, whilst the formal identification of precursory seismicity patterns (by means of CN and M8S algorithms), duly validated by prospective testing, provides useful constraints about impend...

  10. Calibration of Seismic Attributes for Reservoir Characterization

    SciTech Connect (OSTI)

    Wayne D. Pennington

    2002-09-29

    The project, "Calibration of Seismic Attributes for Reservoir Characterization," is now complete. Our original proposed scope of work included detailed analysis of seismic and other data from two to three hydrocarbon fields; we have analyzed data from four fields at this level of detail, two additional fields with less detail, and one other 2D seismic line used for experimentation. We also included time-lapse seismic data with ocean-bottom cable recordings in addition to the originally proposed static field data. A large number of publications and presentations have resulted from this work, inlcuding several that are in final stages of preparation or printing; one of these is a chapter on "Reservoir Geophysics" for the new Petroleum Engineering Handbook from the Society of Petroleum Engineers. Major results from this project include a new approach to evaluating seismic attributes in time-lapse monitoring studies, evaluation of pitfalls in the use of point-based measurements and facies classifications, novel applications of inversion results, improved methods of tying seismic data to the wellbore, and a comparison of methods used to detect pressure compartments. Some of the data sets used are in the public domain, allowing other investigators to test our techniques or to improve upon them using the same data. From the public-domain Stratton data set we have demonstrated that an apparent correlation between attributes derived along 'phantom' horizons are artifacts of isopach changes; only if the interpreter understands that the interpretation is based on this correlation with bed thickening or thinning, can reliable interpretations of channel horizons and facies be made. From the public-domain Boonsville data set we developed techniques to use conventional seismic attributes, including seismic facies generated under various neural network procedures, to subdivide regional facies determined from logs into productive and non-productive subfacies, and we developed a method involving cross-correlation of seismic waveforms to provide a reliable map of the various facies present in the area. The Wamsutter data set led to the use of unconventional attributes including lateral incoherence and horizon-dependent impedance variations to indicate regions of former sand bars and current high pressure, respectively, and to evaluation of various upscaling routines. The Teal South data set has provided a surprising set of results, leading us to develop a pressure-dependent velocity relationship and to conclude that nearby reservoirs are undergoing a pressure drop in response to the production of the main reservoir, implying that oil is being lost through their spill points, never to be produced. Additional results were found using the public-domain Waha and Woresham-Bayer data set, and some tests of technologies were made using 2D seismic lines from Michigan and the western Pacific ocean.

  11. CALIBRATION OF SEISMIC ATTRIBUTES FOR RESERVOIR CHARACTERIZATION

    SciTech Connect (OSTI)

    Wayne D. Pennington; Horacio Acevedo; Aaron Green; Joshua Haataja; Shawn Len; Anastasia Minaeva; Deyi Xie

    2002-10-01

    The project, ''Calibration of Seismic Attributes for Reservoir Calibration,'' is now complete. Our original proposed scope of work included detailed analysis of seismic and other data from two to three hydrocarbon fields; we have analyzed data from four fields at this level of detail, two additional fields with less detail, and one other 2D seismic line used for experimentation. We also included time-lapse seismic data with ocean-bottom cable recordings in addition to the originally proposed static field data. A large number of publications and presentations have resulted from this work, including several that are in final stages of preparation or printing; one of these is a chapter on ''Reservoir Geophysics'' for the new Petroleum Engineering Handbook from the Society of Petroleum Engineers. Major results from this project include a new approach to evaluating seismic attributes in time-lapse monitoring studies, evaluation of pitfalls in the use of point-based measurements and facies classifications, novel applications of inversion results, improved methods of tying seismic data to the wellbore, and a comparison of methods used to detect pressure compartments. Some of the data sets used are in the public domain, allowing other investigators to test our techniques or to improve upon them using the same data. From the public-domain Stratton data set we have demonstrated that an apparent correlation between attributes derived along ''phantom'' horizons are artifacts of isopach changes; only if the interpreter understands that the interpretation is based on this correlation with bed thickening or thinning, can reliable interpretations of channel horizons and facies be made. From the public-domain Boonsville data set we developed techniques to use conventional seismic attributes, including seismic facies generated under various neural network procedures, to subdivide regional facies determined from logs into productive and non-productive subfacies, and we developed a method involving cross-correlation of seismic waveforms to provide a reliable map of the various facies present in the area. The Wamsutter data set led to the use of unconventional attributes including lateral incoherence and horizon-dependent impedance variations to indicate regions of former sand bars and current high pressure, respectively, and to evaluation of various upscaling routines. The Teal South data set has provided a surprising set of results, leading us to develop a pressure-dependent velocity relationship and to conclude that nearby reservoirs are undergoing a pressure drop in response to the production of the main reservoir, implying that oil is being lost through their spill points, never to be produced. Additional results were found using the public-domain Waha and Woresham-Bayer data set, and some tests of technologies were made using 2D seismic lines from Michigan and the western Pacific ocean.

  12. Fission and spallation data evaluation using induced-activity method

    E-Print Network [OSTI]

    G. S. Karapetyan

    2015-09-01

    The induced-activity investigations in off-line analysis performed in different experiments, concerning pre-actinide and actinide nuclei, are here presented and discussed. Generalized expressions for the determination of independent yields/cross sections of radioactive nuclei, formed in the targets, are derived and analysed. The fragment mass distribution from U-238, Th-232 and Ta-181 photofission at the bremsstrahlung end-point energies of 50 and 3500 MeV, and from Am-241, U-238 and Np-237 fission induced by 660-MeV protons, are scrutinized from the point of view of the multimodal fission approach. The results of these studies are hence compared with theoretical model calculations using the CRISP code. We subsequently discuss the complex particle-induced reaction, such as heavy-ions and deuterons, by using the thick-target thick-catcher technique and the two-step vector model framework as well. This is accomplished in order to present the investigation of the main processes (fission, spallation and (multi)fragmentation) in intermediate- and high-energy ranges of the incident particle. The set of experimental data, presented in this work, encompasses not merely the data as total production cross sections. Notwithstanding, it further covers other data, as individual yields/cross sections, charge, mass and spin distributions of the reaction fragments, as well as kinematic features. These sources of experimental data can serve as a consistent set of benchmarking data, still necessary for the study of heavy nuclei. Besides, it is also useful for technological applications, from astrophysics and environmental sciences to accelerator technology and accelerator-based nuclear waste transmutation and energy amplification as well.

  13. The fast neutron fluence and the activation detector activity calculations using the effective source method and the adjoint function

    SciTech Connect (OSTI)

    Hep, J.; Konecna, A.; Krysl, V.; Smutny, V. [Calculation Dept., Skoda JS plc, Orlik 266, 31606 Plzen (Czech Republic)

    2011-07-01

    This paper describes the application of effective source in forward calculations and the adjoint method to the solution of fast neutron fluence and activation detector activities in the reactor pressure vessel (RPV) and RPV cavity of a VVER-440 reactor. Its objective is the demonstration of both methods on a practical task. The effective source method applies the Boltzmann transport operator to time integrated source data in order to obtain neutron fluence and detector activities. By weighting the source data by time dependent decay of the detector activity, the result of the calculation is the detector activity. Alternatively, if the weighting is uniform with respect to time, the result is the fluence. The approach works because of the inherent linearity of radiation transport in non-multiplying time-invariant media. Integrated in this way, the source data are referred to as the effective source. The effective source in the forward calculations method thereby enables the analyst to replace numerous intensive transport calculations with a single transport calculation in which the time dependence and magnitude of the source are correctly represented. In this work, the effective source method has been expanded slightly in the following way: neutron source data were performed with few group method calculation using the active core calculation code MOBY-DICK. The follow-up neutron transport calculation was performed using the neutron transport code TORT to perform multigroup calculations. For comparison, an alternative method of calculation has been used based upon adjoint functions of the Boltzmann transport equation. Calculation of the three-dimensional (3-D) adjoint function for each required computational outcome has been obtained using the deterministic code TORT and the cross section library BGL440. Adjoint functions appropriate to the required fast neutron flux density and neutron reaction rates have been calculated for several significant points within the RPV and RPV cavity of the VVER-440 reacto rand located axially at the position of maximum power and at the position of the weld. Both of these methods (the effective source and the adjoint function) are briefly described in the present paper. The paper also describes their application to the solution of fast neutron fluence and detectors activities for the VVER-440 reactor. (authors)

  14. Seismic stimulation for enhanced oil recovery

    E-Print Network [OSTI]

    Pride, S.R.

    2008-01-01

    M. , and Z. Wang, 1992, Seismic properties of pore ?uids:2005, Relationships between seismic and hydrological proper-by d/dt ? ? / ? t ? u ?. Seismic stimulation Biot, M. A. ,

  15. Friction-based control system for seismic energy dissipation with isolated stories

    E-Print Network [OSTI]

    Iliadis, Charalampos

    2011-01-01

    The implementation of various structural control systems, such as passive, semi-active or active is not a new concept. They are incorporated in structures to increase the performance under seismic and/or wind loading either ...

  16. SEISMIC ATTENUATION FOR RESERVOIR CHARACTERIZATION

    SciTech Connect (OSTI)

    Joel Walls; M.T. Taner; Naum Derzhi; Gary Mavko; Jack Dvorkin

    2003-04-01

    In this report we will show results of seismic and well log derived attenuation attributes from a deep water Gulf of Mexico data set. This data was contributed by Burlington Resources and Seitel Inc. The data consists of ten square kilometers of 3D seismic data and three well penetrations. We have computed anomalous seismic absorption attributes on the seismic data and have computed Q from the well log curves. The results show a good correlation between the anomalous absorption (attenuation) attributes and the presence of gas as indicated by well logs.

  17. Frequent-Interval Seismic CPTu

    Office of Environmental Management (EM)

    site characterization. Evaluation of non-linear soil behavior... detailed stratigraphy small-strain velocity measurements large-strain non-seismic measurements...

  18. Stellar activity as noise in exoplanet detection I. Methods and application to solar-like stars and activity cycles

    E-Print Network [OSTI]

    Korhonen, H; Piskunov, N; Hackman, T; Juncher, D; Jarvinen, S P; Joergensen, U G

    2015-01-01

    The detection of exoplanets using any method is prone to confusion due to the intrinsic variability of the host star. We investigate the effect of cool starspots on the detectability of the exoplanets around solar-like stars using the radial velocity method. For investigating this activity-caused "jitter" we calculate synthetic spectra using radiative transfer, known stellar atomic and molecular lines, different surface spot configurations, and an added planetary signal. Here, the methods are described in detail, tested and compared to previously published studies. The methods are also applied to investigate the activity jitter in old and young solar-like stars, and over a solar-like activity cycles. We find that the mean full jitter amplitude obtained from the spot surfaces mimicking the solar activity varies during the cycle approximately between 1 m/s and 9 m/s. With a realistic observing frequency a Neptune mass planet on a one year orbit can be reliably recovered. On the other hand, the recovery of an Ea...

  19. Seismic attribute analysis of the Upper Morrow Sandstone and the Arbuckle Group from 3D-3C seismic data at Cutter Field, southwest Kansas

    E-Print Network [OSTI]

    Redger, Clyde Austin

    2015-05-31

    these reservoirs with seismic methods is challenging for a number of geophysical reasons. This study investigates the accuracy with which analysis of post-stack 3D-3C seismic data can delineate Upper Morrow Sandstone reservoirs and predict Arbuckle Group rock...

  20. Third Quarter Hanford Seismic Report for Fiscal Year 2008

    SciTech Connect (OSTI)

    Rohay, Alan C.; Sweeney, Mark D.; Hartshorn, Donald C.; Clayton, Ray E.; Devary, Joseph L.

    2008-09-01

    The Hanford Seismic Assessment Program (HSAP) provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network for the U.S. Department of Energy and its contractors. The Hanford Seismic Assessment Team locates and identifies sources of seismic activity and monitors changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by the Hanford Site for waste management, natural phenomena hazards assessments, and engineering design and construction. In addition, the seismic monitoring organization works with the Hanford Site Emergency Services Organization to provide assistance in the event of a significant earthquake on the Hanford Site. The Hanford Seismic Network and the Eastern Washington Regional Network consist of 44 individual sensor sites and 15 radio relay sites maintained by the Hanford Seismic Assessment Team. For the Hanford Seismic Network, fourteen local earthquakes were recorded during the third quarter of fiscal year 2008. The largest event recorded by the network during the third quarter (May 18, 2008 - magnitude 3.7 Mc) was located approximately 17 km east of Prosser at a depth of 20.5 km. With regard to the depth distribution, five earthquakes occurred at shallow depths (less than 4 km, most likely in the Columbia River basalts), six earthquakes at intermediate depths (between 4 and 9 km, most likely in the pre-basalt sediments), and three earthquakes were located at depths greater than 9 km, within the crystalline basement. Geographically, eight earthquakes occurred in swarm areas and six earthquakes were classified as random events. The largest event recorded by the network during the third quarter occurred on May 18 (magnitude 3.7 Mc) and was located approximately 17 km east of Prosser at a depth of 20.5 km. This earthquake was the highest magnitude event recorded in the 46-47 N. latitude / 119-120 W. longitude sector since 1975. The May 18 event, not reported as being felt on the Hanford site or causing any damage, was communicated to the PNNL Operations Center per HSAP communications procedures. The event is not considered to be significant with regard to site safety and not unprecedented given the sites seismic history. The Hanford strong motion accelerometer (SMA) stations at the 200 East Area, 300 Area, and the 400 Area were triggered by the May 18 event. The reportable action level of 2% g for Hanford facilities is approximately 12 times larger than the peak acceleration (0.17%) observed at the 300 Area SMA station and no action was required.

  1. Elastic-Wavefield Seismic Stratigraphy: A New Seismic Imaging Technology

    SciTech Connect (OSTI)

    Bob A. Hardage; Milo M. Backus; Michael V. DeAngelo; Sergey Fomel; Khaled Fouad; Robert J. Graebner; Paul E. Murray; Randy Remington; Diana Sava

    2006-07-31

    The purpose of our research has been to develop and demonstrate a seismic technology that will provide the oil and gas industry a better methodology for understanding reservoir and seal architectures and for improving interpretations of hydrocarbon systems. Our research goal was to expand the valuable science of seismic stratigraphy beyond the constraints of compressional (P-P) seismic data by using all modes (P-P, P-SV, SH-SH, SV-SV, SV-P) of a seismic elastic wavefield to define depositional sequences and facies. Our objective was to demonstrate that one or more modes of an elastic wavefield may image stratal surfaces across some stratigraphic intervals that are not seen by companion wave modes and thus provide different, but equally valid, information regarding depositional sequences and sedimentary facies within that interval. We use the term elastic wavefield stratigraphy to describe the methodology we use to integrate seismic sequences and seismic facies from all modes of an elastic wavefield into a seismic interpretation. We interpreted both onshore and marine multicomponent seismic surveys to select the data examples that we use to document the principles of elastic wavefield stratigraphy. We have also used examples from published papers that illustrate some concepts better than did the multicomponent seismic data that were available for our analysis. In each interpretation study, we used rock physics modeling to explain how and why certain geological conditions caused differences in P and S reflectivities that resulted in P-wave seismic sequences and facies being different from depth-equivalent S-wave sequences and facies across the targets we studied.

  2. A new probabilistic shift away from seismic hazard reality in Italy?

    E-Print Network [OSTI]

    Nekrasova, Anastasia; Kossobokov, Volodya; Panza, Giuliano F

    2014-01-01

    Objective testing is a key issue in the process of revision and improvement of seismic hazard assessments. Therefore we continue the rigorous comparative analysis of past and newly available hazard maps for the territory of Italy against the seismic activity observed in reality. The final Global Seismic Hazard Assessment Program (GSHAP) results and the most recent version of Seismic Hazard Harmonization in Europe (SHARE) project maps, along with the reference hazard maps for the Italian seismic code, all obtained by probabilistic seismic hazard assessment (PSHA), are cross-compared to the three ground shaking maps based on the duly physically and mathematically rooted neo-deterministic approach (NDSHA). These eight hazard maps for Italy are tested against the available data on ground shaking. The results of comparison between predicted macroseismic intensities and those reported for past earthquakes (in the time interval from 1000 to 2014 year) show that models provide rather conservative estimates, which ten...

  3. System and method for coproduction of activated carbon and steam/electricity

    DOE Patents [OSTI]

    Srinivasachar, Srivats (Sturbridge, MA); Benson, Steven (Grand Forks, ND); Crocker, Charlene (Newfolden, MN); Mackenzie, Jill (Carmel, IN)

    2011-07-19

    A system and method for producing activated carbon comprising carbonizing a solid carbonaceous material in a carbonization zone of an activated carbon production apparatus (ACPA) to yield a carbonized product and carbonization product gases, the carbonization zone comprising carbonaceous material inlet, char outlet and carbonization gas outlet; activating the carbonized product via activation with steam in an activation zone of the ACPA to yield activated carbon and activation product gases, the activation zone comprising activated carbon outlet, activation gas outlet, and activation steam inlet; and utilizing process gas comprising at least a portion of the carbonization product gases or a combustion product thereof; at least a portion of the activation product gases or a combustion product thereof; or a combination thereof in a solid fuel boiler system that burns a solid fuel boiler feed with air to produce boiler-produced steam and flue gas, the boiler upstream of an air heater within a steam/electricity generation plant, said boiler comprising a combustion zone, a boiler-produced steam outlet and at least one flue gas outlet.

  4. Method for non-referential defect characterization using fractal encoding and active contours

    DOE Patents [OSTI]

    Gleason, Shaun S. (Knoxville, TN); Sari-Sarraf, Hamed (Lubbock, TX)

    2007-05-15

    A method for identification of anomalous structures, such as defects, includes the steps of providing a digital image and applying fractal encoding to identify a location of at least one anomalous portion of the image. The method does not require a reference image to identify the location of the anomalous portion. The method can further include the step of initializing an active contour based on the location information obtained from the fractal encoding step and deforming an active contour to enhance the boundary delineation of the anomalous portion.

  5. Characterising Seismic Data Roel Bertens

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Characterising Seismic Data Roel Bertens Arno Siebes Technical Report UU-CS-2014-002 January 2014.089 3508 TB Utrecht The Netherlands #12;Characterising Seismic Data * Roel Bertens Arno Siebes Abstract of similarity, we first pre- process the seismogram by a wavelet decomposition, followed by a discretisation

  6. Methods for improved selectivity in photo-activation and detection of molecular diagnostic agents

    DOE Patents [OSTI]

    Wachter, Eric A. (Oak Ridge, TN); Fisher, Walter G. (Knoxville, TN); Dees, H. Craig (Knoxville, TN)

    2008-03-18

    A method for the imaging of a particular volume of plant or animal tissue, wherein the plant or animal tissue contains at least one photo-active molecular agent. The method comprises the steps of treating the particular volume of the plant or animal tissue with light sufficient to promote a simultaneous two-photon excitation of the photo-active molecular agent contained in the particular volume of the plant or animal tissue, photo-activating at least one of the at least one photo-active molecular agent in the particular volume of the plant or animal tissue, thereby producing at least one photo-activated molecular agent, wherein the at least one photo-activated molecular agent emits energy, detecting the energy emitted by the at least one photo-activated molecular agent, and producing a detected energy signal which is characteristic of the particular volume of plant or animal tissue. The present invention also provides a method for the imaging of a particular volume of material, wherein the material contains at least one photo-active molecular agent.

  7. Method for improved selectivity in photo-activation and detection of molecular diagnostic agents

    DOE Patents [OSTI]

    Wachter, Eric A. (Oak Ridge, TN); Fisher, Walter G. (Knoxville, TN); Dees, H. Craig (Knoxville, TN)

    1998-01-01

    A method for the imaging of a particular volume of plant or animal tissue, wherein the plant or animal tissue contains at least one photo-active molecular agent. The method includes the steps of treating the particular volume of the plant or animal tissue with light sufficient to promote a simultaneous two-photon excitation of the photo-active molecular agent contained in the particular volume of the plant or animal tissue, photo-activating at least one of the at least one photo-active molecular agent in the particular volume of the plant or animal tissue, thereby producing at least one photo-activated molecular agent, wherein the at least one photo-activated molecular agent emits energy, detecting the energy emitted by the at least one photo-activated molecular agent, and producing a detected energy signal which is characteristic of the particular volume of plant or animal tissue. The present invention is also a method for the imaging of a particular volume of material, wherein the material contains at least one photo-active molecular agent.

  8. Method for improved selectivity in photo-activation and detection of molecular diagnostic agents

    DOE Patents [OSTI]

    Wachter, E.A.; Fisher, W.G.; Dees, H.C.

    1998-11-10

    A method for the imaging of a particular volume of plant or animal tissue, wherein the plant or animal tissue contains at least one photo-active molecular agent. The method includes the steps of treating the particular volume of the plant or animal tissue with light sufficient to promote a simultaneous two-photon excitation of the photo-active molecular agent contained in the particular volume of the plant or animal tissue, photo-activating at least one of the at least one photo-active molecular agent in the particular volume of the plant or animal tissue, thereby producing at least one photo-activated molecular agent, wherein the at least one photo-activated molecular agent emits energy, detecting the energy emitted by the at least one photo-activated molecular agent, and producing a detected energy signal which is characteristic of the particular volume of plant or animal tissue. The present invention is also a method for the imaging of a particular volume of material, wherein the material contains at least one photo-active molecular agent. 13 figs.

  9. Virginia Regional Seismic Network. Final report (1986--1992)

    SciTech Connect (OSTI)

    Bollinger, G.A.; Sibol, M.S.; Chapman, M.C.; Snoke, J.A. [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (US). Seismological Observatory

    1993-07-01

    In 1986, the Virginia Regional Seismic Network was one of the few fully calibrated digital seismic networks in the United States. Continued operation has resulted in the archival of signals from 2,000+ local, regional and teleseismic sources. Seismotectonic studies of the central Virginia seismic zone showed the activity in the western part to be related to a large antiformal structure while seismicity in the eastern portion is associated spatially with dike swarms. The eastern Tennessee seismic zone extends over a 300x50 km area and is the result of a compressive stress field acting at the intersection between two large crustal blocks. Hydroseismicity, which proposes a significant role for meteoric water in intraplate seismogenesis, found support in the observation of common cyclicities between streamflow and earthquake strain data. Seismic hazard studies have provided the following results: (1) Damage areas in the eastern United States are three to five times larger than those observed in the west. (2) Judged solely on the basis of cataloged earthquake recurrence rates, the next major shock in the southeast region will probably occur outside the Charleston, South Carolina area. (3) Investigations yielded necessary hazard parameters (for example, maximum magnitudes) for several sites in the southeast. Basic to these investigations was the development and maintenance of several seismological data bases.

  10. Method and apparatus for actively controlling a micro-scale flexural plate wave device

    DOE Patents [OSTI]

    Dohner, Jeffrey L. (Albuquerque, NM)

    2001-01-01

    An actively controlled flexural plate wave device provides a micro-scale pump. A method of actively controlling a flexural plate wave device produces traveling waves in the device by coordinating the interaction of a magnetic field with actively controlled currents. An actively-controlled flexural plate wave device can be placed in a fluid channel and adapted for use as a micro-scale fluid pump to cool or drive micro-scale systems, for example, micro-chips, micro-electrical-mechanical devices, micro-fluid circuits, or micro-scale chemical analysis devices.

  11. Broadband calibration of R//V Ewing seismic sources M. Tolstoy, J. B. Diebold, S. C. Webb, D. R. Bohnenstiehl, E. Chapp,

    E-Print Network [OSTI]

    Bohnenstiehl, Delwayne

    increases, the impact of these activities, including shipping, naval oper- ations and seismic exploration., 2004]. [3] Seismic research, including oil exploration and geo- physical studies, has been ongoingBroadband calibration of R//V Ewing seismic sources M. Tolstoy, J. B. Diebold, S. C. Webb, D. R

  12. Design of HVDC converter station equipment subject to severe seismic performance requirements

    SciTech Connect (OSTI)

    Enblom, R. ); Coad, J.N.O. ); Berggren, S. )

    1993-10-01

    Severe seismic design levels were specified for the upgrading of the HVDC link between the principal islands of New Zealand. A number of novel design solutions were required to fulfill the performance requirements for the electric equipment. The purpose of this paper is to give an overview of design solutions and verification methods in the light of a specification stating performance criteria rather than specific allowables. Modifications to items of high voltage electrical equipment are described that reduce the seismic loads in the equipment and enable standard equipment to be used in areas of high seismicity. The seismic performance is further improved by controlling the eventual collapse mechanism.

  13. Seismic event classification system

    DOE Patents [OSTI]

    Dowla, Farid U. (Castro Valley, CA); Jarpe, Stephen P. (Brentwood, CA); Maurer, William (Livermore, CA)

    1994-01-01

    In the computer interpretation of seismic data, the critical first step is to identify the general class of an unknown event. For example, the classification might be: teleseismic, regional, local, vehicular, or noise. Self-organizing neural networks (SONNs) can be used for classifying such events. Both Kohonen and Adaptive Resonance Theory (ART) SONNs are useful for this purpose. Given the detection of a seismic event and the corresponding signal, computation is made of: the time-frequency distribution, its binary representation, and finally a shift-invariant representation, which is the magnitude of the two-dimensional Fourier transform (2-D FFT) of the binary time-frequency distribution. This pre-processed input is fed into the SONNs. These neural networks are able to group events that look similar. The ART SONN has an advantage in classifying the event because the types of cluster groups do not need to be pre-defined. The results from the SONNs together with an expert seismologist's classification are then used to derive event classification probabilities.

  14. Seismic event classification system

    DOE Patents [OSTI]

    Dowla, F.U.; Jarpe, S.P.; Maurer, W.

    1994-12-13

    In the computer interpretation of seismic data, the critical first step is to identify the general class of an unknown event. For example, the classification might be: teleseismic, regional, local, vehicular, or noise. Self-organizing neural networks (SONNs) can be used for classifying such events. Both Kohonen and Adaptive Resonance Theory (ART) SONNs are useful for this purpose. Given the detection of a seismic event and the corresponding signal, computation is made of: the time-frequency distribution, its binary representation, and finally a shift-invariant representation, which is the magnitude of the two-dimensional Fourier transform (2-D FFT) of the binary time-frequency distribution. This pre-processed input is fed into the SONNs. These neural networks are able to group events that look similar. The ART SONN has an advantage in classifying the event because the types of cluster groups do not need to be pre-defined. The results from the SONNs together with an expert seismologist's classification are then used to derive event classification probabilities. 21 figures.

  15. Integrated seismic study of naturally fractured tight gas reservoirs

    SciTech Connect (OSTI)

    Mavko, G.M.; Nur, A.

    1993-12-31

    Reflection seismic methods are, and will continue to be, the key geophysical tool for imaging these heterogeneities in the subsurface of the earth. However, in spite of great advances in field acquisition techniques and computer processing power, the primary product of conventional seismic work is still only the spatial pattern of reflectivity, which is a measure of velocity variations. Most of the amplitude information goes unused. Although fracture zones may have a reflectivity signature, more often they will not, because of steeply dipping angles, limited offset range in the acquisition, a subtle impedance mismatch, or too thin a fractured zone relative to the wavelength. In fact, there is probably no single seismic attribute that will always tell us what we need to know about fracture zones. Our objective, in the project, is to integrate the principles of rock physics into a quantitative interpretation scheme that exploits the broader spectrum of fracture zone signatures: anomalous compressional and shear wave velocities; Q and velocity dispersion; increased velocity anisotropy amplitude variation with offset (AVO) response. Our goal is to incorporate four key elements: Acquisition and processing of seismic reflection field data. Theoretical studies of the anisotropic signatures of fractured rocks. Laboratory measurements of seismic velocity, velocity anisotropy, and attenuation in reservoir and cap rocks. Integration and interpretation of seismic, well log, and laboratory data, incorporating forward modeling.

  16. Annual Hanford Seismic Report for Fiscal Year 2008

    SciTech Connect (OSTI)

    Rohay, Alan C.; Sweeney, Mark D.; Hartshorn, Donald C.; Clayton, Ray E.; Devary, Joseph L.

    2008-12-29

    The Hanford Seismic Assessment Program (HSAP) provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network for the U.S. Department of Energy and its contractors. The HSAP is responsible for locating and identifying sources of seismic activity and monitoring changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by the Hanford Site for waste management, natural phenomena hazards assessments, and engineering design and construction. In addition, the HSAP works with the Hanford Site Emergency Services Organization to provide assistance in the event of a significant earthquake on the Hanford Site. The Hanford Seismic Network and the Eastern Washington Regional Network consist of 44 individual sensor sites and 15 radio relay sites maintained by the Hanford Seismic Assessment Team. During fiscal year 2008, the Hanford Seismic Network recorded 1431 triggers on the seismometer system, which included 112 seismic events in the southeast Washington area and an additional 422 regional and teleseismic events. There were 74 events determined to be local earthquakes relevant to the Hanford Site. The highest-magnitude event (3.7 Mc) occurred on May 18, 2008, and was located approximately 17 km east of Prosser at a depth of 20.5 km. With regard to the depth distribution, 13 earthquakes were located at shallow depths (less than 4 km, most likely in the Columbia River basalts), 45 earthquakes were located at intermediate depths (between 4 and 9 km, most likely in the pre-basalt sediments), and 16 earthquakes were located at depths greater than 9 km, within the crystalline basement. Geographically, 54 earthquakes were located in swarm areas and 20 earthquakes were classified as random events. The May 18 earthquake was the highest magnitude event recorded since 1975 in the vicinity of the Hanford Site (between 46 degrees and 47 degrees north latitude and 119 degrees and 120 degrees west longitude). The event was not reported as being felt on the Hanford Site or causing any damage and was communicated to the Pacific Northwest National Laboratory Operations Center per HSAP communications procedures. The event is not considered to be significant with regard to site safety and not unprecedented given the sites seismic history. The Hanford strong motion accelerometer (SMA) stations at the 200 East Area, 300 Area, and 400 Area were triggered by the May 18 event. The maximum acceleration recorded at the SMA stations (0.17% at the 300 Area) was 12 times smaller than the reportable action level (2% g) for Hanford Site facilities.

  17. Clustering Analysis of Seismicity and Aftershock Identification

    E-Print Network [OSTI]

    2008-06-26

    Jun 30, 2008 ... ... a statistical methodology for clustering analysis of seismicity in the time-space-

  18. SEISMIC INTERFEROMETRY FOR TEMPORAL MONITORING Norimitsu Nakata

    E-Print Network [OSTI]

    Snieder, Roel

    SEISMIC INTERFEROMETRY FOR TEMPORAL MONITORING by Norimitsu Nakata #12;c Copyright by Norimitsu Seismic interferometry, where one computes coherency of waves between two or more receivers and averages from the first study related to seismic interferometry (although the name of seismic interferometry has

  19. Spatial Orientation And Distribution Of Reservoir Fractures From Scattered Seismic Energy

    E-Print Network [OSTI]

    Vetri, Laura

    2004-01-01

    Expanded details and additional results are presented using a new method (Willis et al, 2003) for determining the reflection and scattering characteristics of seismic energy from subsurface fractured formations. The method ...

  20. Spatial Orientation And Distribution Of Reservoir Fractures From Scattered Seismic Energy

    E-Print Network [OSTI]

    Vetri, Laura

    2005-01-01

    We present the details of a new method for determining the reflection and scattering characteristics of seismic energy from subsurface fractured formations. The method is based upon observations we have made from 3D finite ...

  1. Estimation Of Reservoir Properties From Seismic Data By Smooth Neural Networks

    E-Print Network [OSTI]

    Saggaf, Muhammad M.

    2000-01-01

    Traditional joint inversion methods reqnire an a priori prescribed operator that links the reservoir properties to the observed seismic response. The methods also rely on a linearized approach to the solution that makes ...

  2. Seismic Determination of Reservoir Heterogeneity: Application to the Characterization of Heavy Oil Reservoirs

    SciTech Connect (OSTI)

    Imhof, Matthias G.; Castle, James W.

    2003-03-12

    The objective of the project was to examine how seismic and geologic data could be used to improve characterization of small-scale heterogeneity and their parameterization in reservoir models. Performed a theoretical and numerical study to examine which subsurface features the surface seismic method actually resolves.

  3. Stochastic inversion of seismic PP and PS data for reservoir parameter estimation

    E-Print Network [OSTI]

    Chen, Jinsong

    Stochastic inversion of seismic PP and PS data for reservoir parameter estimation Jinsong Chen1-based Bayesian method developed previously for inverting seismic PP data only, by including PS responses and time et al., 2013) and res- ervoir characterization (Brettwood et al., 2013). In this study, we use

  4. Lunar Subsurface Investigated from Correlation of Seismic Noise E. Larose and M. Campillo

    E-Print Network [OSTI]

    Boyer, Edmond

    School of Geosciences, The University of Texas at Austin, Texas, USA By correlating seismic noise, these studies have shown that a statistical treatment of seismic noise yield the GF when averaged over nor an atmosphere exists. In particular, our aim is to investigate the method in the case where

  5. What is a seismic reflector like? Nathalie Favretto-Cristini1

    E-Print Network [OSTI]

    Boyer, Edmond

    -tracing procedure in complex 2D and 3D structures. The first method, called Fresnel vol- ume ray tracing Cerven into the wave reflection process, this study might have significant implications for seismic interpretation using amplitude-variation-with-angle methodologies. INTRODUCTION The basis of many seismic studies

  6. Imaging seismic velocity structure beneath the Iceland hot spot: A finite frequency approach

    E-Print Network [OSTI]

    Shen, Yang

    Imaging seismic velocity structure beneath the Iceland hot spot: A finite frequency approach Shu and S wave speeds extending from shallow mantle to 400 km depth beneath Iceland. In reality, seismic waves anomaly beneath Iceland and its geodynamic implications. We developed a tomographic method that utilizes

  7. Method for improved selectivity in photo-activation of molecular agents

    DOE Patents [OSTI]

    Fisher, Walter G. (Knoxville, TN); Wachter, Eric A. (Oak Ridge, TN); Dees, H. Craig (Knoxville, TN)

    1998-01-01

    A method for the treatment of a particular volume of plant or animal tissue comprising the steps of treating the plant or animal tissue with at least one photo-active molecular agent, wherein the particular volume of the plant or animal tissue retains at least a portion of the at least one photo-active molecular agent, and then treating the particular volume of the plant or animal tissue with light sufficient to promote a simultaneous two-photon excitation of at least one of the at least one photo-active molecular agent retained in the particular volume of the plant or animal tissue, wherein the at least one photo-active molecular agent becomes active in the particular volume of the plant or animal tissue. There is also disclosed a method for the treatment of cancer in plant or animal tissue and a method for producing at least one photo-activated molecular agent in a particular volume of a material.

  8. Method for improved selectivity in photo-activation of molecular agents

    DOE Patents [OSTI]

    Fisher, W.G.; Wachter, E.A.; Dees, H.C.

    1998-11-03

    A method for the treatment of a particular volume of plant or animal tissue comprising the steps of treating the plant or animal tissue with at least one photo-active molecular agent, wherein the particular volume of the plant or animal tissue retains at least a portion of the at least one photo-active molecular agent, and then treating the particular volume of the plant or animal tissue with light sufficient to promote a simultaneous two-photon excitation of at least one of the at least one photo-active molecular agent retained in the particular volume of the plant or animal tissue, wherein the at least one photo-active molecular agent becomes active in the particular volume of the plant or animal tissue. There is also disclosed a method for the treatment of cancer in plant or animal tissue and a method for producing at least one photo-activated molecular agent in a particular volume of a material. 23 figs.

  9. Method for improved selectivity in photo-activation of molecular agents

    DOE Patents [OSTI]

    Fisher, Walter G. (Knoxville, TN); Wachter, Eric A. (Oak Ridge, TN); Dees, H. Craig (Knoxville, TN)

    1999-01-01

    A method for the treatment of a particular volume of plant or animal tissue comprising the steps of treating the plant or animal tissue with at least one photo-active molecular agent, wherein the particular volume of the plant or animal tissue retains at least a portion of the at least one photo-active molecular agent, and then treating the particular volume of the plant or animal tissue with light sufficient to promote a simultaneous two-photon excitation of at least one of the at least one photo-active molecular agent retained in the particular volume of the plant or animal tissue, wherein the at least one photo-active molecular agent becomes active in the particular volume of the plant or animal tissue. There is also disclosed a method for the treatment of cancer in plant or animal tissue and a method for producing at least one photo-activated molecular agent in a particular volume of a material.

  10. Calibration of Seismic Attributes for Reservoir Characterization

    SciTech Connect (OSTI)

    Pennington, Wayne D.; Acevedo, Horacio; Green, Aaron; Len, Shawn; Minavea, Anastasia; Wood, James; Xie, Deyi

    2002-01-29

    This project has completed the initially scheduled third year of the contract, and is beginning a fourth year, designed to expand upon the tech transfer aspects of the project. From the Stratton data set, demonstrated that an apparent correlation between attributes derived along `phantom' horizons are artifacts of isopach changes; only if the interpreter understands that the interpretation is based on this correlation with bed thickening or thinning, can reliable interpretations of channel horizons and facies be made. From the Boonsville data set , developed techniques to use conventional seismic attributes, including seismic facies generated under various neural network procedures, to subdivide regional facies determined from logs into productive and non-productive subfacies, and developed a method involving cross-correlation of seismic waveforms to provide a reliable map of the various facies present in the area. The Teal South data set provided a surprising set of data, leading us to develop a pressure-dependent velocity relationship and to conclude that nearby reservoirs are undergoing a pressure drop in response to the production of the main reservoir, implying that oil is being lost through their spill points, never to be produced. The Wamsutter data set led to the use of unconventional attributes including lateral incoherence and horizon-dependent impedance variations to indicate regions of former sand bars and current high pressure, respectively, and to evaluation of various upscaling routines.

  11. High vertical resolution crosswell seismic imaging

    DOE Patents [OSTI]

    Lazaratos, Spyridon K. (Houston, TX)

    1999-12-07

    A method for producing high vertical resolution seismic images from crosswell data is disclosed. In accordance with one aspect of the disclosure, a set of vertically spaced, generally horizontally extending continuous layers and associated nodes are defined within a region between two boreholes. The specific number of nodes is selected such that the value of a particular characteristic of the subterranean region at each of the nodes is one which can be determined from the seismic data. Once values are established at the nodes, values of the particular characteristic are assigned to positions between the node points of each layer based on the values at node within that layer and without regard to the values at node points within any other layer. A seismic map is produced using the node values and the assigned values therebetween. In accordance with another aspect of the disclosure, an approximate model of the region is established using direct arrival traveltime data. Thereafter, the approximate model is adjusted using reflected arrival data. In accordance with still another aspect of the disclosure, correction is provided for well deviation. An associated technique which provides improvements in ray tracing is also disclosed.

  12. SEISMIC ANALYSIS FOR PRECLOSURE SAFETY

    SciTech Connect (OSTI)

    E.N. Lindner

    2004-12-03

    The purpose of this seismic preclosure safety analysis is to identify the potential seismically-initiated event sequences associated with preclosure operations of the repository at Yucca Mountain and assign appropriate design bases to provide assurance of achieving the performance objectives specified in the Code of Federal Regulations (CFR) 10 CFR Part 63 for radiological consequences. This seismic preclosure safety analysis is performed in support of the License Application for the Yucca Mountain Project. In more detail, this analysis identifies the systems, structures, and components (SSCs) that are subject to seismic design bases. This analysis assigns one of two design basis ground motion (DBGM) levels, DBGM-1 or DBGM-2, to SSCs important to safety (ITS) that are credited in the prevention or mitigation of seismically-initiated event sequences. An application of seismic margins approach is also demonstrated for SSCs assigned to DBGM-2 by showing a high confidence of a low probability of failure at a higher ground acceleration value, termed a beyond-design basis ground motion (BDBGM) level. The objective of this analysis is to meet the performance requirements of 10 CFR 63.111(a) and 10 CFR 63.111(b) for offsite and worker doses. The results of this calculation are used as inputs to the following: (1) A classification analysis of SSCs ITS by identifying potential seismically-initiated failures (loss of safety function) that could lead to undesired consequences; (2) An assignment of either DBGM-1 or DBGM-2 to each SSC ITS credited in the prevention or mitigation of a seismically-initiated event sequence; and (3) A nuclear safety design basis report that will state the seismic design requirements that are credited in this analysis. The present analysis reflects the design information available as of October 2004 and is considered preliminary. The evolving design of the repository will be re-evaluated periodically to ensure that seismic hazards are properly evaluated and identified. This document supersedes the seismic classifications, assignments, and computations in ''Seismic Analysis for Preclosure Safety'' (BSC 2004a).

  13. Methods, microfluidic devices, and systems for detection of an active enzymatic agent

    DOE Patents [OSTI]

    Sommer, Gregory J; Hatch, Anson V; Singh, Anup K; Wang, Ying-Chih

    2014-10-28

    Embodiments of the present invention provide methods, microfluidic devices, and systems for the detection of an active target agent in a fluid sample. A substrate molecule is used that contains a sequence which may cleave in the presence of an active target agent. A SNAP25 sequence is described, for example, that may be cleaved in the presence of Botulinum Neurotoxin. The substrate molecule includes a reporter moiety. The substrate molecule is exposed to the sample, and resulting reaction products separated using electrophoretic separation. The elution time of the reporter moiety may be utilized to identify the presence or absence of the active target agent.

  14. Seismic Imaging and Inversion: Application of Linear Theory (2012), Cambridge University Press, co-authored with Bob Stolt

    SciTech Connect (OSTI)

    Weglein, Arthur B.; Stolt, Bob H.

    2012-03-01

    Extracting information from seismic data requires knowledge of seismic wave propagation and reflection. The commonly used method involves solving linearly for a reflectivity at every point within the Earth, but this book follows an alternative approach which invokes inverse scattering theory. By developing the theory of seismic imaging from basic principles, the authors relate the different models of seismic propagation, reflection and imaging - thus providing links to reflectivity-based imaging on the one hand and to nonlinear seismic inversion on the other. The comprehensive and physically complete linear imaging foundation developed presents new results at the leading edge of seismic processing for target location and identification. This book serves as a fundamental guide to seismic imaging principles and algorithms and their foundation in inverse scattering theory and is a valuable resource for working geoscientists, scientific programmers and theoretical physicists.

  15. Bulletin of the Seismological Society of America, Vol. 94, No. 6, pp. 21372163, December 2004 A Probabilistic Approach to Seismic Hazard in Metropolitan France

    E-Print Network [OSTI]

    Avouac, Jean-Philippe

    methods to seismic hazard assessment in France. This study differs from previous studies that have adopted A Probabilistic Approach to Seismic Hazard in Metropolitan France by Sylvie Marin, Jean-Philippe Avouac,* Marc Nicolas, and Antoine Schlupp Abstract In this study, we applied a probabilistic methodology to seismic

  16. Downhole hydraulic seismic generator

    DOE Patents [OSTI]

    Gregory, Danny L. (Corrales, NM); Hardee, Harry C. (Albuquerque, NM); Smallwood, David O. (Albuquerque, NM)

    1992-01-01

    A downhole hydraulic seismic generator system for transmitting energy wave vibrations into earth strata surrounding a borehole. The system contains an elongated, unitary housing operably connected to a well head aboveground by support and electrical cabling, and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a hydraulic oscillator containing a double-actuating piston whose movement is controlled by an electro-servovalve regulating a high pressure hydraulic fluid flow into and out of upper and lower chambers surrounding the piston. The spent hydraulic fluid from the hydraulic oscillator is stored and pumped back into the system to provide high pressure fluid for conducting another run at the same, or a different location within the borehole.

  17. Visualization of time-dependent seismic vector fields with glyphs

    E-Print Network [OSTI]

    McQuinn, Emmett

    2010-01-01

    for rigorous seismic data exploration. Thus the mo- tivationsliprate for rich exploration of seismic data. Related Worksand interactive exploration of seismic data. The proposed

  18. Seismic Analysis of Facilities and Evaluation of Risk | Department...

    Office of Environmental Management (EM)

    Seismic Analysis of Facilities and Evaluation of Risk Seismic Analysis of Facilities and Evaluation of Risk Seismic Analysis of Facilities and Evaluation of Risk Michael Salmon,...

  19. Analysis Procedures to Estimate Seismic Demands of Structures...

    Office of Environmental Management (EM)

    Laboratory Plutonium Facility (PF-4) Seismic Safety May 2015 Seismic Lessons-Learned Panel Meeting Agenda Risk-Informed Design of Seismic Isolation Systems for Nuclear Facilities...

  20. Seismic and infrasonic source processes in volcanic fluid systems

    E-Print Network [OSTI]

    Matoza, Robin S.

    2009-01-01

    into a volcano-seismic source process in low-viscosityDIEGO Seismic and infrasonic source processes in volcanicTHE DISSERTATION Seismic and infrasonic source processes in

  1. Seismic and infrasonic source processes in volcanic fluid systems

    E-Print Network [OSTI]

    Matoza, Robin S.

    2009-01-01

    A broadband seismic and infrasound array deployment at MountNumerical experiments . . . . . . . .1. Seismic- acousticFigure 3.2: Infrasonic and seismic waveforms at CDWR for an

  2. Seismic anisotropy changes across upper mantle phase transitions

    E-Print Network [OSTI]

    Yuan, K; Beghein, C

    2013-01-01

    P. , 2000. Upper mantle seismic discontinuities. In: Karato,2005. Global azimuthal seismic anisotropy and the unique22552258. Karato, S. , 1998. Seismic anisotropy in the deep

  3. Seismic Soil-Foundation-Structure Interaction in Urban Environments /

    E-Print Network [OSTI]

    Trombetta, Nicholas Wade

    2013-01-01

    326 6.4.4 Aggregate Seismic Demands: All Candidate ModelsAggregate Peak Seismic Demands . . . . . . . . . . . . . .3.3.6.3 Correlation of seismic spectral demands and

  4. Static behaviour of induced seismicity

    E-Print Network [OSTI]

    Mignan, Arnaud

    2015-01-01

    The standard paradigm to describe seismicity induced by fluid injection is to apply nonlinear diffusion dynamics in a poroelastic medium. I show that the spatiotemporal behaviour and rate evolution of induced seismicity can, instead, be expressed by geometric operations on a static stress field produced by volume change at depth. I obtain laws similar in form to the ones derived from poroelasticity while requiring a lower description length. Although fluid flow is known to occur in the ground, it is not pertinent to the behaviour of induced seismicity. The proposed model is equivalent to the static stress model for tectonic foreshocks generated by the Non- Critical Precursory Accelerating Seismicity Theory. This study hence verifies the explanatory power of this theory outside of its original scope.

  5. Three-dimensional seismic velocity structure of Mauna Loa and Kilauea volcanoes in Hawaii from local seismic tomography

    E-Print Network [OSTI]

    Lin, G; Shearer, PM; Matoza, RS; Okubo, PG; Amelung, F

    2014-01-01

    H. , and M. P. Poland (2013), Seismic detection of increasedPap. , Lin, G. (2013), Seismic investigation of magmaticdimensional crustal seismic velocity model for southern

  6. Method of increasing the rate of hydration of activated hydroethyl cellulose compositions

    SciTech Connect (OSTI)

    House, R. F.; Hoover, L. D.

    1984-10-09

    A method of producing a well servicing fluid containing zinc bromide in which an activated hydroxyethyl cellulose is either admixed with a zinc bromide solution containing above about 30% by weight zinc bromide, or, in the alternative, is admixed with a non-zinc bromide containing solution to produce a viscosified solution which is then admixed with a zinc bromide containing solution.

  7. Noisy clocks and silent sunrises: measurement methods of daily activity pattern

    E-Print Network [OSTI]

    Courchamp, Franck

    intensity or ambient temperature and thus of the sun's position in the sky: time of sunrise, zenith; distribution of activity. Correspondence Pierre Nouvellet. Current address: Biology and Environmental Science with the actual position of the sun. To demonstrate the important difference between these methods of analysis, we

  8. Active Vibration Control on A 3-DOF Parallel Platform Based on Kane's Dynamics Method

    E-Print Network [OSTI]

    Li, Yangmin

    - 2783 - Active Vibration Control on A 3-DOF Parallel Platform Based on Kane's Dynamics Method Yuan be impossible without a careful isolation of the instrument from the vibration sources. To reduce the vibration low remaining vibration level. This paper is concerned with the development of a vibration isolation

  9. Advanced downhole periodic seismic generator

    DOE Patents [OSTI]

    Hardee, Harry C. (Albuquerque, NM); Hills, Richard G. (Las Cruces, NM); Striker, Richard P. (Albuquerque, NM)

    1991-07-16

    An advanced downhole periodic seismic generator system for transmitting variable frequency, predominantly shear-wave vibration into earth strata surrounding a borehole. The system comprises a unitary housing operably connected to a well head by support and electrical cabling and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a variable speed pneumatic oscillator and a self-contained pneumatic reservoir for producing a frequency-swept seismic output over a discrete frequency range.

  10. Down hole periodic seismic generator

    DOE Patents [OSTI]

    Hardee, Harry C. (Albuquerque, NM); Hills, Richard G. (Las Cruces, NM); Striker, Richard P. (Albuquerque, NM)

    1989-01-01

    A down hole periodic seismic generator system for transmitting variable frequency, predominantly shear-wave vibration into earth strata surrounding a borehole. The system comprises a unitary housing operably connected to a well head by support and electrical cabling and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a variable speed pneumatic oscillator and a self-contained pneumatic reservoir for producing a frequency-swept seismic output over a discrete frequency range.

  11. Shielding and activity estimator for template-based nuclide identification methods

    DOE Patents [OSTI]

    Nelson, Karl Einar

    2013-04-09

    According to one embodiment, a method for estimating an activity of one or more radio-nuclides includes receiving one or more templates, the one or more templates corresponding to one or more radio-nuclides which contribute to a probable solution, receiving one or more weighting factors, each weighting factor representing a contribution of one radio-nuclide to the probable solution, computing an effective areal density for each of the one more radio-nuclides, computing an effective atomic number (Z) for each of the one more radio-nuclides, computing an effective metric for each of the one or more radio-nuclides, and computing an estimated activity for each of the one or more radio-nuclides. In other embodiments, computer program products, systems, and other methods are presented for estimating an activity of one or more radio-nuclides.

  12. SEISMIC ATTENUATION FOR RESERVOIR CHARACTERIZATION

    SciTech Connect (OSTI)

    Joel Walls; M.T. Taner; Gary Mavko; Jack Dvorkin

    2002-07-01

    In fully-saturated rock and at ultrasonic frequencies, the microscopic squirt flow induced between the stiff and soft parts of the pore space by an elastic wave is responsible for velocity-frequency dispersion and attenuation. In the seismic frequency range, it is the macroscopic cross-flow between the stiffer and softer parts of the rock. We use the latter hypothesis to introduce simple approximate equations for velocity-frequency dispersion and attenuation in a fully water saturated reservoir. The equations are based on the assumption that in heterogeneous rock and at a very low frequency, the effective elastic modulus of the fully-saturated rock can be estimated by applying a fluid substitution procedure to the averaged (upscaled) dry frame whose effective porosity is the mean porosity and the effective elastic modulus is the Backus-average (geometric mean) of the individual dry-frame elastic moduli of parts of the rock. At a higher frequency, the effective elastic modulus of the saturated rock is the Backus-average of the individual fully-saturated-rock elastic moduli of parts of the rock. The difference between the effective elastic modulus calculated separately by these two methods determines the velocity-frequency dispersion. The corresponding attenuation is calculated from this dispersion by using (e.g.) the standard linear solid attenuation model.

  13. Exploring the Manifold of Seismic Waves: Application to the Estimation of Arrival-Times

    E-Print Network [OSTI]

    Kye M. Taylor; Michael J. Procopio; Christopher J. Young; Francois G. Meyer

    2010-07-22

    We propose a new method to analyze seismic time series and estimate the arrival-times of seismic waves. Our approach combines two ingredients: the times series are first lifted into a high-dimensional space using time-delay embedding; the resulting phase space is then parametrized using a nonlinear method based on the eigenvectors of the graph Laplacian. We validate our approach using a dataset of seismic events that occurred in Idaho, Montana, Wyoming, and Utah, between 2005 and 2006. Our approach outperforms methods based on singular-spectrum analysis, waveleta nalysis, and STA/LTA.

  14. Exploring the Manifold of Seismic Waves: Application to the Estimation of Arrival-Times

    E-Print Network [OSTI]

    Taylor, K M; Young, C J; Meyer, F G

    2010-01-01

    We propose a new method to analyze seismic time series and estimate the arrival-times of seismic waves. Our approach combines two ingredients: the times series are first lifted into a high-dimensional space using time-delay embedding; the resulting phase space is then parametrized using a nonlinear method based on the eigenvectors of the graph Laplacian. We validate our approach using a dataset of seismic events that occurred in Idaho, Montana, Wyoming, and Utah, between 2005 and 2006. Our approach outperforms methods based on singular-spectrum analysis, waveleta nalysis, and STA/LTA.

  15. Annual Hanford Seismic Report for Fiscal Year 1998

    SciTech Connect (OSTI)

    DC Hartshorn; SP Reidel; AC Rohay

    1998-12-22

    Seismic monitoring at the Hanford Site was established in 1969 by the United States Geological Survey (USGS) under a contract with theJ.J.S. Atomic Energy Commission. In 1975, the University of Washington (UW) assumed responsibility for the network and subsequently expanded it. In 1979, the Basalt Waste o Isolation Program (13WIP) became responsible for collecting seismic data for the Hdord Site as part of site " characterization activities. Rockwell Htiord Operations, followed by Westinghouse Ha&ord Company . (WHC), operated the local network and were the contract technical advisors for the Eastern Washington Regional Network @wRN) operated and maintained by the UW. Funding for BWIP ended in December 1988. Seismic Monitoring and responsibility for the University of Washington contract were then trans- ferred to WHC'S Environmental Division. Maintenance responsibilities for the EWRN were also Assigned to WHC, who made major upgrades to EWRN sites. Effective October 1,1996, Seismic Monitoring was transfemed to the Pacific Northwest National Laboratory (PI@lL*). Seismic Monitoring is part of PNNL's Applied Geology and Geochemistry Group, Energy Technology Division. The Hanford Strong Motion Accelerometer network was constructed during 1997 and came online in May 1997. It operated continuously until September 30, 1997, when it was mothballed due to can- . cellation of fimding. Funding was restored on October 1, 1998, by joint agreement between the U.S. Department of Energy (DOE) and PNNL. Operation of the free-field sites resumed on November 20, 1998.

  16. Megaregional seismic approach to new play concept development

    SciTech Connect (OSTI)

    Bertagne, A.J.; Vuillermoz, C.; Maxwell, R.A.

    1989-03-01

    A megaregional seismic line is a continuous line that traverses more than one basin. After such a line is interpreted using well control, surface geology, and other available data, it serves as a concise expression of our understanding of the geology along a transect and provides a starting point for developing new play concepts. Megaregional seismic lines aid in the development of exploration concepts by providing new insights into (1) what is and is not basement, (2) maturation history and migration pathways, (3) regional structural geology, and (4) regional stratigraphy. An ongoing project to prepare a series of interpreted transcontinental megaregional seismic lines uses a segment that starts in the Arkoma basin of Oklahoma, traverses the Ouachita thrust belt, and terminates at the northern Texas Gulf coastal plain. This segment shows that several potential plays exist, both structural and stratigraphic, between areas of current exploration activity. Regional seismic lines from the Sacramento Valley and the Illinois basin further illustrate how interpretation of long seismic lines can lead to new exploration ideas.

  17. 2D Seismic Reflection Data across Central Illinois

    SciTech Connect (OSTI)

    Smith, Valerie; Leetaru, Hannes

    2014-09-30

    In a continuing collaboration with the Midwest Geologic Sequestration Consortium (MGSC) on the Evaluation of the Carbon Sequestration Potential of the Cambro-Ordovician Strata of the Illinois and Michigan Basins project, Schlumberger Carbon Services and WesternGeco acquired two-dimensional (2D) seismic data in the Illinois Basin. This work included the design, acquisition and processing of approximately 125 miles of (2D) seismic reflection surveys running west to east in the central Illinois Basin. Schlumberger Carbon Services and WesternGeco oversaw the management of the field operations (including a pre-shoot planning, mobilization, acquisition and de-mobilization of the field personnel and equipment), procurement of the necessary permits to conduct the survey, post-shoot closure, processing of the raw data, and provided expert consultation as needed in the interpretation of the delivered product. Three 2D seismic lines were acquired across central Illinois during November and December 2010 and January 2011. Traversing the Illinois Basin, this 2D seismic survey was designed to image the stratigraphy of the Cambro-Ordovician sections and also to discern the basement topography. Prior to this survey, there were no regionally extensive 2D seismic data spanning this section of the Illinois Basin. Between the NW side of Morgan County and northwestern border of Douglas County, these seismic lines ran through very rural portions of the state. Starting in Morgan County, Line 101 was the longest at 93 miles in length and ended NE of Decatur, Illinois. Line 501 ran W-E from the Illinois Basin Decatur Project (IBDP) site to northwestern Douglas County and was 25 miles in length. Line 601 was the shortest and ran N-S past the IBDP site and connected lines 101 and 501. All three lines are correlated to well logs at the IBDP site. Originally processed in 2011, the 2D seismic profiles exhibited a degradation of signal quality below ~400 millisecond (ms) which made interpretation of the Mt. Simon and Knox sections difficult. The data quality also gradually decreased moving westward across the state. To meet evolving project objectives, in 2012 the seismic data was re-processed using different techniques to enhance the signal quality thereby rendering a more coherent seismic profile for interpreters. It is believed that the seismic degradation could be caused by shallow natural gas deposits and Quaternary sediments (which include abandoned river and stream channels, former ponds, and swamps with peat deposits) that may have complicated or changed the seismic wavelet. Where previously limited by seismic coverage, the seismic profiles have provided valuable subsurface information across central Illinois. Some of the interpretations based on this survey included, but are not limited to: - Stratigraphy generally gently dips to the east from Morgan to Douglas County. - The Knox Supergroup roughly maintains its thickness. There is little evidence for faulting in the Knox. However, at least one resolvable fault penetrates the entire Knox section. - The Eau Claire Formation, the primary seal for the Mt. Simon Sandstone, appears to be continuous across the entire seismic profile. - The Mt. Simon Sandstone thins towards the western edge of the basin. As a result, the highly porous lowermost Mt. Simon section is absent in the western part of the state. - Overall basement dip is from west to east. - Basement topography shows evidence of basement highs with on-lapping patterns by Mt. Simon sediments. - There is evidence of faults within the lower Mt. Simon Sandstone and basement rock that are contemporaneous with Mt. Simon Sandstone deposition. These faults are not active and do not penetrate the Eau Claire Shale. It is believed that these faults are associated with a possible failed rifting event 750 to 560 million years ago during the breakup of the supercontinent Rodinia.

  18. Three-Dimensional Seismic Imaging of the Ryepatch Geothermal Reservoir

    E-Print Network [OSTI]

    Feighner, Mark A.

    2010-01-01

    support in the interpretation of the seismic and tomographicinterpretation is partially supported by the re- h s flection seismic

  19. Three-Dimensional Seismic Imaging of the Ryepatch Geothermal Reservoir

    E-Print Network [OSTI]

    Feighner, Mark A.

    2010-01-01

    potential process- ing of the proposed 3-D seismic surveyprocess and we would recommend this for future 3-D seismic

  20. Towards the Understanding of Induced Seismicity in Enhanced Geothermal...

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

    Documents & Publications Towards the Understanding of Induced Seismicity in Enhanced Geothermal Systems Protocol for Addressing Induced Seismicity Associated with Enhanced...

  1. Testing the potential and limitations of seismic data

    E-Print Network [OSTI]

    Orlagh L. Creevey

    2008-10-14

    I describe the advantage of using singular value decomposition as a diagnostic tool for exploring the potential and limitations of seismic data. Using stellar models coupled with the expected errors in seismic and complementary data we can predict the precision in the stellar parameters. This in turn allows us to quantify if and to what extent we can distinguish between various descriptions of the interior physical processes. This method can be applied to a wide range of astrophysical problems, and here I present one such example which shows that the convective core overshoot parameter can be constrained with one identified mode if the pulsating component is in an eclipsing binary system.

  2. 1 INTRODUCTION Seismic design provisions in building codes aim

    E-Print Network [OSTI]

    Baker, Jack W.

    1 INTRODUCTION Seismic design provisions in building codes aim to provide adequate collapse safety uncertainty for collapse safety assessment. A variety of reliability methods are explored and compared behavior of its components and its assessment requires non- linear analysis models that capture large

  3. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2003-06-30

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have studied (1) Methods for detection of stress-induced velocity anisotropy in sands. (2) We have initiated efforts for velocity upscaling to quantify long-wavelength and short-wavelength velocity behavior and the scale-dependent dispersion caused by sediment variability in different depositional environments.

  4. Prediction of cloud condensation nuclei activity for organic compounds using functional group contribution methods

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Petters, M. D.; Kreidenweis, S. M.; Ziemann, P. J.

    2015-09-01

    A wealth of recent laboratory and field experiments demonstrate that organic aerosol composition evolves with time in the atmosphere, leading to changes in the influence of the organic fraction to cloud condensation nuclei (CCN) spectra. There is a need for tools that can realistically represent the evolution of CCN activity to better predict indirect effects of organic aerosol on clouds and climate. This work describes a model to predict the CCN activity of organic compounds from functional group composition. The model combines Khler theory with semi-empirical group contribution methods to estimate molar volumes, activity coefficients and liquid-liquid phase boundaries tomorepredict the effective hygroscopicity parameter, kappa. Model evaluation against a selected database of published laboratory measurements demonstrates that kappa can be predicted within a factor of two. Simulation of homologous series is used to identify the relative effectiveness of different functional groups in increasing the CCN activity of weakly functionalized organic compounds. Hydroxyl, carboxyl, aldehyde, hydroperoxide, carbonyl, and ether moieties promote CCN activity while methylene and nitrate moieties inhibit CCN activity. The model can be incorporated into scale-bridging testbeds such as the Generator of Explicit Chemistry and Kinetics of Organics in the Atmosphere to evaluate the evolution of kappa for a complex mix of organic compounds and to develop suitable parameterizations of CCN evolution for larger scale models.less

  5. Method and apparatus for regenerating activated carbon containing an adsorbed volatile organic absorbate

    SciTech Connect (OSTI)

    Tiggelbeck, D.D.; Goyak, G.M.

    1993-07-27

    A method is described for regenerating spent activated carbon containing adsorbed volatile organic adsorbate comprising: establishing a confined downwardly moving bed of activated carbon; adding spent carbon to the top of said bed; introducing superheated steam into the bottom of said bed in contact with said carbon; recovering exit gas including predominantly superheated steam and volatilized adsorbate from the top of said bed; circulating a portion of said exit gas through a superheater and compressor to the bottom of said bed; withdrawing a portion of said exit gas through a cooler to condense steam and volatile adsorbate; continuously circulating superheated steam in a closed loop through said downwardly moving bed, said compressor and said superheater; recovering partially regenerated activated carbon containing residual volatile adsorbate from the bottom of said bed.

  6. SEISMIC HAZARD AND VULNERABILITY ASSESSMENT IN TURRIALBA, COSTA RICA Seismic hazard and vulnerability

    E-Print Network [OSTI]

    SEISMIC HAZARD AND VULNERABILITY ASSESSMENT IN TURRIALBA, COSTA RICA I Seismic hazard and vulnerability assessment in Turrialba, Costa Rica Rafael German Urban Lamadrid March 2002 #12;SEISMIC HAZARD AND VULNERABILITY ASSESSMENT IN TURRIALBA, COSTA RICA II Seismic hazard and vulnerability assessment in Turrialba

  7. Upper Klamath Lake Seismic Liberty and Pratt, 2000 1 Upper Klamath Lake Seismic Results

    E-Print Network [OSTI]

    Barrash, Warren

    Upper Klamath Lake Seismic Liberty and Pratt, 2000 1 Upper Klamath Lake Seismic Results October, 98195 Summary We collected greater than 200 km of seismic reflection data in Upper Klamath Lake independent seismic systems to digitally image subsurface sediment and rock interfaces to help DOGAMI complete

  8. Active Seismic Techniques | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAand DaltonSolar Energy LLC Jump to:

  9. Calibration of Seismic Attributes for Reservoir Characterization

    SciTech Connect (OSTI)

    Pennington, Wayne D.

    2002-05-29

    This project is intended to enhance the ability to use seismic data for the determination of rock and fluid properties through an improved understanding of the physics underlying the relationships between seismic attributes and formation.

  10. Subsurface imaging with reverse vertical seismic profiles

    E-Print Network [OSTI]

    Krasovec, Mary L. (Mary Lee), 1972-

    2001-01-01

    This thesis presents imaging results from a 3D reverse vertical seismic profile (RVSP) dataset measured at a hydrocarbon bearing pinnacle reef in northern Michigan. The study presented many challenges in seismic data ...

  11. Seismic Attribute Analysis Using Higher Order Statistics

    E-Print Network [OSTI]

    Greenidge, Janelle Candice

    2009-05-15

    Seismic data processing depends on mathematical and statistical tools such as convolution, crosscorrelation and stack that employ second-order statistics (SOS). Seismic signals are non-Gaussian and therefore contain information beyond SOS. One...

  12. Reservoir monitoring using induced seismicity at a petroleum field in Oman

    E-Print Network [OSTI]

    Sarkar, Sudipta

    2008-01-01

    This thesis presents methods of analysis and results from a petroleum reservoir monitoring application using induced seismicity data. The dissertation work is comprised of four major studies, each focusing on a different ...

  13. Image resolution analysis: a new, robust approach to seismic survey design

    E-Print Network [OSTI]

    Tzimeas, Constantinos

    2005-08-29

    Seismic survey design methods often rely on qualitative measures to provide an optimal image of their objective target. Fold, ray tracing techniques counting ray hits on binned interfaces, and even advanced 3-D survey ...

  14. Development of a HT Seismic Tool

    Office of Energy Efficiency and Renewable Energy (EERE)

    The program objective is to design; fabricate and field test two high temperature (HT) seismic tools in an EGS application.

  15. FAST Simulation of Seismic Wind Turbine Response

    SciTech Connect (OSTI)

    Prowell, I.; Elgamal, A.; Jonkman, J.

    2010-03-01

    This paper discusses recent additions to the computer simulation code FAST that allow a user to consider seismic loads.

  16. Time-dependent seismic tomography and its application to the Coso geothermal area, 1996-2006

    SciTech Connect (OSTI)

    Julian, B.R.; G.R. Foulger; F. Monastero

    2008-04-01

    Measurements of temporal changes in Earth structure are commonly determined using localearthquake tomography computer programs that invert multiple seismic-wave arrival time data sets separately and assume that any differences in the structural results arise from real temporal variations. This assumption is dangerous because the results of repeated tomography experiments would differ even if the structure did not change, simply because of variation in the seismic ray distribution caused by the natural variation in earthquake locations. Even if the source locations did not change (if only explosion data were used, for example), derived structures would inevitably differ because of observational errors. A better approach is to invert multiple data sets simultaneously, which makes it possible to determine what changes are truly required by the data. This problem is similar to that of seeking models consistent with initial assumptions, and techniques similar to the damped least squares method can solve it. We have developed a computer program, dtomo, that inverts multiple epochs of arrival-time measurements to determine hypocentral parameters and structural changes between epochs. We shall apply this program to data from the seismically active Coso geothermal area, California, in the near future. The permanent network operated there by the US Navy, supplemented by temporary stations, has provided excellent earthquake arrival-time data covering a span of more than a decade. Furthermore, structural change is expected in the area as a result of geothermal exploitation of the resource. We have studied the period 1996 through 2006. Our results to date using the traditional method show, for a 2-km horizontal grid spacing, an irregular strengthening with time of a negative VP/VS anomaly in the upper ~ 2 km of the reservoir. This progressive reduction in VP/VS results predominately from an increase of VS with respect to VP. Such a change is expected to result from effects of geothermal operations such as decreasing fluid pressure and the drying of argillaceous minerals such as illite.

  17. Post-processing of seismic parameter data based on valid seismic event determination

    DOE Patents [OSTI]

    McEvilly, Thomas V. (733 Alvarado Rd., Berkeley, CA 94705)

    1985-01-01

    An automated seismic processing system and method are disclosed, including an array of CMOS microprocessors for unattended battery-powered processing of a multi-station network. According to a characterizing feature of the invention, each channel of the network is independently operable to automatically detect, measure times and amplitudes, and compute and fit Fast Fourier transforms (FFT's) for both P- and S- waves on analog seismic data after it has been sampled at a given rate. The measured parameter data from each channel are then reviewed for event validity by a central controlling microprocessor and if determined by preset criteria to constitute a valid event, the parameter data are passed to an analysis computer for calculation of hypocenter location, running b-values, source parameters, event count, P- wave polarities, moment-tensor inversion, and Vp/Vs ratios. The in-field real-time analysis of data maximizes the efficiency of microearthquake surveys allowing flexibility in experimental procedures, with a minimum of traditional labor-intensive postprocessing. A unique consequence of the system is that none of the original data (i.e., the sensor analog output signals) are necessarily saved after computation, but rather, the numerical parameters generated by the automatic analysis are the sole output of the automated seismic processor.

  18. Seismic, shock, and vibration isolation - 1988

    SciTech Connect (OSTI)

    Chung, H. ); Mostaghel, N. )

    1988-01-01

    This book contains papers presented at a conference on pressure vessels and piping. Topics covered include: Design of R-FBI bearings for seismic isolation; Benefits of vertical and horizontal seismic isolation for LMR nuclear reactor units; and Some remarks on the use and perspectives of seismic isolation for fast reactors.

  19. Impact of seismic resolution on geostatistical techniques

    SciTech Connect (OSTI)

    Mukerji, T.; Rio, P.; Mavko, G.M.

    1995-12-31

    Seismic measurements are often incorporated in geostatistical techniques for estimation and simulation of petrophysical properties such as porosity. The good correlation between seismic and rock properties provides a basis for these techniques. Seismic data have a wide spatial coverage not available in log or core data. However, each seismic measurement has a characteristic response function determined by the source-receiver geometry and signal bandwidth. The image response of the seismic measurement gives a filtered version of the true velocity image. Therefore the seismic image we obtain cannot reflect exactly the true seismic velocity at all scales of spatial heterogeneities present in the earth. The seismic response function can be conveniently approximated in the spatial spectral domain using a Born approximation. Our goal is to study how the seismic image response affects the estimation of variograms and spatial scales, and its impact on geostatistical results. Limitations of view angles and signal bandwidth not only smoothes the seismic image, increasing the variogram range, but can also introduce anisotropic spatial structures in the image. We can add value to the seismic data by better characterizing an quantifying these attributes. As an exercise we present example of seismically assisted cosimulation of porosity between wells.

  20. CONSTRAINTS ON SUBDUCTION GEODYNAMICS FROM SEISMIC ANISOTROPY

    E-Print Network [OSTI]

    on the characterization and interpretation of seismic anisotropy can lead to progress, particularly in frontier areasCONSTRAINTS ON SUBDUCTION GEODYNAMICS FROM SEISMIC ANISOTROPY Maureen D. Long1 Received 4 October, and the interactions between slabs and deep discontinuities such as the core-mantle boundary. Observations of seismic

  1. April 20, 2010 Seismic Reflection V

    E-Print Network [OSTI]

    Ito, Garrett

    ? Vertical Resolution How thin a layer can we resolve? Dependent on seismic wavelength Reflectors are barely is an example of a "fully interpreted" seismic profile. What is the event history here? #12;4/19/2010 3 Here4/19/2010 1 GG450 April 20, 2010 Seismic Reflection V Data Interpretation I Today's material comes

  2. SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW

    E-Print Network [OSTI]

    Santos, Juan

    SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW J. E. Santos1, G. B. Savioli2, J. M. Carcione3, De, Argentina SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW p. #12;Introduction. I Storage of CO2). SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW p. #12;Introduction. II CO2 is separated from natural

  3. SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW

    E-Print Network [OSTI]

    Santos, Juan

    SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW J. E. Santos1 1 Department of Mathematics, Purdue University, USA Purdue University, March 1rst, 2013 SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW p. #12 (North Sea). SEISMIC MONITORING OF CARBON DIOXIDE FLUID FLOW p. #12;Introduction. II CO2 is separated

  4. SEISMIC SINGULARITY CHARACTERIZATION WITH REDUNDANT DICTIONARIES

    E-Print Network [OSTI]

    Fournier, John J.F.

    SEISMIC SINGULARITY CHARACTERIZATION WITH REDUNDANT DICTIONARIES by CATHERINE MAREVA DUPUIS Gradu of Mathematics The University of British Columbia Vancouver, Canada Date #12;Abstract We consider seismic signals of a seismic wave at a particular transition between two lithological layers in the subsurface. The location

  5. Seismic scattering in the subduction zone of the Middle America region

    E-Print Network [OSTI]

    Dominguez, Luis Antonio

    2012-01-01

    vi 4 Scattering of seismic waves in heterogenousvii 6 Evaluation of seismic scattering usingan alternative seismic network . .

  6. Seismic Performance and Modeling of Reinforced Concrete and Post-Tensioned Precast Concrete Shear Walls

    E-Print Network [OSTI]

    Tanyeri, Ahmet Can

    2014-01-01

    eds. ), Nonlinear Seismic Analysis of RC Buildings,vector-valued probabilistic seismic hazard analysisand probabilistic seismic demand analysis: Application to

  7. Frequent-Interval Seismic CPTu

    Office of Energy Efficiency and Renewable Energy (EERE)

    Frequent-Interval Seismic CPTu D. Bruce Nothdurft, MSCE, PE, PG SRS Geotechnical Engineering Department Savannah River Nuclear Solutions Alec V. McGillivray, PhD, PE Geotechnical Consultant Brent J. Gutierrez, PhD, PE NPH Engineering Manager, DOE-SR

  8. Test series 1: seismic-fragility tests of naturally-aged Class 1E Gould NCX-2250 battery cells

    SciTech Connect (OSTI)

    Bonzon, L. L.; Hente, D. B.; Kukreti, B. M.; Schendel, J. S.; Tulk, J. D.; Janis, W. J.; Black, D A; Paulsen, G. D.; Aucoin, B. D.

    1984-09-01

    The seismic-fragility response of naturally-aged, nuclear station, safety-related batteries is of interest for two reasons: (1) to determine actual failure modes and thresholds; and (2) to determine the validity of using the electrical capacity of individual cells as an indicator of the end-of-life of a battery, given a seismic event. This report covers the first test series of an extensive program using 12-year old, lead-calcium, Gould NCX-2250 cells, from the James A. Fitzpatrick Nuclear Power Station operated by the New York Power Authority. Seismic tests with three cell configurations were performed using a triaxial shake table: single-cell tests, rigidly mounted; multi-cell (three) tests, mounted in a typical battery rack; and single-cell tests specifically aimed towards examining propagation of pre-existing case cracks. In general the test philosophy was to monitor the electrical properties including discharge capacity of cells through a graduated series of g-level step increases until either the shake-table limits were reached or until electrical failure of the cells occurred. Of nine electrically active cells, six failed during seismic testing over a range of imposed g-level loads in excess of a 1-g ZPA. Post-test examination revealed a common failure mode, the cracking at the abnormally brittle, positive lead bus-bar/post interface; further examination showed that the failure zone was extremely coarse grained and extensively corroded. Presently accepted accelerated-aging methods for qualifying batteries, per IEEE Std. 535-1979, are based on plate growth, but these naturally-aged 12-year old cells showed no significant plate growth.

  9. IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 58, NO. 5, MAY 2010 2757 Multichannel Deconvolution of Seismic Signals

    E-Print Network [OSTI]

    Cohen, Israel

    IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 58, NO. 5, MAY 2010 2757 Multichannel Deconvolution of Seismic Signals Using Statistical MCMC Methods Idan Ram, Israel Cohen, Senior Member, IEEE, and Shalom Raz of two-dimensional (2D) seismic data. Both algorithms are based on a 2D reflectivity prior model, and use

  10. Seismic Isolation Working Meeting Gap Analysis Report

    SciTech Connect (OSTI)

    Justin Coleman; Piyush Sabharwall

    2014-09-01

    The ultimate goal in nuclear facility and nuclear power plant operations is operating safety during normal operations and maintaining core cooling capabilities during off-normal events including external hazards. Understanding the impact external hazards, such as flooding and earthquakes, have on nuclear facilities and NPPs is critical to deciding how to manage these hazards to expectable levels of risk. From a seismic risk perspective the goal is to manage seismic risk. Seismic risk is determined by convolving the seismic hazard with seismic fragilities (capacity of systems, structures, and components (SSCs)). There are large uncertainties associated with evolving nature of the seismic hazard curves. Additionally there are requirements within DOE and potential requirements within NRC to reconsider updated seismic hazard curves every 10 years. Therefore opportunity exists for engineered solutions to manage this seismic uncertainty. One engineered solution is seismic isolation. Current seismic isolation (SI) designs (used in commercial industry) reduce horizontal earthquake loads and protect critical infrastructure from the potentially destructive effects of large earthquakes. The benefit of SI application in the nuclear industry is being recognized and SI systems have been proposed, in the American Society of Civil Engineers (ASCE) 4 standard, to be released in 2014, for Light Water Reactors (LWR) facilities using commercially available technology. However, there is a lack of industry application to the nuclear industry and uncertainty with implementing the procedures outlined in ASCE-4. Opportunity exists to determine barriers associated with implementation of current ASCE-4 standard language.

  11. Hanford quarterly seismic monitoring report 96C

    SciTech Connect (OSTI)

    Reidel, S.P.

    1996-09-24

    Seismic monitoring at the Hanford Site was established in 1969 by the United States Geological Survey (USGS) under a contract with the U.S. Atomic Energy Commission. In 1975 the University of Washington assumed responsibility for and expanded the network. In 1979 the Basalt Waste Isolation Program (BWIP) became responsible for collecting seismic data for the site as part of site characterization. Rockwell International Operations followed by Westinghouse Hanford Company (WHC), Geosciences Group, operated the local network and were the contract technical advisors for the Eastern Washington Regional Network operated by the University of Washington. Funding ended for BWIP in December 1988. Seismic Monitoring and the University of Washington contract was then transferred WHC`s Environmental Division. Seismic Monitoring is currently assigned to WHC`s Hanford Technical Services (HTS), part of the Environmental Division. The Seismic Monitoring Analysis and Repair Team (SMART) operates, maintains, and analyzes data from the Hanford Seismic Network (HSN), extending the site historical seismic database and fulfilling U.S. Department of Energy, Richland Operations Office requirements and orders. The Seismic Monitoring Analysis and Repair Team also maintains the Eastern Washington Regional Network (EWRN). The University of Washington uses the data from the EWRN and other seismic networks in the Northwest to provide the SMART with necessary regional input for the seismic hazards analysis at the Hanford Site.

  12. Seismic Volume Visualization for Horizon Extraction Daniel Patel

    E-Print Network [OSTI]

    present a novel system for rapidly interpret- ing and visualizing seismic volumetric data. First we to seismic data interpretation. Keywords: Seismic interpretation, Seismic horizons, Volume ren- dering hydrocarbons are trapped. In this paper we present a system for rapid interpretation of seismic reflection

  13. Seismic Tomography: Definitions Lapo Boschi (lapo@erdw.ethz.ch)

    E-Print Network [OSTI]

    Boschi, Lapo

    Seismic Tomography: Definitions Lapo Boschi (lapo@erdw.ethz.ch) September 14, 2009 Seismic Tomography Seismic tomography is the science of interpreting seismic measurements (seismograms) to derive information about the structure of the Earth. This course does not cover the techniques of seismic observation

  14. SEISMIC EVALUATION OF HYDROCARBON SATURATION IN DEEP-WATER RESERVOIRS

    SciTech Connect (OSTI)

    M. Batzle; D-h Han; R. Gibson; O. Djordjevic

    2003-03-20

    The ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' (Grant/Cooperative Agreement DE-FC26-02NT15342) began September 1, 2002. During this second quarter: A Direct Hydrocarbon Indicator (DHI) symposium was held at UH; Current DHI methods were presented and forecasts made on future techniques; Dr. Han moved his laboratory from HARC to the University of Houston; Subcontracts were re-initiated with UH and TAMU; Theoretical and numerical modeling work began at TAMU; Geophysical Development Corp. agreed to provide petrophysical data; Negotiations were begun with Veritas GDC to obtain limited seismic data; Software licensing and training schedules were arranged with Paradigm; and Data selection and acquisition continues. The broad industry symposium on Direct Hydrocarbon Indicators was held at the University of Houston as part of this project. This meeting was well attended and well received. A large amount of information was presented, not only on application of the current state of the art, but also on expected future trends. Although acquisition of appropriate seismic data was expected to be a significant problem, progress has been made. A 3-D seismic data set from the shelf has been installed at Texas A&M University and analysis begun. Veritas GDC has expressed a willingness to provide data in the deep Gulf of Mexico. Data may also be available from TGS.

  15. Annual Hanford Seismic Report for Fiscal Year 2009

    SciTech Connect (OSTI)

    Rohay, Alan C.; Sweeney, Mark D.; Hartshorn, Donald C.; Clayton, Ray E.; Devary, Joseph L.

    2009-12-31

    The Hanford Seismic Assessment Program (HSAP) provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network for the U.S. Department of Energy and its contractors. The HSAP is responsible for locating and identifying sources of seismic activity and monitoring changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by the Hanford Site for waste management, natural phenomena hazards assessments, and engineering design and construction. In addition, the HSAP works with the Hanford Site Emergency Services Organization to provide assistance in the event of a significant earthquake on the Hanford Site. The Hanford Seismic Network and the Eastern Washington Regional Network consist of 44 individual sensor sites and 15 radio relay sites maintained by the Hanford Seismic Assessment Team. During FY 2009, the Hanford Seismic Network recorded nearly 3000 triggers on the seismometer system, which included over 1700 seismic events in the southeast Washington area and an additional 370 regional and teleseismic events. There were 1648 events determined to be local earthquakes relevant to the Hanford Site. Nearly all of these earthquakes were detected in the vicinity of Wooded Island, located about eight miles north of Richland just west of the Columbia River. Recording of the Wooded Island events began in January with over 250 events per month through June 2009. The frequency of events decreased starting in July 2009 to approximately 10-15 events per month through September 2009. Most of the events were considered minor (coda-length magnitude [Mc] less than 1.0) with 47 events in the 2.0-3.0 range. The estimated depths of the Wooded Island events are shallow (averaging less than 1.0 km deep) with a maximum depth estimated at 2.3 km. This places the Wooded Island events within the Columbia River Basalt Group (CRBG). The highest-magnitude event (3.0Mc) occurred on May 13, 2009 within the Wooded Island swarm at depth 1.8 km. With regard to the depth distribution, 1613 earthquakes were located at shallow depths (less than 4 km, most likely in the Columbia River basalts), 18 earthquakes were located at intermediate depths (between 4 and 9 km, most likely in the pre-basalt sediments), and 17 earthquakes were located at depths greater than 9 km, within the crystalline basement. Geographically, 1630 earthquakes were located in swarm areas and 18 earthquakes were classified as random events. The low magnitude of the Wooded Island events has made them undetectable to all but local area residents. However, some Hanford employees working within a few miles of the area of highest activity and individuals living in homes directly across the Columbia River from the swarm center have reported feeling many of the larger magnitude events. The Hanford Strong Motion Accelerometer (SMA) network was triggered numerous times by the Wooded Island swarm events. The maximum acceleration value recorded by the SMA network was approximately 3 times lower than the reportable action level for Hanford facilities (2% g) and no action was required. The swarming is likely due to pressure that has built up, cracking the brittle basalt layers within the Columbia River Basalt Formation (CRBG). Similar earthquake swarms have been recorded near this same location in 1970, 1975 and 1988. Prior to the 1970s, swarming may have occurred, but equipment was not in place to record those events. Quakes of this limited magnitude do not pose a risk to Hanford cleanup efforts or waste storage facilities. Since swarms of the past did not intensify in magnitude, seismologists do not expect that these events will increase in intensity. However, Pacific Northwest National Laboratory (PNNL) will continue to monitor the activity.

  16. Annual Hanford Seismic Report for Fiscal Year 2010

    SciTech Connect (OSTI)

    Rohay, Alan C.; Clayton, Ray E.; Sweeney, Mark D.; Devary, Joseph L.; Hartshorn, Donald C.

    2010-12-27

    The Hanford Seismic Assessment Program (HSAP) provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network for the U.S. Department of Energy and its contractors. The HSAP is responsible for locating and identifying sources of seismic activity and monitoring changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by the Hanford Site for waste management, natural phenomena hazards assessments, and engineering design and construction. In addition, the HSAP works with the Hanford Site Emergency Services Organization to provide assistance in the event of a significant earthquake on the Hanford Site. The Hanford Seismic Network and the Eastern Washington Regional Network consist of 44 individual sensor sites and 15 radio relay sites maintained by the Hanford Seismic Assessment Team. During FY 2010, the Hanford Seismic Network recorded 873 triggers on the seismometer system, which included 259 seismic events in the southeast Washington area and an additional 324 regional and teleseismic events. There were 210 events determined to be local earthquakes relevant to the Hanford Site. One hundred and fifty-five earthquakes were detected in the vicinity of Wooded Island, located about eight miles north of Richland just west of the Columbia River. The Wooded Island events recorded this fiscal year were a continuation of the swarm events observed during fiscal year 2009 and reported in previous quarterly and annual reports (Rohay et al. 2009a, 2009b, 2009c, 2010a, 2010b, and 2010c). Most events were considered minor (coda-length magnitude [Mc] less than 1.0) with the largest event recorded on February 4, 2010 (3.0Mc). The estimated depths of the Wooded Island events are shallow (averaging approximately 1.5 km deep) placing the swarm within the Columbia River Basalt Group. Based upon the last two quarters (Q3 and Q4) data, activity at the Wooded Island area swarm has largely subsided. Pacific Northwest National Laboratory will continue to monitor for activity at this location. The highest-magnitude events (3.0Mc) were recorded on February 4, 2010 within the Wooded Island swarm (depth 2.4 km) and May 8, 2010 on or near the Saddle Mountain anticline (depth 3.0 km). This latter event is not considered unusual in that earthquakes have been previously recorded at this location, for example, in October 2006 (Rohay et al. 2007). With regard to the depth distribution, 173 earthquakes were located at shallow depths (less than 4 km, most likely in the Columbia River basalts), 18 earthquakes were located at intermediate depths (between 4 and 9 km, most likely in the pre-basalt sediments), and 19 earthquakes were located at depths greater than 9 km, within the crystalline basement. Geographically, 178 earthquakes were located in known swarm areas, 4 earthquakes occurred on or near a geologic structure (Saddle Mountain anticline), and 28 earthquakes were classified as random events. The Hanford Strong Motion Accelerometer (SMA) network was triggered several times by the Wooded Island swarm events and the events located on or near the Saddle Mountain anticline. The maximum acceleration value recorded by the SMA network during fiscal year 2010 occurred February 4, 2010 (Wooded Island swarm event), approximately 2 times lower than the reportable action level for Hanford facilities (2% g) with no action required.

  17. The Effectiveness of the Hybrid Graphical Representation Method in Visually Combining and Communicating Logical and Spatial Relationships between Scheduled Activities

    E-Print Network [OSTI]

    Nageeb, Meena

    2012-07-16

    This research endeavor investigated the possibility to combine the visual advantages of both graphical schedule visualization methods, the Linked Gantt Charts (LGC) and Flowline graphs (FLG), derived from the activity-based ...

  18. Method of synthesizing a plurality of reactants and producing thin films of electro-optically active transition metal oxides

    DOE Patents [OSTI]

    Tracy, C.E.; Benson, D.K.; Ruth, M.R.

    1985-08-16

    A method of synthesizing a plurality of reactants by inducing a reaction by plasma deposition among the reactants. The plasma reaction is effective for consolidating the reactants and producing thin films of electro-optically active transition metal oxides.

  19. Sample Preparation Methods and Pre-harvest Factors Influencing the Contents of Bioactive Compounds and Antioxidant Activity in Peppers

    E-Print Network [OSTI]

    Bae, Hae Jin

    2012-02-14

    Peppers are a rich source of diverse bioactive compounds with potential health-promoting properties. The levels of bioactive compounds and antioxidant activity can be affected by analytical methods, pre-harvest factors, ...

  20. The development of a selection criteria model for the type of seismic retrofitting scheme applicable to Philippine buildings

    E-Print Network [OSTI]

    Angeles, Kathryn Patricia V. (Kathryn Patricia Velayo)

    2008-01-01

    The Philippine Archipelago lies in a highly sensitive position in the Asian continent, named the Pacific "Ring of Fire" and it is one of the most seismically active and disaster prone areas in the world. In the Philippines, ...

  1. Nuclear component horizontal seismic restraint

    DOE Patents [OSTI]

    Snyder, Glenn J. (Lynchburg, VA)

    1988-01-01

    A nuclear component horizontal seismic restraint. Small gaps limit horizontal displacement of components during a seismic occurrence and therefore reduce dynamic loadings on the free lower end. The reactor vessel and reactor guard vessel use thicker section roll-forged rings welded between the vessel straight shell sections and the bottom hemispherical head sections. The inside of the reactor guard vessel ring forging contains local vertical dovetail slots and upper ledge pockets to mount and retain field fitted and installed blocks. As an option, the horizontal displacement of the reactor vessel core support cone can be limited by including shop fitted/installed local blocks in opposing alignment with the reactor vessel forged ring. Beams embedded in the wall of the reactor building protrude into apertures in the thermal insulation shell adjacent the reactor guard vessel ring and have motion limit blocks attached thereto to provide to a predetermined clearance between the blocks and reactor guard vessel ring.

  2. Tube-wave seismic imaging

    DOE Patents [OSTI]

    Korneev, Valeri A. (Lafayette, CA); Bakulin, Andrey (Houston, TX)

    2009-10-13

    The detailed analysis of cross well seismic data for a gas reservoir in Texas revealed two newly detected seismic wave effects, recorded approximately 2000 feet above the reservoir. A tube-wave (150) is initiated in a source well (110) by a source (111), travels in the source well (110), is coupled to a geological feature (140), propagates (151) through the geological feature (140), is coupled back to a tube-wave (152) at a receiver well (120), and is and received by receiver(s) (121) in either the same (110) or a different receiving well (120). The tube-wave has been shown to be extremely sensitive to changes in reservoir characteristics. Tube-waves appear to couple most effectively to reservoirs where the well casing is perforated, allowing direct fluid contact from the interior of a well case to the reservoir.

  3. Tube-wave seismic imaging

    DOE Patents [OSTI]

    Korneev, Valeri A [LaFayette, CA

    2009-05-05

    The detailed analysis of cross well seismic data for a gas reservoir in Texas revealed two newly detected seismic wave effects, recorded approximately 2000 feet above the reservoir. A tube-wave (150) is initiated in a source well (110) by a source (111), travels in the source well (110), is coupled to a geological feature (140), propagates (151) through the geological feature (140), is coupled back to a tube-wave (152) at a receiver well (120), and is and received by receiver(s) (121) in either the same (110) or a different receiving well (120). The tube-wave has been shown to be extremely sensitive to changes in reservoir characteristics. Tube-waves appear to couple most effectively to reservoirs where the well casing is perforated, allowing direct fluid contact from the interior of a well case to the reservoir.

  4. Analysis of seismic anisotropy in 3D multi-component seismic data

    E-Print Network [OSTI]

    Qian, Zhongping

    2010-01-01

    The importance of seismic anisotropy has been recognized by the oil industry since its first observation in hydrocarbon reservoirs in 1986, and the application of seismic anisotropy to solve geophysical problems has been ...

  5. Properties of Flares-Generated Seismic Waves on the Sun

    E-Print Network [OSTI]

    A. G. Kosovichev

    2005-12-31

    The solar seismic waves excited by solar flares (``sunquakes'') are observed as circular expanding waves on the Sun's surface. The first sunquake was observed for a flare of July 9, 1996, from the Solar and Heliospheric Observatory (SOHO) space mission. However, when the new solar cycle started in 1997, the observations of solar flares from SOHO did not show the seismic waves, similar to the 1996 event, even for large X-class flares during the solar maximum in 2000-2002. The first evidence of the seismic flare signal in this solar cycle was obtained for the 2003 ``Halloween'' events, through acoustic ``egression power'' by Donea and Lindsey. After these several other strong sunquakes have been observed. Here, I present a detailed analysis of the basic properties of the helioseismic waves generated by three solar flares in 2003-2005. For two of these flares, X17 flare of October 28, 2003, and X1.2 flare of January 15, 2005, the helioseismology observations are compared with simultaneous observations of flare X-ray fluxes measured from the RHESSI satellite. These observations show a close association between the flare seismic waves and the hard X-ray source, indicating that high-energy electrons accelerated during the flare impulsive phase produced strong compression waves in the photosphere, causing the sunquake. The results also reveal new physical properties such as strong anisotropy of the seismic waves, the amplitude of which varies significantly with the direction of propagation. The waves travel through surrounding sunspot regions to large distances, up to 120 Mm, without significant decay. These observations open new perspectives for helioseismic diagnostics of flaring active regions on the Sun and for understanding the mechanisms of the energy release and transport in solar flares.

  6. Seismicity Protocol | Department of Energy

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

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram: Report AppendicesAVideo » Search resultsEnergyPolicy,Seismicity

  7. Mapping Diffuse Seismicity Using Empirical Matched Field Processing Techniques

    SciTech Connect (OSTI)

    Wang, J; Templeton, D C; Harris, D B

    2011-01-21

    The objective of this project is to detect and locate more microearthquakes using the empirical matched field processing (MFP) method than can be detected using only conventional earthquake detection techniques. We propose that empirical MFP can complement existing catalogs and techniques. We test our method on continuous seismic data collected at the Salton Sea Geothermal Field during November 2009 and January 2010. In the Southern California Earthquake Data Center (SCEDC) earthquake catalog, 619 events were identified in our study area during this time frame and our MFP technique identified 1094 events. Therefore, we believe that the empirical MFP method combined with conventional methods significantly improves the network detection ability in an efficient matter.

  8. 3D Seismic Experimentation and Advanced Processing/Inversion Development for Investigations of the Shallow Subsurface

    SciTech Connect (OSTI)

    Levander, Alan Richard; Zelt, Colin A.

    2015-03-17

    The work plan for this project was to develop and apply advanced seismic reflection and wide-angle processing and inversion techniques to high resolution seismic data for the shallow subsurface to seismically characterize the shallow subsurface at hazardous waste sites as an aid to containment and cleanup activities. We proposed to continue work on seismic data that we had already acquired under a previous DoE grant, as well as to acquire additional new datasets for analysis. The project successfully developed and/or implemented the use of 3D reflection seismology algorithms, waveform tomography and finite-frequency tomography using compressional and shear waves for high resolution characterization of the shallow subsurface at two waste sites. These two sites have markedly different near-surface structures, groundwater flow patterns, and hazardous waste problems. This is documented in the list of refereed documents, conference proceedings, and Rice graduate theses, listed below.

  9. Method of increasing the rate of hydration of activated hydroxyethyl cellulose compositions

    SciTech Connect (OSTI)

    House, R.F.; Hoover, L.D.

    1987-08-11

    This patent describes a method of producing a well servicing fluid wherein a first solution containing zing bromide is mixed with at least one second solution having dissolved therein a salt selected from the group consisting of calcium chloride, calcium bromide, and mixtures thereof, the improvement which comprises the following steps in the order indicated: (a) admixing a hydroxyethyl cellulose composition with the second solution to produce a viscosified solution and (b) thereafter admixing the viscosified solution with the first solution containing zinc bromide and having a density of at least 17.0 ppg to give the desired well servicing fluid having a density in the range from about 14.2 ppg to about 18.0 ppg, the hydroxyethyl cellulose being activated prior to admixture so as to substantially hydrate or solubilize in the second solution at ambient temperatures.

  10. Decision analysis for seismic retrofit of structures

    E-Print Network [OSTI]

    Williams, Ryan J.

    2009-05-15

    as well as the seismic hazard at a specific building location is incorporated into the decision-making process. The prescribed methodology is used to study two identical reinforced concrete buildings, one located in Memphis, Tennessee and one in San... in the NMFZ compared to that in California as well as human bias in the decision-making process, a quantitative measure of the economic costs and benefits of seismic retrofitting that considers the probability of occurrence of seismic events is necessary...

  11. Time-lapse crosswell seismic and VSP monitoring of injected CO2 in a brine aquifer

    E-Print Network [OSTI]

    Daley, Thomas M.; Myer, Larry R.; Peterson, J.E.; Majer, E.L.; Hoversten, G.M.

    2006-01-01

    crosswell and vertical seismic profile (VSP), were acquiredof crosswell and vertical seismic profile (VSP) experiments.

  12. 230Th/U ages Supporting Hanford Site-Wide Probabilistic Seismic Hazard Analysis

    SciTech Connect (OSTI)

    Paces, James B. [U.S. Geological Survey] [U.S. Geological Survey

    2014-08-31

    This product represents a USGS Administrative Report that discusses samples and methods used to conduct uranium-series isotope analyses and resulting ages and initial 234U/238U activity ratios of pedogenic cements developed in several different surfaces in the Hanford area middle to late Pleistocene. Samples were collected and dated to provide calibration of soil development in surface deposits that are being used in the Hanford Site-Wide probabilistic seismic hazard analysis conducted by AMEC. The report includes description of sample locations and physical characteristics, sample preparation, chemical processing and mass spectrometry, analytical results, and calculated ages for individual sites. Ages of innermost rinds on a number of samples from five sites in eastern Washington are consistent with a range of minimum depositional ages from 17 ka for cataclysmic flood deposits to greater than 500 ka for alluvium at several sites.

  13. Seismic data acquisition at the FACT site for the CASPAR project.

    SciTech Connect (OSTI)

    Jones, Kyle R.; Chael, Eric Paul; Hart, Darren M.

    2012-01-01

    Since May 2010, we have been recording continuous seismic data at Sandia's FACT site. The collected signals provide us with a realistic archive for testing algorithms under development for local monitoring of explosive testing. Numerous small explosive tests are routinely conducted around Kirtland AFB by different organizations. Our goal is to identify effective methods for distinguishing these events from normal daily activity on and near the base, such as vehicles, aircraft, and storms. In this report, we describe the recording system, and present some observations of the varying ambient noise conditions at FACT. We present examples of various common, non-explosive, sources. Next we show signals from several small explosions, and discuss their characteristic features.

  14. May 2015 Seismic Lessons-Learned Panel Meeting Agenda | Department...

    Office of Environmental Management (EM)

    May 2015 Seismic Lessons-Learned Panel Meeting Agenda May 2015 Seismic Lessons-Learned Panel Meeting Agenda Agenda for the May 2015 Seismic Lessons-Learned Panel Meeting held at...

  15. Three-Dimensional Seismic Imaging of the Ryepatch Geothermal Reservoir

    E-Print Network [OSTI]

    Feighner, Mark A.

    2010-01-01

    stage used a Vertical Seismic Profile to determine the seis-2. Results From Vertical Seismic Profile (VSP) Figure 1P- and S-Wave vertical seismic profile data from the Salton

  16. Seismic signatures of two orthogonal sets of vertical microcorrugated fractures

    E-Print Network [OSTI]

    Tsvankin, Ilya

    surface seismic and VSP (vertical seismic profiling) data. Using the linear- slip theory describedSeismic signatures of two orthogonal sets of vertical microcorrugated fractures Rodrigo Fel propagation through an effective anisotropic medium that contains two microcorrugated, vertical, orthogonal

  17. A seismic signature of river bedload transport during storm events

    E-Print Network [OSTI]

    Hsu, Leslie; Finnegan, Noah J.; Brodsky, Emily E.

    2011-01-01

    2008), Spectral analysis of seismic noise induced by rivers:analysis of high?frequency seismic noise, J. Geophys. Res. ,and V. Manville (2009), Seismic sig- nals of snow?slurry

  18. S E R I E S SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES

    E-Print Network [OSTI]

    S E R I E S SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES COMMISSION Database: Architecture and implementation #12;SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN Conclusions #12;SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES 3 SERIES Concluding

  19. S E R I E S SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES

    E-Print Network [OSTI]

    S E R I E S SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES COMMISSION, In memory of Prof. Roy Severn #12;SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES Project Framework Experimental Campaign Outcome Outline #12;SEISMIC ENGINEERING RESEARCH

  20. S E R I E S SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES

    E-Print Network [OSTI]

    S E R I E S SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES COMMISSION platform for distributed hybrid testing #12;SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN? Celestina Overview Implementation Validation Next steps #12;SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES

  1. Estimating Seismic Demands for Performance-Based Engineering of Buildings

    E-Print Network [OSTI]

    Reyes, Juan Carlos

    2009-01-01

    C. B. [2006], Assessing Seismic Collapse Safety of ModernP. [1998], Probabilistic Seismic Demand Analysis, Ph.D.of Non-linear Static Seismic Analysis Procedures, FEMA-440,

  2. SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES ENISTAT: Experimental and

    E-Print Network [OSTI]

    SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES ENISTAT: Experimental-TA Project #12;SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES Partners (Users) METU Ragueneau SCHOECK (Germany): Steffen Scheer, Seref Diler #12;SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES

  3. S E R I E S SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES

    E-Print Network [OSTI]

    S E R I E S SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES COMMISSION and Civil Engineering Institute, Ljubljana, Slovenia #12;SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES Numerical Simulations #12;SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES Project

  4. Nonlinear seismic response analysis of steel-concrete composite frames

    E-Print Network [OSTI]

    Barbato, Michele

    2008-01-01

    frame model 10TN (Northridge seismic input) floor 1 floor 2frame model 10TC (Northridge seismic input) Slip (mm) floorframe models 06TC, 10TC and 14TC (Northridge seismic input)

  5. REGIONAL SEISMIC AMPLITUDE MODELING AND TOMOGRAPHY FOR EARTHQUAKE-EXPLOSION DISCRIMINATION

    SciTech Connect (OSTI)

    Walter, W R; Pasyanos, M E; Matzel, E; Gok, R; Sweeney, J; Ford, S R; Rodgers, A J

    2008-07-08

    We continue exploring methodologies to improve earthquake-explosion discrimination using regional amplitude ratios such as P/S in a variety of frequency bands. Empirically we demonstrate that such ratios separate explosions from earthquakes using closely located pairs of earthquakes and explosions recorded on common, publicly available stations at test sites around the world (e.g. Nevada, Novaya Zemlya, Semipalatinsk, Lop Nor, India, Pakistan, and North Korea). We are also examining if there is any relationship between the observed P/S and the point source variability revealed by longer period full waveform modeling (e. g. Ford et al 2008). For example, regional waveform modeling shows strong tectonic release from the May 1998 India test, in contrast with very little tectonic release in the October 2006 North Korea test, but the P/S discrimination behavior appears similar in both events using the limited regional data available. While regional amplitude ratios such as P/S can separate events in close proximity, it is also empirically well known that path effects can greatly distort observed amplitudes and make earthquakes appear very explosion-like. Previously we have shown that the MDAC (Magnitude Distance Amplitude Correction, Walter and Taylor, 2001) technique can account for simple 1-D attenuation and geometrical spreading corrections, as well as magnitude and site effects. However in some regions 1-D path corrections are a poor approximation and we need to develop 2-D path corrections. Here we demonstrate a new 2-D attenuation tomography technique using the MDAC earthquake source model applied to a set of events and stations in both the Middle East and the Yellow Sea Korean Peninsula regions. We believe this new 2-D MDAC tomography has the potential to greatly improve earthquake-explosion discrimination, particularly in tectonically complex regions such as the Middle East. Monitoring the world for potential nuclear explosions requires characterizing seismic events and discriminating between natural and man-made seismic events, such as earthquakes and mining activities, and nuclear weapons testing. We continue developing, testing, and refining size-, distance-, and location-based regional seismic amplitude corrections to facilitate the comparison of all events that are recorded at a particular seismic station. These corrections, calibrated for each station, reduce amplitude measurement scatter and improve discrimination performance. We test the methods on well-known (ground truth) datasets in the U.S. and then apply them to the uncalibrated stations in Eurasia, Africa, and other regions of interest to improve underground nuclear test monitoring capability.

  6. Seismic stimulation for enhanced oil recovery

    E-Print Network [OSTI]

    Pride, S.R.

    2008-01-01

    aims to enhance oil production by sending seismic wavesbe expected to enhance oil production. INTRODUCTION The hopethe reservoir can cause oil production to increase. Quite

  7. Seismic velocity estimation from time migration

    E-Print Network [OSTI]

    Cameron, Maria Kourkina

    2007-01-01

    v List of Tables Comparison of time migration and depthof seismic imaging: time migration and depth migration. TimeComparison of time migration and depth migration Adequate

  8. Opportunities for improving regulations governing the seismic...

    Office of Environmental Management (EM)

    State Selection of Structures, Systems, and Components ANS Standards to Support DOE NPH Design AN APPLICATION OF THE SSHAC LEVEL 3 PROCESS TO THE PROBABILISTIC SEISMIC HAZARD...

  9. Induced seismicity associated with enhanced geothermal system

    E-Print Network [OSTI]

    Majer, Ernest L.

    2006-01-01

    induced seismicity in geothermal systems. In: Proceedings ofThe deep EGS (Enhanced Geothermal System) project at Soultz-with enhanced geothermal systems. Geothermal Resources

  10. Finite element approximation of coupled seismic and ...

    E-Print Network [OSTI]

    zyserman

    seismic and electromagnetic waves in gas hydrate-bearing sediments ..... water and natural gas, mainly methane, which form under certain conditions of low...

  11. System and method of active vibration control for an electro-mechanically cooled device

    DOE Patents [OSTI]

    Lavietes, Anthony D. (Hayward, CA); Mauger, Joseph (Livermore, CA); Anderson, Eric H. (Mountain View, CA)

    2000-01-01

    A system and method of active vibration control of an electro-mechanically cooled device is disclosed. A cryogenic cooling system is located within an environment. The cooling system is characterized by a vibration transfer function, which requires vibration transfer function coefficients. A vibration controller generates the vibration transfer function coefficients in response to various triggering events. The environments may differ by mounting apparatus, by proximity to vibration generating devices, or by temperature. The triggering event may be powering on the cooling system, reaching an operating temperature, or a reset action. A counterbalance responds to a drive signal generated by the vibration controller, based on the vibration signal and the vibration transfer function, which adjusts vibrations. The method first places a cryogenic cooling system within a first environment and then generates a first set of vibration transfer function coefficients, for a vibration transfer function of the cooling system. Next, the cryogenic cooling system is placed within a second environment and a second set of vibration transfer function coefficients are generated. Then, a counterbalance is driven, based on the vibration transfer function, to reduce vibrations received by a vibration sensitive element.

  12. Charged particle detectors with active detector surface for partial energy deposition of the charged particles and related methods

    DOE Patents [OSTI]

    Gerts, David W; Bean, Robert S; Metcalf, Richard R

    2013-02-19

    A radiation detector is disclosed. The radiation detector comprises an active detector surface configured to generate charge carriers in response to charged particles associated with incident radiation. The active detector surface is further configured with a sufficient thickness for a partial energy deposition of the charged particles to occur and permit the charged particles to pass through the active detector surface. The radiation detector further comprises a plurality of voltage leads coupled to the active detector surface. The plurality of voltage leads is configured to couple to a voltage source to generate a voltage drop across the active detector surface and to separate the charge carriers into a plurality of electrons and holes for detection. The active detector surface may comprise one or more graphene layers. Timing data between active detector surfaces may be used to determine energy of the incident radiation. Other apparatuses and methods are disclosed herein.

  13. Colloid-based multiplexed method for screening plant biomass-degrading glycoside hydrolase activities in microbial communities

    SciTech Connect (OSTI)

    Reindl, W.; Deng, K.; Gladden, J.M.; Cheng, G.; Wong, A.; Singer, S.W.; Singh, S.; Lee, J.-C.; Yao, J.-S.; Hazen, T.C.; Singh, A.K; Simmons, B.A.; Adams, P.D.; Northen, T.R.

    2011-05-01

    The enzymatic hydrolysis of long-chain polysaccharides is a crucial step in the conversion of biomass to lignocellulosic biofuels. The identification and characterization of optimal glycoside hydrolases is dependent on enzyme activity assays, however existing methods are limited in terms of compatibility with a broad range of reaction conditions, sample complexity, and especially multiplexity. The method we present is a multiplexed approach based on Nanostructure-Initiator Mass Spectrometry (NIMS) that allowed studying several glycolytic activities in parallel under diverse assay conditions. Although the substrate analogs carried a highly hydrophobic perfluorinated tag, assays could be performed in aqueous solutions due colloid formation of the substrate molecules. We first validated our method by analyzing known {beta}-glucosidase and {beta}-xylosidase activities in single and parallel assay setups, followed by the identification and characterization of yet unknown glycoside hydrolase activities in microbial communities.

  14. Seismic Testing and Analytical Studies for the Development of New Seismic Force Resisting Systems for Metal Buildings /

    E-Print Network [OSTI]

    Smith, Matthew Douglas

    2013-01-01

    and Lee, G.C. (1991), Seismic Behavior of Gable Frame26 Figure 1.3. Seismic Performance Factors (BSSC331 Figure 7.6. Seismic Load Cases for Parametric

  15. 2.6 Seismic Applications (SEI) The Seismic research area continued analysis of data captured by the Middle America Seismic Experiment (MASE),

    E-Print Network [OSTI]

    Soatto, Stefano

    2.6 Seismic Applications (SEI) The Seismic research area continued analysis of data captured by the Middle America Seismic Experiment (MASE), analysis of the ongoing Peru Subduction Zone Experiment (PeruSZE), and successful testing of GeoNet, the Reftek ENSBox platform for both structural and seismic applications. MASE

  16. Seismic Loading for FAST: May 2011 - August 2011

    SciTech Connect (OSTI)

    Asareh, M. A.; Prowell, I.

    2012-08-01

    As more wind farms are constructed in seismically active regions, earthquake loading increases in prominence for design and analysis of wind turbines. Early investigation of seismic load tended to simplify the rotor and nacelle as a lumped mass on top of the turbine tower. This simplification allowed the use of techniques developed for conventional civil structures, such as buildings, to be easily applied to wind turbines. However, interest is shifting to more detailed models that consider loads for turbine components other than the tower. These improved models offer three key capabilities in consideration of base shaking for turbines: 1) The inclusion of aerodynamics and turbine control; 2) The ability to consider component loads other than just tower loads; and 3) An improved representation of turbine response in higher modes by reducing modeling simplifications. Both experimental and numerical investigations have shown that, especially for large modern turbines, it is important to consider interaction between earthquake input, aerodynamics, and operational loads. These investigations further show that consideration of higher mode activity may be necessary in the analysis of the seismic response of turbines. Since the FAST code is already capable of considering these factors, modifications were developed that allow simulation of base shaking. This approach allows consideration of this additional load source within a framework, the FAST code that is already familiar to many researchers and practitioners.

  17. DOE New Madrid Seismic Zone Electric Utility Workshop Summary...

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

    DOE New Madrid Seismic Zone Electric Utility Workshop Summary Report - August 2010 DOE New Madrid Seismic Zone Electric Utility Workshop Summary Report - August 2010 The DOE New...

  18. Effects of Seismic Motion Incoherency on SSI and SSSI Responses...

    Office of Environmental Management (EM)

    Effects of Seismic Motion Incoherency on SSI and SSSI Responses of Nuclear Structures for Different Soil Site Conditions Effects of Seismic Motion Incoherency on SSI and SSSI...

  19. An Asymptotic Model of Seismic Reflection from a Permeable Layer

    E-Print Network [OSTI]

    Silin, Dmitriy; Goloshubin, Gennady

    2010-01-01

    Hilterman, F.J. : Seismic Amplitude Interpretation. Number 4interpretations of some poroelasticity coef?cients. For instance, we demonstrate that the An Asymptotic Model of Seismic

  20. Characteristics of seismic waves from Soviet peaceful nuclear...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Characteristics of seismic waves from Soviet peaceful nuclear explosions in salt Citation Details In-Document Search Title: Characteristics of seismic waves from...

  1. Application of Random Vibration Theory Methodology for Seismic...

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

    Random Vibration Theory Methodology for Seismic Soil-Structure Interaction Analysis Application of Random Vibration Theory Methodology for Seismic Soil-Structure Interaction...

  2. Joint inversion of electrical and seismic data for Fracture char...

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

    Joint inversion of electrical and seismic data for Fracture char. and Imaging of Fluid Flow in Geothermal Systems Joint inversion of electrical and seismic data for Fracture char....

  3. Los Alamos National Laboratory Plutonium Facility (PF-4) Seismic...

    Office of Environmental Management (EM)

    Laboratory Plutonium Facility (PF-4) Seismic Safety Los Alamos National Laboratory Plutonium Facility (PF-4) Seismic Safety Los Alamos National Laboratory Plutonium Facility (PF-4)...

  4. The INL Seismic Risk Assessment Project: Requirements for Addressing...

    Office of Environmental Management (EM)

    The INL Seismic Risk Assessment Project: Requirements for Addressing DOE Order 420.1C & A Proposed Generic Methodology The INL Seismic Risk Assessment Project: Requirements for...

  5. Seismic Technology Adapted to Analyzing and Developing Geothermal...

    Open Energy Info (EERE)

    information. The research will use new seismic sources that emphasize shear waves and new seismic data-acquisition technology based on cable-free data recording to acquire...

  6. Protocol for Addressing Induced Seismicity Associated with Enhanced...

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

    Protocol for Addressing Induced Seismicity Associated with Enhanced Geothermal Systems (EGS) Protocol for Addressing Induced Seismicity Associated with Enhanced Geothermal Systems...

  7. Protocol for Addressing Induced Seismicity Associated with Enhanced...

    Energy Savers [EERE]

    Protocol for Addressing Induced Seismicity Associated with Enhanced Geothermal Systems Protocol for Addressing Induced Seismicity Associated with Enhanced Geothermal Systems This...

  8. Advanced Seismic data Analysis Program (The "Hot Pot Project...

    Open Energy Info (EERE)

    Advanced Seismic data Analysis Program (The "Hot Pot Project") Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Advanced Seismic data...

  9. Seismic Velocity And Attenuation Structure Of The Geysers Geothermal...

    Open Energy Info (EERE)

    Seismic Velocity And Attenuation Structure Of The Geysers Geothermal Field, California Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Seismic...

  10. Seismic baseline and induction studies- Roosevelt Hot Springs...

    Open Energy Info (EERE)

    Seismic baseline and induction studies- Roosevelt Hot Springs, Utah and Raft River, Idaho Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Seismic...

  11. Seismic Reflection Data and Conceptual Models for Geothermal...

    Open Energy Info (EERE)

    Seismic Reflection Data and Conceptual Models for Geothermal Development in Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Seismic...

  12. Development of Simplified Probabilistic Risk Assessment Model for Seismic Initiating Event

    SciTech Connect (OSTI)

    S. Khericha; R. Buell; S. Sancaktar; M. Gonzalez; F. Ferrante

    2012-06-01

    ABSTRACT This paper discusses a simplified method to evaluate seismic risk using a methodology built on dividing the seismic intensity spectrum into multiple discrete bins. The seismic probabilistic risk assessment model uses Nuclear Regulatory Commissions (NRCs) full power Standardized Plant Analysis Risk (SPAR) model as the starting point for development. The seismic PRA models are integrated with their respective internal events at-power SPAR model. This is accomplished by combining the modified system fault trees from the full power SPAR model with seismic event tree logic. The peak ground acceleration is divided into five bins. The g-value for each bin is estimated using the geometric mean of lower and upper values of that particular bin and the associated frequency for each bin is estimated by taking the difference between upper and lower values of that bin. The components fragilities are calculated for each bin using the plant data, if available, or generic values of median peak ground acceleration and uncertainty values for the components. For human reliability analysis (HRA), the SPAR HRA (SPAR-H) method is used which requires the analysts to complete relatively straight forward worksheets that include the performance shaping factors (PSFs). The results are then used to estimate human error probabilities (HEPs) of interest. This work is expected to improve the NRCs ability to include seismic hazards in risk assessments for operational events in support of the reactor oversight program (e.g., significance determination process).

  13. Exploration 3-D Seismic Field Test/Native Tribes Initiative

    SciTech Connect (OSTI)

    Carroll, Herbert B.; Chen, K.C.; Guo, Genliang; Johnson, W.I.; Reeves,T.K.; Sharma,Bijon

    1999-04-27

    To determine current acquisition procedures and costs and to further the goals of the President's Initiative for Native Tribes, a seismic-survey project is to be conducted on Osage tribal lands. The goals of the program are to demonstrate the capabilities, costs, and effectiveness of 3-D seismic work in a small-operator setting and to determine the economics of such a survey. For these purposes, typical small-scale independent-operator practices are being followed and a shallow target chose in an area with a high concentration of independent operators. The results will be analyzed in detail to determine if there are improvements and/or innovations which can be easily introduced in field-acquisition procedures, in processing, or in data manipulation and interpretation to further reduce operating costs and to make the system still more active to the small-scale operator.

  14. Second Quarter Hanford Seismic Report for Fiscal Year 2009

    SciTech Connect (OSTI)

    Rohay, Alan C.; Sweeney, Mark D.; Hartshorn, Donald C.; Clayton, Ray E.; Devary, Joseph L.

    2009-07-31

    The Hanford Seismic Assessment Program (HSAP) provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network for the U.S. Department of Energy and its contractors. The HSAP is responsible for locating and identifying sources of seismic activity and monitoring changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by the Hanford Site for waste management, natural phenomena hazards assessments, and engineering design and construction. In addition, the HSAP works with the Hanford Site Emergency Services Organization to provide assistance in the event of a significant earthquake on the Hanford Site. The Hanford Seismic Network and the Eastern Washington Regional Network consist of 44 individual sensor sites and 15 radio relay sites maintained by the Hanford Seismic Assessment Team. The Hanford Seismic Network recorded over 800 local earthquakes during the second quarter of FY 2009. Nearly all of these earthquakes were detected in the vicinity of Wooded Island, located about eight miles north of Richland just west of the Columbia River. Most of the events were considered minor (magnitude (Mc) less than 1.0) with 19 events in the 2.0-2.9 range. The estimated depths of the Wooded Island events are shallow (averaging less than 1.0 km deep) with a maximum depth estimated at 1.9 km. This places the Wooded Island events within the Columbia River Basalt Group (CRBG). The low magnitude and the shallowness of the Wooded Island events have made them undetectable to most area residents. However, some Hanford employees working within a few miles of the area of highest activity, and individuals living in homes directly across the Columbia River from the swarm center, have reported feeling some movement. The Hanford SMA network was triggered numerous times by the Wooded Island swarm events. The maximum acceleration values recorded by the SMA network were approximately 2-3 times lower than the reportable action level for Hanford facilities (2% g) and no action was required. The swarming is likely due to pressures that have built up, cracking the brittle basalt layers within the Columbia River Basalt Formation (CRBG). Similar earthquake swarms have been recorded near this same location in 1970, 1975 and 1988. Prior to the 1970s, swarming may have occurred, but equipment was not in place to record those events. Quakes of this limited magnitude do not pose a risk to Hanford cleanup efforts or waste storage facilities. Since swarms of the past did not intensify in magnitude, seismologists do not expect that these events will increase in intensity. However, PNNL will continue to monitor the activity continuously. Outside of the Wooded Island swarm, four earthquakes were recorded. Three earthquakes were classified as minor and one event registered 2.3 Mc. One earthquake was located at intermediate depth (between 4 and 9 km, most likely in the pre-basalt sediments) and three earthquakes at depths greater than 9 km, within the basement. Geographically, two earthquakes were located in known swarm areas and two earthquakes were classified as random events.

  15. Third Quarter Hanford Seismic Report for Fiscal Year 2009

    SciTech Connect (OSTI)

    Rohay, Alan C.; Sweeney, Mark D.; Hartshorn, Donald C.; Clayton, Ray E.; Devary, Joseph L.

    2009-09-30

    The Hanford Seismic Assessment Program (HSAP) provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network for the U.S. Department of Energy and its contractors. The HSAP is responsible for locating and identifying sources of seismic activity and monitoring changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by the Hanford Site for waste management, natural phenomena hazards assessments, and engineering design and construction. In addition, the HSAP works with the Hanford Site Emergency Services Organization to provide assistance in the event of a significant earthquake on the Hanford Site. The Hanford Seismic Network and the Eastern Washington Regional Network consist of 44 individual sensor sites and 15 radio relay sites maintained by the Hanford Seismic Assessment Team. The Hanford Seismic Network recorded 771 local earthquakes during the third quarter of FY 2009. Nearly all of these earthquakes were detected in the vicinity of Wooded Island, located about eight miles north of Richland just west of the Columbia River. The Wooded Island events recorded this quarter is a continuation of the swarm events observed during the January March 2009 time period and reported in the previous quarterly report (Rohay et al, 2009). The frequency of Wooded Island events has subsided with 16 events recorded during June 2009. Most of the events were considered minor (magnitude (Mc) less than 1.0) with 25 events in the 2.0-3.0 range. The estimated depths of the Wooded Island events are shallow (averaging less than 1.0 km deep) with a maximum depth estimated at 2.2 km. This places the Wooded Island events within the Columbia River Basalt Group (CRBG). The low magnitude of the Wooded Island events has made them undetectable to all but local area residents. However, some Hanford employees working within a few miles of the area of highest activity and individuals living in homes directly across the Columbia River from the swarm center have reported feeling many of the larger magnitude events. The Hanford Strong Motion Accelerometer (SMA) network was triggered numerous times by the Wooded Island swarm events. The maximum acceleration value recorded by the SMA network was approximately 3 times lower than the reportable action level for Hanford facilities (2% g) and no action was required. The swarming is likely due to pressure that has built up, cracking the brittle basalt layers within the Columbia River Basalt Formation (CRBG). Similar earthquake swarms have been recorded near this same location in 1970, 1975 and 1988. Prior to the 1970s, swarming may have occurred, but equipment was not in place to record those events. Quakes of this limited magnitude do not pose a risk to Hanford cleanup efforts or waste storage facilities. Since swarms of the past did not intensify in magnitude, seismologists do not expect that these events will increase in intensity. However, Pacific Northwest National Laboratory (PNNL) will continue to monitor the activity.

  16. SEISMIC AND ROCK PHYSICS DIAGNOSTICS OF MULTISCALE RESERVOIR TEXTURES

    SciTech Connect (OSTI)

    Gary Mavko

    2003-10-01

    As part of our study on ''Relationships between seismic properties and rock microstructure'', we have (1) Studied relationships between velocity and permeability. (2) Used independent experimental methods to measure the elastic moduli of clay minerals as functions of pressure and saturation. (3) Applied different statistical methods for characterizing heterogeneity and textures from scanning acoustic microscope (SAM) images of shale microstructures. (4) Analyzed the directional dependence of velocity and attenuation in different reservoir rocks (5) Compared Vp measured under hydrostatic and non-hydrostatic stress conditions in sands. (6) Studied stratification as a source of intrinsic anisotropy in sediments using Vp and statistical methods for characterizing textures in sands.

  17. Seismic Protection of Bridge Structures Using Shape Memory Alloy-Based Isolation Systems against Near-Field Earthquakes

    E-Print Network [OSTI]

    Ozbulut, Osman Eser

    2012-02-14

    The damaging effects of strong ground motions on highway bridges have revealed the limitations of conventional design methods and emphasized the need for innovative design concepts. Although seismic isolation systems have ...

  18. The integration of seismic anisotropy and reservoir performance data for characterization of naturally fractured reservoirs using discrete feature network models

    E-Print Network [OSTI]

    Will, Robert A.

    2004-09-30

    This dissertation presents the development of a method for quantitative integration of seismic (elastic) anisotropy attributes with reservoir performance data as an aid in characterization of systems of natural fractures ...

  19. Seismic imaging of the shallow subsurface with high frequency seismic measurements

    SciTech Connect (OSTI)

    Kaelin, B [Univ. of California, Berkeley, CA (United States). Dept. of Geology and Geophysics

    1998-07-01

    Elastic wave propagation in highly heterogeneous media is investigated and theoretical calculations and field measurements are presented. In the first part the dynamic composite elastic medium (DYCEM) theory is derived for one-dimensional stratified media. A self-consistent method using the scattering functions of the individual layers is formulated, which allows the calculation of phase velocity, attenuation and waveform. In the second part the DYCEM theory has been generalized for three-dimensional inclusions. The specific case of spherical inclusions is calculated with the exact scattering functions and compared with several low frequency approximations. In the third part log and VSP data of partially water saturated tuffs in the Yucca Mountain region of Nevada are analyzed. The anomalous slow seismic velocities can be explained by combining self-consistent theories for pores and cracks. The fourth part analyzes an air injection experiment in a shallow fractured limestone, which has shown large effects on the amplitude, but small effects on the travel time of the transmitted seismic waves. The large amplitude decrease during the experiment is mainly due to the impedance contrast between the small velocities of gas-water mixtures inside the fracture and the formation. The slow velocities inside the fracture allow an estimation of aperture and gas concentration profiles.

  20. Introduction Seismic inversion techniques provide us with

    E-Print Network [OSTI]

    Taylor, Mark A J

    Introduction Seismic inversion techniques provide us with information about the wave velocity stratigraphy requires a knowledge of the physical properties, such as the bulk and shear moduli, and the microstructure of media through which the waves travel. Understanding how seismic velocities depend

  1. Image structure analysis for seismic interpretation Proefschrift

    E-Print Network [OSTI]

    van Vliet, Lucas J.

    Image structure analysis for seismic interpretation Proefschrift ter verkrijging van de graad van . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Traditional interpretation of 3-D seismic data . . . . . . . . . . . . . . . . 2 1.2 Improving the efficiency of the interpretation process . . . . . . . . . . . . 4 1.2.1 Structure enhancement for horizon

  2. SEISMIC ATTENUATION FOR RESERVOIR CHARACTERIZATION

    SciTech Connect (OSTI)

    Joel Walls; M.T. Taner; Naum Derzhi; Gary Mavko; Jack Dvorkin

    2003-04-01

    In this report we will show some new Q related seismic attributes on the Burlington-Seitel data set. One example will be called Energy Absorption Attribute (EAA) and is based on a spectral analysis. The EAA algorithm is designed to detect a sudden increase in the rate of exponential decay in the relatively higher frequency portion of the spectrum. In addition we will show results from a hybrid attribute that combines attenuation with relative acoustic impedance to give a better indication of commercial gas saturation.

  3. Newberry EGS Seismic Velocity Model

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

    Templeton, Dennise

    We use ambient noise correlation (ANC) to create a detailed image of the subsurface seismic velocity at the Newberry EGS site down to 5 km. We collected continuous data for the 22 stations in the Newberry network, together with 12 additional stations from the nearby CC, UO and UW networks. The data were instrument corrected, whitened and converted to single bit traces before cross correlation according to the methodology in Benson (2007). There are 231 unique paths connecting the 22 stations of the Newberry network. The additional networks extended that to 402 unique paths crossing beneath the Newberry site.

  4. Seismic response of linear accelerators

    E-Print Network [OSTI]

    Collette, C; Guinchard, M; Hauviller, C

    2010-01-01

    This paper is divided into two parts. The first part presents recent measurements of ground motion in the LHC tunnel at CERN. From these measurements, an update of the ground motion model currently used in accelerator simulations is presented. It contains new features like a model of the lateral motion and the technical noise. In the second part, it is shown how this model can be used to evaluate the seismic response of a linear accelerator in the frequency domain. Then, the approach is validated numerically on a regular lattice, taking the dynamic behavior of the machine alignment stage and the mechanical stabilization of the quadrupoles into account.

  5. Newberry EGS Seismic Velocity Model

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

    Templeton, Dennise

    2013-10-01

    We use ambient noise correlation (ANC) to create a detailed image of the subsurface seismic velocity at the Newberry EGS site down to 5 km. We collected continuous data for the 22 stations in the Newberry network, together with 12 additional stations from the nearby CC, UO and UW networks. The data were instrument corrected, whitened and converted to single bit traces before cross correlation according to the methodology in Benson (2007). There are 231 unique paths connecting the 22 stations of the Newberry network. The additional networks extended that to 402 unique paths crossing beneath the Newberry site.

  6. Second Quarter Hanford Seismic Report for Fiscal Year 2010

    SciTech Connect (OSTI)

    Rohay, Alan C.; Sweeney, Mark D.; Hartshorn, Donald C.; Clayton, Ray E.; Devary, Joseph L.

    2010-06-30

    The Hanford Seismic Assessment Program (HSAP) provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network for the U.S. Department of Energy and its contractors. The HSAP is responsible for locating and identifying sources of seismic activity and monitoring changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by the Hanford Site for waste management, natural phenomena hazards assessments, and engineering design and construction. In addition, the HSAP works with the Hanford Site Emergency Services Organization to provide assistance in the event of a significant earthquake on the Hanford Site. The Hanford Seismic Network and the Eastern Washington Regional Network consist of 44 individual sensor sites and 15 radio relay sites maintained by the Hanford Seismic Assessment Team. The Hanford Seismic Network recorded 90 local earthquakes during the second quarter of FY 2010. Eighty-one of these earthquakes were detected in the vicinity of Wooded Island, located about eight miles north of Richland just west of the Columbia River. The Wooded Island events recorded this quarter were a continuation of the swarm events observed during the 2009 and 2010 fiscal years and reported in previous quarterly and annual reports (Rohay et al; 2009a, 2009b, 2009c, and 2010). Most of the events were considered minor (coda-length magnitude [Mc] less than 1.0) with only 1 event in the 2.0-3.0 range; the maximum magnitude event (3.0 Mc) occurred February 4, 2010 at depth 2.4 km. The average depth of the Wooded Island events during the quarter was 1.6 km with a maximum depth estimated at 3.5 km. This placed the Wooded Island events within the Columbia River Basalt Group (CRBG). The low magnitude of the Wooded Island events has made them undetectable to all but local area residents. The Hanford Strong Motion Accelerometer (SMA) network was triggered several times by these events and the SMA recordings are discussed in section 6.0. During the last year some Hanford employees working within a few miles of the swarm area and individuals living directly across the Columbia River from the swarm center have reported feeling many of the larger magnitude events. Similar earthquake swarms have been recorded near this same location in 1970, 1975 and 1988 but not with SMA readings or satellite imagery. Prior to the 1970s, earthquake swarms may have occurred at this location or elsewhere in the Columbia Basin, but equipment was not in place to record those events. The Wooded Island swarm, due its location and the limited magnitude of the events, does not appear to pose any significant risk to Hanford waste storage facilities. Since swarms of the past did not intensify in magnitude, seismologists do not expect that these events will persist or increase in intensity. However, Pacific Northwest National Laboratory (PNNL) will continue to monitor the activity. Outside of the Wooded Island swarm, nine earthquakes were recorded, seven minor events plus two events with magnitude less than 2.0 Mc. Two earthquakes were located at shallow depths (less than 4 km), three earthquakes at intermediate depths (between 4 and 9 km), most likely in the pre-basalt sediments, and four earthquakes were located at depths greater than 9 km, within the basement. Geographically, six earthquakes were located in known swarm areas and three earthquakes were classified as random events.

  7. {sup 3}He+{sup 4}He astrophysical factor study using activation method

    SciTech Connect (OSTI)

    Bordeanu, C.

    2012-10-20

    In 1998, [2] pointed out the big difference for the S{sub 34}(0) ('old' experimental data) when experimental results were grouped starting from the main two methods: S{sub 34}(0) = 0.507(16)keVb for the direct capture and S{sub 34}(0) = 0.572(26)keVb for the activation. Its importance for the Standard Solar Model was the reason to ask for new measurements to understand the discrepancy. 'New' results solved this issue by equalizing the above values, but introduced a new situation to clarify: a discrepancy between the S{sub 34}(E) variations for 'old' and 'new' data at higher energies than E{sub CM} 1.0MeV. 'Old' theoretical models, used for extrapolating the S{sub 34}(E) to the stellar energies, couldn't explain this new behavior. New experimental data was required, again, by theorists. We started this project with the main goal to clarify the situation. Here are the results.

  8. UNCORRECTEDPROOF 2 A method to evaluate the level of solar activity at

    E-Print Network [OSTI]

    - 21 term prediction of solar activity because of its 22 great significance in applications (Wang et al been proposed to predict the level of solar activity 41 (e.g., see Li et al., 2001; Kane, 2001; Sello, 2001; 42 Hathaway, 1999). 43 Prediction of the long-term behavior of solar 44 activity is one

  9. REVIEW OF PRACTICE FOR DEEPLY EMBEDDED/BURIED NPP STRUCTURES SUBJECT TO SEISMIC LOADINGS.

    SciTech Connect (OSTI)

    XU,J.HOFMAYER,C.MILLER,C.GRAVES,H.

    2004-03-24

    Motivated by many design considerations, several conceptual designs for advanced reactors have proposed that the entire reactor building and a significant portion of the steam generator building will be either partially or completely embedded below grade. For the analysis of seismic events, the soil-structure interaction (SSI) effect and passive earth pressure for these types of deeply embedded structures will have a significant influence on the predicted seismic response. Sponsored by the US Nuclear Regulatory Commission (NRC), Brookhaven National Laboratory (BNL) is carrying out a research program to assess the significance of these proposed design features for advanced reactors, and to evaluate the existing analytical methods to determine their applicability and adequacy in capturing the seismic behavior of the proposed designs. This paper summarizes a literature review performed by BNL to determine the state of knowledge and practice for seismic analyses of deeply embedded and/or buried (DEB) nuclear containment type structures. Included in the paper is BNL's review of the open literature of existing standards, tests, and practices that have been used in the design and analysis of DEB structures. The paper also provides BNL's evaluation of available codes and guidelines with respect to seismic design practice of DEB structures. Based on BNL's review, a discussion is provided to highlight the applicability of the existing technologies for seismic analyses of DEB structures and to identify gaps that may exist in knowledge and potential issues that may require better understanding and further research.

  10. Integrated seismic study of naturally fractured tight gas reservoirs. Final report, September 1991--January 1995

    SciTech Connect (OSTI)

    Mavko, G.; Nur, A.

    1995-01-01

    The approach in this project has been to integrate the principles of rock physics into a quantitative processing and interpretation scheme that exploits, where possible, the broader spectrum of fracture zone signatures: (1) anomalous compressional and shear wave velocity; (2) Q and velocity dispersion; (3) increased velocity anisotropy; (4) amplitude vs. offset (AVO) response, and (5) variations in frequency content. As part of this the authors have attempted to refine some of the theoretical rock physics tools that should be applied in any field study to link the observed seismic signatures to the physical/geologic description of the fractured rock. The project had 3 key elements: (1) rock physics studies of the anisotropic viscoelastic signatures of fractured rocks, (2) acquisition and processing of seismic reflection field data, and (3) interpretation of seismic and well log data. The study site is in a producing field operated by Amoco and Arco at the southern boundary of the Powder River basin in Wyoming. During the winter of 1992--1993 the authors collected about 50 km of 9-component reflection seismic data and obtained existing log data from several wells in the vicinity. The paper gives background information on laboratory studies, seismic field studies of fracture anisotropy, and the problem of upscaling from the laboratory to the field. It discusses fluid effects on seismic anisotropy and a method for predicting stress-induced seismic anisotropy. Then results from the field experiment are presented and discussed: regional geologic framework and site description; seismic data acquisition; shear wave data and validation; and P-wave data analysis. 106 refs., 52 figs.

  11. Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs

    SciTech Connect (OSTI)

    Michael Batzle

    2006-04-30

    During this last period of the ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' project (Grant/Cooperative Agreement DE-FC26-02NT15342), we finalized integration of rock physics, well log analysis, seismic processing, and forward modeling techniques. Most of the last quarter was spent combining the results from the principal investigators and come to some final conclusions about the project. Also much of the effort was directed towards technology transfer through the Direct Hydrocarbon Indicators mini-symposium at UH and through publications. As a result we have: (1) Tested a new method to directly invert reservoir properties, water saturation, Sw, and porosity from seismic AVO attributes; (2) Constrained the seismic response based on fluid and rock property correlations; (3) Reprocessed seismic data from Ursa field; (4) Compared thin layer property distributions and averaging on AVO response; (5) Related pressures and sorting effects on porosity and their influence on DHI's; (6) Examined and compared gas saturation effects for deep and shallow reservoirs; (7) Performed forward modeling using geobodies from deepwater outcrops; (8) Documented velocities for deepwater sediments; (9) Continued incorporating outcrop descriptive models in seismic forward models; (10) Held an open DHI symposium to present the final results of the project; (11) Relations between Sw, porosity, and AVO attributes; (12) Models of Complex, Layered Reservoirs; and (14) Technology transfer Several factors can contribute to limit our ability to extract accurate hydrocarbon saturations in deep water environments. Rock and fluid properties are one factor, since, for example, hydrocarbon properties will be considerably different with great depths (high pressure) when compared to shallow properties. Significant over pressure, on the other hand will make the rocks behave as if they were shallower. In addition to the physical properties, the scale and tuning will alter our hydrocarbon indicators. Gas saturated reservoirs change reflection amplitudes significantly. The goal for the final project period was to systematically combine and document these various effects for use in deep water exploration and transfer this knowledge as clearly and effectively as possible.

  12. Fault properties from seismic Q M. H. Worthington1

    E-Print Network [OSTI]

    Cambridge, University of

    . Key words: attenuation, exploration seismology, fault models, Q, seismic wave propagation. I N T R O DFault properties from seismic Q M. H. Worthington1 and J. A. Hudson2 1 T. H. Huxley School of seismic Q from a North Sea vertical seismic proling data set has revealed an abrupt increase

  13. On Seismic Imaging: Geodesics, Isochrons, and Fermat's Principle

    E-Print Network [OSTI]

    Bohun, C. Sean

    and sponsoring The Geomechanics Project at The University of Calgary. Seismic data is used to obtain

  14. Interactive Seismic Interpretation with Piecewise Global Energy Minimization

    E-Print Network [OSTI]

    Interactive Seismic Interpretation with Piecewise Global Energy Minimization Thomas Hollt King and horizons. However, seismic interpretation and horizon tracing is a difficult and error-prone task, often starts with creating a model of the subsurface structures, the seismic interpretation. A seismic

  15. Seismic Fragility Analysis and Loss Estimation for Concrete Structures

    E-Print Network [OSTI]

    Bai, Jong Wha

    2012-02-14

    seismic vulnerability of concrete structures and effective in quantifying the uncertainties in the loss estimation process....

  16. SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES Qualification

    E-Print Network [OSTI]

    SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES Qualification of Seismic Research Facilities in Europe Maurizio Zola (P&P LMC - Bergamo) Fabio Taucer (JRC Ispra) #12;SEISMIC The qualification of the RTD facilities Standardization of the qualification of the RTD Facilities #12;SEISMIC

  17. SERIES workshopSERIES workshop Role of research infrastructures in seismic rehabilitationRole of research infrastructures in seismic rehabilitationRole of research infrastructures in seismic rehabilitationRole of research infrastructures in seismic rehabi

    E-Print Network [OSTI]

    SERIES workshopSERIES workshop Role of research infrastructures in seismic rehabilitationRole of research infrastructures in seismic rehabilitationRole of research infrastructures in seismic rehabilitationRole of research infrastructures in seismic rehabilitation Istanbul, 8Istanbul, 8--9 February 20129

  18. LUNAR SEISMIC PROFILING EXPERIMENT HOUSING AND CHARGE ASSEMBLY

    E-Print Network [OSTI]

    Rathbun, Julie A.

    ATM-1094f LUNAR SEISMIC PROFILING EXPERIMENT HOUSING AND CHARGE ASSEMBLY FOAM TEST REPORT PAGE DATE. R. Lewis, Manager Lunar Seismic Profiling Experiment #12;ATM-1094 I LUNAR SEISMIC PROFILING'MNAR SEISMIC PROFILING EXPERIMENT HOUSING AND CHARGE ASSEMBLY FOAM TEST REPORT .C"l. j_ ..LV~ .L v 7"'% I PAGE

  19. Seismic response of fractures and induced anisotropy in poroelastic media

    E-Print Network [OSTI]

    Santos, Juan

    Seismic response of fractures and induced anisotropy in poroelastic media Juan E. Santos Instituto) and R. Martinez Corredor (UNLP) Department of Mathematics, University of Calgary, October 2014 Seismic and angular variations of velocity and attenuation of seismic waves. Seismic response of fractures and induced

  20. Seismic response of fractures and induced anisotropy in poroelastic media

    E-Print Network [OSTI]

    Santos, Juan

    Seismic response of fractures and induced anisotropy in poroelastic media Juan E. Santos stituto) and R. Martinez Corredor (UNLP) Department of Mathematics, University of Calgary, October 2014 Seismic variations of velocity and attenuation of seismic waves. Seismic response of fractures and induced anisotropy

  1. Towards the Understanding of Induced Seismicity in Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Gritto, Roland; Dreger, Douglas; Heidbach, Oliver

    2014-08-29

    This DOE funded project was a collaborative effort between Array Information Technology (AIT), the University of California at Berkeley (UCB), the Helmholtz Centre Potsdam - German Research Center for Geosciences (GFZ) and the Lawrence Berkeley National Laboratory (LBNL). It was also part of the European research project GEISER, an international collaboration with 11 European partners from six countries including universities, research centers and industry, with the goal to address and mitigate the problems associated with induced seismicity in Enhanced Geothermal Systems (EGS). The goal of the current project was to develop a combination of techniques, which evaluate the relationship between enhanced geothermal operations and the induced stress changes and associated earthquakes throughout the reservoir and the surrounding country rock. The project addressed the following questions: how enhanced geothermal activity changes the local and regional stress field; whether these activities can induce medium sized seismicity M > 3; (if so) how these events are correlated to geothermal activity in space and time; what is the largest possible event and strongest ground motion, and hence the potential hazard associated with these activities. The development of appropriate technology to thoroughly investigate and address these questions required a number of datasets to provide the different physical measurements distributed in space and time. Because such a dataset did not yet exist for an EGS system in the United State, we used current and past data from The Geysers geothermal field in northern California, which has been in operation since the 1960s. The research addressed the need to understand the causal mechanisms of induced seismicity, and demonstrated the advantage of imaging the physical properties and temporal changes of the reservoir. The work helped to model the relationship between injection and production and medium sized magnitude events that have jeopardized, and in some cases suspended, the generation of energy from EGS systems worldwide.

  2. Efficient Smoothing and Interpolation of Velocity Models for Seismic Wavefront Construction Algorithms

    E-Print Network [OSTI]

    Chen, Bo

    2012-10-19

    The wavefront construction (WFC) method is an effective tool to compute seismic ray fields and has wide applications. This paper applies the WFC method to a heterogeneous earth model represented as a 3-D grid instead of a sequence of smooth layers...

  3. Joint two-dimensional DC resistivity and seismic travel time inversion with cross-gradients constraints

    E-Print Network [OSTI]

    Meju, Max

    Joint two-dimensional DC resistivity and seismic travel time inversion with cross to evaluate the structural features common to both methods. The cross-gradients function is incorporated method. The resultant iterative two-dimensional (2-D) joint inversion scheme is successfully applied

  4. Seismicity in the Vicinity of Yucca Mountain, Nevada, for the Period October 1, 2004 to September 30, 2006

    SciTech Connect (OSTI)

    Smith, Ken

    2007-11-26

    This report describes earthquake activity within approximately 65 km of Yucca Mountain site during the October 1, 2004 to September 30, 2006 time period (FY05-06). The FY05-06 earthquake activity will be compared with the historical and more recent period of seismic activity in the Yucca Mountain region. The relationship between the distribution of seismicity and active faults, historical patterns of activity, and rates of earthquakes (number of events and their magnitudes) are important components in the assessment of the seismic hazard for the Yucca Mountain site. Since October 1992 the University of Nevada has compiled a catalog of earthquakes in the Yucca Mountain area. Seismicity reports have identified notable earthquake activity, provided interpretations of the seismotectonics of the region, and documented changes in the character of earthquake activity based on nearly 30 years of site-characterization monitoring. Data from stations in the seismic network in the vicinity of Yucca Mountain is collected and managed at the Nevada Seismological Laboratory (NSL) at the University of Nevada Reno (UNR). Earthquake events are systematically identified and cataloged under Implementing Procedures developed in compliance with the Nevada System of Higher Education (NSHE) Quality Assurance Program. The earthquake catalog for FY05-06 in the Yucca Mountain region submitted to the Yucca Mountain Technical Data Management System (TDMS) forms the basis of this report.

  5. Simplified vector-valued probabilistic seismic hazard analysis and probabilistic seismic demand analysis : application to the 13-story NEHRP reinforced concrete frame-wall building design example

    E-Print Network [OSTI]

    Barbosa, Andr R.

    2011-01-01

    Seismic collapse safety of reinforced concrete buildings: I. AssessmentSeismic collapse safety of reinforced concrete buildings: II. comparative assessment

  6. GEOPHYSICS, VOL. 61, NO. 6 (NOVEMBER-DECEMBER 1996); P. 17151727, 13 FIGS., 1 TABLE. Inversion of seismic refraction data using genetic algorithms

    E-Print Network [OSTI]

    Boschetti, Fabio

    of seismic refraction data using genetic algorithms Fabio Boschetti, Mike C. Dentith, and Ron D. List of synthetic seismic refraction data. In particular, we aimed at overcoming one of the main problems is progressively increased during the inversion, improves the convergence of the process. The method allows

  7. Report of the US Nuclear Regulatory Commission Piping Review Committee. Volume 2. Evaluation of seismic designs: a review of seismic design requirements for Nuclear Power Plant Piping

    SciTech Connect (OSTI)

    Not Available

    1985-04-01

    This document reports the position and recommendations of the NRC Piping Review Committee, Task Group on Seismic Design. The Task Group considered overlapping conservation in the various steps of seismic design, the effects of using two levels of earthquake as a design criterion, and current industry practices. Issues such as damping values, spectra modification, multiple response spectra methods, nozzle and support design, design margins, inelastic piping response, and the use of snubbers are addressed. Effects of current regulatory requirements for piping design are evaluated, and recommendations for immediate licensing action, changes in existing requirements, and research programs are presented. Additional background information and suggestions given by consultants are also presented.

  8. SEISMIC EVALUATION OF HYDROCARBON SATURATION IN DEEP-WATER RESERVOIRS

    SciTech Connect (OSTI)

    Michael Batzle; D-h Han; R. Gibson; Huw James

    2005-08-12

    We are now entering the final stages of our ''Seismic Evaluation of Hydrocarbon Saturation in Deep-Water Reservoirs'' project (Grant/Cooperative Agreement DE-FC26-02NT15342). We have now developed several techniques to help distinguish economic hydrocarbon deposits from false ''Fizz'' gas signatures. These methods include using the proper in situ rock and fluid properties, evaluating interference effects on data, and doing better constrained inversions for saturations. We are testing these techniques now on seismic data from several locations in the Gulf of Mexico. In addition, we are examining the use of seismic attenuation as indicated by frequency shifts below potential reservoirs. During this quarter we have: Began our evaluation of our latest data set over the Neptune Field; Developed software for computing composite reflection coefficients; Designed and implemented stochastic turbidite reservoir models; Produced software & work flow to improve frequency-dependent AVO analysis; Developed improved AVO analysis for data with low signal-to-noise ratio; and Examined feasibility of detecting fizz gas using frequency attenuation. Our focus on technology transfer continues, both by generating numerous presentations for the upcoming SEG annual meeting, and by beginning our planning for our next DHI minisymposium next spring.

  9. Validation of the SASSI2010 Subtraction Method Using Full Scale...

    Office of Environmental Management (EM)

    & Publications SASSI Analytical Methods Compared with SHAKE Results SASSI Breakout Session Application of the Computer Program SASSI for Seismic SSI Analysis of WTP Facilities...

  10. A ?nite element method to model attenuation and dispersion effects ...

    E-Print Network [OSTI]

    Patricio

    particular case the seismic method is ef?cient. 2 . Proposed methodology we consider a 2D isotropic ?uidsaturated porous material (I with boundary 3Q...

  11. Method for determining formation quality factor from well log...

    Office of Scientific and Technical Information (OSTI)

    determining formation quality factor from well log data and its application to seismic reservoir characterization Citation Details In-Document Search Title: Method for...

  12. Seismic Category I Structures Program

    SciTech Connect (OSTI)

    Bennett, J.G.; Dunwoody, W.E.; Farrar, C.R.

    1985-01-01

    With the use of different size scale models, the Seismic Category I Structures Program has demonstrated consistent results for measured values of stiffness at working loads. Furthermore, the values are well below the theoretical stiffnesses calculated from an uncracked strength-of-materials approach. The scale model structures, which are also models of each other, have demonstrated scalability between models. The current effort is to demonstrate that the use of microconcrete and other modeling effects do not introduce significant distortions that could drastically change conclusions regarding prototype behavior for these very stiff, shear-dominated structures. Working closely with the technical review group (TRG) for this program, structures have been designed and tests have been planned that will help to resolve issues surrounding the use of microconcrete scale models.

  13. Catalog of historic seismicity in the vicinity of the Chixoy-Polochic and Motagua faults, Guatemala. Final report

    SciTech Connect (OSTI)

    White, R.A.

    1984-01-01

    A new catalog of shallow historical earthquakes for the region of the Caribbean-North American plate boundary in Guatemala is presented. The catalog is drawn mostly from original official documents that are considered to be primary accounts. It contains 25 damaging earthquakes, 18 of which have not previously been published. The catalog is estimated to be complete for magnitude 6.5 earthquakes since 1700 for most of the study area. The earthquakes in this catalog can be grouped into periods of seismic activity alternating with extended periods of seismic quiescence. The periods of seismic activity appear to be terminated by the major rupture of either the Chixoy-Polochic or Motagua faults, the two principal sub-parallel faults that form the transform plate boundary in Guatemala. Although the plate boundary is not simple in this region, the alternating nature of the regional seismic activity with seismic quiescence is a classic example of the seismic cycle concept. It is estimated that a very large earthquake (M 7.5) may recur along a transform boundary fault between 160 to 300 years after the previous such earthquake in the region. 20 refs., 5 figs.

  14. Time-lapse crosswell seismic and VSP monitoring of injected CO2 in a brine aquifer

    E-Print Network [OSTI]

    Daley, Thomas M.; Myer, Larry R.; Peterson, J.E.; Majer, E.L.; Hoversten, G.M.

    2006-01-01

    Seismic Exploration, 14, Elsevier. Harris J.M. , Nolen-Seismic Profiling: Principles, Handbook of Geophysical Exploration:of Seismic Traveltime Tomography. Society of Exploration

  15. Exact seismic velocities for VTI and HTI media and extended Thomsen Formulas for stronger anisotropies

    E-Print Network [OSTI]

    Berryman, J.G.

    2008-01-01

    Exploration, Seismic Exploration, Volume 29, Elsevier,fairly unrealistic model for seismic exploration problems (2002, Understanding Seismic Anisotropy in Exploration and

  16. Seismic Structure of Shallow Lithosphere at Locations of Distinctive Seafloor Spreading /

    E-Print Network [OSTI]

    Henig, Ashlee Shae

    2013-01-01

    Lithologic interpretations of our seismic results are guidedx and z. Interpretation of the 2D seismic velocity models (to aid in interpretation of rock type from seismic velocity.

  17. Migration of a coarse fluvial sediment pulse detected by hysteresis in bedload generated seismic waves

    E-Print Network [OSTI]

    Roth, Danica L; Finnegan, Noah J; Brodsky, Emily E; Cook, K.L.; Stark, C.P.; Wang, H.W.

    2014-01-01

    uvial processes detected by riverside seismic and infrasoundof the seismic amplitude therefore re?ects processes otherand seismic data collection, as well as preliminary process-

  18. Performance-Based Seismic Demand Assessment of Concentrically Braced Steel Frame Buildings

    E-Print Network [OSTI]

    Chen, Chui-Hsin

    2010-01-01

    66 Figure 5.4 Process of evaluating seismic performanceResults Figure 5.4 Process of evaluating seismic performanceiterative process continued until adequate seismic perform-

  19. Seismic and Acoustic Investigations of Rock Fall Initiation, Processes, and Mechanics

    E-Print Network [OSTI]

    Zimmer, Valerie Louise

    2011-01-01

    Seismic and Acoustic Investigations of Rock Fall Initiation, Processes, Seismic and Acoustic Investigations of Rock Fall Initiation, Processes, other seismic sources was an iterative process.

  20. Using the ETAS Model for Catalog Declustering and Seismic Background Assessment

    E-Print Network [OSTI]

    Console, R.; Jackson, D. D.; Kagan, Y. Y.

    2010-01-01

    dependent behavior of the seismic process and its departureof stationa- rity for the seismic process. These constraintsof stationarity for the seismic process without the need of

  1. Seismic Structure of Shallow Lithosphere at Locations of Distinctive Seafloor Spreading /

    E-Print Network [OSTI]

    Henig, Ashlee Shae

    2013-01-01

    et al. , 2011) to process the seismic data. The downwardSeismic constraints on shallow crustal emplacement processesemplacement processes from the variation in seismic layer 2a

  2. Seismic and Acoustic Investigations of Rock Fall Initiation, Processes, and Mechanics

    E-Print Network [OSTI]

    Zimmer, Valerie Louise

    2011-01-01

    and Senfaute G. (2005). Seismic precursory patterns F. (2010). The seismic signature of rockslides: statistical analysis of seismic signals. Journal of

  3. Seismic Response of a Soft, High Plasticity, Diatomaceous Naturally Cemented Clay Deposit

    E-Print Network [OSTI]

    Vera-Grunauer, Xavier F.

    2014-01-01

    Concept of overstrength in seismic design. Proceedings ofSite characterization and seismic zonation of Guayaquiland Baratau, J. (2003). Micro-seismic zonation and elastic

  4. Seismic Structure of Shallow Lithosphere at Locations of Distinctive Seafloor Spreading /

    E-Print Network [OSTI]

    Henig, Ashlee Shae

    2013-01-01

    Geographic Locations of Seismic Lines . . . . . . . . . .Center from MultiChannel Seismic Data . . . . . . . . .Continued Multi-Channel Seismic Refraction Anal- ysis of

  5. Seismic Performance of Reinforced Concrete Bridges Allowed to Uplift During Multi-Directional Excitation

    E-Print Network [OSTI]

    Espinoza, Andres Oscar

    2011-01-01

    Abghari, A. (1999). Seismic Soil-Pile Structure InteractionNo. 9. Caltrans (2004). Seismic Design Criteria, Versionand Mander, J. (1994). Seismic energy-based fatigue damage

  6. The Seismic response of precast segmental bridge superstructures with bonded tendons

    E-Print Network [OSTI]

    Veletzos, Marc John

    2007-01-01

    31 2.4. Current Seismic Design Practice inS.H. , and Seible, F. , Seismic Performance of Precastand Commentary for the Seismic Rehabilitation of Buildings,

  7. Seismic Performance, Modeling, and Failure Assessment of Reinforced Concrete Shear Wall Buildings

    E-Print Network [OSTI]

    Tuna, Zeynep

    2012-01-01

    T. Y. , and Moehle, J.P. , Seismic safety evaluation of theEffective Stiffness for Seismic Analysis, ACI Journal ofResearch/ California seismic safety commission, The

  8. Seismic Deployments and Experiments: PeruNet, GeoNet, and SeismoPhone.

    E-Print Network [OSTI]

    2009-01-01

    Networked Sensing Seismic Deployments and Experiments:PeruNet: Installing a UCLA seismic line in Latin Americadata quality controll Seismic tomography to reveal slab

  9. Method for improved selectivity in photo-activation of molecular agents

    DOE Patents [OSTI]

    Fisher, Walter G. (Knoxville, TN); Wachter, Eric A. (Oak Ridge, TN); Dees, H. Craig (Knoxville, TN)

    2000-01-01

    An apparatus for the treatment of a particular volume of plant or animal tissue by treating the plant or animal tissue with at least one photo-active molecular agent, wherein the particular volume of the plant or animal tissue retains at least a portion of the at least one photo-active molecular agent, and then treating the particular volume of the plant or animal tissue with light sufficient to promote a simultaneous two-photon excitation of at least one of the at least one photo-active molecular agent retained in the particular volume of the plant or animal tissue, wherein the at least one photo-active molecular agent becomes active in the particular volume of the plant or animal tissue.

  10. MINUTES FROM SEISMIC LESSONS-LEARNED PANEL

    Office of Environmental Management (EM)

    11, 2010 Background The Chief of Nuclear Safety (CNS) hosted the sixth meeting of the seismic lessons- learned panel at the DOE Forrestal Building on May 11, 2010. This panel was...

  11. Seismic auxetic metamaterials as novel earthquake protections

    E-Print Network [OSTI]

    Ungureanu, Bogdan; Enoch, Stefan; Brl, Stphane; Guenneau, Sbastien

    2015-01-01

    We propose that wave propagation through a class of elastodynamic metamaterials opens unprecedented avenues in seismic wave protection based on spectral properties of auxetic metamaterials. The elastic parameters of these metamaterials, like the Poisson ratio {\

  12. Seismic modeling of complex stratified reservoirs

    E-Print Network [OSTI]

    Lai, Hung-Liang

    2009-05-15

    Turbidite reservoirs in deep-water depositional systems, such as the oil fields in the offshore Gulf of Mexico and North Sea, are becoming an important exploration target in the petroleum industry. Accurate seismic reservoir characterization...

  13. Seismic demands in precast concrete diaphragms

    E-Print Network [OSTI]

    Schoettler, Matthew John

    2010-01-01

    Precast Concrete Structures. PCI Journal , 23(1), pp. 40-seismic design methodology, PCI Journal, 54(1), pp. 100-part 2: Research program, PCI Journal, 50(6), pp. 14-31.

  14. Non-physical energy in seismic interferometry

    E-Print Network [OSTI]

    King, Simon James

    2012-06-25

    Non-physical arrivals produced by seismic interferometry, the process whereby Greens functions are synthesized between two points by cross-correlation, crossconvolution or deconvolution, are often considered to provide ...

  15. Seismic retrofitting of deficient Canadian buildings

    E-Print Network [OSTI]

    Gemme, Marie-Claude

    2009-01-01

    Many developed countries such as Canada and the United States are facing a significant infrastructure crisis. Most of their facilities have been built with little consideration of seismic design and durability issues. As ...

  16. Lunar Seismic Profiling Experiment Dynamic Analysis

    E-Print Network [OSTI]

    Rathbun, Julie A.

    II I! Lunar Seismic Profiling Experiment Dynamic Analysis CONTENTS Section 1. 0 Assumptions Section. The solid curve is a plot of the specification data for the Design and Qualification of the explosive

  17. Photo-activated luminescence sensor and method of detecting trichloroethylene and related volatile organochloride compounds

    DOE Patents [OSTI]

    Dinh, T.V.

    1996-06-11

    A sensor for detecting trichloroethylene and related volatile organochloride compounds uses a photo-activator that produces a photo-product complex with the contaminant. Characteristics of the light emitted from the complex will indicate the presence of the contaminant. A probe containing the photo-activator has an excitation light interface and a contaminant interface. One particular embodiment uses a porous membrane as the contaminant interface, so that the contaminant can migrate there through to the photo-activator and thereby form the complex. 23 figs.

  18. Photo-activated luminescence sensor and method of detecting trichloroethylene and related volatile organochloride compounds

    DOE Patents [OSTI]

    Dinh, Tuan V. (Knoxville, TN)

    1996-01-01

    A sensor for detecting trichloroethylene and related volatile organochloride compounds uses a photo-activator that produces a photo-product complex with the contaminant. Characteristics of the light emitted from the complex will indicate the presence of the contaminant. A probe containing the photo-activator has an excitation light interface and a contaminant interface. One particular embodiment uses a porous membrane as the contaminant interface, so that the contaminant can migrate therethrough to the photo-activator and thereby form the complex.

  19. Fluid driven torsional dipole seismic source

    DOE Patents [OSTI]

    Hardee, Harry C. (Albuquerque, NM)

    1991-01-01

    A compressible fluid powered oscillating downhole seismic source device capable of periodically generating uncontaminated horizontally-propagated, shear waves is provided. A compressible fluid generated oscillation is created within the device which imparts an oscillation to a housing when the device is installed in a housing such as the cylinder off an existing downhole tool, thereby a torsional seismic source is established. Horizontal waves are transferred to the surrounding bore hole medium through downhole clamping.

  20. Oil and Gas CDT Quantification of hydraulic fracturing induced seismic risks

    E-Print Network [OSTI]

    Henderson, Gideon

    quantification Overview Hydraulic fracturing or "fracking" is a technique that uses fluids, pumped at high. Seismic risks due to hydraulic fracturing have been identified following the fracking activities predictions of the coupled multi-physics phenomenon of fracking might arise from two primary sources

  1. Seismicity characteristics before the 2003 Chengkung, Taiwan, earthquake Yih-Min Wu a,

    E-Print Network [OSTI]

    Wu, Yih-Min

    , the Philippine Sea plate plunges northward under the Eurasian plate along the Ryukyu trench, whereas the Eurasian plate subducts eastward beneath the Philippine Sea plate off the southern tip of the island of Taiwan on the Philippine Sea Plate. Most of the seismic activity in the Taiwan region, including many large earthquakes

  2. Efficient Electromechanical (E/M) Impedance Measuring Method for Active Sensor Structural Health Monitoring

    E-Print Network [OSTI]

    Giurgiutiu, Victor

    technique for structural health monitoring. The E/M impedance method utilizes as its main apparatus Fourier Transform, PWAS, impedance analyzer 1. INTRODUCTION Structural health monitoring (SHM) is a method International Symposium on NDE for Health Monitoring and Diagnostics, Sensors and Smart Structures Technologies

  3. Analysis methods for solar heating and cooling applications: passive and active systems. 2nd edition

    SciTech Connect (OSTI)

    1980-01-01

    Brief descriptions of analysis methods and design tools which are valuable in performing parametric studies of candidate designs are presented in this brochure. The methods included range from rules-of-thumb for builders to the simulation packages used by researchers. (MHR)

  4. MULTI-ATTRIBUTE SEISMIC/ROCK PHYSICS APPROACH TO CHARACTERIZING FRACTURED RESERVOIRS

    SciTech Connect (OSTI)

    Gary Mavko

    2000-10-01

    This project consists of three key interrelated Phases, each focusing on the central issue of imaging and quantifying fractured reservoirs, through improved integration of the principles of rock physics, geology, and seismic wave propagation. This report summarizes the results of Phase I of the project. The key to successful development of low permeability reservoirs lies in reliably characterizing fractures. Fractures play a crucial role in controlling almost all of the fluid transport in tight reservoirs. Current seismic methods to characterize fractures depend on various anisotropic wave propagation signatures that can arise from aligned fractures. We are pursuing an integrated study that relates to high-resolution seismic images of natural fractures to the rock parameters that control the storage and mobility of fluids. Our goal is to go beyond the current state-of-the art to develop and demonstrate next generation methodologies for detecting and quantitatively characterizing fracture zones using seismic measurements. Our study incorporates 3 key elements: (1) Theoretical rock physics studies of the anisotropic viscoelastic signatures of fractured rocks, including up scaling analysis and rock-fluid interactions to define the factors relating fractures in the lab and in the field. (2) Modeling of optimal seismic attributes, including offset and azimuth dependence of travel time, amplitude, impedance and spectral signatures of anisotropic fractured rocks. We will quantify the information content of combinations of seismic attributes, and the impact of multi-attribute analyses in reducing uncertainty in fracture interpretations. (3) Integration and interpretation of seismic, well log, and laboratory data, incorporating field geologic fracture characterization and the theoretical results of items 1 and 2 above. The focal point for this project is the demonstration of these methodologies in the Marathon Oil Company Yates Field in West Texas.

  5. Interpreting Cross-correlations of One-bit Filtered Seismic Noise

    E-Print Network [OSTI]

    Hanasoge, Shravan

    2013-01-01

    Seismic noise, generated by oceanic microseisms and other sources, illuminates the crust in a manner different from tectonic sources, and therefore provides independent information. The primary measurable is the two-point cross-correlation, evaluated using traces recorded at a pair of seismometers over a finite-time interval. However, raw seismic traces contain intermittent large-amplitude perturbations arising from tectonic activity and instrumental errors, which may corrupt the estimated cross-correlations of microseismic fluctuations. In order to diminish the impact of these perturbations, the recorded traces are filtered using the nonlinear one-bit digitizer, which replaces the measurement by its sign. Previous theory shows that for stationary Gaussian-distributed seismic noise fluctuations one-bit and raw correlation functions are related by a simple invertible transformation. Here we extend this to show that the simple correspondence between these two correlation techniques remains valid for {\\it non-st...

  6. Linearized inverse scattering based on seismic Reverse Time Migration

    E-Print Network [OSTI]

    Tim J. P. M. Op 't Root; Christiaan C. Stolk; Maarten V. de Hoop

    2011-01-21

    In this paper we study the linearized inverse problem associated with imaging of reflection seismic data. We introduce an inverse scattering transform derived from reverse-time migration (RTM). In the process, the explicit evaluation of the so-called normal operator is avoided, while other differential and pseudodifferential operator factors are introduced. We prove that, under certain conditions, the transform yields a partial inverse, and support this with numerical simulations. In addition, we explain the recently discussed 'low-frequency artifacts' in RTM, which are naturally removed by the new method.

  7. A MULTI-DISCIPLINARY APPROACH TO PROTECTION OF INFRASTRUCTURE FROM SEISMIC ACTIONS QUEENSLAND UNIVERSITY OF TECHNOLOGY

    E-Print Network [OSTI]

    -DISCIPLINARY APPROACH TO PROTECTION OF INFRASTRUCTURE FROM SEISMIC ACTIONS STRENGTH DEMAND EXCEEDS CODE COMPLIANT DESIGN TO PROTECTION OF INFRASTRUCTURE FROM SEISMIC ACTIONS CURRENT STRUCTURAL DESIGN PRACTICE SEISMIC ENERGYA MULTI-DISCIPLINARY APPROACH TO PROTECTION OF INFRASTRUCTURE FROM SEISMIC ACTIONS QUEENSLAND

  8. Fracture Detection and Water Sweep Characterization Using Single-well Imaging, Vertical Seismic Profiling and Cross-dipole Methods in Tight and Super-k Zones, Haradh II, Saudi Arabia

    E-Print Network [OSTI]

    Aljeshi, Hussain Abdulhadi A.

    2012-07-16

    This work was conducted to help understand a premature and irregular water breakthrough which resulted from a waterflooding project in the increment II region of Haradh oilfield in Saudi Arabia using different geophysical methods. Oil wells cannot...

  9. Diffractive laser beam homogenizer including a photo-active material and method of fabricating the same

    DOE Patents [OSTI]

    Bayramian, Andy J; Ebbers, Christopher A; Chen, Diana C

    2014-05-20

    A method of manufacturing a plurality of diffractive optical elements includes providing a partially transmissive slide, providing a first piece of PTR glass, and directing first UV radiation through the partially transmissive slide to impinge on the first piece of PTR glass. The method also includes exposing predetermined portions of the first piece of PTR glass to the first UV radiation and thermally treating the exposed first piece of PTR glass. The method further includes providing a second piece of PTR glass and directing second UV radiation through the thermally treated first piece of PTR glass to impinge on the second piece of PTR glass. The method additionally includes exposing predetermined portions of the second piece of PTR glass to the second UV radiation, thermally treating the exposed second piece of PTR glass, and repeating providing and processing of the second piece of PTR glass using additional pieces of PTR glass.

  10. Model reduction for active control design using multiple-point Arnoldi methods

    E-Print Network [OSTI]

    Lassaux, G.

    A multiple-point Arnoldi method is derived for model reduction of computational fluid dynamic systems. By choosing the number of frequency interpolation points and the number of Arnoldi vectors at each frequency point, the ...

  11. A method for using polyethylene passive samplers to measure polycyclic aromatic hydrocarbon chemical activity in sediments

    E-Print Network [OSTI]

    Fernandez, Loretta A. (Loretta Ana)

    2005-01-01

    In order to aid in the determination of the hazards posed by hydrophobic organic compounds (HOCs) in sediment beds, a method for the use of polyethylene (PE) sheets as passive sampling devices for measuring chemical ...

  12. Seismic Line Location Map Hot Pot Project, Humboldt County, Nevada 2010

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

    Lane, Michael

    2012-01-01

    Location of seismic lines carried out under DOE funded project Advanced Seismic Data Analysis Program (The Hot Pot Project).

  13. Seismic Line Location Map Hot Pot Project, Humboldt County, Nevada 2010

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

    Lane, Michael

    Location of seismic lines carried out under DOE funded project Advanced Seismic Data Analysis Program (The Hot Pot Project).

  14. Stochastic estimation of aquifer geometry using seismic refraction data with borehole depth constraints

    E-Print Network [OSTI]

    Chen, J.

    2011-01-01

    Remediation Processes Using Time- Lapse Seismic Refraction,seismic refraction profile, or from the joint inversion process.

  15. Seismic Structure of Shallow Lithosphere at Locations of Distinctive Seafloor Spreading /

    E-Print Network [OSTI]

    Henig, Ashlee Shae

    2013-01-01

    ma: Results of a vertical seismic profile at ocean drillingma: Results of a vertical seismic profile at ocean drilling

  16. In-situ borehole seismic monitoring of injected CO2 at the Frio Site

    E-Print Network [OSTI]

    Daley, Thomas M.; Korneev, Valeri A.

    2006-01-01

    time-lapse vertical seismic profile (VSP) and crosswellFrio site, a vertical seismic profile (VSP) and a crosswell

  17. Seismic waves in rocks with fluids and fractures

    SciTech Connect (OSTI)

    Berryman, J.G.

    2007-05-14

    Seismic wave propagation through the earth is often stronglyaffected by the presence of fractures. When these fractures are filledwith fluids (oil, gas, water, CO2, etc.), the type and state of the fluid(liquid or gas) can make a large difference in the response of theseismic waves. This paper summarizes recent work on methods ofdeconstructing the effects of fractures, and any fluids within thesefractures, on seismic wave propagation as observed in reflection seismicdata. One method explored here is Thomsen's weak anisotropy approximationfor wave moveout (since fractures often induce elastic anisotropy due tononuniform crack-orientation statistics). Another method makes use ofsome very convenient fracture parameters introduced previously thatpermit a relatively simple deconstruction of the elastic and wavepropagation behavior in terms of a small number of fracture parameters(whenever this is appropriate, as is certainly the case for small crackdensities). Then, the quantitative effects of fluids on thesecrack-influence parameters are shown to be directly related to Skempton scoefficient B of undrained poroelasticity (where B typically ranges from0 to 1). In particular, the rigorous result obtained for the low crackdensity limit is that the crack-influence parameters are multiplied by afactor (1 ? B) for undrained systems. It is also shown how fractureanisotropy affects Rayleigh wave speed, and how measured Rayleigh wavespeeds can be used to infer shear wave speed of the fractured medium.Higher crack density results are also presented by incorporating recentsimulation data on such cracked systems.

  18. THMC Modeling of EGS Reservoirs Continuum through Discontinuum Representations. Capturing Reservoir Stimulation, Evolution and Induced Seismicity

    SciTech Connect (OSTI)

    Elsworth, Derek; Izadi, Ghazal; Gan, Quan; Fang, Yi; Taron, Josh; Sonnenthal, Eric

    2015-07-28

    This work has investigated the roles of effective stress induced by changes in fluid pressure, temperature and chemistry in contributing to the evolution of permeability and induced seismicity in geothermal reservoirs. This work has developed continuum models [1] to represent the progress or seismicity during both stimulation [2] and production [3]. These methods have been used to resolve anomalous observations of induced seismicity at the Newberry Volcano demonstration project [4] through the application of modeling and experimentation. Later work then focuses on the occurrence of late stage seismicity induced by thermal stresses [5] including the codifying of the timing and severity of such responses [6]. Furthermore, mechanistic linkages between observed seismicity and the evolution of permeability have been developed using data from the Newberry project [7] and benchmarked against field injection experiments. Finally, discontinuum models [8] incorporating the roles of discrete fracture networks have been applied to represent stimulation and then thermal recovery for new arrangements of geothermal wells incorporating the development of flow manifolds [9] in order to increase thermal output and longevity in EGS systems.

  19. Tectonic signatures on active margins

    E-Print Network [OSTI]

    Hogarth, Leah Jolynn

    2010-01-01

    Seismic stratigraphy - applications to hydrocarbon exploration:Seismic stratigraphy - applications to hydrocarbon exploration:Seismic stratigraphy - applications to hydrocarbon exploration:

  20. Stress magnitude and its temporal variation at Mt. Asama Volcano, Japan, from seismic anisotropy and GPS

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Stress magnitude and its temporal variation at Mt. Asama Volcano, Japan, from seismic anisotropy stress Japan The Earth's stress regime is fundamental to its physical processes, yet few methods can determine absolute stress, and measurements of temporal variations in stress are controversial. The Global