Sample records for geochemical exploration method

  1. Hg Anomalies In Soils- A Geochemical Exploration Method For Geothermal...

    Open Energy Info (EERE)

    Areas. Geothermics. () . Related Geothermal Exploration Activities Activities (5) Mercury Vapor At Breitenbush Hot Springs Area (Varekamp & Buseck, 1983) Mercury Vapor At...

  2. DNA-based methods of geochemical prospecting

    DOE Patents [OSTI]

    Ashby, Matthew (Mill Valley, CA)

    2011-12-06T23:59:59.000Z

    The present invention relates to methods for performing surveys of the genetic diversity of a population. The invention also relates to methods for performing genetic analyses of a population. The invention further relates to methods for the creation of databases comprising the survey information and the databases created by these methods. The invention also relates to methods for analyzing the information to correlate the presence of nucleic acid markers with desired parameters in a sample. These methods have application in the fields of geochemical exploration, agriculture, bioremediation, environmental analysis, clinical microbiology, forensic science and medicine.

  3. Exploring Frontiers in Kinetics and Mechanisms of Geochemical Processes at the Mineral/Water Interface

    E-Print Network [OSTI]

    Sparks, Donald L.

    Exploring Frontiers in Kinetics and Mechanisms of Geochemical Processes at the Mineral in the Earth's Critical Zone is the kinetics. The timescales for geochemical processes range from milliseconds geochemical processes including surface complexation, mineral transformations, and oxidation

  4. Hg Anomalies In Soils- A Geochemical Exploration Method For Geothermal

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:Photon Place:NetHealth DivisionHelioMotionisHesperia,Areas | Open

  5. Development of Exploration Methods for Engineered Geothermal...

    Open Energy Info (EERE)

    Systems Through Integrated Geophysical, Geologic and Geochemical Interpretation the Seismic Analysis Component Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  6. Resistivity, induced polarization, and self-potential methods in geothermal exploration

    SciTech Connect (OSTI)

    Ward, S.H.; Sill, W.R.

    1982-01-01T23:59:59.000Z

    An overview of the literature is presented. This is followed by a statement of some elementary electromagnetic theory necessary to establish the MKS system of units and the fundamental physics governing electrical methods of exploration. Next there is presented a reasonably detailed discussion of the electrical properties of earth materials including normal mode of conduction, surface conduction, electrode polarization, membrane polarization, semiconduction, melt conduction, real and complex resistivity, and the origin of self-potentials in geothermal systems. To illustrate how electrical methods are used within the framework of integrated geological, geochemical, and geophysical exploration, the case history of the Monroe-Red Hill hot springs system is presented.

  7. Development of Exploration Methods for Engineered Geothermal...

    Open Energy Info (EERE)

    non-invasive techniques. This proposed exploration methodology is expected to increase spatial resolution and reduce the non-uniqueness that is inherent in geological data,...

  8. Geochemical Characterization Using Geophysical Data and Markov Chain Monte Carolo methods: A Case Study at the South Oyster Bacterial Transport Site in Virginia

    SciTech Connect (OSTI)

    Chen, Jinsong; Hubbard, Susan; Rubin, Yoram; Murray, Chris; Roden, Eric; Majer, Ernest

    2003-11-18T23:59:59.000Z

    The spatial distribution of field-scale geochemical parameters, such as extractable Fe(II) and Fe(III), influences microbial processes and thus the efficacy of bioremediation. Because traditional characterization of those parameters is invasive and laborious, it is rarely performed sufficiently at the field-scale. Since both geochemical and geophysical parameters often correlate to some common physical properties (such as lithofacies), we investigated the utility of tomographic radar attenuation data for improving estimation of geochemical parameters using a Markov Chain Monte Carlo (MCMC) approach. The data used in this study included physical, geophysical, and geochemical measurements collected in and between several boreholes at the DOE South Oyster Bacterial Transport Site in Virginia. Results show that geophysical data, constrained by physical data, provided field-scale information about extractable Fe(II) and Fe(III) in a minimally invasive manner and with a resolution unparalleled by other geochemical characterization methods. This study presents our estimation framework for estimating Fe(II) and Fe(III), and its application to a specific site. Our hypothesis--that geochemical parameters and geophysical attributes can be linked through their mutual dependence on physical properties--should be applicable for estimating other geochemical parameters at other sites.

  9. Development and Application of a Paleomagnetic/Geochemical Method for Constraining the Timing of Burial Diagenetic and Fluid

    SciTech Connect (OSTI)

    Elmore, Richard D.; Engel, Michael H.

    2005-03-10T23:59:59.000Z

    Studies of diagenesis caused by fluid migration or other events are commonly hindered by a lack of temporal control. Our results to date demonstrate that a paleomagnetic/geochemical approach can be used to date fluid migration as well as burial diagenetic events. Our principal working hypothesis is that burial diagenetic processes (e.g., maturation of organic-rich sediments and clay diagenesis) and the migration of fluids can trigger the authigenesis of magnetic mineral phases. The ages of these events can be constrained by comparing chemical remanent magnetizations (CRMs) to independently established Apparent Polar Wander Paths. While geochemical (e.g. stable isotope and organic analyses) and petrographic studies provide important clues for establishing these relationships, the ultimate test of this hypothesis requires the application of independent dating methods to verify the paleomagnetic ages. Towards this end, we have used K-Ar dating of illitization as an alternative method for constraining the ages of magnetic mineral phases in our field areas.

  10. COMPARING DETECTION METHODS OF AFLATOXIN AND EXPLORING AFLATOXIN DECONTAMINATION METHODS

    E-Print Network [OSTI]

    Ray, David

    DECONTAMINATION METHODS Pages in Study: 81 Candidate for Degree of Master of Science Ethanol fermentation if aflatoxin concentrated in the distilled ethanol and/or dry distillers grain end-products. Alliquots of fermented mash, distilled ethanol, stillage, and dry distillers grain (DDG) were analyzed via LC

  11. Early Events in Protein Folding Explored by Rapid Mixing Methods

    E-Print Network [OSTI]

    Roder, Heinrich

    15 Early Events in Protein Folding Explored by Rapid Mixing Methods Heinrich Roder, Kosuke Maki for Understanding Protein Folding As with any complex reaction, time-resolved data are essential for elucidating the mechanism of protein folding. Even in cases where the whole process of folding occurs in a single step

  12. HBH-GEOCHEM-GEOPHY

    Energy Science and Technology Software Center (OSTI)

    003015WKSTN00 Hiereachical Bayesian Model for Combining Geochemical and Geophysical Data for Environmental Applications Software   

  13. Mercury Geochemical, Groundwater Geochemical, And Radiometric...

    Open Energy Info (EERE)

    Prospects In Northern Nevada Abstract Ground water sampling, desorbed mercury soil geochemical surveys and a radiometric geophysical survey was conducted in conjunction...

  14. Geochemical, mineralogical and microbiological characteristics...

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

    Geochemical, mineralogical and microbiological characteristics of sediment from a naturally reduced zone in a uranium Geochemical, mineralogical and microbiological characteristics...

  15. An Integrated Study Method For Exploration Of Gas Hydrate Reservoirs...

    Open Energy Info (EERE)

    approach for exploration of gas hydrate reservoirs in marine areas. Authors C. Y. Sun, B. H. Niu, P. F. Wen, Y. Y. Huang, H. Y. Wang, X. W. Huang and J. Li Published Journal...

  16. Using the PROMETHEE Multi-Criteria Decision Making Method to Define New Exploration Strategies for Rescue

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the environment. The aim of the exploration process is to cover the whole environment in a minimum period of timeUsing the PROMETHEE Multi-Criteria Decision Making Method to Define New Exploration Strategies University CNRS, UMR 6072 GREYC F-14032 Caen, France serge.stinckwich@ird.fr Abstract -- The exploration

  17. EXPLORING DECISION-MAKING METHODS FOR SUSTAINABLE DESIGN IN COMMERCIAL BUILDINGS

    E-Print Network [OSTI]

    Tommelein, Iris D.

    EXPLORING DECISION-MAKING METHODS FOR SUSTAINABLE DESIGN IN COMMERCIAL BUILDINGS by Paz Arroyo for Sustainable Design in Commercial Buildings Copyright 2014 by Paz Arroyo #12;1 ABSTRACT Exploring Decision-Making Methods for Sustainable Design in Commercial Buildings by Paz Arroyo Doctor

  18. A Five-Component Magneto-Telluric Method In Geothermal Exploration...

    Open Energy Info (EERE)

    Article: A Five-Component Magneto-Telluric Method In Geothermal Exploration- The Mt-5-Ex Abstract The present paper describes a new method designed both at recording and...

  19. PROJECT SUMMARY ITR: COLLABORATIVE RESEARCH-(ASE)-(DMC-INT): NEW METHODS FOR EXPLORATION OF DEEP-

    E-Print Network [OSTI]

    Whitcomb, Louis L.

    PROJECT SUMMARY ITR: COLLABORATIVE RESEARCH-(ASE)-(DMC-INT): NEW METHODS FOR EXPLORATION OF DEEP technology research problems which will advance the science and engineering of deep-ocean exploration-engineering as required based on field trial results. Expedition web site. Publications. Year 3: Expedition deploying

  20. Novel Coupled Thermochronometric and Geochemical Investigation...

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

    Coupled Thermochronometric and Geochemical Investigation of Blind Geothermal Resources in Fault-Controlled Dilational Corners Novel Coupled Thermochronometric and Geochemical...

  1. Concepts and methods for exploring the future of learning with digital technologies

    E-Print Network [OSTI]

    Boyer, Edmond

    Concepts and methods for exploring the future of learning with digital technologies D25.4.1 (Final) Current and future usages of E-learning metadata and ontologies. Main author : Carsten Ullrich (USAAR on current and future usages of annotations, metadata and ontologies in the e-learning projects of the JEIRP

  2. The application of iodine and magnetic susceptibility surface geochemical surveys in the Lodgepole Play, Eastern Williston Basin, North Dakota

    SciTech Connect (OSTI)

    Tedesco, S.A. [Atoka Geochemical Services Corp., Englewood, CO (United States)

    1996-06-01T23:59:59.000Z

    The use of surface geochemistry as a first pass exploration tool is becoming more prevalent in petroleum exploration. This is especially true due to the high cost of 2-D and 3-D surveys in defining small targets such as the Waulsortian mounds of the Lodgepole Formation. Surface geochemical surveys are very effective in pinpointing specific target areas for seismic surveying and thus reducing costs. Presented are examples of surface geochemical surveys utilizing magnetic susceptibility and iodine methods in delineating reservoirs in the Lodgepole, Mission Canyon and Red River formations. The types of surveys presented vary from reconnaissance to detail and examples of how to define a grid will be discussed. Surface geochemical surveys can be very effective when the areal extent of the target(s) and the purpose of the survey are clearly defined prior to implementation. By determining which areas have microseepage and which areas do not, surface geochemistry can be a very effective tool in focusing exploration efforts and maximizing exploration dollars.

  3. Blind Geothermal System Exploration in Active Volcanic Environments...

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

    Blind Geothermal System Exploration in Active Volcanic Environments; Multi-phase Geophysical and Geochemical Surveys in Overt & Subtle Volcanic Systems, Hawaii & Maui Blind...

  4. Cerro Prieto geothermal field: exploration during exploitation

    SciTech Connect (OSTI)

    Not Available

    1982-07-01T23:59:59.000Z

    Geological investigations at Momotombo included photogeology, field mapping, binocular microscope examination of cuttings, and drillhole correlations. Among the geophysical techniques used to investigate the field sub-structure were: Schlumberger and electromagnetic soundings, dipole mapping and audio-magnetotelluric surveys, gravity and magnetic measurements, frequency domain soundings, self-potential surveys, and subsurface temperature determinations. The geochemical program analyzed the thermal fluids of the surface and in the wells. The description and results of exploration methods used during the investigative stages of the Momotombo Geothermal Field are presented. A conceptual model of the geothermal field was drawn from the information available at each exploration phase. The exploration methods have been evaluated with respect to their contributions to the understanding of the field and their utilization in planning further development.

  5. New Geophysical Technique for Mineral Exploration and Mineral Discrimination Based on Electromagnetic Methods

    SciTech Connect (OSTI)

    Michael S. Zhdanov

    2005-03-09T23:59:59.000Z

    The research during the first year of the project was focused on developing the foundations of a new geophysical technique for mineral exploration and mineral discrimination, based on electromagnetic (EM) methods. The proposed new technique is based on examining the spectral induced polarization effects in electromagnetic data using modern distributed acquisition systems and advanced methods of 3-D inversion. The analysis of IP phenomena is usually based on models with frequency dependent complex conductivity distribution. One of the most popular is the Cole-Cole relaxation model. In this progress report we have constructed and analyzed a different physical and mathematical model of the IP effect based on the effective-medium theory. We have developed a rigorous mathematical model of multi-phase conductive media, which can provide a quantitative tool for evaluation of the type of mineralization, using the conductivity relaxation model parameters. The parameters of the new conductivity relaxation model can be used for discrimination of the different types of rock formations, which is an important goal in mineral exploration. The solution of this problem requires development of an effective numerical method for EM forward modeling in 3-D inhomogeneous media. During the first year of the project we have developed a prototype 3-D IP modeling algorithm using the integral equation (IP) method. Our IE forward modeling code INTEM3DIP is based on the contraction IE method, which improves the convergence rate of the iterative solvers. This code can handle various types of sources and receivers to compute the effect of a complex resistivity model. We have tested the working version of the INTEM3DIP code for computer simulation of the IP data for several models including a southwest US porphyry model and a Kambalda-style nickel sulfide deposit. The numerical modeling study clearly demonstrates how the various complex resistivity models manifest differently in the observed EM data. These modeling studies lay a background for future development of the IP inversion method, directed at determining the electrical conductivity and the intrinsic chargeability distributions, as well as the other parameters of the relaxation model simultaneously. The new technology envisioned in this proposal, will be used for the discrimination of different rocks, and in this way will provide an ability to distinguish between uneconomic mineral deposits and the location of zones of economic mineralization and geothermal resources.

  6. Experimental study to explore the $\\rm ^8Be$ induced nuclear reaction via the Trojan Horse Method

    E-Print Network [OSTI]

    Wen Qun-Gang; Li Cheng-Bo; Zhou Shu-Hua; Bakhadir Irgaziev; Fu Yuan-Yong; Claudio Spitaleri; Marco La Cognata; Zhou Jing; Meng Qiu-Ying; Livio Lamia; Marcello Lattuada

    2014-12-30T23:59:59.000Z

    To explore a possible indirect method for $\\rm ^8Be$ induced astrophysical reactions, the $\\rm ^9Be=({}^8Be+\\it n)$ cluster structure was studied via the Trojan Horse Method. It is the first time to study a super short life nucleus $\\rm ^8Be$ via the Trojan Horse Method, and it is the first time to make a valid test for $l=1$ Trojan-horse nucleus. The $\\rm ^9Be$ nucleus is assumed to have a ($\\rm {}^8Be+\\it n$) cluster structure and used as the Trojan-horse nucleus. The $\\rm ^8Be$ nucleus acts as a participant, while the neutron is a spectator to the virtual $\\rm ^8Be +{\\it d}\\rightarrow \\alpha + {}^6Li$ reaction via a suitable 3-body reaction $\\rm ^9Be +{\\it d}\\rightarrow \\alpha + {}^6Li +\\it n$. The experimental neutron momentum distribution inside $\\rm ^9Be$ was reconstructed. The agreement between experimental and theoretical momentum distribution indicates that there should be a ($\\rm {}^8Be+\\it n$) cluster structure inside $\\rm ^9Be$. Therefor the experimental study of $\\rm ^8Be$ induced reactions, for example the experimental measurement of the $\\rm ^8Be +\\alpha \\rightarrow {}^{12}C$ reaction proceeding through the Hoyle state, is possible.

  7. Implementation and evaluation of a hypercube-based method for spatio-temporal exploration and analysis

    E-Print Network [OSTI]

    ) Introduction Spatio-temporal exploration and spatio-temporal analysis are two complementary processes of spatio) dealing with spatio-temporal data (Marchand et al., 2002). The exploration process identifies hypotheses of the hypotheses formulated in the exploration process and, in some cases, proposes new ones. The EDA iterative

  8. New Geophysical Technique for Mineral Exploration and Mineral Discrimination Based on Electromagnetic Methods

    SciTech Connect (OSTI)

    Michael S. Zhdanov

    2009-03-09T23:59:59.000Z

    The research during the first two years of the project was focused on developing the foundations of a new geophysical technique for mineral exploration and mineral discrimination, based on electromagnetic (EM) methods. The developed new technique is based on examining the spectral induced polarization effects in electromagnetic data using effective-medium theory and advanced methods of 3-D modeling and inversion. The analysis of IP phenomena is usually based on models with frequency dependent complex conductivity distribution. In this project, we have developed a rigorous physical/mathematical model of heterogeneous conductive media based on the effective-medium approach. The new generalized effective-medium theory of IP effect (GEMTIP) provides a unified mathematical method to study heterogeneity, multi-phase structure, and polarizability of rocks. The geoelectrical parameters of a new composite conductivity model are determined by the intrinsic petrophysical and geometrical characteristics of composite media: mineralization and/or fluid content of rocks, matrix composition, porosity, anisotropy, and polarizability of formations. The new GEMTIP model of multi-phase conductive media provides a quantitative tool for evaluation of the type of mineralization, and the volume content of different minerals using electromagnetic data. We have developed a 3-D EM-IP modeling algorithm using the integral equation (IE) method. Our IE forward modeling software is based on the contraction IE method, which improves the convergence rate of the iterative solvers. This code can handle various types of sources and receivers to compute the effect of a complex resistivity model. We have demonstrated that the generalized effective-medium theory of induced polarization (GEMTIP) in combination with the IE forward modeling method can be used for rock-scale forward modeling from grain-scale parameters. The numerical modeling study clearly demonstrates how the various complex resistivity models manifest differently in the observed EM data. These modeling studies lay a background for future development of the IP inversion method, directed at determining the electrical conductivity and the intrinsic chargeability distributions, as well as the other parameters of the relaxation model simultaneously. The new technology introduced in this project can be used for the discrimination between uneconomic mineral deposits and the location of zones of economic mineralization and geothermal resources.

  9. Exploring the Latest Union2 SNIa Dataset by Using Model-Independent Parametrization Methods

    E-Print Network [OSTI]

    Shuang Wang; Xiao-Dong Li; Miao Li

    2011-01-04T23:59:59.000Z

    We explore the cosmological consequences of the recently released Union2 sample of 557 Type Ia supernovae (SNIa). Combining this latest SNIa dataset with the Cosmic microwave background (CMB) anisotropy data from the Wilkinson Microwave Anisotropy Probe 7 year (WMAP7) observations and the baryon acoustic oscillation (BAO) results from the Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7), we measure the dark energy density function $f(z)\\equiv \\rho_{de}(z)/\\rho_{de}(0)$ as a free function of redshift. Two model-independent parametrization methods (the binned parametrization and the polynomial interpolation parametrization) are used in this paper. By using the $\\chi^2$ statistic and the Bayesian information criterion, we find that the current observational data are still too limited to distinguish which parametrization method is better, and a simple model has advantage in fitting observational data than a complicated model. Moreover, it is found that all these parametrizations demonstrate that the Union2 dataset is still consistent with a cosmological constant at 1$\\sigma$ confidence level. Therefore, the Union2 dataset is different from the Constitution SNIa dataset, which more favors a dynamical dark energy.

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

    SciTech Connect (OSTI)

    James Reeves

    2005-01-31T23:59:59.000Z

    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.

  11. Use of iodine surface geochemical surveys in the Lodgepole and Minnelusa plays, U.S. northern Rockies

    SciTech Connect (OSTI)

    Tedesco, S.A.; Bretz, S. [Atoka Geochemical Services Corp., Englewood, CO (United States)

    1995-06-05T23:59:59.000Z

    The use of surface geochemistry is becoming more prevalent in oil exploration, especially for focusing specific target areas for 2D and 3D seismic surveys. Presented here are two surface geochemical surveys utilizing the iodine method in delineating Upper Minnelusa sands of Permian age in the Powder River basin and Lodgepole Waulsortian-like mounds of Mississippian age in the Williston basin. Iodine is an indirect indicator of a petroleum accumulation at depth. Increases in iodine anomalies are caused by the presence of petroleum seepage in the upper part of the soil section. In the very shallow surface, less than 10 ft, a reaction occurs between hydrocarbons and iodine under sunlight forming inorganic compounds. The source of the iodine is either from minerals in the soil and/or from the atmosphere with ultraviolet light as the initiator of the reaction. Any iodine in the subsurface could not migrate far in the presence of hydrocarbons and due to its large molecular size. The compounds that form in the soil remain solid and are relatively difficult to remove. Any surface geochemical anomaly needs to be followed by seismic in order to provide a specific drilling target. If a surface geochemical survey is properly designed and implemented, when no anomaly is present, then to date regardless of the type of method used the results have been dry holes. If a surface geochemical anomaly is present, the intensity, areal extent, and quality of the anomaly cannot determine the economic viability of the accumulation of depth, but there is a significant increase in the success rate. The best utilization of these methods is to determine areas where there is no possibility of finding petroleum and focusing on areas that do. In the case of the Lodgepole and Minnelusa plays, surface geochemistry allows a low cost approach and helps focus and minimize 2D and 3D survey costs.

  12. Geochemical Prospecting of Hydrocarbons in Frontier Basins of India* By

    E-Print Network [OSTI]

    B. Kumar; D. J. Patil; G. Kalpana; C. Vishnu Vardhan

    India has 26 sedimentary basins with a basinal area of approximately 1.8x 10 6 km 2 (excluding deep waters), out of which seven are producing basins and two have proven potential. Exploration efforts in other basins, called “frontier basins ” are in progress. These basins are characterized by varied geology, age, tectonics, and depositional environments. Hydrocarbon shows in many of these basins are known, and in few basins oil and gas have flowed in commercial /non-commercial quantities. Within the framework of India Hydrocarbon Vision – 2025 and New Exploration Licensing Policy, there is a continuous increase in area under active exploration. The asset management concept with multi-disciplinary teams has created a demand for synergic application of risk-reduction technologies, including surface geochemical surveys. National Geophysical Research Institute (NGRI), Hyderabad, India has initiated/planned surface geochemical surveys composed of gas chromatographic and carbon isotopic analyses in few of the frontier basins of India. The adsorbed soil gas data in one of the basins (Saurashtra basin, Gujarat) has shown varied concentrations of CH4 to C4H10. The C1 concentration varies between 3 to 766 ppb and ??C2+, 1 to 543 ppb. This basin has thin soil cover and the Mesozoic sediments (probable source rocks) are overlain by thick cover of Deccan Traps. The scope and perspective of geochemical surveys in frontier basins of India are presented here.

  13. Synthesis of organic geochemical data from the Eastern Gas Shales

    SciTech Connect (OSTI)

    Zielinski, R.E.; McIver, R.D.

    1982-01-01T23:59:59.000Z

    Over 2400 core and cuttings samples of Upper Devonian shales from wells in the Appalachian, Illinois, and Michigan Basins have been characterized by organic geochemical methods to provide a basis for accelerating the exploitation of this unconventional, gas-rich resource. This work was part of a program initiated to provide industry with criteria for locating the best areas for future drilling and for the development of stimulation methods that will make recovery of the resource economically attractive. The geochemical assessment shows that the shale, in much of the Appalachian, Illinois, and Michigan Basins is source rock that is capable of generating enormous quantities of gas. In some areas the shales are also capable of generating large quantities of oil as well. The limiting factors preventing these sources from realizing most of their potential are their very low permeabilities and the paucity of potential reservoir rocks. This geochemical data synthesis gives direction to future selection of sites for stimulation research projects in the Appalachian Basin by pinpointing those areas where the greatest volumes of gas are contained in the shale matrix. Another accomplishment of the geochemical data synthesis is a new estimate of the total resource of the Appalachian Basin. The new estimate of 2500 TCF is 25 percent greater than the highest previous estimates. This gives greater incentive to government and industry to continue the search for improved stimulation methods, as well as for improved methods for locating the sites where those improved stimulation methods can be most effectively applied.

  14. Development of Exploration Methods for Engineered Geothermal System through Integrated Geoscience Interpretation

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. This project will deploy, test and calibrate Non-invasive EGS Exploration Methodology integrating geoscience data to predict temperature and rock type at a scale of 5km x 5km at depths of 1-5km.

  15. Geochemical aspects of Michigan waterfloods

    SciTech Connect (OSTI)

    Tinker, G.E.; Barnes, P.F.; Olson, E.E.

    1983-10-01T23:59:59.000Z

    Waterflooding started in the carbonate oil reservoirs of the Northern Michigan Niagaran reef trend in 1978 with Shell's Chester 18 waterflood. Ten projects had been installed by the end of 1982 so that significant operational results are available for evaluation. The design and operating programs initially planned for the projects have been proven successful. Operating data from some of the more mature projects indicate that the understanding and proper management of the geochemical systems for these projects will be crucial to the success of the project. The intent of this paper is to present what is currently known and understood about the geochemistry of Michigan waterfloods. The geochemical system is here defined as all the various interconnected fluid environments constituting the project, namely the fresh water source system, the injection well system, the reservoir, the production wells, the production facilities, and the produced water disposal or reinjection facilities. Problem areas have been identified and corrective action has been taken or planned to counteract the detrimental effects of disruptions to the geochemical system. These upsets are brought about by injection of water into the reservoir where an equilibrium condition had existed between the formation fluids and the rock.

  16. Resource for the exploration of regulons accurately predicted by the methods of comparative genomics

    E-Print Network [OSTI]

    Novichkov, Pavel S.

    2014-01-01T23:59:59.000Z

    the methods of comparative genomics. Pavel S. Novichkov 1 ,Environmental Research, Genomics:GTL program through con-a computational comparative genomics approach is coming of

  17. Book Review - Geochemical Exploration 1982 | 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 Home5b9fcbce19 NoPublic Utilities Address: 160Benin: Energy ResourcesJersey:formBlueBombay Beach,Bonner Springs, Kansas:FacilityBook

  18. Geochemical 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 CenterFranconia, Virginia: Energy Resources Jump to: navigation, searchGeauga County, Ohio: EnergySector: SolarGenoa is aGeoGeochemical

  19. Explore This!

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

    Explore these Topics Explore Science Explore Explore these Topics Activities Videos Cool Links Favorite Q&A invisible utility element Explore This Science is far deeper and wider...

  20. A Coordinated Exploration Program for Geothermal Sources on the...

    Open Energy Info (EERE)

    on the island of Hawaii by using all relevant geophysical and geochemical methods. Infrared scanning aerial surveys followed by reconnaissance-type electrical surveys and group...

  1. We explore two new automated methods to quantify the impact of pain on the overall

    E-Print Network [OSTI]

    Apkarian, A. Vania

    the light to dark compartment. In the thermal operant task (thermal track), the floor of the dark (intraplanter injection of carrageenan model). Rats were individually placed in the light box and their crossing compartments. METHODS Fraction of Animals in the Dark Automated Thermal and Motoric Operant Task Differentiates

  2. Integration of first-principles methods and crystallographic database searches for new ferroelectrics: Strategies and explorations

    SciTech Connect (OSTI)

    Bennett, Joseph W. [Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854 (United States)] [Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854 (United States); Rabe, Karin M., E-mail: rabe@physics.rutgers.edu [Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854 (United States)

    2012-11-15T23:59:59.000Z

    In this concept paper, the development of strategies for the integration of first-principles methods with crystallographic database mining for the discovery and design of novel ferroelectric materials is discussed, drawing on the results and experience derived from exploratory investigations on three different systems: (1) the double perovskite Sr(Sb{sub 1/2}Mn{sub 1/2})O{sub 3} as a candidate semiconducting ferroelectric; (2) polar derivatives of schafarzikite MSb{sub 2}O{sub 4}; and (3) ferroelectric semiconductors with formula M{sub 2}P{sub 2}(S,Se){sub 6}. A variety of avenues for further research and investigation are suggested, including automated structure type classification, low-symmetry improper ferroelectrics, and high-throughput first-principles searches for additional representatives of structural families with desirable functional properties. - Graphical abstract: Integration of first-principles methods with crystallographic database mining, for the discovery and design of novel ferroelectric materials, could potentially lead to new classes of multifunctional materials. Highlights: Black-Right-Pointing-Pointer Integration of first-principles methods and database mining. Black-Right-Pointing-Pointer Minor structural families with desirable functional properties. Black-Right-Pointing-Pointer Survey of polar entries in the Inorganic Crystal Structural Database.

  3. Oil and gas exploration system and method for detecting trace amounts of hydrocarbon gases in the atmosphere

    DOE Patents [OSTI]

    Wamsley, Paula R. (Littleton, CO); Weimer, Carl S. (Littleton, CO); Nelson, Loren D. (Evergreen, CO); O'Brien, Martin J. (Pine, CO)

    2003-01-01T23:59:59.000Z

    An oil and gas exploration system and method for land and airborne operations, the system and method used for locating subsurface hydrocarbon deposits based upon a remote detection of trace amounts of gases in the atmosphere. The detection of one or more target gases in the atmosphere is used to indicate a possible subsurface oil and gas deposit. By mapping a plurality of gas targets over a selected survey area, the survey area can be analyzed for measurable concentration anomalies. The anomalies are interpreted along with other exploration data to evaluate the value of an underground deposit. The system includes a differential absorption lidar (DIAL) system with a spectroscopic grade laser light and a light detector. The laser light is continuously tunable in a mid-infrared range, 2 to 5 micrometers, for choosing appropriate wavelengths to measure different gases and avoid absorption bands of interference gases. The laser light has sufficient optical energy to measure atmospheric concentrations of a gas over a path as long as a mile and greater. The detection of the gas is based on optical absorption measurements at specific wavelengths in the open atmosphere. Light that is detected using the light detector contains an absorption signature acquired as the light travels through the atmosphere from the laser source and back to the light detector. The absorption signature of each gas is processed and then analyzed to determine if a potential anomaly exists.

  4. Asphaltenes as indicators of the geochemical history of oil

    SciTech Connect (OSTI)

    Aref'yev, O.A.; Makushina, V.M.; Petrov, A.A.

    1982-06-01T23:59:59.000Z

    A method of decomposition of native asphaltenes from naphthenic oils is proposed as a source of information on the geochemical history of the oils. It is demonstrated that formation of naphthenic oils occurs in nature through biodegradation of primary paraffinic oils. The relative abundances of structural groups and individual saturated hydrocarbons obtained from the asphaltenes in naphthenic oils is similar to the relative abundance of hydrocarbons in paraffinic oils, which are their genetic precursors. (JMT)

  5. Geochemical aspects of Michigan waterfloods

    SciTech Connect (OSTI)

    Tinker, G.E.; Barnes, P.F.; Olson, E.E.; Wright, M.P.

    1983-01-01T23:59:59.000Z

    Waterflooding started in the carbonate oil reservoirs of the N. Michigan Niagaran reef trend in 1978 with Shell's Chester 18 waterflood. Ten projects had been installed by the end of 1982 so that significant operational results are available for evaluation. This study presents what is currently known and understood about the geochemistry of Michigan waterfloods. Project monitoring procedures, established to control and optimize waterflood operations, have made it possible to develop the proper approach to the geochemical disruptions. The more important items in this program are the measurement of produced and injected volumes, transient pressure analyses, injection well profile surveys, chemical analysis of the injection and production fluid samples, radioactive injection tracers, and continuous bottom-hole pressures from submersible pumps. 15 references.

  6. The Momotombo Geothermal Field, Nicaragua: Exploration and development case history study

    SciTech Connect (OSTI)

    None

    1982-07-01T23:59:59.000Z

    This case history discusses the exploration methods used at the Momotombo Geothermal Field in western Nicaragua, and evaluates their contributions to the development of the geothermal field models. Subsequent reservoir engineering has not been synthesized or evaluated. A geothermal exploration program was started in Nicaragua in 1966 to discover and delineate potential geothermal reservoirs in western Nicaragua. Exploration began at the Momotombo field in 1970 using geological, geochemical, and geophysical methods. A regional study of thermal manifestations was undertaken and the area on the southern flank of Volcan Momotombo was chosen for more detailed investigation. Subsequent exploration by various consultants produced a number of geotechnical reports on the geology, geophysics, and geochemistry of the field as well as describing production well drilling. Geological investigations at Momotombo included photogeology, field mapping, binocular microscope examination of cuttings, and drillhole correlations. Among the geophysical techniques used to investigate the field sub-structure were: Schlumberger and electromagnetic soundings, dipole mapping and audio-magnetotelluric surveys, gravity and magnetic measurements, frequency domain soundings, self-potential surveys, and subsurface temperature determinations. The geochemical program analyzed the thermal fluids of the surface and in the wells. This report presents the description and results of exploration methods used during the investigative stages of the Momotombo Geothermal Field. A conceptual model of the geothermal field was drawn from the information available at each exploration phase. The exploration methods have been evaluated with respect to their contributions to the understanding of the field and their utilization in planning further development. Our principal finding is that data developed at each stage were not sufficiently integrated to guide further work at the field, causing inefficient use of resources.

  7. 818 IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, VOL. 20, NO. 5, MAY 2012 Design Exploration of Quadrature Methods

    E-Print Network [OSTI]

    Luk, Wayne

    Design Exploration of Quadrature Methods in Option Pricing Anson H. T. Tse, Student Member, IEEE, David architecture for accelerating quadrature methods used for pricing complex multi-dimensional options of dimensions. The performance and energy consumption of field-programmable gate arrays (FPGAs), GPUs

  8. Explore Science

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

    Science Explore Science Explore Explore these Topics Activities Videos Cool Links Favorite Q&A invisible utility element Science is thinking in an organized way about things...

  9. Methods for the survey and genetic analysis of populations

    DOE Patents [OSTI]

    Ashby, Matthew

    2003-09-02T23:59:59.000Z

    The present invention relates to methods for performing surveys of the genetic diversity of a population. The invention also relates to methods for performing genetic analyses of a population. The invention further relates to methods for the creation of databases comprising the survey information and the databases created by these methods. The invention also relates to methods for analyzing the information to correlate the presence of nucleic acid markers with desired parameters in a sample. These methods have application in the fields of geochemical exploration, agriculture, bioremediation, environmental analysis, clinical microbiology, forensic science and medicine.

  10. Soil Iodine Determination in Deccan Syneclise, India: Implications for Near Surface Geochemical Hydrocarbon Prospecting

    SciTech Connect (OSTI)

    Mani, Devleena, E-mail: devleenatiwari@ngri.res.in [National Geophysical Research Institute (Council of Scientific and Industrial Research) (India); Kumar, T. Satish [Oil India Limited (India); Rasheed, M. A.; Patil, D. J.; Dayal, A. M.; Rao, T. Gnaneshwar; Balaram, V. [National Geophysical Research Institute (Council of Scientific and Industrial Research) (India)

    2011-03-15T23:59:59.000Z

    The association of iodine with organic matter in sedimentary basins is well documented. High iodine concentration in soils overlying oil and gas fields and areas with hydrocarbon microseepage has been observed and used as a geochemical exploratory tool for hydrocarbons in a few studies. In this study, we measure iodine concentration in soil samples collected from parts of Deccan Syneclise in the west central India to investigate its potential application as a geochemical indicator for hydrocarbons. The Deccan Syneclise consists of rifted depositional sites with Gondwana-Mesozoic sediments up to 3.5 km concealed under the Deccan Traps and is considered prospective for hydrocarbons. The concentration of iodine in soil samples is determined using ICP-MS and the values range between 1.1 and 19.3 ppm. High iodine values are characteristic of the northern part of the sampled region. The total organic carbon (TOC) content of the soil samples range between 0.1 and 1.3%. The TOC correlates poorly with the soil iodine (r{sup 2} < 1), indicating a lack of association of iodine with the surficial organic matter and the possibility of interaction between the seeping hydrocarbons and soil iodine. Further, the distribution pattern of iodine compares well with two surface geochemical indicators: the adsorbed light gaseous hydrocarbons (methane through butane) and the propane-oxidizing bacterial populations in the soil. The integration of geochemical observations show the occurrence of elevated values in the northern part of the study area, which is also coincident with the presence of exposed dyke swarms that probably serve as conduits for hydrocarbon microseepage. The corroboration of iodine with existing geological, geophysical, and geochemical data suggests its efficacy as one of the potential tool in surface geochemical exploration of hydrocarbons. Our study supports Deccan Syneclise to be promising in terms of its hydrocarbon prospects.

  11. NUREG/CR-6870 Consideration of Geochemical

    E-Print Network [OSTI]

    in Groundwater Restoration at Uranium In-Situ Leach Mining Facilities Manuscript Completed: December 2006 Date associated with uranium mining sites throughout the United States are also included in this report. A tableNUREG/CR-6870 Consideration of Geochemical Issues in Groundwater Restoration at Uranium In

  12. Initial Report on the Development of a Monte Carlo-Markov Chain Joint Inversion Approach for Geothermal Exploration

    SciTech Connect (OSTI)

    Foxall, W; Ramirez, A; Carlson, S; Dyer, K; Sun, Y

    2007-04-25T23:59:59.000Z

    Geothermal exploration and subsequent characterization of potential resources typically employ a variety of geophysical, geologic and geochemical techniques. However, since the data collected by each technique provide information directly on only one or a very limited set of the many physical parameters that characterize a geothermal system, no single method can be used to describe the system in its entirety. Presently, the usual approach to analyzing disparate data streams for geothermal applications is to invert (or forward model) each data set separately and then combine or compare the resulting models, for the most part in a more or less ad hoc manner. However, while each inversion may yield a model that fits the individual data set, the models are usually inconsistent with each other to some degree. This reflects uncertainties arising from the inevitable fact that geophysical and other exploration data in general are to some extent noisy, incomplete, and of limited sensitivity and resolution, and so yield non-unique results. The purpose of the project described here is to integrate the different model constraints provided by disparate geophysical, geological and geochemical data in a rigorous and consistent manner by formal joint inversion. The objective is to improve the fidelity of exploration results and reservoir characterization, thus addressing the goal of the DOE Geothermal Program to improve success in exploration for economically viable resources by better defining drilling targets, reducing risk, and improving exploration/drilling success rates.

  13. Geochemical engineering and materials program plan

    SciTech Connect (OSTI)

    None

    1982-08-01T23:59:59.000Z

    The Department of Energy (DOE) was designated as lead agency in discharging the overall legislative mandate for federal R&D to assist the private sector in developing appropriate technology for exploiting geothermal energy resources. The Geochemical Engineering and Materials (GEM) Program was conceived, as part of DOE'S overall strategy, to address specific and plant-wide problems and uncertainties in the use of materials and in geochemical engineering. This program assists industry in the conduct of long-term,high-risk R&D needed to overcome the significant technical and economic GEM-related obstacles faced by developers and potential developers of this alternative energy source. The program focuses on: (1) Increasing the knowledge about the properties of materials and their performance under geothermal energy system conditions; (2) Developing and utilizing more reliable and/or cost-effective materials than previously available; and (3) Developing a greater understanding of and control over geochemical processes during fluid production and transport, energy conversion, and waste management. As a stand-alone program and as support to other DOE geothermal technology development programs, the GEM Program contributes to the feasibility of designing and operating efficient, reliable, and safe fluid handling and energy conversion systems.

  14. Trace Element Geochemical Zoning in the Roosevelt Hot Springs...

    Open Energy Info (EERE)

    in the development of distinctive trace element signatures. Geochemical analysis of soil sample, shallow temperature gradient drill hole cuttings and deep drill hole cutting...

  15. Geochemical and Geophysical Changes during Ammonia Gas Treatment...

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

    Geophysical Changes during Ammonia Gas Treatment of Vadose Zone Sediments for Uranium Remediation. Geochemical and Geophysical Changes during Ammonia Gas Treatment of Vadose Zone...

  16. Geochemical Controls on Contaminant Uranium in Vadose Hanford...

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

    Controls on Contaminant Uranium in Vadose Hanford Formation Sediments at the 200 Area and 300 Area, Hanford Site, Geochemical Controls on Contaminant Uranium in Vadose Hanford...

  17. Merging High Resolution Geophysical and Geochemical Surveys to...

    Open Energy Info (EERE)

    Buttes, Oregon Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Merging High Resolution Geophysical and Geochemical Surveys to Reduce...

  18. Category:Geochemical 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 Home5b9fcbce19 NoPublic Utilities Address: 160Benin: EnergyBostonFacilityCascade SierraStatusGeothermalpower.jpgGasGeochemical

  19. Upscaling geochemical reaction rates using pore-scale network modeling

    E-Print Network [OSTI]

    Peters, Catherine A.

    . To examine the scaling behavior of reaction kinetics, these continuum-scale rates from the network model as a valuable research tool for examining upscaling of geochemical kinetics. The pore-scale model allowsUpscaling geochemical reaction rates using pore-scale network modeling Li Li, Catherine A. Peters

  20. WATEQ3 geochemical model: thermodynamic data for several additional solids

    SciTech Connect (OSTI)

    Krupka, K.M.; Jenne, E.A.

    1982-09-01T23:59:59.000Z

    Geochemical models such as WATEQ3 can be used to model the concentrations of water-soluble pollutants that may result from the disposal of nuclear waste and retorted oil shale. However, for a model to competently deal with these water-soluble pollutants, an adequate thermodynamic data base must be provided that includes elements identified as important in modeling these pollutants. To this end, several minerals and related solid phases were identified that were absent from the thermodynamic data base of WATEQ3. In this study, the thermodynamic data for the identified solids were compiled and selected from several published tabulations of thermodynamic data. For these solids, an accepted Gibbs free energy of formation, ..delta..G/sup 0//sub f,298/, was selected for each solid phase based on the recentness of the tabulated data and on considerations of internal consistency with respect to both the published tabulations and the existing data in WATEQ3. For those solids not included in these published tabulations, Gibbs free energies of formation were calculated from published solubility data (e.g., lepidocrocite), or were estimated (e.g., nontronite) using a free-energy summation method described by Mattigod and Sposito (1978). The accepted or estimated free energies were then combined with internally consistent, ancillary thermodynamic data to calculate equilibrium constants for the hydrolysis reactions of these minerals and related solid phases. Including these values in the WATEQ3 data base increased the competency of this geochemical model in applications associated with the disposal of nuclear waste and retorted oil shale. Additional minerals and related solid phases that need to be added to the solubility submodel will be identified as modeling applications continue in these two programs.

  1. Underground Exploration

    E-Print Network [OSTI]

    Underground Exploration and Testing A Report to Congress and the Secretary of Energy Nuclear Waste Technical Review Board October 1993 Yucca Mountain at #12;Nuclear Waste Technical Review Board Dr. John E and Testing #12;Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Introduction

  2. Application Of Geochemical Methods In The Search For Geothermal Fields |

    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 Home5b9fcbce19 NoPublic Utilities Address: 160 East 300Algoil JumpAltergyExperimentsInformationAnuvuCommissionArea, Japan|

  3. Temporal Geochemical Variations In Volatile Emissions From Mount...

    Open Energy Info (EERE)

    Temporal Geochemical Variations In Volatile Emissions From Mount St Helens, Usa, 1980-1994 Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article:...

  4. Geochemical Data on Waters, Gases, Scales, and Rocks from the...

    Open Energy Info (EERE)

    Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Geochemical Data on Waters, Gases, Scales, and Rocks from the Dixie Valley Region, Nevada (1996-1999)...

  5. A Reconnaissance Geochemical Study Of La Primavera Geothermal...

    Open Energy Info (EERE)

    Study Of La Primavera Geothermal Area, Jalisco, Mexico Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: A Reconnaissance Geochemical Study Of La...

  6. A general-purpose, geochemical reservoir simulator

    SciTech Connect (OSTI)

    Liu, X.; Ortoleva, P.

    1996-12-31T23:59:59.000Z

    A geochemical simulator for the analysis of coupled reaction and transport processes is presented. The simulator is based on the numerical solution of the equations of coupled multi-phase fluid flow, species transport, energy balance and rock/fluid reactions. It also accounts for the effects of grain growth/dissolution and the alteration of porosity and permeability due to mineral reactions. The simulator can be used to analyze core floods, single-well scenarios and multiple production/injection well systems on the reservoir scale. Additionally, the simulator provides two flow options: the Darcy law for fluid flow in porous media and the Brinkman law that subsumes both free and porous medium flows. The simulator was tested using core acidizing data and results were in good agreement with laboratory observations. The simulator was applied to analyze matrix acidizing treatments for a horizontal well. The evolution of the skin factor was predicted and the optimal volume of acid required to remove the near-wellbore damage was determined. Reactive fluid infiltration was shown to lead to reaction-front fingering under certain conditions. Viscosity contrast in multiphase flow could also result in viscous fingering. Examples in this study also address these nonlinear fingering phenomena. A waterflood on the reservoir scale was analyzed and simulation results show that scale formation during waterfloods can occur far beyond injection wells. Two cases of waste disposal by deep well injection were evaluated and our simulation results were consistent with field measured data.

  7. Explore Science

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4:Epitaxial Thin FilmEquipment SSRL plansExpertsExplore Explore

  8. Exploration Geochemistry

    E-Print Network [OSTI]

    Michelson, David G.

    and environmental constraints. eter Winterburn #12;M D R U Societal demands for mineral resources continue to spur and restrictive policy changes. The discovery of new mineral resources requires increasing risk, increasing costs ­ Global Exploration for Vale. His research interests centre on innovation of cost-effective, robust

  9. 7 Efficient Exploration 7.1 Overview

    E-Print Network [OSTI]

    Shimkin, Nahum

    Methods: Here a more global view of the process is taken, and the schemes are directly designed to explore7 Efficient Exploration 7.1 Overview Efficient exploration of the action and state space is a crucial factor in the convergence rate of a learning scheme. An early survey of early exploration methods

  10. Exploration geochemistry: The Los Alamos experience

    SciTech Connect (OSTI)

    Maassen, L.W.; Bolivar, S.L.

    1989-01-01T23:59:59.000Z

    Los Alamos National Laboratory became actively involved in geochemical exploration in 1975 by conducting a reconnaissance-scale exploration program for uranium as part of the National Uranium Resource Evaluation program. Initially, only uranium and thorium were analyzed. By 1979 Los Alamos was analyzing a multielement suite. The data were presented in histograms and as black and white concentration plots for uranium and thorium only. Data for the remaining elements were presented as hard copy data listings in an appendix to the report. In 1983 Los Alamos began using exploration geochemistry for the purpose of finding economic mineral deposits to help stimulate the economies of underdeveloped countries. Stream-sediment samples were collected on the Caribbean island of St. Lucia and a geochemical atlas of that island was produced. The data were statistically smoothed and presented as computer-generated color plots of each element of the multielement suite. Studies for the US Bureau of Land Management in 1984 consisted of development of techniques for the integration of several large data sets, which could then be used for computer-assisted mineral resource assessments. A supervised classification technique was developed which compares the attributes of grid cells containing mines or mineral occurrences with attributes of unclassified cells not known to contain mines or occurrences. Color maps indicate how closely unclassified cells match in attributes the cells with mines or occurrences. 20 refs., 1 fig., 1 tab.

  11. GEOCHEMICAL MODELING OF F AREA SEEPAGE BASIN COMPOSITION AND VARIABILITY

    SciTech Connect (OSTI)

    Millings, M.; Denham, M.; Looney, B.

    2012-05-08T23:59:59.000Z

    From the 1950s through 1989, the F Area Seepage Basins at the Savannah River Site (SRS) received low level radioactive wastes resulting from processing nuclear materials. Discharges of process wastes to the F Area Seepage Basins followed by subsequent mixing processes within the basins and eventual infiltration into the subsurface resulted in contamination of the underlying vadose zone and downgradient groundwater. For simulating contaminant behavior and subsurface transport, a quantitative understanding of the interrelated discharge-mixing-infiltration system along with the resulting chemistry of fluids entering the subsurface is needed. An example of this need emerged as the F Area Seepage Basins was selected as a key case study demonstration site for the Advanced Simulation Capability for Environmental Management (ASCEM) Program. This modeling evaluation explored the importance of the wide variability in bulk wastewater chemistry as it propagated through the basins. The results are intended to generally improve and refine the conceptualization of infiltration of chemical wastes from seepage basins receiving variable waste streams and to specifically support the ASCEM case study model for the F Area Seepage Basins. Specific goals of this work included: (1) develop a technically-based 'charge-balanced' nominal source term chemistry for water infiltrating into the subsurface during basin operations, (2) estimate the nature of short term and long term variability in infiltrating water to support scenario development for uncertainty quantification (i.e., UQ analysis), (3) identify key geochemical factors that control overall basin water chemistry and the projected variability/stability, and (4) link wastewater chemistry to the subsurface based on monitoring well data. Results from this study provide data and understanding that can be used in further modeling efforts of the F Area groundwater plume. As identified in this study, key geochemical factors affecting basin chemistry and variability included: (1) the nature or chemistry of the waste streams, (2) the open system of the basins, and (3) duration of discharge of the waste stream types. Mixing models of the archetype waste streams indicated that the overall basin system would likely remain acidic much of the time. Only an extended periods of predominantly alkaline waste discharge (e.g., >70% alkaline waste) would dramatically alter the average pH of wastewater entering the basins. Short term and long term variability were evaluated by performing multiple stepwise modeling runs to calculate the oscillation of bulk chemistry in the basins in response to short term variations in waste stream chemistry. Short term (1/2 month and 1 month) oscillations in the waste stream types only affected the chemistry in Basin 1; little variation was observed in Basin 2 and 3. As the largest basin, Basin 3 is considered the primary source to the groundwater. Modeling showed that the fluctuation in chemistry of the waste streams is not directly representative of the source term to the groundwater (i.e. Basin 3). The sequence of receiving basins and the large volume of water in Basin 3 'smooth' or nullify the short term variability in waste stream composition. As part of this study, a technically-based 'charge-balanced' nominal source term chemistry was developed for Basin 3 for a narrow range of pH (2.7 to 3.4). An example is also provided of how these data could be used to quantify uncertainty over the long term variations in waste stream chemistry and hence, Basin 3 chemistry.

  12. Remote Raman - laser induced breakdown spectroscopy (LIBS) geochemical investigation under Venus atmospheric conditions

    SciTech Connect (OSTI)

    Clegg, Sanuel M [Los Alamos National Laboratory; Barefield, James E [Los Alamos National Laboratory; Humphries, Seth D [Los Alamos National Laboratory; Wiens, Roger C [Los Alamos National Laboratory; Vaniman, D. T. [Los Alamos National Laboratory; Sharma, S. K. [UNIV OF HAWAII; Misra, A. K. [UNIV OF HAWAII; Dyar, M. D. [MT. HOLYOKE COLLEGE; Smrekar, S. E. [JET PROPULSION LAB.

    2010-12-13T23:59:59.000Z

    The extreme Venus surface temperatures ({approx}740 K) and atmospheric pressures ({approx}93 atm) create a challenging environment for surface missions. Scientific investigations capable of Venus geochemical observations must be completed within hours of landing before the lander will be overcome by the harsh atmosphere. A combined remote Raman - LIBS (Laser Induced Breakdown Spectroscopy) instrument is capable of accomplishing the geochemical science goals without the risks associated with collecting samples and bringing them into the lander. Wiens et al. and Sharma et al. demonstrated that both analytical techniques can be integrated into a single instrument capable of planetary missions. The focus of this paper is to explore the capability to probe geologic samples with Raman - LIBS and demonstrate quantitative analysis under Venus surface conditions. Raman and LIBS are highly complementary analytical techniques capable of detecting both the mineralogical and geochemical composition of Venus surface materials. These techniques have the potential to profoundly increase our knowledge of the Venus surface composition, which is currently limited to geochemical data from Soviet Venera and VEGA landers that collectively suggest a surface composition that is primarily tholeiitic basaltic with some potentially more evolved compositions and, in some locations, K-rich trachyandesite. These landers were not equipped to probe the surface mineralogy as can be accomplished with Raman spectroscopy. Based on the observed compositional differences and recognizing the imprecise nature of the existing data, 15 samples were chosen to constitute a Venus-analog suite for this study, including five basalts, two each of andesites, dacites, and sulfates, and single samples of a foidite, trachyandesite, rhyolite, and basaltic trachyandesite under Venus conditions. LIBS data reduction involved generating a partial least squares (PLS) model with a subset of the rock powder standards to quantitatively determine the major elemental abundance of the remaining samples. PLS analysis suggests that the major element compositions can be determined with root mean square errors ca. 5% (absolute) for SiO{sub 2}, Al{sub 2}O{sub 3}, Fe{sub 2}O{sub 3}(total), MgO, and CaO, and ca. 2% or less for TiO{sub 2}, Cr{sub 2}O{sub 3}, MnO, K{sub 2}O, and Na{sub 2}O. Finally, the Raman experiments have been conducted under supercritical CO{sub 2} involving single-mineral and mixed-mineral samples containing talc, olivine, pyroxenes, feldspars, anhydrite, barite, and siderite. The Raman data have shown that the individual minerals can easily be identified individually or in mixtures.

  13. Collaborative Exploration with a Micro Aerial Vehicle: A Novel Interaction Method for Controlling a MAV with a Hand-Held Device

    E-Print Network [OSTI]

    Pitman, David

    2012-01-01T23:59:59.000Z

    In order to collaboratively explore an environment with a Micro Aerial Vehicle (MAV), an operator needs a mobile interface, which can support the operator’s divided attention. To this end, we developed the Micro Aerial ...

  14. Crustal melting in the Himalayan orogen : field, geochemical and geochronological studies in the Everest region, Nepal

    E-Print Network [OSTI]

    Viskupic, Karen M. (Karen Marie), 1975-

    2003-01-01T23:59:59.000Z

    A combination of field studies and geochemical techniques were used to investigate the timing and processes involved in leucogranite generation in the Everest region of the Himalayan orogen. Geochemical investigations ...

  15. Abstract, International Applied Geochemistry Symposium, 2009 Peat groundwater as a medium for surficial geochemical exploration

    E-Print Network [OSTI]

    Abstract, International Applied Geochemistry Symposium, 2009 1 Peat groundwater as a medium-mail: stew.hamilton@ontario.ca) ABSTRACT: Kimberlite-specific chemical responses are visible in shallow peat and migrated through the Tyrell Sea sediment into shallow peat groundwater. The presence of elevated values

  16. Geochemical Modeling of ILAW Lysimeter Water Extracts

    SciTech Connect (OSTI)

    Cantrell, Kirk J.

    2014-12-22T23:59:59.000Z

    Geochemical modeling results of water extracts from simulated immobilized low-activity waste (ILAW) glasses, placed in lysimeters for eight years suggest that the secondary phase reaction network developed using product consistency test (PCT) results at 90°C may need to be modified for field conditions. For sediment samples that had been collected from near the glass samples, the impact of glass corrosion could be readily observed based upon the pH of their water extracts. For unimpacted sediments the pH ranged from 7.88 to 8.11 with an average of 8.04. Sediments that had observable impacts from glass corrosion exhibited elevated pH values (as high as 9.97). For lysimeter sediment samples that appear to have been impacted by glass corrosion to the greatest extent, saturation indices determined for analcime, calcite, and chalcedony in the 1:1 water extracts were near equilibrium and were consistent with the secondary phase reaction network developed using PCT results at 90°C. Fe(OH)3(s) also appears to be essentially at equilibrium in extracts impacted by glass corrosion, but with a solubility product (log Ksp) that is approximately 2.13 units lower than that used in the secondary phase reaction network developed using PCT results at 90°C. The solubilities of TiO2(am) and ZrO2(am) also appear to be much lower than that assumed in the secondary phase reaction network developed using PCT results at 90°C. The extent that the solubility of TiO2(am) and ZrO2(am) were reduced relative to that assumed in the secondary phase reaction network developed using PCT results at 90°C could not be quantified because the concentrations of Ti and Zr in the extracts were below the estimated quantification limit. Gibbsite was consistently highly oversaturated in the extract while dawsonite was at or near equilibrium. This suggests that dawsonite might be a more suitable phase for the secondary phase reaction network than gibbsite under field conditions. This may be due to the availability of carbonate that exists in the Hanford sediments as calcite. A significant source of carbonate was not available in the PCTs and this may account for why this phase did not appear in the PCTs. Sepiolite was consistently highly undersaturated, suggesting that another phase controls the solubility of magnesium. For samples that were most impacted by the effects of glass corrosion, magnesite appears to control glass corrosion. For samples that show less impacts from glass corrosion, clinochlore-7A or saponite-Mg appears to control the magnesium concentrations. For zinc, it appears that zincite is a better candidate than Zn(OH)2-? for controlling zinc concentrations in the extracts; however, in some samples all zinc phases considered were highly oversaturated. As a result the phase that controls zinc concentrations in the lysimeter extracts remains uncertain.

  17. Copyright 2004 IEEE. Published in the Proceedings of the 36th Annual North American Power Symposium, August 9-10 2004, University of Idaho, Moscow, Idaho Abstract--This paper explores a mathematical method for

    E-Print Network [OSTI]

    for detecting groups of generators in an electric power system that have the potential to benefit from explores a mathematical method for detecting groups of generators in an electric power system that have the matrices can provide metrics for market power. Index Terms--Optimal power flow, electricity markets, market

  18. EXPLORATION ACTIVITY WORKSHEET MAJOR & CAREER EXPLORATION

    E-Print Network [OSTI]

    Milchberg, Howard

    of activity or process you should explore to bring you closer to your academic goals. NameEXPLORATION ACTIVITY WORKSHEET MAJOR & CAREER EXPLORATION Purpose: The exploration activity is designed for students to "explore" opportunities at UM as they relate to student success, majors, careers

  19. Geochemical Data Analysis | 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 CenterFranconia, Virginia: Energy Resources Jump to: navigation, searchGeauga County, Ohio: EnergySector: SolarGenoa is aGeo Exploration

  20. U.S. Geological Survey National Produced Waters Geochemical Database v2.0 (PROVISIONAL)

    E-Print Network [OSTI]

    Torgersen, Christian

    U.S. Geological Survey National Produced Waters Geochemical Database v2.0 (PROVISIONAL (USGS) National Produced Waters Geochemical Database v2.0 are provisional and subject to revision Produced Waters Geochemical Database v2.0 should be used with careful consideration of its limitations

  1. argentina mineralogical geochemical: Topics by E-print Network

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

    argentina mineralogical geochemical First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 A shocking state:...

  2. ORIGINAL PAPER Geochemical Evolution of Great Salt Lake, Utah, USA

    E-Print Network [OSTI]

    Discipline, US Geological Survey, 2329 Orton Circle, Salt Lake City, UT 84119, USA R. J. Spencer GeoscienceORIGINAL PAPER Geochemical Evolution of Great Salt Lake, Utah, USA Blair F. Jones Ã? David L. Naftz Ã? Ronald J. Spencer Ã? Charles G. Oviatt Received: 13 June 2008 / Accepted: 10 November 2008

  3. Oil and Gas Exploration (Connecticut)

    Broader source: Energy.gov [DOE]

    These regulations apply to activities conducted for the purpose of obtaining geological, geophysical, or geochemical information about oil or gas including seismic activities but excluding...

  4. Data Exploration at NERSC

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

    Exploration Data Exploration energy16gunther.jpg Highly interactive data exploration is a key component of scientific analytics, often combining multiple analytics technologies,...

  5. Geothermal exploration program, Hill Air Force Base, Davis and Weber Counties, Utah

    SciTech Connect (OSTI)

    Glenn, W.E.; Chapman, D.S.; Foley, D.; Capuano, R.M.; Cole, D.; Sibbett, B.; Ward, S.H.

    1980-03-01T23:59:59.000Z

    Results obtained from a program designed to locate a low- or moderate-temperature geothermal resource that might exist beneath Hill Air Force Base (AFB), Ogden, Utah are discussed. A phased exploration program was conducted at Hill AFB. Published geological, geochemical, and geophysical reports on the area were examined, regional exploration was conducted, and two thermal gradient holes were drilled. This program demonstrated that thermal waters are not present in the shallow subsurface at this site. (MHR)

  6. Argonne Geothermal Geochemical Database v2.0

    SciTech Connect (OSTI)

    Harto, Christopher

    2013-05-22T23:59:59.000Z

    A database of geochemical data from potential geothermal sources aggregated from multiple sources as of March 2010. The database contains fields for the location, depth, temperature, pH, total dissolved solids concentration, chemical composition, and date of sampling. A separate tab contains data on non-condensible gas compositions. The database contains records for over 50,000 wells, although many entries are incomplete. Current versions of source documentation are listed in the dataset.

  7. Argonne Geothermal Geochemical Database v2.0

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

    Harto, Christopher

    A database of geochemical data from potential geothermal sources aggregated from multiple sources as of March 2010. The database contains fields for the location, depth, temperature, pH, total dissolved solids concentration, chemical composition, and date of sampling. A separate tab contains data on non-condensible gas compositions. The database contains records for over 50,000 wells, although many entries are incomplete. Current versions of source documentation are listed in the dataset.

  8. Merging high resolution geophysical and geochemical surveys to...

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

    Buttes, Oregon Innovative Exploration Technologies Maui Hawaii & Glass Buttes, Oregon Blind Geothermal System Exploration in Active Volcanic Environments; Multi-phase Geophysical...

  9. Microbial distributions detected by an oligonucleotide microarray across geochemical zones associated with methane in marine sediments from the Ulleung Basin

    SciTech Connect (OSTI)

    Briggs, Brandon R.; Graw, Michael; Brodie, Eoin L.; Bahk, Jang-Jun; Kim, Sung-Han; Hyun, Jung-Ho; Kim, Ji-Hoon; Torres, Marta; Colwell, Frederick S.

    2013-11-01T23:59:59.000Z

    The biogeochemical processes that occur in marine sediments on continental margins are complex; however, from one perspective they can be considered with respect to three geochemical zones based on the presence and form of methane: sulfate–methane transition (SMTZ), gas hydrate stability zone (GHSZ), and free gas zone (FGZ). These geochemical zones may harbor distinct microbial communities that are important in biogeochemical carbon cycles. The objective of this study was to describe the microbial communities in sediments from the SMTZ, GHSZ, and FGZ using molecular ecology methods (i.e. PhyloChip microarray analysis and terminal restriction fragment length polymorphism (T-RFLP)) and examining the results in the context of non-biological parameters in the sediments. Non-metric multidimensional scaling and multi-response permutation procedures were used to determine whether microbial community compositions were significantly different in the three geochemical zones and to correlate samples with abiotic characteristics of the sediments. This analysis indicated that microbial communities from all three zones were distinct from one another and that variables such as sulfate concentration, hydrate saturation of the nearest gas hydrate layer, and depth (or unmeasured variables associated with depth e.g. temperature, pressure) were correlated to differences between the three zones. The archaeal anaerobic methanotrophs typically attributed to performing anaerobic oxidation of methane were not detected in the SMTZ; however, the marine benthic group-B, which is often found in SMTZ, was detected. Within the GHSZ, samples that were typically closer to layers that contained higher hydrate saturation had indicator sequences related to Vibrio-type taxa. These results suggest that the biogeographic patterns of microbial communities in marine sediments are distinct based on geochemical zones defined by methane.

  10. Sulfur gas geochemical detection of hydrothermal systems. Final report

    SciTech Connect (OSTI)

    Rouse, G.E.

    1984-01-01T23:59:59.000Z

    The purpose of this investigation was to determine whether a system of exploration using sulfur gases was capable of detecting convecting hydrothermal systems. Three surveying techniques were used at the Roosevelt Hot Springs KGRA in Utah. These were (a) a sniffing technique, capable of instantaneous determinations of sulfur gas concentration, (b) an accumulator technique, capable of integrating the sulfur gas emanations over a 30 day interval, and (c) a method of analyzing the soils for vaporous sulfur compounds. Because of limitations in the sniffer technique, only a limited amount of surveying was done with this method. The accumulator and soil sampling techniques were conducted on a 1000 foot grid at Roosevelt Hot Springs, and each sample site was visited three times during the spring of 1980. Thus, three soil samples and two accumulator samples were collected at each site. The results are shown as averages of three soil and two accumulator determinations of sulfur gas concentrations at each site. Soil surveys and accumulator surveys were conducted at two additional KGRA's which were chosen based on the state of knowledge of these hydrothermal systems and upon their differences from Roosevelt Hot Springs in an effort to show that the exploration methods would be effective in detecting geothermal reservoirs in general. The results at Roosevelt Hot Springs, Utah show that each of the three surveying methods was capable of detecting sulfur gas anomalies which can be interpreted to be related to the source at depth, based on resistivity mapping of that source, and also correlatable with major structural features of the area which are thought to be controlling the geometry of the geothermal reservoir. The results of the surveys at Roosevelt did not indicate that either the soil sampling technique or the accumulator technique was superior to the other.

  11. E-Print Network 3.0 - aquifers geochemical results Sample Search...

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

    for: aquifers geochemical results Page: << < 1 2 3 4 5 > >> 1 Treated domestic wastewater traditionally has been discharged offshore in coastal areas via ocean outfalls. In...

  12. Review of geochemical measurement techniques for a nuclear waste repository in bedded salt

    SciTech Connect (OSTI)

    Knauss, K.G.; Steinborn, T.L.

    1980-05-22T23:59:59.000Z

    A broad, general review is presented of geochemical measurement techniques that can provide data necessary for site selection and repository effectiveness assessment for a radioactive waste repository in bedded salt. The available measurement techniques are organized according to the parameter measured. The list of geochemical parameters include all those measurable geochemical properties of a sample whole values determine the geochemical characteristics or behavior of the system. For each technique, remarks are made pertaining to the operating principles of the measurement instrument and the purpose for which the technique is used. Attention is drawn to areas where further research and development are needed.

  13. Spatial and Geochemical Spatial and Geochemical Heterogeneity Impacts on Iron Biomineralization and Uranium Sequestration

    SciTech Connect (OSTI)

    Scott Fendorf; Shawn Benner; Jim Neiss; Colleen Hansel; Peter Nico; Chris Francis; Phil Jardine

    2004-03-17T23:59:59.000Z

    Bioreductive transformations of iron (hydr)oxides are a critically important processes controlling the fate and transport of contaminants in soil and aquifer systems. Heterogeneity arising from both chemical and physical conditions will lead to various biomineralization products of iron oxides and will additionally alter reactions controlling the partitioning of hazardous elements such as uranium. We are presently exploring chemical and mineralogical transformations within physically complex material having a range of pore-size distribution and chemical environments. Here we discuss the impact of calcium on the reactive transport of uranium and the spatial heterogeneity in iron hydroxide mineralization and concomitant uranium reduction along a diffusive flow path.

  14. The Mississippian Leadville Limestone Exploration Play, Utah and Colorado-Exploration Techniques and Studies for Independents

    SciTech Connect (OSTI)

    Thomas Chidsey

    2008-09-30T23:59:59.000Z

    The Mississippian (late Kinderhookian to early Meramecian) Leadville Limestone is a shallow, open-marine, carbonate-shelf deposit. The Leadville has produced over 53 million barrels (8.4 million m{sup 3}) of oil/condensate from seven fields in the Paradox fold and fault belt of the Paradox Basin, Utah and Colorado. The environmentally sensitive, 7500-square-mile (19,400 km{sup 2}) area that makes up the fold and fault belt is relatively unexplored. Only independent producers operate and continue to hunt for Leadville oil targets in the region. The overall goal of this study is to assist these independents by (1) developing and demonstrating techniques and exploration methods never tried on the Leadville Limestone, (2) targeting areas for exploration, (3) increasing deliverability from new and old Leadville fields through detailed reservoir characterization, (4) reducing exploration costs and risk especially in environmentally sensitive areas, and (5) adding new oil discoveries and reserves. The final results will hopefully reduce exploration costs and risks, especially in environmentally sensitive areas, and add new oil discoveries and reserves. The study consists of three sections: (1) description of lithofacies and diagenetic history of the Leadville at Lisbon field, San Juan County, Utah, (2) methodology and results of a surface geochemical survey conducted over the Lisbon and Lightning Draw Southeast fields (and areas in between) and identification of oil-prone areas using epifluorescence in well cuttings from regional wells, and (3) determination of regional lithofacies, description of modern and outcrop depositional analogs, and estimation of potential oil migration directions (evaluating the middle Paleozoic hydrodynamic pressure regime and water chemistry). Leadville lithofacies at Libon field include open marine (crinoidal banks or shoals and Waulsortian-type buildups), oolitic and peloid shoals, and middle shelf. Rock units with open-marine and restricted-marine facies constitute a significant reservoir potential, having both effective porosity and permeability when dissolution of skeletal grains, followed by dolomitization, has occurred. Two major types of diagenetic dolomite are observed in the Leadville Limestone at Lisbon field: (1) tight 'early' dolomite consisting of very fine grained (<5 {micro}m), interlocking crystals that faithfully preserve depositional fabrics; and (2) porous, coarser (>100-250 {micro}m), rhombic and saddle crystals that discordantly replace limestone and earlier very fine grained dolomite. Predating or concomitant with late dolomite formation are pervasive leaching episodes that produced vugs and extensive microporosity. Most reservoir rocks within Lisbon field appear to be associated with the second, late type of dolomitization and associated leaching events. Other diagenetic products include pyrobitumen, syntaxial cement, sulfide minerals, anhydrite cement and replacement, and late macrocalcite. Fracturing (solution enlarged) and brecciation (autobrecciation) caused by hydrofracturing are widespread within Lisbon field. Sediment-filled cavities, related to karstification of the exposed Leadville, are present in the upper third of the formation. Pyrobitumen and sulfide minerals appear to coat most crystal faces of the rhombic and saddle dolomites. The fluid inclusion and mineral relationships suggest the following sequence of events: (1) dolomite precipitation, (2) anhydrite deposition, (3) anhydrite dissolution and quartz precipitation, (4) dolomite dissolution and late calcite precipitation, (5) trapping of a mobile oil phase, and (6) formation of bitumen. Fluid inclusions in calcite and dolomite display variable liquid to vapor ratios suggesting reequilibration at elevated temperatures (50 C). Fluid salinities exceed 10 weight percent NaCl equivalent. Low ice melting temperatures of quartz- and calcite-hosted inclusions suggest chemically complex Ca-Mg-bearing brines associated with evaporite deposits were responsible for mineral deposition. The overall conclusion from th

  15. Geologic, geochemical, and geographic controls on NORM in produced water from Texas oil, gas, and geothermal reservoirs. Final report

    SciTech Connect (OSTI)

    Fisher, R.

    1995-08-01T23:59:59.000Z

    Water from Texas oil, gas, and geothermal wells contains natural radioactivity that ranges from several hundred to several thousand Picocuries per liter (pCi/L). This natural radioactivity in produced fluids and the scale that forms in producing and processing equipment can lead to increased concerns for worker safety and additional costs for handling and disposing of water and scale. Naturally occurring radioactive materials (NORM) in oil and gas operations are mainly caused by concentrations of radium-226 ({sup 226}Ra) and radium-228 ({sup 228}Ra), daughter products of uranium-238 ({sup 238}U) and thorium-232 ({sup 232}Th), respectively, in barite scale. We examined (1) the geographic distribution of high NORM levels in oil-producing and gas-processing equipment, (2) geologic controls on uranium (U), thorium (Th), and radium (Ra) in sedimentary basins and reservoirs, (3) mineralogy of NORM scale, (4) chemical variability and potential to form barite scale in Texas formation waters, (5) Ra activity in Texas formation waters, and (6) geochemical controls on Ra isotopes in formation water and barite scale to explore natural controls on radioactivity. Our approach combined extensive compilations of published data, collection and analyses of new water samples and scale material, and geochemical modeling of scale Precipitation and Ra incorporation in barite.

  16. Hydrological and geochemical investigations of selenium behavior at Kesterson Reservoir

    SciTech Connect (OSTI)

    Benson, S.M.; Tokunaga, T.K.; Zawislanski, P.; Yee, A.W.; Daggett, J.S.; Oldfather, J.M.; Tsao, L.; Johannis, P.W.

    1990-10-01T23:59:59.000Z

    From 1985 to the present we have studied the behavior of selenium in various habitats and environments at Kesterson reservoir, shifting emphasis as remedial actions altered the physical setting. Investigations have evaluated the efficacy of several remedial alternatives, from innovative techniques relying on the complex geochemical behavior of selenium alternatives, from innovative techniques relying on the complex geochemical behavior of selenium in aquatic environments to conventional excavation schemes. Results of these studies supported two cost-effective remedial measures; drain water deliveries were terminated in 1986 and, in 1988, 1 million cubic yards of soil were imported and used to fill the low lying areas of the former Kesterson Reservoir. To date, these two actions appear to have eliminated the aquatic habitat that caused waterfowl death and deformity at Kesterson from the early 1980's to 1987. Biological, surface water and groundwater monitoring data collected by the USBR indicate that Kesterson is now a much safer environment than in past years when drainage water containing 300{mu}g/l of selenium was delivered to the Reservoir. The continued presence of a large inventory of selenium within the upper portions of unfilled areas of Kesterson Reservoir and immediately below the fill material requires that a continued awareness of the status of this inventory be maintained and improved upon. 83 refs., 130 figs., 19 tabs.

  17. MULTI-SCALE ANALYSIS OF MULTIPARAMETER GEOPHYSICAL AND GEOCHEMICAL DATA FROM

    E-Print Network [OSTI]

    Williams-Jones, Glyn

    MULTI-SCALE ANALYSIS OF MULTIPARAMETER GEOPHYSICAL AND GEOCHEMICAL DATA FROM ACTIVE VOLCANIC Name: MAURI Guillaume Degree: PhD of Science Title of Thesis: Multi-scale analysis of multiparameter geophysical and geochemical data from active volcanic systems Examining Committee: Chair: Dr John Clague

  18. Geochemical and Isotopic Interpretations of Groundwater Flow in the Oasis Valley Flow System, Southern Nevada

    SciTech Connect (OSTI)

    J.M. Thomas; F.C. Benedict, Jr.; T.P. Rose; R.L. Hershey; J.B. Paces; Z.E. Peterman; I.M. Farnham; K.H. Johannesson; A.K. Singh; K.J. Stetzenbach; G.B. Hudson; J.M. Kenneally; G.F. Eaton; D.K. Smith

    2003-01-08T23:59:59.000Z

    This report summarizes the findings of a geochemical investigation of the Pahute Mesa-Oasis Valley groundwater flow system in southwestern Nevada. It is intended to provide geochemical data and interpretations in support of flow and contaminant transport modeling for the Western and Central Pahute Mesa Corrective Action Units.

  19. Geochemical responses in peat groundwater over Attawapiskat kimberlites, James Bay Lowlands, Canada and their application to

    E-Print Network [OSTI]

    Geochemical responses in peat groundwater over Attawapiskat kimberlites, James Bay Lowlands, Canada.sader@mmg.com) ABSTRACT: Peat groundwater compositions at depths of 0.4 and 1.1 m below ground surface in the Attawapiskat on hydrogeological measurements and variations in peat groundwater geochemical parameters (pH and EC are high

  20. Surface and Subsurface Geochemical Monitoring of an EOR-CO2 Field: Buracica, Brazil

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Surface and Subsurface Geochemical Monitoring of an EOR-CO2 Field: Buracica, Brazil C. Magnier1, V Monitoring of an EOR-CO2 Field: Buracica, Brazil -- This paper presents a surface and subsurface geochemical survey of the Buracica EOR-CO2 field onshore Brazil. We adopted a methodology coupling the stable

  1. Geophysical Exploration (Montana)

    Broader source: Energy.gov [DOE]

    An exploration permit is required for any entity conducting geophysical exploration within the state of Montana. Such entities are also required to follow rules adopted by the Board of Oil and Gas...

  2. Oil and Gas Exploration

    E-Print Network [OSTI]

    Tingley, Joseph V.

    Metals Industrial Minerals Oil and Gas Geothermal Exploration Development Mining Processing Nevada, oil and gas, and geothermal activities and accomplishments in Nevada: production statistics, exploration and development including drilling for petroleum and geothermal resources, discoveries of ore

  3. The hydrogeologic-geochemical model of Cerro Prieto revisited

    SciTech Connect (OSTI)

    Lippmann, M.J.; Halfman, S.E.; Truesdell, A.H.; Manon M., A.

    1989-01-01T23:59:59.000Z

    As the exploitation of the Cerro Prieto, Mexico, geothermal field continues, there is increasing evidence that the hydrogeologic model developed by Halfman et al. (1984, 1986) presents the basic features controlling the movement of geothermal fluids in the system. At the present time the total installed capacity at Cerro Prieto is 620 MWe requiring the production of more than 10,500 tonnes/hr of a brine-steam mixture. This significant rate of fluid production has resulted in changes in reservoir thermodynamic conditions and in the chemistry of the produced fluids. After reviewing the hydrogeologic-geochemical model of Cerro Prieto, some of the changes observed in the field due to its exploitation are discussed and interpreted on the basis of the model. 21 refs., 11 figs., 1 tab.

  4. Microbiological and Geochemical Heterogeneity in an In Situ

    E-Print Network [OSTI]

    Uranium Bioremediation; Field Site; Helen A. Vrionis; Robert T. Anderson; Irene Ortiz-bernad; Kathleen R. O’neill; Philip E. Long; Derek R. Lovley

    2005-01-01T23:59:59.000Z

    The geochemistry and microbiology of a uranium-contaminated subsurface environment that had undergone two seasons of acetate addition to stimulate microbial U(VI) reduction was examined. There were distinct horizontal and vertical geochemical gradients that could be attributed in large part to the manner in which acetate was distributed in the aquifer, with more reduction of Fe(III) and sulfate occurring at greater depths and closer to the point of acetate injection. Clone libraries of 16S rRNA genes derived from sediments and groundwater indicated an enrichment of sulfate-reducing bacteria in the order Desulfobacterales in sediment and groundwater samples. These samples were collected nearest the injection gallery where microbially reducible Fe(III) oxides were highly depleted, groundwater sulfate concentrations were low, and increases in acid volatile sulfide were observed in the sediment. Further down-gradient, metal-reducing conditions were present as indicated by intermediate Fe(II)/Fe(total) ratios, lower acid volatile sulfide values, and increased abundance of 16S rRNA gene sequences belonging to the dissimilatory Fe(III)- and U(VI)-reducing family Geobacteraceae. Maximal Fe(III) and U(VI) reduction correlated with maximal recovery of Geobacteraceae 16S rRNA gene sequences in both groundwater and sediment; however, the sites at which these maxima occurred were spatially separated within the aquifer. The substantial microbial and geochemical heterogeneity at this site demonstrates that attempts should be made to deliver acetate in a more uniform manner and that closely

  5. Digital Solar Explorer Introduction

    E-Print Network [OSTI]

    Zanibbi, Richard

    Digital Solar Explorer Introduction Description Content Design Physical Interaction An element of interactivity is added to the Digital Solar Explorer exhibit through the use of a controller. Simple, intuitive the learning process, which is the number one goal of the Digital Solar Explorer exhibit. Essentially, the user

  6. Geothermal Exploration At Akutan, Alaska- Favorable Indications...

    Open Energy Info (EERE)

    program included practical access assessments, a geologic reconnaissance field study, soil and soil gas geochemical surveys, a satellite remote sensing study, a review of...

  7. The dynamics of oceanic transform faults : constraints from geophysical, geochemical, and geodynamical modeling

    E-Print Network [OSTI]

    Gregg, Patricia Michelle Marie

    2008-01-01T23:59:59.000Z

    Segmentation and crustal accretion at oceanic transform fault systems are investigated through a combination of geophysical data analysis and geodynamical and geochemical modeling. Chapter 1 examines the effect of fault ...

  8. Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?

    E-Print Network [OSTI]

    Kurapov, Alexander

    Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific] The paleoceanographic recording fidelity of pelagic sediments is limited by chemical diagenesis and physical mixing (bioturbation and horizontal sediment transport). Diagenesis and bioturbation are relatively well

  9. A Geological and Hydro-Geochemical Study of the Animas Geothermal...

    Open Energy Info (EERE)

    Hydro-Geochemical Study of the Animas Geothermal Area, Hidalgo County, New Mexico Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: A Geological...

  10. Migratory patterns of American shad (Alosa sapidissima) revealed by natural geochemical tags in otoliths

    E-Print Network [OSTI]

    Walther, Benjamin (Benjamin Dwaine)

    2007-01-01T23:59:59.000Z

    Geochemical signatures in the otoliths of diadromous fishes may allow for retrospective analyses of natal origins. In an assessment of river-specific signatures in American shad (Alosa sapidissima), an anadromous clupeid ...

  11. Geochemical Behaviour of S, Cl and Fe in Silicate Melts/Glasses...

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

    Geochemical Behaviour of S, Cl and Fe in Silicate MeltsGlasses Simulating Natural Magmas Monday, March 26, 2012 - 11:00am SSRL Conference Room 137-322 G. Giuli, R. Alonso-Mori, E....

  12. UPb and geochemical evidence for a Cryogenian magmatic arc in central Novaya Zemlya, Arctic Russia

    E-Print Network [OSTI]

    Svensen, Henrik

    U­Pb and geochemical evidence for a Cryogenian magmatic arc in central Novaya Zemlya, Arctic Russia-0349 Oslo, Norway Introduction The High Arctic of Scandinavia and Russia consists of a collage

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

    E-Print Network [OSTI]

    Huang, Shichun

    2005-01-01T23:59:59.000Z

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

  14. Roadmap for Venus Exploration Roadmap for Venus Exploration

    E-Print Network [OSTI]

    Rathbun, Julie A.

    Roadmap for Venus Exploration May 2014 #12;ii Roadmap for Venus Exploration At the VEXAG meeting in November 2013, it was resolved and Investigations for Venus Exploration (GOI), (2) develop a Roadmap for Venus exploration

  15. Microbiological and geochemical characterization of fluvially deposited sulfidic mine tailings

    SciTech Connect (OSTI)

    Wielinga, B.; Lucy, J.K.; Moore, J.N.; Seastone, O.F.; Gannon, J.E. [Univ. of Montana, Missoula, MT (United States)

    1999-04-01T23:59:59.000Z

    The fluvial deposition of mine tailings generated from historic mining operations near Butte, Montana, has resulted in substantial surface and shallow groundwater contamination along Silver Bow Creek. Biogeochemical processes in the sediment and underlying hyporheic zone were studied in an attempt to characterize interactions consequential to heavy-metal contamination of shallow groundwater. Sediment cores were extracted and fractionated based on sediment stratification. Subsamples of each fraction were assayed for culturable heterotrophic microbiota, specific microbial guilds involved in metal redox transformations, and both aqueous- and solid-phase geochemistry. Populations of cultivable Fe(III)-reducing bacteria were most prominent in the anoxic, circumneutral pH regions associated with a ferricrete layer or in an oxic zone high in organic carbon and soluble iron. Sulfur- and iron-oxidizing bacteria were distributed in discrete zones throughout the tailings and were often recovered from sections at and below the anoxic groundwater interface. Sulfate-reducing bacteria were also widely distributed in the cores and often occurred in zones overlapping iron and sulfur oxidizers. Sulfate-reducing bacteria were consistently recovered from oxic zones that contained high concentrations of metals in the oxidizable fraction. Altogether, these results suggest a highly varied and complex microbial ecology within a very heterogeneous geochemical environment. Such physical and biological heterogeneity has often been overlooked when remediation strategies for metal contaminated environments are formulated.

  16. MINTEQ2 geochemical code: provisionary organic data base

    SciTech Connect (OSTI)

    Morrey, J.R.; Krupka, K.M.; Dove, F.H.

    1985-10-01T23:59:59.000Z

    Organic components in aqueous radioactive chemical sources, surface waters, and ground waters could substantially alter the mobility of radioactive and other important nonradioactive elements released from a defense waste disposal system. It is therefore important to be able to predict, as accurately as possible, the effects of selected organic components on the solubilities of radionuclides and important nonradioactive elements. The geochemical code MINTEQ2 can be used to assess solubilities provided that appropriate thermochemical data for organic and inorganic aqueous species and solids are available for its use. The code accepts an assemblage of gaseous and solid phases in contact with an aqueous phase and calculates the thermochemical equilibrium between these phases. Unlike typical hydrologic flow and transport codes where the data base is entirely site specific (i.e., parameters particular to the specific site), MINTEQ2 requires an additional generic thermochemical data base. This report discusses the addition of provisionary organic reactions and associated equilibrium constants to the generic data base that can be used by MINTEQ2 in scoping calculations or preliminary performance assessments.

  17. Exploration for heavy crude oil and natural bitumen

    SciTech Connect (OSTI)

    Meyer, R.F. (U.S. Geological Survey (US))

    1987-01-01T23:59:59.000Z

    This book discusses heavy oil and tar sand reserves which are enormous. Focus in on regional resources worldwide; characterization, maturation, and degradation; geological environments and migration; exploration methods; exploration histories; and recovery.

  18. Geochemical Fingerprinting of Coltan Ores by Machine Learning on Uneven Datasets

    SciTech Connect (OSTI)

    Savu-Krohn, Christian, E-mail: christian.savu-krohn@unileoben.ac.at; Rantitsch, Gerd, E-mail: gerd.rantitsch@unileoben.ac.at [Montanuniversitaet Leoben, Department of Applied Geosciences and Geophysics (Austria); Auer, Peter, E-mail: auer@unileoben.ac.at [Chair for Information Technology, Montanuniversitaet Leoben (Austria); Melcher, Frank, E-mail: frank.melcher@bgr.de; Graupner, Torsten, E-mail: torsten.graupner@bgr.de [Federal Institute for Geosciences and Natural Resources (Germany)

    2011-09-15T23:59:59.000Z

    Two modern machine learning techniques, Linear Programming Boosting (LPBoost) and Support Vector Machines (SVMs), are introduced and applied to a geochemical dataset of niobium-tantalum ('coltan') ores from Central Africa to demonstrate how such information may be used to distinguish ore provenance, i.e., place of origin. The compositional data used include uni- and multivariate outliers and elemental distributions are not described by parametric frequency distribution functions. The 'soft margin' techniques of LPBoost and SVMs can be applied to such data. Optimization of their learning parameters results in an average accuracy of up to c. 92%, if spot measurements are assessed to estimate the provenance of ore samples originating from two geographically defined source areas. A parameterized performance measure, together with common methods for its optimization, was evaluated to account for the presence of uneven datasets. Optimization of the classification function threshold improves the performance, as class importance is shifted towards one of those classes. For this dataset, the average performance of the SVMs is significantly better compared to that of LPBoost.

  19. Exploring the Geochemical Fingerprints of an Oceanic Anoxic Event During the Late Cretaceous: the Global and Biological Implications

    E-Print Network [OSTI]

    Owens, Jeremiah David

    2013-01-01T23:59:59.000Z

    Station, TX, pp. 1–23. Bruland, K.W. , Orians, K.J. , Cowen,G.J. , Cutter, G.A. , Bruland, K.W. , 1997. The response ofLetters 309, 77–88. Bruland, K.W. , Rue, E.L. , Smith,

  20. Exploration Best Practices

    Broader source: Energy.gov [DOE]

    The purpose of this project is to provide an overview of currentt geoth thermall explloratiti on bbestt practi tices andd a baseline values for exploration (both non-drilling and drilling) success rates in the U.S.

  1. Alum Innovative Exploration

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project objectives: Reduce the high level of risk during the early stages of geothermal project development by conducting a multi-faceted and innovative exploration and drilling program at Alum. Determine the combination of techniques that are most useful and cost-effective in identifying the geothermal resource through a detailed, post-project evaluation of the exploration and drilling program.

  2. HYDROGEOCHEM: A coupled model of HYDROlogic transport and GEOCHEMical equilibria in reactive multicomponent systems

    SciTech Connect (OSTI)

    Yeh, G.T.; Tripathi, V.S.

    1990-11-01T23:59:59.000Z

    This report presents the development of a hydrogeochemical transport model for multicomponent systems. The model is designed for applications to proper hydrological setting, accommodation of complete suite of geochemical equilibrium processes, easy extension to deal with chemical kinetics, and least constraints of computer resources. The hydrological environment to which the model can be applied is the heterogeneous, anisotropic, saturated-unsaturated subsurface media under either transient or steady state flow conditions. The geochemical equilibrium processes included in the model are aqueous complexation, adsorption-desorption, ion exchange, precipitation-dissolution, redox, and acid-base reactions. To achieve the inclusion of the full complement of these geochemical processes, total analytical concentrations of all chemical components are chosen as the primary dependent variables in the hydrological transport equations. Attendant benefits of this choice are to make the extension of the model to deal with kinetics of adsorption-desorption, ion exchange, precipitation-dissolution, and redox relatively easy. To make the negative concentrations during the iteration between the hydrological transport and geochemical equilibrium least likely, an implicit form of transport equations are proposed. To alleviate severe constraints of computer resources in terms of central processing unit (CPU) time and CPU memory, various optional numerical schemes are incorporated in the model. The model consists of a hydrological transport module and geochemical equilibrium module. Both modules were thoroughly tested in code consistency and were found to yield plausible results. The model is verified with ten examples. 79 refs., 21 figs., 17 tabs.

  3. How to explore new business models for technological innovations

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    How to explore new business models for technological innovations Valérie Chanal Grenoble University also involved business model innovation. Exploration of new business models is however particularly to target. This article proposes a scenario-based method for exploring business models for technological

  4. Cooperative Exploration under Communication Constraints

    E-Print Network [OSTI]

    How, Jonathan P.

    process has not been fully characterized. Existing exploration algorithms do not realistically modelCooperative Exploration under Communication Constraints by Emily M. Craparo Submitted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . David Darmofal Chairman, Department Committee on Graduate Students #12;2 #12;Cooperative Exploration

  5. Innovative Exploration Technologies Subprogram Overview

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

    * Gathering data from the projects - Analyzing what works and what doesn't * Expand resource assessment and NGDS * Exploration best practices study * Baseline exploration...

  6. Exploration Incentive Tax Credit (Montana)

    Broader source: Energy.gov [DOE]

    The Mineral and Coal Exploration Incentive Tax Credit provides tax incentives to entities conducting exploration for minerals and coal. Expenditures related to the following activities are eligible...

  7. Exploration for Uranium Ore (Virginia)

    Broader source: Energy.gov [DOE]

    This legislation describes permitting procedures and requirements for exploration activities. For the purpose of this legislation, exploration is defined as the drilling of test holes or...

  8. Exploring Civil and Environmental

    E-Print Network [OSTI]

    Engineers % of Total Architectural, Engineering, and Related Services 135,000 53 Federal, State, and Local1 CEE 100 Exploring Civil and Environmental Engineering #12;CEE 100 Schedule--Winter 2010 https Geotechnical Engineering January 27 Steve Muench Construction Engineering February 3 Greg Miller Structural

  9. Exploring Mars' Climate History

    E-Print Network [OSTI]

    Exploring Mars' Climate History #12;2 Mars Reconnaissance Orbiter ESA Mars Express (NASA: MARSIS by studying the solar wind and other interactions with the Sun. #12;The solar wind is a high-speed stream of electrons and protons released from the Sun. #12;High-energy photons (light) stream constantly from the Sun

  10. Exploring Functional Mellin Transforms

    E-Print Network [OSTI]

    J. LaChapelle

    2015-01-08T23:59:59.000Z

    We define functional Mellin transforms within a scheme for functional integration proposed in [1]. Functional Mellin transforms can be used to define functional traces, logarithms, and determinants. The associated functional integrals are useful tools for probing function spaces in general and $C^\\ast$-algebras in particular. Several interesting aspects are explored.

  11. Spatial And Temporal Geochemical Trends In The Hydrothermal System Of

    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 Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-g GrantAtlas (PACA Region -SonelgazSunbelt WindAssociation AeH

  12. Property:GeochemReservoirTemp | 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 Home5b9fcbce19 No revisionEnvReviewNonInvasiveExploration Jump to:FieldProcedures JumpGreenButtonID

  13. Geochemical composition and provenance discrimination of coastal sediments around Cheju Island in the southeastern Yellow Sea

    E-Print Network [OSTI]

    Yang, Shouye

    in the southeastern Yellow Sea S.Y. Yanga,b,*, D.I. Lima , H.S. Junga , B.C. Ohc a Marine Environment and Climate Change Laboratory, Korea Ocean Research and Development Institute, Ansan P.O. Box 29, Seoul 425) compositions and geochemical discrimination diagrams were revealed to be useful indices for identifying

  14. Microscale geochemical gradients in Hanford 300 Area sediment biofilms and influence of uranium

    SciTech Connect (OSTI)

    Nguyen, Hung D.; Cao, Bin; Mishra, Bhoopesh; Boyanov, Maxim I.; Kemner, Kenneth M.; Fredrickson, Jim K.; Beyenal, Haluk

    2012-01-01T23:59:59.000Z

    The presence and importance of microenvironments in the subsurface at contaminated sites were suggested by previous geochemical studies. However, no direct quantitative characterization of the geochemical microenvironments had been reported. We quantitatively characterized microscale geochemical gradients (dissolved oxygen (DO), H(2), pH, and redox potential) in Hanford 300A subsurface sediment biofilms. Our results revealed significant differences in geochemical parameters across the sediment biofilm/water interface in the presence and absence of U(VI) under oxic and anoxic conditions. While the pH was relatively constant within the sediment biofilm, the redox potential and the DO and H(2) concentrations were heterogeneous at the microscale (<500-1000 ?m). We found microenvironments with high DO levels (DO hotspots) when the sediment biofilm was exposed to U(VI). On the other hand, we found hotspots (high concentrations) of H(2) under anoxic conditions both in the presence and in the absence of U(VI). The presence of anoxic microenvironments inside the sediment biofilms suggests that U(VI) reduction proceeds under bulk oxic conditions. To test this, we operated our biofilm reactor under air-saturated conditions in the presence of U(VI) and characterized U speciation in the sediment biofilm. U L(III)-edge X-ray absorption spectroscopy (XANES and EXAFS) showed that 80-85% of the U was in the U(IV) valence state.

  15. 22th International Meeting on org. geochem. The fate of organic matter in mangrove sediments

    E-Print Network [OSTI]

    Boyer, Edmond

    22th International Meeting on org. geochem. The fate of organic matter in mangrove sediments and the unvegetated sediments, and various vascular plants specific to these swamps. An elemental, pyrolytic sediments characterised by great changes in the redox conditions. Several specific results have already been

  16. Laghi di Monticchio (Southern Italy, Region Basilicata): genesis of sediments--a geochemical study

    E-Print Network [OSTI]

    Boyer, Edmond

    Laghi di Monticchio (Southern Italy, Region Basilicata): genesis of sediments--a geochemical study and Sediments, Telegrafenberg C328, 14473 Potsdam, Germany (2) Institut des Sciences de la Terre d'Orléans (ISTO Cedex 2, France Abstract The sedimentation record of Lago Grande di Monticchio (LGM) is one of the most

  17. Discrimination of geochemical compositions between the Changjiang and the Huanghe sediments and

    E-Print Network [OSTI]

    Yang, Shouye

    Discrimination of geochemical compositions between the Changjiang and the Huanghe sediments and its application for the identi¢cation of sediment source in the Jiangsu coastal plain, China S.Y. Yang a;b;� , C 2002 Abstract Concentrations of 25 elements in the fine-grained fraction ( 6 63 Wm) of bottom sediments

  18. Continental Shelf Research 26 (2006) 1524 Geochemical compositions of river and shelf sediments in the

    E-Print Network [OSTI]

    Yang, Shouye

    Continental Shelf Research 26 (2006) 15­24 Geochemical compositions of river and shelf sediments in the Yellow Sea: Grain-size normalization and sediment provenance D.I. Lima,�, H.S. Jungb , J.Y. Choic , S 14 November 2005 Abstract The geochemistry of sediment samples from Korean and Chinese rivers

  19. Measuring prehistoric mobility strategies based on obsidian geochemical and technological signatures in the Owens Valley, California

    E-Print Network [OSTI]

    Measuring prehistoric mobility strategies based on obsidian geochemical and technological; Lithic technology; LA-ICP-MS; Mobility strategies; Owens Valley 1. Introduction Obsidian studies compare the organization of obsidian flaked stone technologies in two different time periods at CA-INY-30

  20. Assessing XRF for the geochemical characterization of radiolarian chert artifacts from northeastern North America

    E-Print Network [OSTI]

    Long, Bernard

    Assessing XRF for the geochemical characterization of radiolarian chert artifacts from northeastern 2012 Keywords: Chert XRF Geochemistry Non-destructive Weathering Quarries Quebec a b s t r a c-ray fluorescence (ED-XRF) as a first-order technique to determine chert whole-rock geochemistry for archaeological

  1. Geochemical assessment of nuclear waste isolation. Report of activities during fiscal year 1982

    SciTech Connect (OSTI)

    Not Available

    1983-07-01T23:59:59.000Z

    The status of the following investigations is reported: canister/overpack-backfill chemical interactions and mechanisms; backfill and near-field host rock chemical interactions mechanisms; far-field host rock geochemical interactions; verification and improvement of predictive algorithms for radionuclide migration; and geologic systems as analogues for long-term radioactive waste isolation.

  2. Geochemical evidence for possible natural migration of Marcellus Formation brine to

    E-Print Network [OSTI]

    as the potential for contamination from toxic substances in hydraulic fracturing fluid and/or pro- duced brinesGeochemical evidence for possible natural migration of Marcellus Formation brine to shallow of stray gas, metal-rich formation brines, and hydrau- lic fracturing and/or flowback fluids to drinking

  3. Inferring dispersal and migrations from incomplete geochemical baselines: analysis of population structure

    E-Print Network [OSTI]

    Shima, Jeff

    . 2008). Trace element tags as well as stable iso- topes contained within inert structures, such as fish baseline or reference atlas. Individuals of unknown origin are then assigned to one of the sources in this reference atlas based on their geochemical signature. The identifiability of potential sources is

  4. CAN THE GEOCHEMICAL TOPSOIL ATLAS BE USED TO PREDICT TRACE METAL DEFICIENCY IN CATTLE?

    E-Print Network [OSTI]

    Nottingham, University of

    CAN THE GEOCHEMICAL TOPSOIL ATLAS BE USED TO PREDICT TRACE METAL DEFICIENCY IN CATTLE? By: Emily courtesy LTSN Bioscience. http://bio.ltsn.ac.uk/imagebank/ Just as trace metals are important to humans to the structural stability of molecules and membranes. For these reasons, incorrect trace metal levels can

  5. Organic geochemical evidence for pine tar production in middle Eastern Sweden during the Roman Iron Age

    E-Print Network [OSTI]

    Organic geochemical evidence for pine tar production in middle Eastern Sweden during the Roman Iron Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden b Upplands muse´et, St: Eriks gra¨nd 6, SE-753 10 Uppsala, Sweden Received 21 September 2004; received in revised form 15 June 2005; accepted 21

  6. Geochemical Constraints on the Origin of a Shallow Ash Occurrence: in the Mahanadi Basin, offshore India

    E-Print Network [OSTI]

    New Hampshire, University of

    Geochemical Constraints on the Origin of a Shallow Ash Occurrence: in the Mahanadi Basin, offshore sampled in the continental margins offshore India (Fig 1). A volcanic ash layer was recovered below seafloor Surrounding Sediments: Grey sediment in A is a nannofossil and plant debris bearing clay

  7. A GEOCHEMICAL MODULE FOR "AMDTreat" TO COMPUTE CAUSTIC QUANTITY, EFFLUENT QUALITY, AND SLUDGE VOLUME1

    E-Print Network [OSTI]

    1413 A GEOCHEMICAL MODULE FOR "AMDTreat" TO COMPUTE CAUSTIC QUANTITY, EFFLUENT QUALITY, AND SLUDGE with the quantities of chemical added and sludge produced. The pH and metals concentrations do not change linearlyH and the corresponding effluent composition and sludge volume can not be accurately determined without empirical

  8. Large sedimentary aquifer system and sustainable management: investigations of hydrogeological and geochemical variations in

    E-Print Network [OSTI]

    Boyer, Edmond

    is roughly half a meter per year. Furthermore, in the south part, around two sites of gas storage and geochemical variations in Eocene sand aquifer, south western France E. MALCUIT 1 , Ph. NEGREL 2 , E. PETELET-GIRAUD 3 , P. DURST 1 1 BRGM, Regional Geological Survey Service Bordeaux, France, 2 BRGM, Metrology

  9. The impact of local geochemical variability on quantifying hillslope soil production and chemical weathering

    E-Print Network [OSTI]

    Heimsath, Arjun M.

    the physical and chemical processes of soil production and erosion and revisit three granitic study areas on the hillslope-scale physical and chemical soil production and erosion processes. To explain why understandingThe impact of local geochemical variability on quantifying hillslope soil production and chemical

  10. Methane-related authigenic carbonates from the Black Sea: geochemical characterisation and relation to seeping fluids

    E-Print Network [OSTI]

    Mazzini, Adriano

    Methane-related authigenic carbonates from the Black Sea: geochemical characterisation and relation of carbon derived from the anaerobic oxidation of methane (AOM), the oxidation of organic matter and from sea water. Methane is the dominant component among other hydrocarbon gases in these sediments. Its

  11. Geochemical anomalies in soil and sandstone overlying the Phoenix uranium deposit, Athabasca Basin Natural Resources

    E-Print Network [OSTI]

    Co Mo Ni UU Geochemical anomalies in soil and sandstone overlying the Phoenix uranium deposit, Athabasca Basin Natural Resources Canada Geological Survey of Canada with Provincial and Territorial Collaboration Introduction The Wheeler River Property, host of Denison Mine's Phoenix uranium deposit

  12. Paper #194973 GEOCHEMICAL CHARACTERIZATION OF THE RESERVOIR HOSTING SHALE-GAS AND OIL in

    E-Print Network [OSTI]

    Paper #194973 GEOCHEMICAL CHARACTERIZATION OF THE RESERVOIR HOSTING SHALE-GAS AND OIL a reservoir for shale-gas and oil. We examined organic-rich black shale, known as Macasty shale, of Upper SHALE-GAS AND OIL in THE SUBSURFACE OF ANTICOSTI ISLAND, CANADA Key Words: Provenance, Anticosti Island

  13. Alteration And Geochemical Zoning In Bodie Bluff, Bodie Mining...

    Open Energy Info (EERE)

    examined and chemically analyzed for trace elements by emission spectrographic and atomic absorption methods. Sixty-five samples were analyzed for major elements by X-ray...

  14. Exploring new energy alternatives.

    SciTech Connect (OSTI)

    LePoire, D.J. (Environmental Science Division)

    2011-09-01T23:59:59.000Z

    What is most likely to satisfy our energy needs in the future - wind farms and photovoltaic arrays, or something yet to be invented? Options for the world's energy future may include surprises, thanks to innovative research under way around the world. The article focuses on the energy sources alternatives in the U.S. It explores innovations for energy sources such as wind farms, solar thermal concentrators, solar cells, and geothermal energy production. It states that the attainment of energy efficiency through conversation or improved technology allows to extract more applied energy. It points out that techniques are being explored to expand the possible fuel materials to includes other types of uranium and thorium. Furthermore, it discusses the capability of nanotechnology in offering a tool which could help create designs that convert energy more efficiently.

  15. EXPLORATION Actual Estimate

    E-Print Network [OSTI]

    FY 2015 FY 2016 FY 2017 FY 2013 President's Budget Request 3,821.2 3,712.8 3,932.8 4,076.5 4,076.5 4 Estimate Budget Authority (in $ millions) FY 2011 FY 2012 FY 2013 FY 2014 FY 2015 FY 2016 FY 2017 FY 2013EXPLORATION EXP-1 Actual Estimate Budget Authority (in $ millions) FY 2011 FY 2012 FY 2013 FY 2014

  16. Exploring colourful holographic superconductors

    E-Print Network [OSTI]

    Kasper Peeters; Jonathan Powell; Marija Zamaklar

    2009-07-09T23:59:59.000Z

    We explore a class of holographic superconductors built using non-abelian condensates on probe branes in conformal and non-conformal backgrounds. These are shown to exhibit behaviour of the specific heat which resembles that of heavy fermion compounds in the superconducting phase. Instead of showing BCS-like exponential behaviour, the specific heat is polynomial in the temperature. It exhibits a jump at the critical temperature, in agreement with real-world superconductors. We also analyse the behaviour of the energy gap and the AC and DC conductivities, and find that the systems can be either semi-conducting or metallic just above the critical temperature.

  17. Switzerland exploration may resume

    SciTech Connect (OSTI)

    Lahusen, P.H. [SEAG, Geneva (Switzerland)

    1997-06-23T23:59:59.000Z

    Since 1912, 35 wells have been drilled for oil and gas, 19 of them in the last 38 years. Eighty percent of these 19 wells had oil and/or gas shows, but only one was placed on production. The only gas discovery, Entlebuch-1, produced about 2.6 bcf of a high quality gas in 10 years. It was abandoned in 1994. This paper discusses why exploration waned. A second look at the data suggests Switzerland has a high potential for gas production.

  18. EXPLORING PROTEIN FOLDING TRAJECTORIES USING GEOMETRIC SPANNERS

    E-Print Network [OSTI]

    Guibas, Leonidas J.

    EXPLORING PROTEIN FOLDING TRAJECTORIES USING GEOMETRIC SPANNERS D. RUSSEL and L. GUIBAS Computer of secondary and tertiary structures as the protein folds. 1 Introduction There has been extensive work understanding of protein folding by studying their ensemble behaviors. Most currently used methods

  19. Revisiting the Tradespace Exploration Paradigm: Structuring the Exploration Process

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Revisiting the Tradespace Exploration Paradigm: Structuring the Exploration Process Adam M. Ross in Tradespace Exploration · Question-guided TSE· Question-guided TSE · Discussion · Conclusion seari.mit.edu © 2010 Massachusetts Institute of Technology 2 #12;Introduction · Early design process is high leverage

  20. INTERNATIONAL SPACE EXPLORATION COORDINATION GROUP

    E-Print Network [OSTI]

    space exploration infrastructure standards facilitating interoperability through an international with relevant existing international working groups/ organisations. · Preparation and Organization of a WS1 INTERNATIONAL SPACE EXPLORATION COORDINATION GROUP WORKPLAN Update following 3rd ISECG Meeting

  1. Innovative Exploration Technologies Subprogram Overview

    Broader source: Energy.gov [DOE]

    This overview of GTP's Innovative Exploration Technologies subprogram was given at the GTP Program Peer Review on May 18, 2010.

  2. Relevance of Massively Distributed Explorations

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    that this exploration process gives a partial and biased view of the real topology, which leads to the idea links) and may be biased by the exploration process (some properties of the obtained map may be induced induced by the exploration process. In order to improve these maps, several re- searchers and groups now

  3. Relevance of Massively Distributed Explorations

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    that this exploration process gives a partial and biased view of the real topology, which leads to the idea links) and may be biased by the exploration process (some properties of the obtained map may be induced induced by the exploration process. In order to improve these maps, several re- searchers and groups no

  4. Polar Explorer References Raold Amundsen

    E-Print Network [OSTI]

    Fabrikant, Sara Irina

    -15, 2003, 1 h 19 min. * National Geographic May 2009, concerning claims of Arctic Ocean oil and gasPolar Explorer References Raold Amundsen My Life as an Explorer, Raold Amundsen The Red Tent.L. Berens [This book includes other historic polar explorers] * National Geographic Jan. 2009 (2 articles

  5. Geochemical and isotopic variations in shallow groundwater in areas of the Fayetteville Shale development, north-central Arkansas q

    E-Print Network [OSTI]

    Jackson, Robert B.

    similar to the brine in the Fayetteville Shale. Nonetheless, no spatial relationship was found between CH4. The integration of multiple geochemical and isoto- pic proxies shows no direct evidence of contamination

  6. Geochemical and isotopic results for groundwater, drainage waters, snowmelt, permafrost, precipitation in Barrow, Alaska (USA) 2012-2013

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

    Wilson, Cathy; Newman, Brent; Heikoop, Jeff

    Data include a large suite of analytes (geochemical and isotopic) for samples collected in Barrow, Alaska (2012-2013). Sample types are indicated, and include soil pore waters, drainage waters, snowmelt, precipitation, and permafrost samples.

  7. Origin of geochemical heterogeneity in the mantle : constraints from volcanism associated with Hawaiian and Kerguelen mantle plumes

    E-Print Network [OSTI]

    Xu, Guangping

    2007-01-01T23:59:59.000Z

    Lavas derived from long-lived mantle plumes provide important information of mantle compositions and the processes that created the geochemical heterogeneity within the mantle. Kerguelen and Hawaii are two long-lived mantle ...

  8. The Extreme Physics Explorer

    E-Print Network [OSTI]

    Martin Elvis

    2006-08-25T23:59:59.000Z

    Some tests of fundamental physics - the equation of state at supra-nuclear densities, the metric in strong gravity, the effect of magnetic fields above the quantum critical value - can only be measured using compact astrophysical objects: neutron stars and black holes. The Extreme Physics Explorer is a modest sized (~500 kg) mission that would carry a high resolution (R ~300) X-ray spectrometer and a sensitive X-ray polarimeter, both with high time resolution (~5 ?s) capability, at the focus of a large area (~5 sq.m), low resolution (HPD~1 arcmin) X-ray mirror. This instrumentation would enable new classes of tests of fundamental physics using neutron stars and black holes as cosmic laboratories.

  9. Geologic and geochemical studies of the New Albany Shale Group (Devonian-Mississippian) in Illinois. Final report

    SciTech Connect (OSTI)

    Bergstrom, R.E.; Shimp, N.F.

    1980-06-30T23:59:59.000Z

    The Illinois State Geological Survey is conducting geological and geochemical investigations to evaluate the potential of New Albany Group shales as a source of hydrocarbons, particularly natural gas. Geological studies include stratigraphy and structure, mineralogic and petrographic characterization; analyses of physical properties; and development of a computer-based resources evaluation system. Geochemical studies include organic carbon content and trace elements; hydrocarbon content and composition; and adsorption/desorption studies of gas through shales. Separate abstracts have been prepared for each task reported.

  10. Geochemical factors affecting radionuclide transport through near and far fields at a Low-Level Waste Disposal Site

    SciTech Connect (OSTI)

    Kaplan, D.I.; Seme, R.J. [Pacific Northwest Lab., Richland, WA (United States); Piepkho, M.G. [Westinghouse Hanford Co., Richland, WA (United States)

    1995-03-01T23:59:59.000Z

    The concentration of low-level waste (LLW) contaminants in groundwater is determined by the amount of contaminant present in the solid waste, rate of release from the waste and surrounding barriers, and a number of geochemical processes including adsorption, desorption, diffusion, precipitation, and dissolution. To accurately predict radionuclide transport through the subsurface, it is essential that the important geochemical processes affecting radionuclide transport be identified and, perhaps more importantly, accurately quantified and described in a mathematically defensible manner.

  11. Hydrological and geochemical monitoring for a CO2 sequestration pilot in a brine formation

    SciTech Connect (OSTI)

    Doughty, Christine; Pruess, Karsten; Benson, Sally M.; Freifeld, Barry M.; Gunter, William D.

    2004-05-17T23:59:59.000Z

    Hydrological and geochemical monitoring are key components of site characterization and CO2 plume monitoring for a pilot test to inject CO2 into a brine-bearing sand of the fluvial-deltaic Frio formation in the upper Texas Gulf Coast. In situ, injected CO2 forms a supercritical phase that has gas-like properties (low density and viscosity) compared to the surrounding brine, while some CO2 dissolves in the brine. The pilot test employs one injection well and one monitor well, with continuous pressure and flow-rate monitoring in both wells, and continuous surface fluid sampling and periodic down-hole fluid sampling from the monitor well. Pre-injection site-characterization includes pump tests with pressure-transient analysis to estimate single-phase flow properties, establish hydraulic connectivity between the wells, determine appropriate boundary conditions, and analyze ambient phase conditions within the formation. Additionally, a pre-injection tracer test furnishes estimates of kinematic porosity and the geometry of flow paths between injection and monitor wells under single-phase conditions. Pre-injection geochemical sampling provides a baseline for subsequent geochemical monitoring and helps determine the optimal tracers to accompany CO2 injection. During CO2 injection, hydrological monitoring enables estimation of two-phase flow properties and helps track the movement of the injected CO2 plume, while geochemical sampling provides direct evidence of the arrival of CO2 and tracers at the monitor well. Furthermore, CO2-charged water acts as a weak acid, and reacts to some extent with the minerals in the aquifer, producing a distinct chemical signature in the water collected at the monitor well. Comparison of breakthrough curves for the single-phase tracer test and the CO2 (and its accompanying tracers) illuminates two-phase flow processes between the supercritical CO2 and native brine, an area of current uncertainty that must be better understood to effectively sequester CO2 in saline aquifers.

  12. Geochemical Data Package for Performance Assessment Calculations Related to the Savannah River Site

    SciTech Connect (OSTI)

    Kaplan, D

    2006-02-28T23:59:59.000Z

    The Savannah River Site disposes of certain types of radioactive waste within subsurface-engineered facilities. One of the tools used to establish the capacity of a given site to safely store radioactive waste (i.e., that a site does not exceed its Waste Acceptance Criteria) is the Performance Assessment (PA). The objective of this document is to provide the geochemical values for the PA calculations. This work is being conducted as part of the on-going maintenance program that permits the PA to periodically update existing calculations when new data becomes available. Because application of values without full understanding of their original purpose may lead to misuse, this document also provides the geochemical conceptual model, approach used for selecting the values, the justification for selecting data, and the assumptions made to assure that the conceptual and numerical geochemical models are reasonably conservative (i.e., reflect conditions that will tend to predict the maximum risk to the hypothetical recipient). The geochemical parameters describe transport processes for 38 elements (>90 radioisotopes) potentially occurring within eight disposal units (Slit Trenches, Engineered Trenches, Low Activity Waste (LAW) Vault, Intermediate Level (ILV) Vaults, TRU-Pad-1, Naval Reactor Waste Pads, Components-in-Grout Trenches, and Saltstone Facility). This work builds upon well-documented work from previous PA calculations (McDowell-Boyer et al. 2000). The new geochemical concepts introduced in this data package are: (1) In the past, solubility products were used only in a few conditions (element existing in a specific environmental setting). This has been expanded to >100 conditions. (2) Radionuclide chemistry in cementitious environments is described through the use of both the Kd and apparent solubility concentration limit. Furthermore, the solid phase is assumed to age during the assessment period (thousands of years), resulting in three main types of controlling solid phases, each possessing a unique set of radionuclide sorption parameters (Kd and solubility concentration limit). (3) A large amount of recent site-specific sorption research has been conducted since the last PA (McDowell-Boyer et al. 2000). These new data have replaced previous Kd values derived from literature values, thus reducing uncertainty and improving accuracy. Finally, because this document will be used by future PA calculations and external acceptance of the document will eventually be required, this document was extensively reviewed. The review process, including the internal review, site review, and external review process is described.

  13. Thermodynamic Data for Geochemical Modeling of Carbonate Reactions Associated with CO2 Sequestration – Literature Review

    SciTech Connect (OSTI)

    Krupka, Kenneth M.; Cantrell, Kirk J.; McGrail, B. Peter

    2010-09-28T23:59:59.000Z

    Permanent storage of anthropogenic CO2 in deep geologic formations is being considered as a means to reduce the concentration of atmospheric CO2 and thus its contribution to global climate change. To ensure safe and effective geologic sequestration, numerous studies have been completed of the extent to which the CO2 migrates within geologic formations and what physical and geochemical changes occur in these formations when CO2 is injected. Sophisticated, computerized reservoir simulations are used as part of field site and laboratory CO2 sequestration studies. These simulations use coupled multiphase flow-reactive chemical transport models and/or standalone (i.e., no coupled fluid transport) geochemical models to calculate gas solubility, aqueous complexation, reduction/oxidation (redox), and/or mineral solubility reactions related to CO2 injection and sequestration. Thermodynamic data are critical inputs to modeling geochemical processes. The adequacy of thermodynamic data for carbonate compounds has been identified as an important data requirement for the successful application of these geochemical reaction models to CO2 sequestration. A review of thermodynamic data for CO2 gas and carbonate aqueous species and minerals present in published data compilations and databases used in geochemical reaction models was therefore completed. Published studies that describe mineralogical analyses from CO2 sequestration field and natural analogue sites and laboratory studies were also reviewed to identify specific carbonate minerals that are important to CO2 sequestration reactions and therefore require thermodynamic data. The results of the literature review indicated that an extensive thermodynamic database exists for CO2 and CH4 gases, carbonate aqueous species, and carbonate minerals. Values of ?fG298° and/or log Kr,298° are available for essentially all of these compounds. However, log Kr,T° or heat capacity values at temperatures above 298 K exist for less than approximately one-third of these compounds. Because the temperatures of host formations that will be used for CO2 injection and sequestration will be at tempera¬tures in the range of 50ºC to 100ºC or greater, the lack of high temperature thermodynamic values for key carbonate compounds especially minerals, will impact the accuracy of some modeling calculations.

  14. Exploration for heavy crude oil and natural bitumen

    SciTech Connect (OSTI)

    Not Available

    1989-01-01T23:59:59.000Z

    Heavy oil and tar sand reserves are enormous, and this 700-page volume breaks the topic down into six emphasis areas of: regional resources worldwide; characterization, maturation, and degradation; geological environments and migration; exploration methods; exploration histories; and recovery. An appendix presents a guidebook to Santa Maria, Cuyama, Taft-McKettrick, and Edna oil districts, Coast Ranges, California.

  15. Hydrological, geochemical, and ecological characterization of Kesterson Reservoir

    SciTech Connect (OSTI)

    Not Available

    1990-06-01T23:59:59.000Z

    This report describes Kesterson Reservoir related research activities carried out under a cooperative program between Lawrence Berkeley Laboratory and the Division of Agriculture and Natural Resources at the University of California during FY89. The primary objectives of these investigations are: Predict the extent, probability of the occurrence, and selenium concentrations in surface water of temporary wetland habitat at Kesterson; assess rates and direction of migration of the drainage water plume that seeped into the aquifer under Kesterson; monitor and predict changes in quantity and speciation of selenium in surface soils and vadose zone pore-waters; and develop a comprehensive strategy through soil, water, and vegetation management to safely dissipate the high concentrations of selenium accumulated in Kesterson soils. This report provides an up-date on progress made in each of these areas. Chapter 2 describes results of recent investigations of water table fluctuations and plume migration. Chapter 3 describes results of ongoing monitoring of soil water selenium concentrations and evaporative accumulation of selenium at the soil surface. Chapter 4 describes early results from the soil, water, and vegetation management field trials as well as supporting laboratory and theoretical studies. In Chapter 5, new analytical methods for selenium speciation are described and quality assurance/quality control statistics for selenium and boron are provided. 110 refs., 138 figs., 62 tabs.

  16. Advances In The Past 20 Years- Geochemistry In Geothermal Exploration...

    Open Energy Info (EERE)

    geochemical reaction models into numerical reservoir simulation; scaling and wellflow chemistry modification; new reservoir tracers and flow-line tracer enthalpy technology....

  17. Blind Geothermal System Exploration in Active Volcanic Environments...

    Open Energy Info (EERE)

    and Geochemical Surveys in Overt and Subtle Volcanic Systems, Hawaii and Maui Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title...

  18. Radioisotopes: Energy for Space Exploration

    ScienceCinema (OSTI)

    Carpenter, Bob; Green, James; Bechtel, Ryan

    2013-05-29T23:59:59.000Z

    Through a strong partnership between the Energy Department's office of Nuclear Energy and NASA, Radioisotope Power Systems have been providing the energy for deep space exploration.

  19. Exploring Dark Energy with SNAP

    E-Print Network [OSTI]

    Aldering, G.

    2009-01-01T23:59:59.000Z

    weak lensing survey. The planned dark energy program forthe Joint Dark Energy Mission (JDEM) will produce a treasureLBNL- 58276 Exploring Dark Energy with SNAP G. Aldering

  20. GEOELECTROMAGNETIC EXPLORATION FOR NATURAL RESOURCES: MODELS, CASE STUDIES AND CHALLENGES

    E-Print Network [OSTI]

    Meju, Max

    , model development is restricted to groundwater, geothermal and hydrocarbon resources, metallic oreGEOELECTROMAGNETIC EXPLORATION FOR NATURAL RESOURCES: MODELS, CASE STUDIES AND CHALLENGES MAXWELL A called geoelectromagnetic) methods as applied in the search for natural resources. First, the paper

  1. Walter Baker Chocolate Factory : an adaptive reuse exploration

    E-Print Network [OSTI]

    Castro, Fernando D

    1981-01-01T23:59:59.000Z

    This thesis explores the processes of building evolution and the methods in which old buildings are recycled for continued use. Reuse is the process in which a building's life is extended through a preservation or alteration ...

  2. SURFACE GEOPHYSICAL EXPLORATION - COMPENDIUM DOCUMENT

    SciTech Connect (OSTI)

    RUCKER DF; MYERS DA

    2011-10-04T23:59:59.000Z

    This report documents the evolution of the surface geophysical exploration (SGE) program and highlights some of the most recent successes in imaging conductive targets related to past leaks within and around Hanford's tank farms. While it is noted that the SGE program consists of multiple geophysical techniques designed to (1) locate near surface infrastructure that may interfere with (2) subsurface plume mapping, the report will focus primarily on electrical resistivity acquisition and processing for plume mapping. Due to the interferences from the near surface piping network, tanks, fences, wells, etc., the results of the three-dimensional (3D) reconstruction of electrical resistivity was more representative of metal than the high ionic strength plumes. Since the first deployment, the focus of the SGE program has been to acquire and model the best electrical resistivity data that minimizes the influence of buried metal objects. Toward that goal, two significant advances have occurred: (1) using the infrastructure directly in the acquisition campaign and (2) placement of electrodes beneath the infrastructure. The direct use of infrastructure was successfully demonstrated at T farm by using wells as long electrodes (Rucker et al., 2010, 'Electrical-Resistivity Characterization of an Industrial Site Using Long Electrodes'). While the method was capable of finding targets related to past releases, a loss of vertical resolution was the trade-off. The burying of electrodes below the infrastructure helped to increase the vertical resolution, as long as a sufficient number of electrodes are available for the acquisition campaign.

  3. Revisiting the Tradespace Exploration Paradigm: Structuring the Exploration Process

    E-Print Network [OSTI]

    Ross, Adam Michael

    A number of case applications of tradespace exploration have further extended the types of analyses and knowledge insights that can be gained about tradeoffs between design choices and perceived utility and cost of ...

  4. Rock types, pore types, and hydrocarbon exploration

    SciTech Connect (OSTI)

    Coalson, E.B.; Hartmann, D.J.; Thomas, J.B.

    1985-05-01T23:59:59.000Z

    A proposed exploration-oriented method of classifying porosity in sedimentary rocks is based on microscopic examination cores or cuttings. Factors include geometry, size, abundance, and connectivity of the pores. The porosity classification is predictive of key petrophysical characteristics: porosity-permeability relationships, capillary pressures, and (less certainly) relative permeabilities. For instance, intercrystalline macroporosity typically is associated with high permeability for a given porosity, low capillarity, and favorable relative permeabilities. This is found to be true whether this porosity type occurs in a sucrosic dolomite or in a sandstone with pervasive quartz overgrowths. This predictive method was applied in three Rocky Mountain oil plays. Subtle pore throat traps could be recognized in the J sandstone (Cretaceous) in the Denver basin of Colorado by means of porosity permeability plotting. Variations in hydrocarbon productivity from a Teapot Formation (Cretaceous) field in the Powder River basin of Wyoming were related to porosity types and microfacies; the relationships were applied to exploration. Rock and porosity typing in the Red River Formation (Ordovician) reconciled apparent inconsistencies between drill-stem test, log, and mud-log data from a Williston basin wildcat. The well was reevaluated and completed successfully, resulting in a new field discovery. In each of these three examples, petrophysics was fundamental for proper evaluation of wildcat wells and exploration plays.

  5. Dixie Valley Engineered Geothermal System Exploration Methodology Project, Baseline Conceptual Model Report

    SciTech Connect (OSTI)

    Iovenitti, Joe

    2014-01-02T23:59:59.000Z

    The Engineered Geothermal System (EGS) Exploration Methodology Project is developing an exploration approach for EGS through the integration of geoscientific data. The Project chose the Dixie Valley Geothermal System in Nevada as a field laboratory site for methodology calibration purposes because, in the public domain, it is a highly characterized geothermal system in the Basin and Range with a considerable amount of geoscience and most importantly, well data. The overall project area is 2500km2 with the Calibration Area (Dixie Valley Geothermal Wellfield) being about 170km2. The project was subdivided into five tasks (1) collect and assess the existing public domain geoscience data; (2) design and populate a GIS database; (3) develop a baseline (existing data) geothermal conceptual model, evaluate geostatistical relationships, and generate baseline, coupled EGS favorability/trust maps from +1km above sea level (asl) to -4km asl for the Calibration Area at 0.5km intervals to identify EGS drilling targets at a scale of 5km x 5km; (4) collect new geophysical and geochemical data, and (5) repeat Task 3 for the enhanced (baseline + new ) data. Favorability maps were based on the integrated assessment of the three critical EGS exploration parameters of interest: rock type, temperature and stress. A complimentary trust map was generated to compliment the favorability maps to graphically illustrate the cumulative confidence in the data used in the favorability mapping. The Final Scientific Report (FSR) is submitted in two parts with Part I describing the results of project Tasks 1 through 3 and Part II covering the results of project Tasks 4 through 5 plus answering nine questions posed in the proposal for the overall project. FSR Part I presents (1) an assessment of the readily available public domain data and some proprietary data provided by Terra-Gen Power, LLC, (2) a re-interpretation of these data as required, (3) an exploratory geostatistical data analysis, (4) the baseline geothermal conceptual model, and (5) the EGS favorability/trust mapping. The conceptual model presented applies to both the hydrothermal system and EGS in the Dixie Valley region. FSR Part II presents (1) 278 new gravity stations; (2) enhanced gravity-magnetic modeling; (3) 42 new ambient seismic noise survey stations; (4) an integration of the new seismic noise data with a regional seismic network; (5) a new methodology and approach to interpret this data; (5) a novel method to predict rock type and temperature based on the newly interpreted data; (6) 70 new magnetotelluric (MT) stations; (7) an integrated interpretation of the enhanced MT data set; (8) the results of a 308 station soil CO2 gas survey; (9) new conductive thermal modeling in the project area; (10) new convective modeling in the Calibration Area; (11) pseudo-convective modeling in the Calibration Area; (12) enhanced data implications and qualitative geoscience correlations at three scales (a) Regional, (b) Project, and (c) Calibration Area; (13) quantitative geostatistical exploratory data analysis; and (14) responses to nine questions posed in the proposal for this investigation. Enhanced favorability/trust maps were not generated because there was not a sufficient amount of new, fully-vetted (see below) rock type, temperature, and stress data. The enhanced seismic data did generate a new method to infer rock type and temperature. However, in the opinion of the Principal Investigator for this project, this new methodology needs to be tested and evaluated at other sites in the Basin and Range before it is used to generate the referenced maps. As in the baseline conceptual model, the enhanced findings can be applied to both the hydrothermal system and EGS in the Dixie Valley region.

  6. Geochemical Implications of CO2 Leakage Associated with Geologic Storage: A Review

    SciTech Connect (OSTI)

    Harvey, Omar R.; Qafoku, Nikolla; Cantrell, Kirk J.; Brown, Christopher F.

    2012-07-09T23:59:59.000Z

    Leakage from deep storage reservoirs is a major risk factor associated with geologic sequestration of carbon dioxide (CO2). Different scientific theories exist concerning the potential implications of such leakage for near-surface environments. The authors of this report reviewed the current literature on how CO2 leakage (from storage reservoirs) would likely impact the geochemistry of near surface environments such as potable water aquifers and the vadose zone. Experimental and modeling studies highlighted the potential for both beneficial (e.g., CO2 re sequestration or contaminant immobilization) and deleterious (e.g., contaminant mobilization) consequences of CO2 intrusion in these systems. Current knowledge gaps, including the role of CO2-induced changes in redox conditions, the influence of CO2 influx rate, gas composition, organic matter content and microorganisms are discussed in terms of their potential influence on pertinent geochemical processes and the potential for beneficial or deleterious outcomes. Geochemical modeling was used to systematically highlight why closing these knowledge gaps are pivotal. A framework for studying and assessing consequences associated with each factor is also presented in Section 5.6.

  7. Up-Scaling Geochemical Reaction Rates for Carbon Dioxide (CO2) in Deep Saline Aquifers

    SciTech Connect (OSTI)

    Lindquist, W Brent

    2009-03-03T23:59:59.000Z

    The overall goal of the project was to bridge the gap between our knowledge of small-scale geochemical reaction rates and reaction rates meaningful for modeling transport at core scales. The working hypothesis was that reaction rates, determined from laboratory measurements based upon reactions typically conducted in well mixed batch reactors using pulverized reactive media may be significantly changed in in situ porous media flow due to rock microstructure heterogeneity. Specifically we hypothesized that, generally, reactive mineral surfaces are not uniformly accessible to reactive fluids due to the random deposition of mineral grains and to the variation in flow rates within a pore network. Expected bulk reaction rates would therefore have to be correctly up-scaled to reflect such heterogeneity. The specific objective was to develop a computational tool that integrates existing measurement capabilities with pore-scale network models of fluid flow and reactive transport. The existing measurement capabilities to be integrated consisted of (a) pore space morphology, (b) rock mineralogy, and (c) geochemical reaction rates. The objective was accomplished by: (1) characterizing sedimentary sandstone rock morphology using X-ray computed microtomography, (2) mapping rock mineralogy using back-scattered electron microscopy (BSE), X-ray dispersive spectroscopy (EDX) and CMT, (3) characterizing pore-accessible reactive mineral surface area, and (4) creating network models to model acidic CO{sub 2} saturated brine injection into the sandstone rock samples.

  8. Silver Peak Innovative Exploration Project

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project objectives: Reduce the high level of risk during the early stages of geothermal project development by conducting a multi-faceted and innovative exploration and drilling program at Silver Peak. Determine the combination of techniques that are most useful and cost-effective in identifying the geothermal resource through a detailed, post-project evaluation of the exploration and drilling program.

  9. Geochemical fluid characteristics and main achievements about tracer tests at Soultz-sous-Forts (France) 1 EC Contract SES6-CT-2003-502706

    E-Print Network [OSTI]

    Boyer, Edmond

    Geochemical fluid characteristics and main achievements about tracer tests at Soultz Related with Work Package WP1a (Short term fluid circulation tests) and WP1c (Data acquisition) GEOCHEMICAL FLUID CHARACTERISTICS AND MAIN ACHIEVEMENTS ABOUT TRACER TESTS AT SOULTZ-SOUS-FORÃ?TS (FRANCE

  10. Elucidating geochemical response of shallow heterogeneous aquifers to CO2 leakage using high-performance computing: Implications for monitoring of CO2 sequestration

    SciTech Connect (OSTI)

    Navarre-Sitchler, Alexis K.; Maxwell, Reed M.; Siirila, Erica R.; Hammond, Glenn E.; Lichtner, Peter C.

    2013-03-01T23:59:59.000Z

    Predicting and quantifying impacts of potential carbon dioxide (CO2) leakage into shallow aquifers that overlie geologic CO2 storage formations is an important part of developing reliable carbon storage techniques. Leakage of CO2 through fractures, faults or faulty wellbores can reduce groundwater pH, inducing geochemical reactions that release solutes into the groundwater and pose a risk of degrading groundwater quality. In order to help quantify this risk, predictions of metal concentrations are needed during geologic storage of CO2. Here, we present regional-scale reactive transport simulations, at relatively fine-scale, of CO2 leakage into shallow aquifers run on the PFLOTRAN platform using high-performance computing. Multiple realizations of heterogeneous permeability distributions were generated using standard geostatistical methods. Increased statistical anisotropy of the permeability field resulted in more lateral and vertical spreading of the plume of impacted water, leading to increased Pb2+ (lead) concentrations and lower pH at a well down gradient of the CO2 leak. Pb2+ concentrations were higher in simulations where calcite was the source of Pb2+ compared to galena. The low solubility of galena effectively buffered the Pb2+ concentrations as galena reached saturation under reducing conditions along the flow path. In all cases, Pb2+ concentrations remained below the maximum contaminant level set by the EPA. Results from this study, compared to natural variability observed in aquifers, suggest that bicarbonate (HCO3) concentrations may be a better geochemical indicator of a CO2 leak under the conditions simulated here.

  11. Safe Exploration in Markov Decision Processes Teodor Mihai Moldovan moldovan@cs.berkeley.edu

    E-Print Network [OSTI]

    Abbeel, Pieter

    Safe Exploration in Markov Decision Processes Teodor Mihai Moldovan moldovan@cs.berkeley.edu Pieter for safe exploration methods in Markov decision processes. We first pro- pose a general formulation reinforcement learning algorithms provide strong exploration guar- antees, but they tend to rely on an ergod

  12. Visualization Based Approach for Exploration of Health Data and Risk Factors

    E-Print Network [OSTI]

    Klippel, Alexander

    . The process for developing categories and exploring the relationships between health data and risk factors the three spaces of categorization, i.e., data, methods, and human concepts, in the exploration process1 Visualization Based Approach for Exploration of Health Data and Risk Factors Xiping Dai and Mark

  13. A Coordination-theory Approach to Exploring Process Alternatives for Designing Differentiated Products

    E-Print Network [OSTI]

    Hayashi, Naoki

    2003-02-03T23:59:59.000Z

    This paper describes a new systematic method for exploring and evaluating alternatives of a product design process for differentiated products - those that share some ...

  14. Geochemical evidence of a near-surface history for source rocks of the central Coast Mountains Batholith, British Columbia

    E-Print Network [OSTI]

    Wetmore, Paul H.

    Geochemical evidence of a near-surface history for source rocks of the central Coast Mountains to ,50 Ma, indicate that the source regions for these rocks were relatively uniform and typical abundance of deep crustal or upper-mantle source rocks (DePaolo 1981; Kistler 1990; Chen and Tilton 1991; De

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

    SciTech Connect (OSTI)

    Scott Fendorf; Phil Jardine

    2006-07-21T23:59:59.000Z

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

  16. PUBLISHED ONLINE: 19 JUNE 2011 | DOI: 10.1038/NGEO1183 Influence of subsurface biosphere on geochemical

    E-Print Network [OSTI]

    Girguis, Peter R.

    estimate the net flux of methane, carbon dioxide and hydrogen from diffuse and focused hydrothermal vents on geochemical fluxes from diffuse hydrothermal fluids Scott D. Wankel1 , Leonid N. Germanovich2 , Marvin D. Girguis1 * Hydrothermal vents along mid-ocean systems host unique, highly productive biological

  17. Assessment of peat quality by molecular and bulk geochemical analysis: Application to the Holocene record of the Chautagne

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Assessment of peat quality by molecular and bulk geochemical analysis: Application to the Holocene in general from a limited variety of local plants, peat is however sensitive to physicochemical changes the information on peat quality provided by various families of biochemical components (lipids, lignin, sugars

  18. Oxygen is a key element for biology and the cycling of geochemical elements, and has shaped the chemical

    E-Print Network [OSTI]

    Handy, Todd C.

    Oxygen is a key element for biology and the cycling of geochemical elements, and has shaped the chemical and biological evolution of Earth. The oceans appear to be loosing oxygen due to on-going climate change, with resulting impacts on marine ecosystems and global biogeochemical cycles. As oxygen levels

  19. Hyperspectral Mineral Mapping in Support of Geothermal Exploration: Examples from Long Valley Caldera, CA and Dixie Valley, NV, USA

    SciTech Connect (OSTI)

    Martini, B; Silver, E; Pickles, W; Cocks, P

    2004-03-25T23:59:59.000Z

    Growing interest and exploration dollars within the geothermal sector have paved the way for increasingly sophisticated suites of geophysical and geochemical tools and methodologies. The efforts to characterize and assess known geothermal fields and find new, previously unknown resources has been aided by the advent of higher spatial resolution airborne geophysics (e.g. aeromagnetics), development of new seismic processing techniques, and the genesis of modern multi-dimensional fluid flow and structural modeling algorithms, just to name a few. One of the newest techniques on the scene, is hyperspectral imaging. Really an optical analytical geochemical tool, hyperspectral imagers (or imaging spectrometers as they are also called), are generally flown at medium to high altitudes aboard mid-sized aircraft and much in the same way more familiar geophysics are flown. The hyperspectral data records a continuous spatial record of the earth's surface, as well as measuring a continuous spectral record of reflected sunlight or emitted thermal radiation. This high fidelity, uninterrupted spatial and spectral record allows for accurate material distribution mapping and quantitative identification at the pixel to sub-pixel level. In volcanic/geothermal regions, this capability translates to synoptic, high spatial resolution, large-area mineral maps generated at time scales conducive to both the faster pace of the exploration and drilling managers, as well as to the slower pace of geologists and other researchers trying to understand the geothermal system over the long run.

  20. Hyperspectral Mineral Mapping in Support of Geothermal Exploration: Examples from Long Valley Caldera, CA and Dixie Valley, NV, USA

    SciTech Connect (OSTI)

    Pickles, W L; Martini, B A; Silver, E A; Cocks, P A

    2004-03-03T23:59:59.000Z

    Growing interest and exploration dollars within the geothermal sector have paved the way for increasingly sophisticated suites of geophysical and geochemical tools and methodologies. The efforts to characterize and assess known geothermal fields and find new, previously unknown resources has been aided by the advent of higher spatial resolution airborne geophysics (e.g. aeromagnetics), development of new seismic processing techniques, and the genesis of modern multi-dimensional fluid flow and structural modeling algorithms, just to name a few. One of the newest techniques on the scene, is hyperspectral imaging. Really an optical analytical geochemical tool, hyperspectral imagers (or imaging spectrometers as they are also called), are generally flown at medium to high altitudes aboard mid-sized aircraft and much in the same way more familiar geophysics are flown. The hyperspectral data records a continuous spatial record of the earth's surface, as well as measuring a continuous spectral record of reflected sunlight or emitted thermal radiation. This high fidelity, uninterrupted spatial and spectral record allows for accurate material distribution mapping and quantitative identification at the pixel to sub-pixel level. In volcanic/geothermal regions, this capability translates to synoptic, high spatial resolution, large-area mineral maps generated at time scales conducive to both the faster pace of the exploration and drilling managers, as well as to the slower pace of geologists and other researchers trying to understand the geothermal system over the long run.

  1. Geochemical Impacts of Leaking CO2 from Subsurface Storage Reservoirs to Unconfined and Confined Aquifers

    SciTech Connect (OSTI)

    Qafoku, Nikolla; Brown, Christopher F.; Wang, Guohui; Sullivan, E. C.; Lawter, Amanda R.; Harvey, Omar R.; Bowden, Mark

    2013-04-15T23:59:59.000Z

    Experimental research work has been conducted and is undergoing at Pacific Northwest National Laboratory (PNNL) to address a variety of scientific issues related with the potential leaks of the carbon dioxide (CO2) gas from deep storage reservoirs. The main objectives of this work are as follows: • Develop a systematic understanding of how CO2 leakage is likely to influence pertinent geochemical processes (e.g., dissolution/precipitation, sorption/desorption and redox reactions) in the aquifer sediments. • Identify prevailing environmental conditions that would dictate one geochemical outcome over another. • Gather useful information to support site selection, risk assessment, policy-making, and public education efforts associated with geological carbon sequestration. In this report, we present results from experiments conducted at PNNL to address research issues related to the main objectives of this effort. A series of batch and column experiments and solid phase characterization studies (quantitative x-ray diffraction and wet chemical extractions with a concentrated acid) were conducted with representative rocks and sediments from an unconfined, oxidizing carbonate aquifer, i.e., Edwards aquifer in Texas, and a confined aquifer, i.e., the High Plains aquifer in Kansas. These materials were exposed to a CO2 gas stream simulating CO2 gas leaking scenarios, and changes in aqueous phase pH and chemical composition were measured in liquid and effluent samples collected at pre-determined experimental times. Additional research to be conducted during the current fiscal year will further validate these results and will address other important remaining issues. Results from these experimental efforts will provide valuable insights for the development of site-specific, generation III reduced order models. In addition, results will initially serve as input parameters during model calibration runs and, ultimately, will be used to test model predictive capability and competency. The results from these investigations will provide useful information to support site selection, risk assessment, and public education efforts associated with geological, deep subsurface CO2 storage and sequestration.

  2. Innovative Exploration Techniques for Geothermal Assessment at...

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

    Techniques for Geothermal Assessment at Jemez Pueblo, New Mexico Innovative Exploration Techniques for Geothermal Assessment at Jemez Pueblo, New Mexico Innovative Exploration...

  3. Transitioning the Transportation Sector: Exploring the Intersection...

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

    the Transportation Sector: Exploring the Intersection of Hydrogen Fuel Cell and Natural Gas Vehicles Transitioning the Transportation Sector: Exploring the Intersection...

  4. Geothermal Exploration Best Practices Webinar Presentation Now...

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

    Exploration Best Practices Webinar Presentation Now Available Geothermal Exploration Best Practices Webinar Presentation Now Available April 12, 2012 - 3:08pm Addthis Presentation...

  5. Evolutionary Robotics: Exploring New Horizons

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Chapter 1 Evolutionary Robotics: Exploring New Horizons St´ephane Doncieux, Jean-Baptiste Mouret, Nicolas Bredeche, and Vincent Padois Abstract. This paper considers the field of Evolutionary Robotics (ER of research is discussed, as well as the potential use of ER in a robot design process. Four main aspects

  6. Edinburgh Research Explorer Money Cycles

    E-Print Network [OSTI]

    Millar, Andrew J.

    Edinburgh Research Explorer Money Cycles Citation for published version: Clausen, A & Strub, C 2014 'Money Cycles' Edinburgh School of Economics Discussion Paper Series. Link: Link to publication record date: 11. Dec. 2014 #12;Edinburgh School of Economics Discussion Paper Series Number 249 Money Cycles

  7. Seismic methods for resource exploration in enhanced geothermal systems

    SciTech Connect (OSTI)

    Gritto, Roland; Majer, Ernest L.

    2002-06-12T23:59:59.000Z

    A finite-difference modeling study of seismic wave propagation was conducted to determine how to best investigate subsurface faults and fracture zones in geothermal areas. The numerical model was created based on results from a previous seismic reflection experiment. A suite of fault models was investigated including blind faults and faults with surface expressions. The seismic data suggest that blind faults can be detected by a sudden attenuation of seismic wave amplitudes, as long the fault is located below the receiver array. Additionally, a conversion from P- to S-waves indicates the reflection and refraction of the P-waves while propagating across the fault. The drop in amplitudes and the excitation of S-waves can be used to estimate the location of the fault at depth. The accuracy of the numerical modeling depends on the availability of a priori in situ information (velocity and density) from borehole experiments in the geothermal area.

  8. A method for tradespace exploration of systems of systems

    E-Print Network [OSTI]

    Chattopadhyay, Debarati

    2009-01-01T23:59:59.000Z

    Systems of Systems (SoS) are a current focus of many organizations interested in integrating assets and utilizing new technology to create multi-component systems that deliver value over time. The dynamic composition of ...

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

    Open Energy Info (EERE)

    imaging is for siting wells for successful location of permeable pathways (often fracture permeability) that are controlling flow and transport in naturally fractured...

  10. An exploration of materials and methods in manufacturing : shoreline membranes

    E-Print Network [OSTI]

    Chin, Ryan C. C., 1974-

    2000-01-01T23:59:59.000Z

    This thesis is an investigation into the design methodologies and ideologies of manufacturing processes specifically related to automotive design. The conceptualization, prototyping, testing, and manufacturing of cars is ...

  11. An Evaluation Of Exploration Methods For Low-Temperature Geothermal...

    Open Energy Info (EERE)

    Geothermal Systems In The Artesian-City Area, Idaho Authors E. M. Struhsacker, C. Smith and R. M. Capuano Published Journal Geological Society of America Bulletin, 1983 DOI...

  12. Exploring nonlinear regression methods, with application to association studies

    E-Print Network [OSTI]

    Speed, Douglas Christopher

    2011-07-12T23:59:59.000Z

    set, where each partition defines groups of predictors that jointly contribute towards the response. A sparsity assumption supposes most predictors belong in the “null group” indicating they have no effect on the outcome. In Chapter 4, I compare...

  13. State of Seismic Methods For Geothermal Reservoir Exploration...

    Office of Scientific and Technical Information (OSTI)

    Geometry, Large-Scale Structure, And Regional Anisotropy On AVOA: An Example From The Wind River Basin, 67th. Ann. SEG Mtg, Exp. Abstr., 1997-2000 (1997). GRITTO, R., Daley, T....

  14. Seismic Methods For Resource Exploration In Enhanced Geothermal Systems |

    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 Office of InspectorConcentrating Solar PowerstoriesNrelPartnerTypePonsa, Mallorca: EnergySecondary Energy

  15. 3-D Seismic Methods For Geothermal Reservoir Exploration And

    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 Office of Inspector GeneralDepartmentAUDIT REPORTOpenWende NewSowitec doWinvest

  16. Development of Exploration Methods for Engineered Geothermal Systems

    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 Home5b9fcbce19 NoPublic Utilities Address:011-DNA Jump to:52c8ff988c1Dering Harbor, New York:Supercritical CO2 and Fluid,

  17. A Numerical Evaluation Of Electromagnetic Methods In Geothermal Exploration

    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 Home5b9fcbce19 NoPublic Utilities Address: 160 East 300 SouthWater Rights, Substantive(Sichuan, Sw China)|EnergyApproach ToMapSteam-

  18. A Numerical Evaluation Of Electromagnetic Methods In Geothermal Exploration

    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 Home5b9fcbce19 NoPublic Utilities Address: 160 East 300 SouthWater Rights, Substantive(Sichuan, Sw China)|EnergyApproach

  19. A Numerical Evaluation Of Electromagnetic Methods In Geothermal Exploration

    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 Home5b9fcbce19 NoPublic Utilities Address: 160 East 300 SouthWater Rights, Substantive(Sichuan, Sw China)|EnergyApproach- Reply |

  20. A Numerical Evaluation Of Electromagnetic Methods In Geothermal Exploration

    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 Home5b9fcbce19 NoPublic Utilities Address: 160 East 300 SouthWater Rights, Substantive(Sichuan, Sw China)|EnergyApproach- Reply ||

  1. Borehole Logging Methods for Exploration and Evaluation of Uranium Deposits

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' ResearchTheMarketing,Energy andNews and updates fromNovemberNavalInformation on(1967)

  2. 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinan antagonist Journal Article: Crystal structureComposite ForPropertiestoDept ofEnergy,C.F. Progress-D

  3. Development of Exploration Methods for Engineered Geothermal Systems

    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 Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 No revision has Type Term TitleSilver Peak Area (DOEThrough

  4. Genability Explorer | 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 CenterFranconia, Virginia: Energy Resources Jump to: navigation, searchGeauga County, Ohio: Energy Resources Jump to:Genability Explorer

  5. Exploration of the Upper Hot Creek Ranch Geothermal Resource, Nye County, Nevada

    SciTech Connect (OSTI)

    Dick Benoit; David Blackwell

    2006-01-01T23:59:59.000Z

    The Upper Hot Creek Ranch (UHCR) geothermal system had seen no significant exploration activity prior to initiation of this GRED III project. Geochemical geothermometers calculated from previously available but questionable quality analyses of the UHCR hot spring waters indicated possible subsurface temperatures of +320 oF. A complex Quaternary and Holocene faulting pattern associated with a six mile step over of the Hot Creek Range near the UHCR also indicated that this area was worthy of some exploration activity. Permitting activities began in Dec. 2004 for the temperature-gradient holes but took much longer than expected with all drilling permits finally being received in early August 2005. The drilling and geochemical sampling occurred in August 2005. Ten temperature gradient holes up to 500’ deep were initially planned but higher than anticipated drilling and permitting costs within a fixed budget reduced the number of holes to five. Four of the five holes drilled to depths of 300 to 400’ encountered temperatures close to the expected regional thermal background conditions. These four holes failed to find any evidence of a large thermal anomaly surrounding the UHCR hot springs. The fifth hole, located within a narrow part of Hot Creek Canyon, encountered a maximum temperature of 81 oF at a depth of 105’ but had cooler temperatures at greater depth. Temperature data from this hole can not be extrapolated to greater depths. Any thermal anomaly associated with the UHCR geothermal system is apparently confined to the immediate vicinity of Hot Creek Canyon where challenges such as topography, a wilderness study area, and wetlands issues will make further exploration time consuming and costly. Ten water samples were collected for chemical analysis and interpretation. Analyses of three samples of the UHCR thermal give predicted subsurface temperatures ranging from 317 to 334 oF from the Na-K-Ca, silica (quartz), and Na-Li geothermometers. The fact that all three thermometers closely agree gives the predictions added credibility. Unfortunately, the final result of this exploration is that a moderate temperature geothermal resource has been clearly identified but it appears to be restricted to a relatively small area that would be difficult to develop.

  6. Up-Scaling Geochemical Reaction Rates for Carbon Dioxide (CO2) in Deep Saline Aquifers

    SciTech Connect (OSTI)

    Peters, Catherine A

    2013-02-28T23:59:59.000Z

    Geochemical reactions in deep subsurface environments are complicated by the consolidated nature and mineralogical complexity of sedimentary rocks. Understanding the kinetics of these reactions is critical to our ability to make long-term predictions about subsurface processes such as pH buffering, alteration in rock structure, permeability changes, and formation of secondary precipitates. In this project, we used a combination of experiments and numerical simulation to bridge the gap between our knowledge of these reactions at the lab scale and rates that are meaningful for modeling reactive transport at core scales. The focus is on acid-driven mineral dissolution, which is specifically relevant in the context of CO2-water-rock interactions in geological sequestration of carbon dioxide. The project led to major findings in three areas. First, we modeled reactive transport in pore-network systems to investigate scaling effects in geochemical reaction rates. We found significant scaling effects when CO2 concentrations are high and reaction rates are fast. These findings indicate that the increased acidity associated with geological sequestration can generate conditions for which proper scaling tools are yet to be developed. Second, we used mathematical modeling to investigate the extent to which SO2, if co-injected with CO2, would acidify formation brines. We found that there exist realistic conditions in which the impact on brine acidity will be limited due to diffusion rate-limited SO2 dissolution from the CO2 phase, and the subsequent pH shift may also be limited by the lack of availability of oxidants to produce sulfuric acid. Third, for three Viking sandstones (Alberta sedimentary basin, Canada), we employed backscattered electron microscopy and energy dispersive X-ray spectroscopy to statistically characterize mineral contact with pore space. We determined that for reactive minerals in sedimentary consolidated rocks, abundance alone is not a good predictor of mineral accessible surface area, and should not be used in reactive transport modeling. Our work showed that reaction rates would be overestimated by three to five times.

  7. Geologic, geophysical, and geochemical aspects of site-specific studies of the geopressured-geothermal energy resource of southern Louisiana. Final report

    SciTech Connect (OSTI)

    Pilger, R.H. Jr. (ed.)

    1985-01-01T23:59:59.000Z

    The report consists of four sections dealing with progress in evaluating geologic, geochemical, and geophysical aspects of geopressured-geothermal energy resources in Louisiana. Separate abstracts have been prepared for the individual sections. (ACR)

  8. Preburn versus postburn mineralogical and geochemical characteristics of overburden and coal at the Hanna, Wyoming underground coal gasification site

    SciTech Connect (OSTI)

    Oliver, R.L.; Youngberg, A.D.

    1983-12-01T23:59:59.000Z

    Hundreds of mineralogic and geochemical tests were done under US Department of Energy contracts on core samples taken from the Hanna underground coal gasification site. These tests included x-ray diffraction studies of minerals in coal ash, overburden rocks, and heat-altered rocks; x-ray fluorescence analyses of oxides in coal ash and heat-altered rocks; semi-quantitative spectrographic analyses of elements in coal, overburden, and heat-altered rocks; chemical analyses of elements and compounds in coal, overburden, and heat-altered rocks and ASTM proximate and ultimate analyses of coal and heat-altered coal. These data sets were grouped, averaged, and analyzed to provide preburn and postburn mineralogic and geochemical characteristics of rock units at the site. Where possible, the changes in characteristics from the preburn to the postburn state are related to underground coal gasification processes. 11 references, 13 figures, 8 tables.

  9. Microbial Ecology Application of Nonlinear Analysis Methods for Identifying Relationships Between Microbial Community Structure and

    E-Print Network [OSTI]

    Groundwater Geochemistry; Jack C. Schryver; Craig C. Br; Susan M. Pfiffner; Anthony V. Palumbo; Aaron D. Peacock; David C. White; James P. Mckinley; Philip E. Long

    The relationship between groundwater geochemistry and microbial community structure can be complex and dif-ficult to assess. We applied nonlinear and generalized linear data analysis methods to relate microbial biomark-ers (phospholipids fatty acids, PLFA) to groundwater geochemical characteristics at the Shiprock uranium mill tailings disposal site that is primarily contaminated by uranium, sulfate, and nitrate. First, predictive models were constructed using feedforward artificial neural net-works (NN) to predict PLFA classes from geochemistry. To reduce the danger of overfitting, parsimonious NN architectures were selected based on pruning of hidden nodes and elimination of redundant predictor (geo-chemical) variables. The resulting NN models greatly

  10. Enhanced Land Subsidence and Seidment Dynamics in Galveston Bay- Implications for Geochemical Processes and Fate and Transport of Contaminants

    E-Print Network [OSTI]

    Almukaimi, Mohammad E

    2013-07-05T23:59:59.000Z

    ENHANCED LAND SUBSIDENCE AND SEDIMENT DYNAMICS IN GALVESTON BAY- IMPLICATIONS FOR GEOCHEMICAL PROCESSES AND FATE AND TRANSPORT OF CONTAMINANTS A Thesis by MOHAMMAD ALMUKAIMI Submitted to the Office of Graduate Studies of Texas A... August 2013 Major Subject: Oceanography Copyright 2013 Mohammad Almukaimi ii ABSTRACT Galveston Bay is the second largest estuary in the Gulf of Mexico. The bay?s watershed and shoreline contains one of the largest concentrations...

  11. GEOCHEMICAL APPROACHES TO THE STUDY OF LIFE AND DEATH OF DINOSAURS FROM THE EARLY CRETACEOUS CEDAR MOUNTAIN FORMATION, UTAH

    E-Print Network [OSTI]

    Suarez, Celina Angelica

    2010-04-22T23:59:59.000Z

    ___________________________ G.L. Macpherson ___________________________ Larry D. Martin Date defended:_______________ iii ABSTRACT Celina A. Suarez, Ph.D. Department of Geology, April 2010 University of Kansas In this dissertation, geochemical analysis..., it can be determined that the proximity of the Western Interior Seaway and the rise of the Sevier Mountains were the cause of isotopic variability and dominant control on regional climate during the Cedar Mountain Formation time. iv...

  12. Geochemical evaluation of oils and source rocks from the Western Siberian basin, U. S. S. R

    SciTech Connect (OSTI)

    Peters, K.E.; Huizinga, B.J. (Chevron Overseas Petroleum, Inc., San Ramon, CA (United States)); Moldowan, J.M. (Chevron Oil Field Research Co., Richmond, CA (United States)); Kontorovich, A.E.; Stasova, O. (Siberian Scientific Research Institute for Geology, Geophysics and Mineral Resources, Novobsibirsk (Russian Federation)); Demaison, G.J.

    1991-03-01T23:59:59.000Z

    Although the Western Siberian basin is among the most prolific in the world, there has been disagreement among Soviet geoscientists on the origin of the petroleum within this basin. Screening geochemical analyses were used to select several oils and potential source rocks for a preliminary study using detailed biomarker and supporting geochemistry. Possible sources for this petroleum include rocks of Middle Jurassic, Upper Jurassic, and Lower Cretaceous age. Results indicate that most of the analyzed Western Siberian oils, occurring in reservoirs from Middle Jurassic to Late Cretaceous in age, are derived from the Upper Jurassic Bazhenov Formation. The locations of the samples in the study generally correspond to the distribution of the most effective oil-generative parts of the Bazhenov Formation. Analyses show that the Bazhenov rock samples contain abundant marine algal and bacterial organic matter, preserved under anoxic depositional conditions. Biomarkers show that thermal maturities of the samples range from the early to late oil-generative window and that some are biodegraded. For example, the Salym No. 114 oil, which flowed directly from the Bazhenov Formation, shows a maturity equivalent to the late oil window. The Van-Egan no. 110 oil shows maturity equivalent to the early oil window and is biodegraded. This oil shows preferential microbial conversion of lower homologs of the 17{alpha}, 21{beta}(H)-hopanes to 25-nor-17{alpha}(H)-hopanes.

  13. Geochemical and physical properties of soils and shallow sediments at the Savannah River Site

    SciTech Connect (OSTI)

    Looney, B.B.; Eddy, C.A.; Ramdeen, M.; Pickett, J. (Savannah River Lab., Aiken, SC (USA)); Rogers, V. (Soil Conservation Service, Aiken, SC (USA). Savannah River Site Savannah River Lab., Aiken, SC (USA)); Scott, M.T.; Shirley, P.A. (Sirrine Environmental Consultants, Greenville, SC (USA))

    1990-08-31T23:59:59.000Z

    A program to characterize the geochemical and physical properties of the unimpacted soils and shallow sediments at the Savannah River Site (SRS) has been completed. The maximum, minimum, median, standard deviation, and mean values for metals, radionuclides, inorganic anions, organic compounds, and agricultural indicator parameters are summarized for six soil series that were identified as representative of the 29 soil series at SRS. The soils from unimpacted areas of SRS are typical of soils found in moderately aggressive weathering environments, including the southeastern United States. Appendix 8 organic compounds were detected in all samples. Since these constituents are not generally present in soil, this portion of the investigation was intended to assess possible laboratory artifacts. An additional objective of the SRS Soil Study was to determine if the composition of the split spoon sampler biased chemical analysis of the soils. Twenty-five duplicate samples were analyzed for a number of metals, radiological and agricultural parameters, and organics by two laboratories currently contracted with to analyze samples during waste site characterization. In all cases, the absolute values of the average differences are relatively small compared to the overall variability in the population. 31 refs., 14 figs., 48 tabs.

  14. Sandia National Laboratories: Explore Sandia

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive SolarEducation Programs:CRFProvideAids EnergyUFDSunShot OnEnergyEventsExplore

  15. Synchrotrons Explore Water's Molecular Mysteries

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus TomAbout »LabSustainability AmesSynchrotrons Explore Water's

  16. Synchrotrons Explore Water's Molecular Mysteries

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus TomAbout »LabSustainability AmesSynchrotrons Explore

  17. Sailing the Corpus Sea: Visual Exploration of News Stories

    E-Print Network [OSTI]

    Hammerton, James

    Sailing the Corpus Sea: Visual Exploration of News Stories Ilija Subasi´c1, Bettina Berendt1.lastname@cs.kuleuven.be, and 2daniel.trumper@gmail.com Abstract--Rich information spaces like blogs or news are full of "stories, it is difficult to reconstruct a story already in the past. In this paper, we present the STORIES methods and tool

  18. EXPLORATION ACTIVITY WORKSHEET Purpose: The exploration activity is designed for students to "explore" opportunities at UM as they

    E-Print Network [OSTI]

    Hill, Wendell T.

    EXPLORATION ACTIVITY WORKSHEET Purpose: The exploration activity is designed for students to "explore" opportunities at UM as they relate to student success, majors, careers of interest and other of their academic development and thus, you and your advisor will determine what type of activity or process you

  19. Exploration of 3D Printing.

    E-Print Network [OSTI]

    Lin, Zeyu

    2014-01-01T23:59:59.000Z

    ??3D printing technology is introduced and defined in this Thesis. Some methods of 3D printing are illustrated and their principles are explained with pictures. Most… (more)

  20. Design exploration: engaging a larger user population

    E-Print Network [OSTI]

    Moore, John Michael

    2009-06-02T23:59:59.000Z

    . One challenge to such an approach is how software designers make use of the potentially overwhelming combination of text, graphics, and other content. The Design Exploration process provides users and other stakeholders the Design Exploration Builder...

  1. Geochemical and Isotopic Evaluation of Groundwater Movement in Corrective Action Unit 97: Yucca Flat/Climax Mine, Nevada Test Site, Nevada, Rev. No.: 0

    SciTech Connect (OSTI)

    Farnham, Irene

    2006-02-01T23:59:59.000Z

    This report describes the results of a comprehensive geochemical evaluation of the groundwater flow system in the Yucca Flat/Climax Mine Corrective Action Unit (CAU). The main objectives of this study are to identify probable pathways for groundwater flow within the study area and to develop constraints on groundwater transit times between selected data collection sites. This work provides an independent means of testing and verifying predictive flow models being developed for this CAU using finite element methods. The Yucca Flat/Climax Mine CAU constitutes the largest of six underground test areas on the Nevada Test Site (NTS) specified for remedial action in the ''Federal Facility Agreement and Consent Order''. A total of 747 underground nuclear detonations were conducted in this CAU. Approximately 23 percent of these detonations were conducted below or near the water table, resulting in groundwater contamination in the vicinity and possibly downgradient of these underground test locations. Therefore, a rigorous evaluation of the groundwater flow system in this CAU is necessary to assess potential long-term risks to the public water supply at downgradient locations.

  2. Integrated Chemical Geothermometry System for Geothermal Exploration

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

    interpretations) * Reduce exploration and development costs Innovation * Numerical optimization of multicomponent chemical geothermometry at multiple locations * Integration with...

  3. Object Exploration By Purposive, Dynamic Viewpoint Adjustment

    E-Print Network [OSTI]

    Dyer, Charles R.

    . Unlike previous approaches where exploration is cast as a discrete process (i.e., asking where to look on the object surface that are occluded when the exploration process is initiated. Our goal is to designObject Exploration By Purposive, Dynamic Viewpoint Adjustment Kiriakos N. Kutulakos Charles R. Dyer

  4. Power options for lunar exploration

    SciTech Connect (OSTI)

    Bamberger, J.A.; Gaustad, K.L.

    1992-01-01T23:59:59.000Z

    This paper presents an overview of the types of power systems available for providing power on the moon. Lunar missions of exploration, in situ resource utilization, and colonization will be constrained by availability of adequate power. The length of the lunar night places severe limitations on solar power system designs, because a large portion of the system mass is devoted to energy storage. The selection of the ideal power source hardware will require compatibility with not only the lunar base power requirements and environment, but also with the conversion, storage, and transmission equipment. In addition, further analysis to determine the optimum operating parameters for a given power system should be conducted so that critical technologies can be identified in the early stages of base development. This paper describes the various concepts proposed for providing power on the lunar surface and compare their ranges of applicability. The importance of a systems approach to the integration of these components will also be discussed.

  5. Stochastic resonance for exploration geophysics

    E-Print Network [OSTI]

    Omerbashich, Mensur

    2008-01-01T23:59:59.000Z

    Stochastic resonance (SR) is a phenomenon in which signal to noise (SN) ratio gets improved by noise addition rather than removal as envisaged classically. SR was first claimed in climatology a few decades ago and then in other disciplines as well. The same as it is observed in natural systems, SR is used also for allowable SN enhancements at will. Here I report a proof of principle that SR can be useful in exploration geophysics. For this I perform high frequency GaussVanicek variance spectral analyses (GVSA) of model traces characterized by varying levels of complexity, completeness and pollution. This demonstration justifies all further research on SR in applied geophysics, as energy demands and depletion of reachable supplies potentially make SR vital in a near future.

  6. Geochemical Data Package for the 2005 Hanford Integrated Disposal Facility Performance Assessment

    SciTech Connect (OSTI)

    Krupka, Kenneth M.; Serne, R JEFFREY.; Kaplan, D I.

    2004-09-30T23:59:59.000Z

    CH2M HILL Hanford Group, Inc. (CH2M HILL) is designing and assessing the performance of an integrated disposal facility (IDF) to receive low-level waste (LLW), mixed low-level waste (MLLW), immobilized low-activity waste (ILAW), and failed or decommissioned melters. The CH2M HILL project to assess the performance of this disposal facility is the Hanford IDF Performance Assessment (PA) activity. The goal of the Hanford IDF PA activity is to provide a reasonable expectation that the disposal of the waste is protective of the general public, groundwater resources, air resources, surface-water resources, and inadvertent intruders. Achieving this goal will require prediction of contaminant migration from the facilities. This migration is expected to occur primarily via the movement of water through the facilities, and the consequent transport of dissolved contaminants in the vadose zone to groundwater where contaminants may be re-introduced to receptors via drinking water wells or mixing in the Columbia River. Pacific Northwest National Laboratory (PNNL) assists CH2M HILL in their performance assessment activities. One of the PNNL tasks is to provide estimates of the geochemical properties of the materials comprising the IDF, the disturbed region around the facility, and the physically undisturbed sediments below the facility (including the vadose zone sediments and the aquifer sediments in the upper unconfined aquifer). The geochemical properties are expressed as parameters that quantify the adsorption of contaminants and the solubility constraints that might apply for those contaminants that may exceed solubility constraints. The common parameters used to quantify adsorption and solubility are the distribution coefficient (Kd) and the thermodynamic solubility product (Ksp), respectively. In this data package, we approximate the solubility of contaminants using a more simplified construct, called the solution concentration limit, a constant value. The Kd values and solution concentration limits for each contaminant are direct inputs to subsurface flow and transport codes used to predict the performance of the IDF system. In addition to the best-estimate Kd values, a reasonable conservative value and a range are provided. The data package does not list estimates for the range in solubility limits or their uncertainty. However, the data package does provide different values for both the Kd values and solution concentration limits for different spatial zones in the IDF system and does supply time-varying Kd values for the cement solidified waste. The Kd values and solution concentration limits presented for each contaminant were previously presented in a report prepared by Kaplan and Serne (2000) for the 2001 ILAW PA, and have been updated to include applicable data from investigations completed since the issuance of that report and improvements in our understanding of the geochemistry specific to Hanford. A discussion is also included of the evolution of the Kd values recommended from the original 1999 ILAW PA through the 2001 ILAW and 2003 Supplement PAs to the current values to be used for the 2005 IDF PA for the key contaminants of concern: Cr(VI), nitrate, 129I, 79Se, 99Tc, and U(VI). This discussion provides the rationale for why certain Kd have changed with time.

  7. Geochemical information for sites contaminated with low-level radioactive wastes. III. Weldon Spring Storage Site

    SciTech Connect (OSTI)

    Seeley, F.G.; Kelmers, A.D.

    1985-02-01T23:59:59.000Z

    The Weldon Spring Storage Site (WSSS), which includes both the chemical site and the quarry, became radioactively contaminated as the result of wastes that were being stored from operations to recover uranium from pitchblende ores in the 1940s and 1950s. The US Department of Energy (DOE) is considering various remedial action options for the WSSS. This report describes the results of geochemical investigations carried out at Oak Ridge National Laboratory (ORNL) to support these activities and to help quantify various remedial action options. Soil and groundwater samples were characterized, and uranium and radium sorption ratios were measured in site soil/groundwater systems by batch contact methodology. Soil samples from various locations around the raffinate pits were found to contain major amounts of silica, along with illite as the primary clay constituent. Particle sizes of the five soil samples were variable (50% distribution point ranging from 12 to 81 ..mu..m); the surface areas varied from 13 to 62 m/sup 2//g. Elemental analysis of the samples showed them to be typical of sandy clay and silty clay soils. Groundwater samples included solution from Pit 3 and well water from Well D. Anion analyses showed significant concentrations of sulfate and nitrate (>350 and >7000 mg/L, respectively) in the solution from Pit 3. These anions were also present in the well water, but in lower concentrations. Uranium sorption ratios for four of the soil samples contacted with the solution from Pit 3 were moderate to high (approx. 300 to approx. 1000 mL/g). The fifth sample had a ratio of only 12 mL/g. Radium sorption ratios for the five samples were moderate to high (approx. 600 to approx. 1000 mL/g). These values indicate that soil at the WSSS may show favorable retardation of uranium and radium in the groundwater. 13 references, 13 figures, 10 tables.

  8. Model-Based Analysis of the Role of Biological, Hydrological and Geochemical Factors Affecting Uranium Bioremediation

    SciTech Connect (OSTI)

    Zhao, Jiao; Scheibe, Timothy D.; Mahadevan, Radhakrishnan

    2011-01-24T23:59:59.000Z

    Uranium contamination is a serious concern at several sites motivating the development of novel treatment strategies such as the Geobacter-mediated reductive immobilization of uranium. However, this bioremediation strategy has not yet been optimized for the sustained uranium removal. While several reactive-transport models have been developed to represent Geobacter-mediated bioremediation of uranium, these models often lack the detailed quantitative description of the microbial process (e.g., biomass build-up in both groundwater and sediments, electron transport system, etc.) and the interaction between biogeochemical and hydrological process. In this study, a novel multi-scale model was developed by integrating our recent model on electron capacitance of Geobacter (Zhao et al., 2010) with a comprehensive simulator of coupled fluid flow, hydrologic transport, heat transfer, and biogeochemical reactions. This mechanistic reactive-transport model accurately reproduces the experimental data for the bioremediation of uranium with acetate amendment. We subsequently performed global sensitivity analysis with the reactive-transport model in order to identify the main sources of prediction uncertainty caused by synergistic effects of biological, geochemical, and hydrological processes. The proposed approach successfully captured significant contributing factors across time and space, thereby improving the structure and parameterization of the comprehensive reactive-transport model. The global sensitivity analysis also provides a potentially useful tool to evaluate uranium bioremediation strategy. The simulations suggest that under difficult environments (e.g., highly contaminated with U(VI) at a high migration rate of solutes), the efficiency of uranium removal can be improved by adding Geobacter species to the contaminated site (bioaugmentation) in conjunction with the addition of electron donor (biostimulation). The simulations also highlight the interactive effect of initial cell concentration and flow rate on U(VI) reduction.

  9. STATISTICAL METHODS STATISTICAL METHODS

    E-Print Network [OSTI]

    Delorme, Arnaud

    STATISTICAL METHODS 1 STATISTICAL METHODS Arnaud Delorme, Swartz Center for Computational@salk.edu. Keywords: statistical methods, inference, models, clinical, software, bootstrap, resampling, PCA, ICA Abstract: Statistics represents that body of methods by which characteristics of a population are inferred

  10. Effective mineral exploration programs maximize the ben-efit of appropriate technologies in order to increase cost

    E-Print Network [OSTI]

    Oldenburg, Douglas W.

    to help in the exploration process and to test the effectiveness of dif- ferent methods overEffective mineral exploration programs maximize the ben- efit of appropriate technologies in order of discovery. In other words, correct use of available tools can allow exploration programs to find more ore

  11. Sampling designs for geochemical baseline studies in the Colorado oil shale region: a manual for practical application

    SciTech Connect (OSTI)

    Klusman, R. W.; Ringrose, C. D.; Candito, R. J.; Zuccaro, B.; Rutherford, D. W.; Dean, W. E.

    1980-06-01T23:59:59.000Z

    This manual presents a rationale for sampling designs, and results of geochemical baseline studies in the Colorado portion of the oil-shale region. The program consists of a systematic trace element study of soils, stream sediments, and plants carried out in a way to be conservative of human and financial resources and yield maximum information. Extension of this approach to other parameters, other locations, and to environmental baseline studies in general is a primary objective. A baseline for any geochemical parameter can be defined as the concentration of that parameter in a given medium such as soil, the range of its concentration, and the geographic scale of variability. In air quality studies, and to a lesser extent for plants, the temporal scale of variability must also be considered. In studies of soil, the temporal variablility does not become a factor until such time that a study is deemed necessary to evaluate whether or not there have been changes in baseline levels as a result of development. The manual is divided into five major parts. The first is a suggested sampling protocol which is presented in an outline form for guiding baseline studies in this area. The second section is background information on the physical features of the area of study, trace elements of significance occurring in oil shale, and the sample media used in these studies. The third section is concerned primarily with sampling design and its application to the geochemical studies of the oil shale region. The last sections, in the form of appendices, provide actual data and illustrate in a systematic manner, the calculations performed to obtain the various summary data. The last segment of the appendices is a more academic discussion of the geochemistry of trace elements and the parameters of importance influencing their behavior in natural systems.

  12. GIS Regional Spatial Data from the Great Basin Center for Geothermal Energy: Geochemical, Geodesic, Geologic, Geophysical, Geothermal, and Groundwater Data

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

    The Great Basin Center for Geothermal Energy, part of the University of Nevada, Reno, conducts research towards the establishment of geothermal energy as an economically viable energy source within the Great Basin. The Center specializes in collecting and synthesizing geologic, geochemical, geodetic, geophysical, and tectonic data, and using Geographic Information System (GIS) technology to view and analyze this data and to produce favorability maps of geothermal potential. The center also makes its collections of spatial data available for direct download to the public. Data are in Lambert Conformable Conic Projection.

  13. MinPos : A Novel Frontier Allocation Algorithm for Multi-robot Exploration

    E-Print Network [OSTI]

    Simonin, Olivier -Département Informatique, Institut National des Sciences Appliquées de Lyon

    MinPos : A Novel Frontier Allocation Algorithm for Multi-robot Exploration Antoine Bautin, Olivier to minimize the total duration. A standard method to discover new areas is to assign frontiers (boundaries between unexplored and explored accessible areas) to robots. In this context, the frontier allocation

  14. MinPos : a Novel Frontier Allocation Algorithm for Multi-robot Exploration

    E-Print Network [OSTI]

    Boyer, Edmond

    MinPos : a Novel Frontier Allocation Algorithm for Multi-robot Exploration Antoine Bautin, Olivier to minimize the total duration. A standard method to discover new areas is to assign frontiers (boundaries between unexplored and explored accessible areas) to robots. In this context, the frontier allocation

  15. Project EARTH-11-DP1: Exploring early solar system processes using Cr isotopes

    E-Print Network [OSTI]

    Henderson, Gideon

    Project EARTH-11-DP1: Exploring early solar system processes using Cr isotopes Supervisors: Dr D Porcelli & Dr K Amor Various isotope methods have been recently developed to explore the conditions in the early solar system and the processes that have led to the formation of the terrestrial planets. Stable

  16. Laboratories to Explore, Explain VLBACHANDRA

    E-Print Network [OSTI]

    Technical Issues Divertor and PFCs Disruptions Vac Vessel Nuclear Heating Remote Handling Incorporate with some new methods of remote participation to improve future workshops. Remote particpants, please send as next step. · NRC Interim Report identified "integrated physics of a self-heated plasma" as one

  17. Final Report: Molecular Basis for Microbial Adhesion and Geochemical Surface Reactions: A Study Across Scales

    SciTech Connect (OSTI)

    Dixon, David Adams [The University of Alabama

    2013-06-27T23:59:59.000Z

    Computational chemistry was used to help provide a molecular level description of the interactions of Gram-negative microbial membranes with subsurface materials. The goal is to develop a better understanding of the molecular processes involved in microbial metal binding, microbial attachment to mineral surfaces, and, eventually, oxidation/reduction reactions (electron transfer) that can occur at these surfaces and are mediated by the bacterial exterior surface. The project focused on the interaction of the outer microbial membrane, which is dominated by an exterior lipopolysaccharide (LPS) portion, of Pseudomonas aeruginosa with the mineral goethite and with solvated ions in the environment. This was originally a collaborative project with T.P. Straatsma and B. Lowery of the Pacific Northwest National Laboratory. The University of Alabama effort used electronic structure calculations to predict the molecular behavior of ions in solution and the behavior of the sugars which form a critical part of the LPS. The interactions of the sugars with metal ions are expected to dominate much of the microscopic structure and transport phenomena in the LPS. This work, in combination with the molecular dynamics simulations of Straatsma and the experimental electrochemistry and microscopy measurements of Lowry, both at PNNL, is providing new insights into the detailed molecular behavior of these membranes in geochemical environments. The effort at The University of Alabama has three components: solvation energies and structures of ions in solution, prediction of the acidity of the critical groups in the sugars in the LPS, and binding of metal ions to the sugar anions. An important aspect of the structure of the LPS membrane as well as ion transport in the LPS is the ability of the sugar side groups such as the carboxylic acids and the phosphates to bind positively charged ions. We are studying the acidity of the acidic side groups in order to better understand the ability of these groups to bind metal ions. We need to understand the solvation properties of the metal ions in solution and their ability to bind not only to the sugars but to proteins and to other anions. Our goal is then to be able to predict the ability of the side groups to bind metal ions. One result from the earlier molecular dynamics simulations is the exclusion of water from the inner hydrophobic part of the membrane. We thus need to investigate the binding of the cations in media with different dielectric constants.

  18. Enterprise, Shell scheduled to explore Romanian acreage

    SciTech Connect (OSTI)

    Not Available

    1992-08-17T23:59:59.000Z

    This paper reports that the pace of exploration is packing up in Romania's offshore and onshore sectors. Enterprise Oil Exploration Ltd., London, signed an exploration and production sharing agreement with state owned Rompetrol SA for two Black Sea blocks, Nos. XIII and XV, covering 3,000 sq km and 4,000 sq km, respectively. Shell Romania Exploration BV agreed with Rompetrol on an exploration and production sharing agreement for onshore Block 10. This covers 6,150 sq km in northern Transylvania. Shell's target will be deep formations underlying producing gas zones. Enterprise has a 65% share as operator of Blocks XIII and XV, while partner CanadianOxy (Romania) Ltd. holds the remaining 35%. Exploration and development costs will be borne by the license partners, while Rompetrol will take a share of any production.

  19. Draft Innovative Exploration Technologies Needs Assessment |...

    Energy Savers [EERE]

    Program June 6 - 10, 2011 The Dixie Valley Geothermal Plant in Nevada produces 60 MW of electricity. A Roadmap for Strategic Development of Geothermal Exploration Technologies...

  20. Innovative Exploration Techniques for Geothermal Assessment at...

    Open Energy Info (EERE)

    determine the fracture surface area, heat content and heat transfer, flow rates, and chemistry of the geothermal fluids encountered by the exploration wells. - Write final report...

  1. Integrated Geoscience Investigation and Geothermal Exploration...

    Open Energy Info (EERE)

    Geoscience Investigation and Geothermal Exploration at Chena Hot Springs, Alaska Abstract This document represents the final report for Phase I of the Chena Hot Springs...

  2. Final Scientific - Technical Report, Geothermal Resource Exploration...

    Open Energy Info (EERE)

    Geothermal Resource Exploration Program, Truckhaven Area, Imperial County, California Abstract With financial support from the U.S. Department of Energy (DOE), Layman Energy...

  3. Draft Needs Assessment for Innovative Exploration Technologies...

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

    efforts to spur the U.S. geothermal industry to seek green field resources by lowering exploration risks and costs through research, development and demonstration. The...

  4. ITP Mining: Exploration and Mining Technology Roadmap

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

    disturbance. Low-Cost and Efficient Production- Use advanced technologies to improve process efficiencies from exploration to final product. Advanced Products- Maintain and...

  5. Geographic Information Systems- Tools For Geotherm Exploration...

    Open Energy Info (EERE)

    Systems- Tools For Geotherm Exploration, Tracers Data Analysis, And Enhanced Data Distribution, Visualization, And Management Jump to: navigation, search OpenEI Reference...

  6. Geological and geochemical aspects of uranium deposits. A selected, annotated bibliography

    SciTech Connect (OSTI)

    Garland, P.A.; Thomas, J.M.; Brock, M.L.; Daniel, E.W. (comps.)

    1980-06-01T23:59:59.000Z

    A bibliography of 479 references encompassing the fields of uranium and thorium geochemistry and mineralogy, geology of uranium deposits, uranium mining, and uranium exploration techniques has been compiled by the Ecological Sciences Information Center of Oak Ridge National Laboratory. The bibliography was produced for the National Uranium Resource Evaluation Program, which is funded by the Grand Junction Office of the Department of Energy. The references contained in the bibliography have been divided into the following eight subject categories: (1) geology of deposits, (2) geochemistry, (3) genesis O deposits, (4) exploration, (5) mineralogy, (6) uranium industry, (7) reserves and resources, and (8) geology of potential uranium-bearing areas. All categories specifically refer to uranium and thorium; the last category contains basic geologic information concerning areas which the Grand Junction Office feels are particularly favorable for uranium deposition. The references are indexed by author, geographic location, quadrangle name, geoformational feature, taxonomic name, and keyword.

  7. Geochemical characteristics of the Bulgarmarse Granite of the Fall River Pluton in the Avalonian Superterrane of southeastern New England

    SciTech Connect (OSTI)

    Mancuso, C.I.; Puffer, J.H. (Rutgers, The State Univ. of New Jersey, Newark, NJ (United States). Dept. of Geological Sciences)

    1993-03-01T23:59:59.000Z

    The 600 m.y. Bulgarmarsh Granite of the Fall River Pluton crops out along the SE margin of the Pennsylvanian-age Narragansett Basin in the Dedham terrane of the New England Avalonian Superterrane. The Bulgarmarsh is a coarse-grained, quartz-rich, very leucooratic granite, in which mafic minerals, generally less than 5--8%, occur chiefly as chlorite, biotite and garnet disequilibrium intergrowths. Most of the granite is very slightly deformed, but there are many localized zones of deformation, both brittle and plastic, that vary in degree of intensity. The Bulgarmarsh intrudes Basin margin metavolcanics similar to those of Price Neck Formation that crop out within the Basin in Newport and on Gould Island. The Bulgarmarsh Granite has many of the mineralogical and geochemical characteristics of an A-type granite. Its geochemistry places it in the post-orogenic classification of Maniar and Piccoli (1989). New major and minor element geochemical data clearly discriminate between the Bulgarmarsh Granite and the adjacent calc-alkaline Metacom Granite Gneiss. Avalonian Orogeny, occupying a place in geologic history similar to that of the Newport Granite.

  8. Preliminary delineation of natural geochemical reactions, Snake River Plain aquifer system, Idaho National Engineering Laboratory and vicinity, Idaho

    SciTech Connect (OSTI)

    Knobel, L.L.; Bartholomay, R.C.; Orr, B.R.

    1997-05-01T23:59:59.000Z

    The U.S. Geological Survey, in cooperation with the U.S. Department of Energy, is conducting a study to determine the natural geochemistry of the Snake River Plain aquifer system at the Idaho National Engineering Laboratory (INEL), Idaho. As part of this study, a group of geochemical reactions that partially control the natural chemistry of ground water at the INEL were identified. Mineralogy of the aquifer matrix was determined using X-ray diffraction and thin-section analysis and theoretical stabilities of the minerals were used to identify potential solid-phase reactants and products of the reactions. The reactants and products that have an important contribution to the natural geochemistry include labradorite, olivine, pyroxene, smectite, calcite, ferric oxyhydroxide, and several silica phases. To further identify the reactions, analyses of 22 representative water samples from sites tapping the Snake River Plain aquifer system were used to determine the thermodynamic condition of the ground water relative to the minerals in the framework of the aquifer system. Principal reactions modifying the natural geochemical system include congruent dissolution of olivine, diopside, amorphous silica, and anhydrite; incongruent dissolution of labradorite with calcium montmorillonite as a residual product; precipitation of calcite and ferric oxyhydroxide; and oxidation of ferrous iron to ferric iron. Cation exchange reactions retard the downward movement of heavy, multivalent waste constituents where infiltration ponds are used for waste disposal.

  9. Perception vs. reality in deepwater exploration

    SciTech Connect (OSTI)

    Shanmugam, G. [Mobil Exploration and Producing Technical Center, Dallas, TX (United States)

    1996-09-01T23:59:59.000Z

    The common perception in exploration is that deepwater sands are predominantly a product of turbidity currents, and that submarine-fan models with channel/levee and lobe elements are the norm. The reality, however, is that in many cases, deepwater sands are deposits of sandy debris flows and bottom currents, not turbidity currents. Submarine-fan models with channels and lobes are designed for turbidite-dominated deepwater systems, and therefore, fan models are obsolete for debris-flow deposits. The subject is described here in a discussion that covers: Deepwater processes. How sediments move downslope from the shelf, definitions, and misunderstood effects of high-density turbidity and bottom currents; Submarine fan models, and sequence stratigraphic implications. Limitations of widely used models, and seismic geometries and log motifs. Better calibrations are needed. In the conclusion, the author states a critical need for developing additional models for debris flows, and that research should also focus on developing reliable methods for using seismic geometry and wireline-log motifs to recognize depositional facies. A comprehensive bibliography of published literature on the subject is liberally referenced. In this paper, the term deep water refers to bathyal water depths, i.e., area seaward of the shelf edge, that existed at the time of deposition of reservoir sands; it does not necessarily refer to present-day water depths in offshore examples.

  10. From Question Answering to Visual Exploration

    SciTech Connect (OSTI)

    McColgin, Dave W.; Gregory, Michelle L.; Hetzler, Elizabeth G.; Turner, Alan E.

    2006-08-11T23:59:59.000Z

    Research in Question Answering has focused on the quality of information retrieval or extraction using the metrics of precision and recall to judge success; these metrics drive toward finding the specific best answer(s) and are best supportive of a lookup type of search. These do not address the opportunity that users? natural language questions present for exploratory interactions. In this paper, we present an integrated Question Answering environment that combines a visual analytics tool for unstructured text and a state-of-the-art query expansion tool designed to compliment the cognitive processes associated with an information analysts work flow. Analysts are seldom looking for factoid answers to simple questions; their information needs are much more complex in that they may be interested in patterns of answers over time, conflicting information, and even related non-answer data may be critical to learning about a problem or reaching prudent conclusions. In our visual analytics tool, questions result in a comprehensive answer space that allows users to explore the variety within the answers and spot related information in the rest of the data. The exploratory nature of the dialog between the user and this system requires tailored evaluation methods that better address the evolving user goals and counter cognitive biases inherent to exploratory search tasks.

  11. INEEL Subregional Conceptual Model Report Volume 2: Summary of Existing Knowledge of Geochemical Influences on the Fate and Transport of Contaminants in the Subsurface at the INEEL

    SciTech Connect (OSTI)

    Paul L. Wichlacz; Robert C. Starr; Brennon Orr

    2003-09-01T23:59:59.000Z

    This document summarizes previous descriptions of geochemical system conceptual models for the vadose zone and groundwater zone (aquifer) beneath the Idaho National Engineering and Environmental Laboratory (INEEL). The primary focus is on groundwater because contaminants derived from wastes disposed at INEEL are present in groundwater, groundwater provides a pathway for potential migration to receptors, and because geochemical characteristics in and processes in the aquifer can substantially affect the movement, attenuation, and toxicity of contaminants. The secondary emphasis is perched water bodies in the vadose zone. Perched water eventually reaches the regional groundwater system, and thus processes that affect contaminants in the perched water bodies are important relative to the migration of contaminants into groundwater. Similarly, processes that affect solutes during transport from nearsurface disposal facilities downward through the vadose zone to the aquifer are relevant. Sediments in the vadose zone can affect both water and solute transport by restricting the downward migration of water sufficiently that a perched water body forms, and by retarding solute migration via ion exchange. Geochemical conceptual models have been prepared by a variety of researchers for different purposes. They have been published in documents prepared by INEEL contractors, the United States Geological Survey (USGS), academic researchers, and others. The documents themselves are INEEL and USGS reports, and articles in technical journals. The documents reviewed were selected from citation lists generated by searching the INEEL Technical Library, the INEEL Environmental Restoration Optical Imaging System, and the ISI Web of Science databases. The citation lists were generated using the keywords ground water, groundwater, chemistry, geochemistry, contaminant, INEL, INEEL, and Idaho. In addition, a list of USGS documents that pertain to the INEEL was obtained and manually searched. The documents that appeared to be the most pertinent were selected from further review. These documents are tabulated in the citation list. This report summarizes existing geochemical conceptual models, but does not attempt to generate a new conceptual model or select the ''right'' model. This document is organized as follows. Geochemical models are described in general in Section 2. Geochemical processes that control the transport and fate of contaminants introduced into groundwater are described in Section 3. The natural geochemistry of the Eastern Snake River Plain Aquifer (SRPA) is described in Section 4. The effect of waste disposal on the INEEL subsurface is described in Section 5. The geochemical behavior of the major contaminants is described in Section 6. Section 7 describes the site-specific geochemical models developed for various INEEL facilities.

  12. Aluminum: Principled Scenario Exploration through Minimality

    E-Print Network [OSTI]

    Dougherty, Daniel J.

    Aluminum: Principled Scenario Exploration through Minimality Tim Nelson1, Salman Saghafi1, Daniel J. We present Aluminum, a modification of Alloy that presents only minimal scenarios: those that contain no more than is necessary. Aluminum lets users explore the scenario space by adding to scenarios

  13. Aluminum: Principled Scenario Exploration through Minimality

    E-Print Network [OSTI]

    Krishnamurthi, Shriram

    Aluminum: Principled Scenario Exploration through Minimality Tim Nelson1, Salman Saghafi1, Daniel J Aluminum, a modification of Alloy that presents only minimal scenarios: those that contain no more than is necessary. Aluminum lets users explore the scenario space by adding to scenarios and backtracking. It also

  14. Automated Architectural Exploration for Signal Processing Algorithms

    E-Print Network [OSTI]

    Davis, Rhett

    Automated Architectural Exploration for Signal Processing Algorithms Ramsey Hourani, Ravi Jenkal, W processing algorithms. The goal of our framework is to improve hardware architectural exploration by guiding Property (IP) cores for system level signal processing algorithms. We present our view of a framework

  15. Edinburgh Research Explorer Probabilistic Programming Process Algebra

    E-Print Network [OSTI]

    Millar, Andrew J.

    Edinburgh Research Explorer Probabilistic Programming Process Algebra Citation for published version: Georgoulas, A, Hillston, J, Milios, D & Sanguinetti, G 2014, 'Probabilistic Programming Process.1007/978-3-319-10696-0_21 Link: Link to publication record in Edinburgh Research Explorer Document Version: Preprint (usually

  16. Nuclear Engineering Division Think, explore, discover, innovate

    E-Print Network [OSTI]

    Kemner, Ken

    Nuclear Engineering Division Think, explore, discover, innovate Never miss important updates managed by UChicago Argonne, LLC 1 Nuclear Engineering Division: Awards Listing (1980 ­ present) Web: http Division of Educational Programs J.C. Braun L.W. Deitrich #12;Nuclear Engineering Division Think, explore

  17. Back to Exploration 2008 CSPG CSEG CWLS Convention 1 A Computational Model of Catalyzed Carbon Sequestration

    E-Print Network [OSTI]

    Spiteri, Raymond J.

    explores the feasibility of catalysis-based carbon sequestration by efficiently and accurately modeling that this method can be scaled to accurately predict the efficacy of such systems for carbon sequestration to help find the most cost effective methods possible. Most carbon sequestration methods are capture

  18. ADULT ATTACHMENT AND EXPLORATION: THE EFFECT OF ATTACHMENT STYLE ON THE EXPERIENCE OF EXPLORATION

    E-Print Network [OSTI]

    Martin, Archibald M.

    2010-07-14T23:59:59.000Z

    According to attachment theory a key moderator in the enjoyment of exploration is the strength of a person's secure base. To study exploration we placed participants in a situation in which they confronted a novel stimulus. We also gathered self...

  19. Exploring the Raft River geothermal area, Idaho, with the dc...

    Open Energy Info (EERE)

    SURVEYS; IDAHO; GEOTHERMAL EXPLORATION; RAFT RIVER VALLEY; ELECTRIC CONDUCTIVITY; GEOTHERMAL WELLS; KGRA; TEMPERATURE MEASUREMENT; ELECTRICAL PROPERTIES; EXPLORATION; GEOPHYSICAL...

  20. Geochemical Characterization of Chromate Contamination in the 100 Area Vadose Zone at the Hanford Site

    SciTech Connect (OSTI)

    Dresel, P. Evan; Qafoku, Nikolla; McKinley, James P.; Fruchter, Jonathan S.; Ainsworth, Calvin C.; Liu, Chongxuan; Ilton, Eugene S.; Phillips, J. L.

    2008-07-16T23:59:59.000Z

    The major objectives of the proposed study were to: 1.) determine the leaching characteristics of hexavalent chromium [Cr(VI)] from contaminated sediments collected from 100 Area spill sites; 2.) elucidate possible Cr(VI) mineral and/or chemical associations that may be responsible for Cr(VI) retention in the Hanford Site 100 Areas through the use of i.) macroscopic leaching studies and ii.) microscale characterization of contaminated sediments; and 3.) provide information to construct a conceptual model of Cr(VI) geochemistry in the Hanford 100 Area vadose zone. In addressing these objectives, additional benefits accrued were: (1) a fuller understanding of Cr(VI) entrained in the vadose zone that will that can be utilized in modeling potential Cr(VI) source terms, and (2) accelerating the Columbia River 100 Area corridor cleanup by providing valuable information to develop remedial action based on a fundamental understanding of Cr(VI) vadose zone geochemistry. A series of macroscopic column experiments were conducted with contaminated and uncontaminated sediments to study Cr(VI) desorption patterns in aged and freshly contaminated sediments, evaluate the transport characteristics of dichromate liquid retrieved from old pipelines of the 100 Area; and estimate the effect of strongly reducing liquid on the reduction and transport of Cr(VI). Column experiments used the < 2 mm fraction of the sediment samples and simulated Hanford groundwater solution. Periodic stop-flow events were applied to evaluate the change in elemental concentration during time periods of no flow and greater fluid residence time. The results were fit using a two-site, one dimensional reactive transport model. Sediments were characterized for the spatial and mineralogical associations of the contamination using an array of microscale techniques such as XRD, SEM, EDS, XPS, XMP, and XANES. The following are important conclusions and implications. Results from column experiments indicated that most of contaminant Cr travels fast through the sediments and appears as Cr(VI) in the effluents. The significance of this for groundwater concentrations would, however, depend on the mass flux of recharge to the water table. adsorption of Cr(VI) to sediments from spiked Cr(VI) solution is low; calculated retardation coefficients are close to one. Calcium polysulfide solutions readily reduced Cr(VI) to Cr(III) in column experiments. However a significant amount of the Cr(VI) was mobilized ahead of the polysulfide solution front. This has significant implications for in-situ reductive remediation techniques. The experiments suggest that it would be difficult to design a remedial measure using infiltration of liquid phase reductants without increasing transport of Cr(VI) toward the water table. The microscopic characterization results are consistent with the column studies. Cr(VI) is found as ubiquitous coatings on sediment grain surfaces. Small, higher concentration, chromium sites are associated with secondary clay mineral inclusions, with occasional barium chromate minerals, and reduced to Cr(III) in association with iron oxides that are most likely magnetite primary minerals. Within the restricted access domains of sediment matrix, ferrous iron could also diffuse from in situ, high-surface-area minerals to cause the reductive immobilization of chromate. This process may be favored at microscale geochemical zones where ferrous iron could be supplied. Once nucleated, micrometer-scale precipitates are favored as growing locales for further accumulation, causing the formation of discrete zones of Cr(III).

  1. Exploring Dark Energy with SNAP

    E-Print Network [OSTI]

    G. Aldering

    2005-07-19T23:59:59.000Z

    The accelerating expansion of the Universe is one of the most surprising and potentially profound discoveries of modern cosmology. Measuring the acceleration well enough to meaningfully constrain interesting physical models requires improvements an order of magnitude beyond on-going and near-term experiments. The Supernova/Acceleration Probe (SNAP) has been conceived as a powerful yet simple experiment to use Type Ia supernovae and weak gravitational lensing to reach this level of accuracy. As fundamentally different causes for the acceleration map into very small differences in observational parameters for all relevant cosmological methods, control of systematics is especially important and so has been built into the SNAP mission design from the very beginning.

  2. Geological and geochemical aspects of uranium deposits: a selected, annotated bibliography. [474 references

    SciTech Connect (OSTI)

    Thomas, J.M.; Garland, P.A.; White, M.B.; Daniel, E.W.

    1980-09-01T23:59:59.000Z

    This bibliography, a compilation of 474 references, is the fourth in a series compiled from the National Uranium Resource Evaluation (NURE) Bibliographic Data Base. This data base was created for the Grand Junction Office of the Department of Energy's National Uranium Resource Evaluation Project by the Ecological Sciences Information Center, Oak Ridge National Laboratory. The references in the bibliography are arranged by subject category: (1) geochemistry, (2) exploration, (3) mineralogy, (4) genesis of deposits, (5) geology of deposits, (6) uranium industry, (7) geology of potential uranium-bearing areas, and (8) reserves and resources. The references are indexed by author, geographic location, quadrangle name, geoformational feature, and keyword.

  3. Trace Element Geochemical Zoning in the Roosevelt Hot Springs Thermal Area,

    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 Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-gTaguspark JumpDetective:Toyo Aluminium KK Jump to:

  4. Geochemical Data for 95 Thermal and Nonthermal Waters of the Valles Caldera

    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 CenterFranconia, Virginia: Energy Resources Jump to: navigation, searchGeauga County, Ohio: EnergySector: SolarGenoa is aGeo Exploration-

  5. ULYSSES BEGINS EXPLORATION OF THE SUN'S NORTHERN POLE The Ulysses spacecraft has begun to explore the

    E-Print Network [OSTI]

    Christian, Eric

    ULYSSES BEGINS EXPLORATION OF THE SUN'S NORTHERN POLE The Ulysses spacecraft has begun to explore the northern pole of the Sun, initiating the second phase of its primary mission to study regions above and below the Sun never before explored by spacecraft. Ulysses, a joint NASA-European Space Agency mission

  6. Geochemical monitoring at Soultz-sous-Forts (France) between October 2006 and March 2007 1 EC Contract SES6-CT-2003-502706

    E-Print Network [OSTI]

    Boyer, Edmond

    presents the main results obtained during the geochemical monitoring of the fluids and deposits collected of the fractured areas, and recovering significant amounts of drilling wastes (grease, rests of cuttings), rock was initiated in 2001. Three wells, drilled at a depth of about 5000 m, must make up the heat exchanger. GPK-3

  7. Actualistic and Geochemical Modeling of Reservoir Rock, CO2 and Formation Fluid Interaction, Citronelle Oil Field, Alabama

    SciTech Connect (OSTI)

    Weislogel, Amy

    2014-01-31T23:59:59.000Z

    This report includes description of the Citronelle field study area and the work carried out in the project to characterize the geology and composition of reservoir rock material and to collect an analyze the geochemical composition of produced fluid waters from the Citronelle field. Reservoir rock samples collected from well bore core were made into thin-sections and assessed for textural properties, including pore types and porosity distribution. Compositional framework grain modal data were collected via point-counting, and grain and cement mineralogy was assessed using SEM-EDS. Geochemistry of fluid samples is described and modeled using PHREEQC. Composition of rock and produced fluids were used as inputs for TOUGHREACT reactive transport modeling, which determined the rock-fluid system was in disequilibrium.

  8. Data Package of Samples Collected for Hydrogeologic and Geochemical Characterization: 300 Area RI/FS Sediment Cores

    SciTech Connect (OSTI)

    Lindberg, Michael J.; Bjornstad, Bruce N.; Lanigan, David C.; Williams, Benjamin D.

    2011-05-01T23:59:59.000Z

    This is a data package for sediment samples received from the 300 FF 5 OU. This report was prepared for CHPRC. Between August 16, 2010 and April 25, 2011 sediment samples were received from 300-FF-5 for geochemical studies. The analyses for this project were performed at the 331 building located in the 300 Area of the Hanford Site. The analyses were performed according to Pacific Northwest National Laboratory (PNNL) approved procedures and/or nationally recognized test procedures. The data sets include the sample identification numbers, analytical results, estimated quantification limits (EQL), and quality control data. The preparatory and analytical quality control requirements, calibration requirements, acceptance criteria, and failure actions are defined in the on-line QA plan 'Conducting Analytical Work in Support of Regulatory Programs' (CAW). This QA plan implements the Hanford Analytical Services Quality Assurance Requirements Documents (HASQARD) for PNNL.

  9. HOW GREEN IS JUDAISM? EXPLORING JEWISH ENVIRONMENTAL

    E-Print Network [OSTI]

    Kammen, Daniel M.

    HOW GREEN IS JUDAISM? EXPLORING JEWISH ENVIRONMENTAL ETHICS David Vogel Haas School of Business "green" and "non-green' elements. It is both inappropriate to over-emphasize the former, as have some and social values. The tea

  10. Posters | Posters --721 Exploring lighting cultures

    E-Print Network [OSTI]

    Boyer, Edmond

    Posters | Posters -- 721 Exploring lighting cultures Beyond light and emotions Vincent LAGANIER 1 , Jasmine van der POL 2 1. Lighting Applications Services (LiAS), Philips Lighting, France vincent.laganier@philips.com 2

  11. Cognitive Medium Access: Exploration, Exploitation and Competition

    E-Print Network [OSTI]

    El-Gamal, Hesham

    1 Cognitive Medium Access: Exploration, Exploitation and Competition Lifeng Lai, Hesham El Gamal, Hai Jiang and H. Vincent Poor Abstract-- This paper establishes the equivalence between cognitive cognitive user wishes to opportunistically exploit the availability of empty fre- quency bands

  12. Wind Power Integration: Exploring Impacts and Alternatives

    E-Print Network [OSTI]

    Walter, M.Todd

    Wind Power Integration: Exploring Impacts and Alternatives Assist. Prof. C sustainable sources of energy. The idea of harnessing wind energy has been there have been no less than fifteen in-depth wind integration studies

  13. Edinburgh Research Explorer The Managed Prosumer

    E-Print Network [OSTI]

    Millar, Andrew J.

    Edinburgh Research Explorer The Managed Prosumer Citation for published version: Johnson, M, Mozaffar, H, Campagnolo, GM, Hyysalo, S, Pollock, N & Williams, R 2014, 'The Managed Prosumer: Evolving. M., Hyysalo, S., Pollock, N., & Williams, R. (2014). The Managed Prosumer: Evolving Knowledge

  14. Edinburgh Research Explorer Flights of Fancy

    E-Print Network [OSTI]

    Millar, Andrew J.

    of this data were explored through processes of 3D printing and 2D pattern making and digital video Messenger (2012) installation at Tatton Park Biennial, 2012 The production of miniature 3D prints

  15. The Mission of the Mars Exploration Rovers

    ScienceCinema (OSTI)

    John Grant

    2010-01-08T23:59:59.000Z

    The Mars Exploration Rover mission was expected to last 3 months, but has continued for more than 4 years. The major science results from both rovers will be summarized.

  16. Design exploration through bidirectional modeling of constraints

    E-Print Network [OSTI]

    Kilian, Axel, 1971-

    2006-01-01T23:59:59.000Z

    Today digital models for design exploration are not used to their full potential. The research efforts in the past decades have placed geometric design representations firmly at the center of digital design environments. ...

  17. Adventures in supercomputing: Scientific exploration in an era of change

    SciTech Connect (OSTI)

    Gentry, E. [Univ. of Alabama, Huntsville, AL (United States); Helland, B. [Krell Institute, Ames, IA (United States); Summers, B. [Oak Ridge National Lab., TN (United States)

    1997-11-01T23:59:59.000Z

    Students deserve the opportunity to explore the world of science surrounding them. Therefore it is important that scientific exploration and investigation be a part of each student`s educational career. The Department of Energy`s Adventures in Superconducting (AiS) takes students beyond mere scientific literacy to a rich embodiment of scientific exploration. AiS provides today`s science and math students with a greater opportunity to investigate science problems, propose solutions, explore different methods of solving the problem, organize their work into a technical paper, and present their results. Students learn at different rates in different ways. Science classes with students having varying learning styles and levels of achievement have always been a challenge for teachers. The AiS {open_quotes}hands-on, minds-on{close_quotes} project-based method of teaching science meets the challenge of this diversity heads on! AiS uses the development of student chosen projects as the means of achieving a lifelong enthusiasm for scientific proficiency. One goal of AiS is to emulate the research that takes place in the everyday environment of scientists. Students work in teams and often collaborate with students nationwide. With the help of mentors from the academic and scientific community, students pose a problem in science, investigate possible solutions, design a mathematical and computational model for the problem, exercise the model to achieve results, and evaluate the implications of the results. The students then have the opportunity to present the project to their peers, teachers, and scientists. Using this inquiry-based technique, students learn more than science skills, they learn to reason and think -- going well beyond the National Science Education Standard. The teacher becomes a resource person actively working together with the students in their quest for scientific knowledge.

  18. Topographic and Air-Photo Lineaments in Various Locations Related to Geothermal Exploration in Colorado

    SciTech Connect (OSTI)

    Zehner, Richard

    2012-02-01T23:59:59.000Z

    Title: Topographic and Air-Photo Lineaments in Various Locations Related to Geothermal Exploration in Colorado Tags: Colorado, lineaments, air-photo, geothermal Summary: These line shapefiles trace apparent topographic and air-photo lineaments in various counties in Colorado. It was made in order to identify possible fault and fracture systems that might be conduits for geothermal fluids, as part of a DOE reconnaissance geothermal exploration program. Description: Geothermal fluids commonly utilize fault and fractures in competent rocks as conduits for fluid flow. Geothermal exploration involves finding areas of high near-surface temperature gradients, along with a suitable “plumbing system” that can provide the necessary permeability. Geothermal power plants can sometimes be built where temperature and flow rates are high. This line shapefile is an attempt to use desktop GIS to delineate possible faults and fracture orientations and locations in highly prospective areas prior to an initial site visit. Geochemical sampling and geologic mapping could then be centered around these possible faults and fractures. To do this, georeferenced topographic maps and aerial photographs were utilized in an existing GIS, using ESRI ArcMap 10.0 software. The USA_Topo_Maps and World_Imagery map layers were chosen from the GIS Server at server.arcgisonline.com, using a UTM Zone 13 NAD27 projection. This line shapefile was then constructed over that which appeared to be through-going structural lineaments in both the aerial photographs and topographic layers, taking care to avoid manmade features such as roads, fence lines, and utility right-of-ways. Still, it is unknown what actual features these lineaments, if they exist, represent. Although the shapefiles are arranged by county, not all areas within any county have been examined for lineaments. Work was focused on either satellite thermal infrared anomalies, known hot springs or wells, or other evidence of geothermal systems. Finally, lineaments may be displaced somewhat from their actual location, due to such factors as shadow effects with low sun angles in the aerial photographs. Projection Information: UTM Zone 13 NAD 27 projection Credits: These lineament shapefile was created by Geothermal Development Associates, as part of a geothermal geologic reconnaissance performed by Flint Geothermal, LLC, of Denver Colorado. Funding was provided in part by DOE Grant DE-EEE0002828. Use Limitation These shapefiles was constructed as an aid to geothermal exploration in preparation for a site visit for field checking. We make no claims as to the existence of the lineaments, their location, orientation, and/or nature.

  19. Exploration trends of the Sirte Basin

    SciTech Connect (OSTI)

    Aburawi, R.M. [Waha Oil Co., Tripoli (Libyan Arab Jamahiriya)

    1995-08-01T23:59:59.000Z

    A wave of intense exploration activity in the Sirte Basin began after the discovery of oil in 1958, and an enormous quantity of hydrocarbon was found in less than ten years. The oil discovery rate has been gradually declining since its peak in the 1960`s, and it is now becoming increasingly difficult and more expensive to find a new reserve. This paper is an attempt to discuss briefly the past exploration cycle, to indicate the present position and to predict the future trend of our activities in the Sirte Basin. The past exploration activities in the Sirte Basin were concentrated along the particular geological trends where the possibilities of finding more reserves are now drastically reduced. Therefore, for the future healthy exploration activities, new ideas are needed to bring about some new favourable areas under further investigation. A new cycle of exploration success will emerge if our exploratory efforts are purposely directed towards the stratigraphic, stratrigraphic/structural traps and subtle type traps, along the migrational pathways and deep plays in the potential oil generative areas.

  20. MATHEMATICS AND COMPUTER SCIENCE: EXPLORING A SYMBIOTIC RELATIONSHIP

    E-Print Network [OSTI]

    Simonson, Shai

    MATHEMATICS AND COMPUTER SCIENCE: EXPLORING A SYMBIOTIC RELATIONSHIP Authors: Ralph Bravaco Shai, Fractals, Chaos, Number Theory and Cryptography, Problem Solving, Other #12;Mathematics and Computer Science: Exploring a Symbiotic Relationship 1 MATHEMATICS AND COMPUTER SCIENCE: EXPLORING A SYMBIOTIC

  1. Property:ExplorationBasis | 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 Home5b9fcbce19 No revisionEnvReviewNonInvasiveExploration Jump to: navigation, searchEstimatedTimeMedian JumpExplorationBasis Jump

  2. Property:ExplorationNotes | 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 Home5b9fcbce19 No revisionEnvReviewNonInvasiveExploration Jump to: navigation, searchEstimatedTimeMedianExplorationNotes Jump to:

  3. Property:ExplorationOutcome | 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 Home5b9fcbce19 No revisionEnvReviewNonInvasiveExploration Jump to: navigation, searchEstimatedTimeMedianExplorationNotes Jump

  4. SciTech Connect: Explore by Subject

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmitted for USMaterialstheterahertzonExplore by Subject Explore by

  5. Dental optical coherence domain reflectometry explorer

    DOE Patents [OSTI]

    Everett, Matthew J. (Livermore, CA); Colston, Jr., Billy W. (Livermore, CA); Sathyam, Ujwal S. (Livermore, CA); Da Silva, Luiz B. (Pleasanton, CA)

    2001-01-01T23:59:59.000Z

    A hand-held, fiber optic based dental device with optical coherence domain reflectometry (OCDR) sensing capabilities provides a profile of optical scattering as a function of depth in the tissue at the point where the tip of the dental explorer touches the tissue. This system provides information on the internal structure of the dental tissue, which is then used to detect caries and periodontal disease. A series of profiles of optical scattering or tissue microstructure are generated by moving the explorer across the tooth or other tissue. The profiles are combined to form a cross-sectional, or optical coherence tomography (OCT), image.

  6. The geological and geochemical study of the mud volcanoes of Azerbaijan

    SciTech Connect (OSTI)

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

    1995-08-01T23:59:59.000Z

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

  7. Mercury Geochemical, Groundwater Geochemical, And Radiometric Geophysical

    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 Home5b9fcbce19 No revision hasInformation Earth's Heat JumpIncMAKGalwayHydrothermalMcFarlandSurvey Professional Paper 713 |

  8. Exploring the Deep... Exploring the Ocean Environment Unit 1The Ocean Basins

    E-Print Network [OSTI]

    Wright, Dawn Jeannine

    GEO/OC 103 Exploring the Deep... Lab 2 #12;Exploring the Ocean Environment Unit 1­The Ocean Basins Ocean origins 19 How did the oceans form? Scientists believe that the oceans developed early ). This early atmosphere reflected much of the solar radiation striking Earth, allowing the surface to cool

  9. Exploring Hydrogen Generation from Biomass-Derived Sugar and...

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

    Exploring Hydrogen Generation from Biomass-Derived Sugar and Sugar Alcohols to Reduce Costs Exploring Hydrogen Generation from Biomass-Derived Sugar and Sugar Alcohols to Reduce...

  10. Building America Expert Meeting: Exploring the Disconnect Between...

    Energy Savers [EERE]

    Exploring the Disconnect Between Rated and Field Performance of Water Heating Systems Building America Expert Meeting: Exploring the Disconnect Between Rated and Field Performance...

  11. DOE Leverages Fossil Energy Expertise to Develop And Explore...

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

    DOE Leverages Fossil Energy Expertise to Develop And Explore Geothermal Energy Resources DOE Leverages Fossil Energy Expertise to Develop And Explore Geothermal Energy Resources...

  12. 2014 call for the NERSC Initiative for Scientific Exploration...

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

    the NERSC Initiative for Scientific Exploration (NISE) program 2014 Call for NERSC Initiative for Scientific Exploration (NISE) Program Due December 8 November 18, 2013 by...

  13. Idaho Geological Survey and University of Idaho Explore for Geothermal...

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

    Idaho Geological Survey and University of Idaho Explore for Geothermal Energy Idaho Geological Survey and University of Idaho Explore for Geothermal Energy January 11, 2013 -...

  14. Energy Department Launches Web Tool to Explore Pathways to Clean...

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

    Energy Department Launches Web Tool to Explore Pathways to Clean Energy Economy Energy Department Launches Web Tool to Explore Pathways to Clean Energy Economy January 15, 2013 -...

  15. Atomic Energy Commission Explores Peaceful Uses of Nuclear Explosions...

    National Nuclear Security Administration (NNSA)

    Our Jobs Working at NNSA Blog Home About Us Our History NNSA Timeline Atomic Energy Commission Explores Peaceful Uses of ... Atomic Energy Commission Explores Peaceful...

  16. Low Cost Exploration, Testing, And Development Of The Chena Geothermal...

    Open Energy Info (EERE)

    Paper: Low Cost Exploration, Testing, And Development Of The Chena Geothermal Resource Abstract The Chena Hot Springs geothermal field was intensively explored, tested, and...

  17. Petroleum Exploration Enhancement Program (Newfoundland and Labrador, Canada)

    Broader source: Energy.gov [DOE]

    The Provincial Energy Plan, released in September 2007, introduced a policy action to encourage and promote exploration activity in Western Newfoundland known as the Petroleum Exploration...

  18. Exploring the interaction between lithium ion and defective graphene...

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

    Exploring the interaction between lithium ion and defective graphene surface using dispersion corrected DFT studies. Exploring the interaction between lithium ion and defective...

  19. Reactive geochemical transport simulation to study mineral trapping for CO2 disposal in deep saline arenaceous aquifers

    SciTech Connect (OSTI)

    Xu, Tianfu; Apps, John A.; Pruess, Karsten

    2002-04-01T23:59:59.000Z

    A reactive fluid flow and geochemical transport numerical model for evaluating long-term CO{sub 2} disposal in deep aquifers has been developed. Using this model, we performed a number of sensitivity simulations under CO{sub 2} injection conditions for a commonly encountered Gulf Coast sediment to analyze the impact of CO{sub 2} immobilization through carbonate precipitation. Geochemical models are needed because alteration of the predominant host rock aluminosilicate minerals is very slow and is not amenable to laboratory experiment under ambient deep-aquifer conditions. Under conditions considered in our simulations, CO{sub 2} trapping by secondary carbonate minerals such as calcite (CaCO{sub 3}), dolomite (CaMg(CO{sub 3}){sub 2}), siderite (FeCO{sub 3}), and dawsonite (NaAlCO{sub 3}(OH){sub 2}) could occur in the presence of high pressure CO{sub 2}. Variations in precipitation of secondary carbonate minerals strongly depend on rock mineral composition and their kinetic reaction rates. Using the data presented in this paper, CO{sub 2} mineral-trapping capability after 10,000 years is comparable to CO{sub 2} dissolution in pore waters (2-5 kg CO{sub 2} per cubic meter of formation). Under favorable conditions such as increase of the Mg-bearing mineral clinochlore (Mg{sub 5}Al{sub 2}Si{sub 3}O{sub 10}(OH){sub 8}) abundance, the capacity can be larger (10 kg CO{sub 2} per cubic meter of formation) due to increase of dolomite precipitation. Carbon dioxide-induced rock mineral alteration and the addition of CO{sub 2} mass as secondary carbonates to the solid matrix results in decreases in porosity. A maximum 3% porosity decrease is obtained in our simulations. A small decrease in porosity may result in a significant decrease in permeability. The numerical simulations described here provide useful insight into sequestration mechanisms, and their controlling conditions and parameters.

  20. Business Exploration Series SkillSoft's latest content innovation, the Business Exploration Series, was designed to be visually rich and

    E-Print Network [OSTI]

    Maryland, Baltimore County, University of

    Business Exploration Series SkillSoft's latest content innovation, the Business Exploration Series to our Business Skills Courseware Library. The Business Exploration Series provides learners two different learning assets: Business Impact Series Challenge Series Analyze frequently encountered

  1. Indiana Energy Conference "Exploring Emerging Energy Issues"

    E-Print Network [OSTI]

    Ginzel, Matthew

    Indiana Energy Conference "Exploring Emerging Energy Issues" Wednesday, October 3, 2012 University. Speakers/Panelists: Bernie Paul, Energy Consultant John Kinsman, Edison Electric Institute Are They Moving the U.S. Beyond Coal? Are regulations from the EPA moving too quickly and leading us away from coal

  2. Orion Flight Test Exploration Flight Test-1

    E-Print Network [OSTI]

    Waliser, Duane E.

    Orion Flight Test Exploration Flight Test-1 PRESS KIT/December 2014 www.nasa.gov NP-2014-11-020-JSC National Aeronautics and Space Administration #12;#12;Orion Flight Test December 2014 Contents Section Page ........................................................................................... 28 i #12;Orion Flight Test ii December 2014 #12;Orion Flight Test December 2014 Flight Overview

  3. Edinburgh Research Explorer Agile Business Model Innovation

    E-Print Network [OSTI]

    Millar, Andrew J.

    Edinburgh Research Explorer Agile Business Model Innovation Citation for published version: Bock, A & Gerard, G 2014, 'Agile Business Model Innovation' The European Business Review, vol May - June 2014. Link Publisher Rights Statement: © Bock, A., & Gerard, G. (2014). Agile Business Model Innovation. The European

  4. Exploration and project management Sylvain Lenfle

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to manage innovation. We argue that, in line with the work on project classification, a distinction should1 Exploration and project management Sylvain Lenfle University of Cergy-Pontoise Management of Project Management, Vol. 6, n°5, p. 469-478, July. Abstract Project management in academic studies tends

  5. Exploring Low Emission Lubricants for Diesel Engines

    SciTech Connect (OSTI)

    Perez, J. M.

    2000-07-06T23:59:59.000Z

    A workshop to explore the technological issues involved with the removal of sulfur from lubricants and the development of low emission diesel engine oils was held in Scottsdale, Arizona, January 30 through February 1, 2000. It presented an overview of the current technology by means of panel discussions and technical presentations from industry, government, and academia.

  6. Global Food Security Programme Exploring public views

    E-Print Network [OSTI]

    Global Food Security Programme ­ Exploring public views #12;©TNS June 2012 -1- Executive Summary significant public policy issues of this century. This scoping study for the Global Food Security programme. The project involved a total of 44 people in a two stage workshop process in London, Edinburgh and Aberystwyth

  7. EXPLORING EARTH'S MYSTERIES ...PROTECTING ITS FUTURE

    E-Print Network [OSTI]

    2002 BNL Groundwater Status Report TABLE OF CONTENTS EXECUTIVE SUMMARY 1.0 INTRODUCTION AND OBJECTIVES ............................................................................................3-1 3.0.1 Model Assessment of BNL Groundwater Pump and Treat System Performance#12;EXPLORING EARTH'S MYSTERIES ...PROTECTING ITS FUTURE 2002 BNL GROUNDWATER STATUS REPORT July 29

  8. Water information bulletin No. 30: geothermal investigations in Idaho. Part 11. Geological, hydrological, geochemical and geophysical investigations of the Nampa-Caldwell and adjacent areas, southwestern Idaho

    SciTech Connect (OSTI)

    Mitchell, J.C. (ed.)

    1981-12-01T23:59:59.000Z

    The area under study included approximately 925 sq km (357 sq mi) of the Nampa-Caldwell portion of Canyon County, an area within the central portion of the western Snake River Plain immediately west of Boise, Idaho. Geologic mapping, hydrologic, geochemical, geophysical, including detailed gravity and aeromagnetic surveys, were run to acquire needed data. In addition, existing magnetotelluric and reflection seismic data were purchased and reinterpreted in light of newly acquired data.

  9. Characterization of the geochemical and physical properties of wetland soils on the Savannah River Site: Field sampling activities. Final report

    SciTech Connect (OSTI)

    Dixon, K.L. [Westinghouse Savannah River Co., Aiken, SC (United States)

    1992-11-01T23:59:59.000Z

    There are 36,000 acres of wetlands on the Savannah River Site (SRS) and an additional 5,000 acres of floodplain. Recent studies of wetland soils near various waste sites at SRS have shown that some wetlands have been contaminated with pollutants resulting from SRS operations. In general, releases of contaminants to wetland areas have been indirect. These releases may have originated at disposal lagoons or waste facilities located in the vicinity of the wetland areas. Transport mechanisms such as surface runoff, soil erosion, sediment transport, and groundwater seepage into downgradient wetland areas are responsible for the indirect discharges to the wetland areas. The SRS determined that a database of background geochemical and physical properties for wetland soils on the SRS was needed to facilitate future remedial investigations, human health and ecological risk assessments, treatability studies, and feasibility studies for the wetland areas. These data are needed for comparison to contaminant data collected from wetland soils that have been affected by contamination from SRS operations. This report describes the efforts associated with the collection of soil cores, preparation of a lithologic log for each core, and the processing and packaging of individual soil samples for shipment to analytical laboratory facilities.

  10. National Aeronautics and Space Administration Advanced Exploration Systems

    E-Print Network [OSTI]

    Waliser, Duane E.

    and transform skills. Infuse new technologies developed by STMD into exploration missions. Support robotic

  11. As of October 17, 2012 Solar System Exploration @50

    E-Print Network [OSTI]

    :45 ­ 11:45 am Panel #1: Politics and Policy in the Conduct of Solar System Exploration Panel Chair: Marcia, and Solar System Exploration Panel Chair: Heidi Hammel (Association of Universities for Research And Mars: The Soviet Planetary Exploration Enterprise 9:30 ­ 11:30 am Panel 4: Exploring the Outer Solar

  12. Towards Large-Scale Multimedia Exploration Christian Beecks

    E-Print Network [OSTI]

    Skopal, Tomas

    , and frequently support the exploration process by means of attractive interactive graphical user interfaces exploration systems fol- low the same general structure of an exploration process [5], which is illustrated in Figure 2. The exploration process is initialized by mapping a meaningful subset of d

  13. National Aeronautics and Space Administration Advanced Exploration Systems

    E-Print Network [OSTI]

    Waliser, Duane E.

    National Aeronautics and Space Administration Advanced Exploration Systems NASA Advisory Council · Exploration Committee December 10, 2013 Jason Crusan, Director, Advanced Exploration Systems Human Exploration and Operations Mission Directorate · NASA Headquarters #12;2 Topics · HEOMD Investment Prioritization Process

  14. Marine geochemical data assimilation in an efficient Earth System Model of global biogeochemical cycling

    E-Print Network [OSTI]

    A. Ridgwell; J. C. Hargreaves; N. R. Edwards; J. D. Annan; T. M. Lenton; R. Marsh; A. Yool; A. Watson

    2006-01-01T23:59:59.000Z

    Abstract. We have extended the 3-D ocean based “Grid ENabled Integrated Earth system model ” (GENIE-1) to help understand the role of ocean biogeochemistry and marine sediments in the long-term (?100 to 100 000 year) regulation of atmospheric CO2, and the importance of feedbacks between CO2 and climate. Here we describe the ocean carbon cycle, which in its first incarnation is based around a simple single nutrient (phosphate) control on biological productivity. The addition of calcium carbonate preservation in deep-sea sediments and its role in regulating atmospheric CO2 is presented elsewhere (Ridgwell and Hargreaves, 2007). We have calibrated the model parameters controlling ocean carbon cycling in GENIE-1 by assimilating 3-D observational datasets of phosphate and alkalinity using an ensemble Kalman filter method. The calibrated (mean) model predicts

  15. Application of a New Structural Model & Exploration Technologies to Define a Blind Geothermal System: A Viable Alternative to Grid Drilling for Geothermal Exploration: McCoy, Churchill County, NV

    Broader source: Energy.gov [DOE]

    DOE Geothermal Technologies Peer Review 2010 - Presentation. Relevance of research: Improve exploration technologies for range-hosted geothermal systems:Employ new concept models and apply existing methods in new ways; Breaking geothermal exploration tasks into new steps, segmenting the problem differently; Testing new models for dilatent structures; Utilizing shallow thermal aquifer model to focus exploration; Refining electrical interpretation methods to map shallow conductive featuresIdentifying key faults as fluid conduits; and Employ soil gas surveys to detect volatile elements and gases common to geothermal systems.

  16. 2 Delivery of Learning Design: the Explor@ System's Case Delivery of Learning Design: the Explor@

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    : the Explor@ System's Case Primary author(s): Gilbert Paquette and Olga Marino, Other author(s): Ileana de la, for design- ing and developing learning systems as well as two software tools, MOT and ADISA, developed

  17. Property:ExplorationHistory | 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 Home5b9fcbce19 No revisionEnvReviewNonInvasiveExploration Jump to: navigation, searchEstimatedTimeMedian

  18. Lagrangian methods for ballistic impact simulations/

    E-Print Network [OSTI]

    Tupek, Michael Ronne

    2010-01-01T23:59:59.000Z

    This thesis explores various Lagrangian methods for simulating ballistic impact with the ultimate goal of finding a universal, robust and scalable computational framework to assist in the design of armor systems. An overview ...

  19. Petroleum potential of the Upper Ordovician Maquoketa Group in Illinois: A coordinated geological and geochemical study

    SciTech Connect (OSTI)

    Crockett, J.E.; Oltz, D.F. (Illinois State Geological Survey, Champaign (USA)); Kruge, M.A. (Southern Illinois Univ., Carbondale (USA))

    1990-05-01T23:59:59.000Z

    The Ordovician Maquoketa Group in Illinois, predominantly composed of shale, calcareous shale, and carbonates, has long been considered a potential source for Illinois basin hydrocarbons. Methods used to better define the petroleum potential of the Maquoketa in the Illinois basin were lithostratigraphic study, Rock-Eval (pyrolysis) analyses, comparison of molecular markers from whole-rock extracts and produced oil, and construction of burial history models. Organic-rich submature Maquoketa potential source rocks are present in western Illinois at shallow depths on the basin flank. Deeper in the basin in southern Illinois, Rock-Eval analyses indicate that the Maquoketa shale is within the oil window. Solvent extracts of the Maquoketa from western Illinois closely resemble the Devonian New Albany Shale, suggesting that past studies may have erroneously attributed Maquoketa-generated petroleum to a New Albany source or failed to identify mixed source oils. Subtle differences between Maquoketa and New Albany solvent extracts include differences in pristane/phytane ratios, proportions of steroids, and distribution of dimethyldibenzothiophene isomers. Maquoketa solvent extracts show little resemblance to Middle Ordovician oils from the Illinois or Michigan basins. Lithostratigraphic studies identified localized thick carbonate facies in the Maquoketa, suggesting depositional response to upper Ordovician paleostructures. Sandstone facies in the Maquoketa in southwestern Illinois offer a potential source/trap play, as well as serving as potential carrier beds for hydrocarbon migration. Maquoketa source and carrier beds may feed older Ordovician rocks in faulted areas along and south of the Cottage Grove fault system in southern Illinois.

  20. Detailed geochemical study of the Dan River-Danville Triassic Basin, North Carolina and Virginia. National Uranium Resource Evaluation Program

    SciTech Connect (OSTI)

    Thayer, P. A.; Cook, J. R.

    1982-08-01T23:59:59.000Z

    This abbreviated data report presents results of surface geochemical reconnaissance in the Dan River-Danville Triassic Basin of north-central North Carolina and south-central Virginia. Unweathered rock samples were collected at 380 sites within the basin at a nominal sampling density of one site per square mile. Field measurements and observations are reported for each site; analytical data and field measurements are presented in tables and maps. A detailed four-channel spectrometric survey was conducted, and the results are presented as a series of symbol plot maps for eU, eTh, and eU/eTh. Data from rock sample sites (on microfiche in pocket) include rock type and color and elemental analyses for U, Th, Hf, Al, Ce, Dy, Eu, Fe, La, Lu, Mn, Na, Sc, Sm, Ti, V, and Yb. Elemental uranium in 362 sedimentary rock samples from the Dan River-Danville Basin ranges from a low of 0.1 to a maximum of 13.3 parts per million (ppM). The log mean uranium concentration for these same samples is 0.37 ppM, and the log standard deviation is 0.24 ppM. Elemental uranium in 10 diabase dike samples from within the basin is in the range 0.1 to 0.7 ppM. The log mean uranium concentration for diabase samples is -.65 ppM, and the log standard deviation is 0.27. This report is issued in draft form, without detailed technical and copy editing. This was done to make the report available to the public before the end of the NURE program.

  1. Geochemical information for sites contaminated with low-level radioactive wastes: II. St. Louis Airport Storage Site

    SciTech Connect (OSTI)

    Seeley, F.G.; Kelmers, A.D.

    1985-01-01T23:59:59.000Z

    The St. Louis Airport Storage Site (SLASS) became radioactively contaminated as a result of wastes that were being stored from operations to recover uranium from pitchblende ores in the 1940s and 1950s. The US Department of Energy is considering various remedial action options for the SLASS under the Formerly Utilized Site Remedial Action Program (FUSRAP). This report describes the results of geochemical investigations, carried out to support the FUSRAP activities and to aid in quantifying various remedial action options. Soil and groundwater samples from the site were characterized, and sorption ratios for uranium and radium and apparent concentration limit values for uranium were measured in soil/groundwater systems by batch contact methodology. The uranium and radium concentrations in soil samples were significantly above background near the old contaminated surface horizon (now at the 0.3/sup -/ to 0.9/sup -/m depth); the maximum values were 1566 ..mu..g/g and 101 pCi/g, respectively. Below about the 6/sup -/m depth, the concentrations appeared to be typical of those naturally present in soils of this area (3.8 +- 1.2 ..mu..g/g and 3.1 +- 0.6 pCi/g). Uranium sorption ratios showed stratigraphic trends but were generally moderate to high (100 to 1000 L/kg). The sorption isotherm suggested an apparent uranium concentration limit of about 200 mg/L. This relatively high solubility can probably be correlated with the carbonate content of the soil/groundwater systems. The lower sorption ratio values obtained from the sorption isotherm may have resulted from changes in the experimental procedure or the groundwater used. The SLASS appears to exhibit generally favorable behavior for the retardation of uranium solubilized from waste in the site. Parametric tests were conducted to estimate the sensitivity of uranium sorption and solubility to the pH and carbonate content of the system.

  2. CORE-BASED INTEGRATED SEDIMENTOLOGIC, STRATIGRAPHIC, AND GEOCHEMICAL ANALYSIS OF THE OIL SHALE BEARING GREEN RIVER FORMATION, UINTA BASIN, UTAH

    SciTech Connect (OSTI)

    Lauren P. Birgenheier; Michael D. Vanden Berg,

    2011-04-11T23:59:59.000Z

    An integrated detailed sedimentologic, stratigraphic, and geochemical study of Utah's Green River Formation has found that Lake Uinta evolved in three phases (1) a freshwater rising lake phase below the Mahogany zone, (2) an anoxic deep lake phase above the base of the Mahogany zone and (3) a hypersaline lake phase within the middle and upper R-8. This long term lake evolution was driven by tectonic basin development and the balance of sediment and water fill with the neighboring basins, as postulated by models developed from the Greater Green River Basin by Carroll and Bohacs (1999). Early Eocene abrupt global-warming events may have had significant control on deposition through the amount of sediment production and deposition rates, such that lean zones below the Mahogany zone record hyperthermal events and rich zones record periods between hyperthermals. This type of climatic control on short-term and long-term lake evolution and deposition has been previously overlooked. This geologic history contains key points relevant to oil shale development and engineering design including: (1) Stratigraphic changes in oil shale quality and composition are systematic and can be related to spatial and temporal changes in the depositional environment and basin dynamics. (2) The inorganic mineral matrix of oil shale units changes significantly from clay mineral/dolomite dominated to calcite above the base of the Mahogany zone. This variation may result in significant differences in pyrolysis products and geomechanical properties relevant to development and should be incorporated into engineering experiments. (3) This study includes a region in the Uinta Basin that would be highly prospective for application of in-situ production techniques. Stratigraphic targets for in-situ recovery techniques should extend above and below the Mahogany zone and include the upper R-6 and lower R-8.

  3. Application of Radial Basis Functional Link Networks to Exploration for Proterozoic Mineral Deposits in Central Iran

    SciTech Connect (OSTI)

    Behnia, Pouran [Geological Survey of Iran, Geomatics Department (Iran, Islamic Republic of)], E-mail: pouranb@yahoo.com

    2007-06-15T23:59:59.000Z

    The metallogeny of Central Iran is characterized mainly by the presence of several iron, apatite, and uranium deposits of Proterozoic age. Radial Basis Function Link Networks (RBFLN) were used as a data-driven method for GIS-based predictive mapping of Proterozoic mineralization in this area. To generate the input data for RBFLN, the evidential maps comprising stratigraphic, structural, geophysical, and geochemical data were used. Fifty-eight deposits and 58 'nondeposits' were used to train the network. The operations for the application of neural networks employed in this study involve both multiclass and binary representation of evidential maps. Running RBFLN on different input data showed that an increase in the number of evidential maps and classes leads to a larger classification sum of squared error (SSE). As a whole, an increase in the number of iterations resulted in the improvement of training SSE. The results of applying RBFLN showed that a successful classification depends on the existence of spatially well distributed deposits and nondeposits throughout the study area.

  4. Using comprehensive two-dimensional gas chromatography to explore the geochemistry of the Santa Barbara oil seeps

    SciTech Connect (OSTI)

    Reddy, Christopher; Nelson, Robert

    2013-03-27T23:59:59.000Z

    The development of comprehensive two-dimensional gas chromatography (GC x GC) has expanded the analytical window for studying complex mixtures like oil. Compared to traditional gas chromatography, this technology separates and resolves at least an order of magnitude more compounds, has a much larger signal to noise ratio, and sorts compounds based on their chemical class; hence, providing highly refined inventories of petroleum hydrocarbons in geochemical samples that was previously unattainable. In addition to the increased resolution afforded by GC x GC, the resulting chromatograms have been used to estimate the liquid vapor pressures, aqueous solubilities, octanol-water partition coefficients, and vaporization enthalpies of petroleum hydrocarbons. With these relationships, powerful and incisive analyses of phase-transfer processes affecting petroleum hydrocarbon mixtures in the environment are available. For example, GC x GC retention data has been used to quantitatively deconvolve the effects of phase transfer processes such as water washing and evaporation. In short, the positive attributes of GC x GC-analysis have led to a methodology that has revolutionized the analysis of petroleum hydrocarbons. Overall, this research has opened numerous fields of study on the biogeochemical "?genetics" (referred to as petroleomics) of petroleum samples in both subsurface and surface environments. Furthermore, these new findings have already been applied to the behavior of oil at other seeps as well, for petroleum exploration and oil spill studies.

  5. Utah coalbed gas exploration poised for growth

    SciTech Connect (OSTI)

    Petzet, G.A.

    1996-08-05T23:59:59.000Z

    Coalbed methane production in eastern Utah is growing despite a relaxed pace of exploratory drilling. Leasing has been active the past 2 years, but a delay in issuance of a federal environmental impact statement could retard drilling. Only 19 new wells began producing coalbed gas during 1995, but gas production increased from existing wells as dewatering progressed. The US Bureau of Land Management will allow limited exploration but no field development on federal lands until the EIS is completed, possibly as early as this month. The paper discusses production of coalbed methane in Utah.

  6. Dictionary of petroleum exploration, drilling, and production

    SciTech Connect (OSTI)

    Hyne, N.J.

    1991-01-01T23:59:59.000Z

    This book contains more than 20,000 definitions of oil exploration, drilling, and production terms, making this dictionary mandatory for both the experienced industry professional and the nontechnical person. Completing this comprehensive reference are more than 500 detailed illustrations. Appendices include a rotary rig diagram, a cable tool drilling rig, a beam pumping unit, giant oil fields of the world, giant oil, and gas fields of the United States and Canada, a geological time chart, geological map symbols, conversion factors, the Greek alphabet atomic weights and numbers, charts of the geological features of the United States and Canada, plus much, much more.

  7. Template:ExplorationTechnique | 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 Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-gTaguspark Jump to: navigation,Telluric SurveyCite Jump

  8. Exploring the Nature of Matter | Jefferson Lab

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicy and Assistance100JeffersonMarkExploratory DevelopmentExploring

  9. Explore Geothermal Careers | Department of Energy

    Energy Savers [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 Office of Inspector General Office of Audit|Department of Energy56Executive SummitEnergyGeothermal Careers Explore

  10. Geothermal/Exploration | 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 Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to: navigation, searchTo encourage the developmentRiverExploration

  11. Visual analysis to support exploration of recorded UAV Christophe Hurter1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Visual analysis to support exploration of recorded UAV data Christophe Hurter1 , Christian Colongo2 and improvements of UAV features are an awkward and difficult challenge. This activity requires precise tools and evaluation methods to analyze the UAV parameters. Therefore large quantity of data must be monitored

  12. Concept Study: Exploration and Production in Environmentally Sensitive Arctic Areas

    SciTech Connect (OSTI)

    Shirish Patil; Rich Haut; Tom Williams; Yuri Shur; Mikhail Kanevskiy; Cathy Hanks; Michael Lilly

    2008-12-31T23:59:59.000Z

    The Alaska North Slope offers one of the best prospects for increasing U.S. domestic oil and gas production. However, this region faces some of the greatest environmental and logistical challenges to oil and gas production in the world. A number of studies have shown that weather patterns in this region are warming, and the number of days the tundra surface is adequately frozen for tundra travel each year has declined. Operators are not allowed to explore in undeveloped areas until the tundra is sufficiently frozen and adequate snow cover is present. Spring breakup then forces rapid evacuation of the area prior to snowmelt. Using the best available methods, exploration in remote arctic areas can take up to three years to identify a commercial discovery, and then years to build the infrastructure to develop and produce. This makes new exploration costly. It also increases the costs of maintaining field infrastructure, pipeline inspections, and environmental restoration efforts. New technologies are needed, or oil and gas resources may never be developed outside limited exploration stepouts from existing infrastructure. Industry has identified certain low-impact technologies suitable for operations, and has made improvements to reduce the footprint and impact on the environment. Additional improvements are needed for exploration and economic field development and end-of-field restoration. One operator-Anadarko Petroleum Corporation-built a prototype platform for drilling wells in the Arctic that is elevated, modular, and mobile. The system was tested while drilling one of the first hydrate exploration wells in Alaska during 2003-2004. This technology was identified as a potentially enabling technology by the ongoing Joint Industry Program (JIP) Environmentally Friendly Drilling (EFD) program. The EFD is headed by Texas A&M University and the Houston Advanced Research Center (HARC), and is co-funded by the National Energy Technology Laboratory (NETL). The EFD participants believe that the platform concept could have far-reaching applications in the Arctic as a drilling and production platform, as originally intended, and as a possible staging area. The overall objective of this project was to document various potential applications, locations, and conceptual designs for the inland platform serving oil and gas operations on the Alaska North Slope. The University of Alaska Fairbanks assisted the HARC/TerraPlatforms team with the characterization of potential resource areas, geotechnical conditions associated with continuous permafrost terrain, and the potential end-user evaluation process. The team discussed the various potential applications with industry, governmental agencies, and environmental organizations. The benefits and concerns associated with industry's use of the technology were identified. In this discussion process, meetings were held with five operating companies (22 people), including asset team leaders, drilling managers, HSE managers, and production and completion managers. Three other operating companies and two service companies were contacted by phone to discuss the project. A questionnaire was distributed and responses were provided, which will be included in the report. Meetings were also held with State of Alaska Department of Natural Resources officials and U.S. Bureau of Land Management regulators. The companies met with included ConcoPhillips, Chevron, Pioneer Natural Resources, Fairweather E&P, BP America, and the Alaska Oil and Gas Association.

  13. Design and prototyping methods for brushless motors and motor control

    E-Print Network [OSTI]

    Colton, Shane W. (Shane William)

    2010-01-01T23:59:59.000Z

    In this report, simple, low-cost design and prototyping methods for custom brushless permanent magnet synchronous motors are explored. Three case-study motors are used to develop, illustrate and validate the methods. Two ...

  14. Geochemical Rate/RNA Integration Study (GRIST): A Pilot Field Experiment for Inter-Calibration of Biogeochemistry and Nucleic Acid Measurements Final Report

    SciTech Connect (OSTI)

    Bronk, Deborah

    2007-01-08T23:59:59.000Z

    The Geochemical Rate/RNA Integration Study (GRIST) project sought to correlate biogeochemical flux rates with measurements of gene expression and mRNA abundance to demonstrate the application of molecular approaches to estimate the presence and magnitude of a suite of biogeochemical processes. The study was headed by Lee Kerkhoff of Rutgers University. In this component of the GRIST study, we characterized ambient nutrient concentrations and measured uptake rates for dissolved inorganic nitrogen (DIN, ammonium, nitrate and nitrite) and dissolved organic nitrogen (urea and dissolved free amino acids) during two diel studies at the Long-Term Ecosystem Observatory (LEO-15) on the New Jersey continental shelf.

  15. Geochemical Processes Data Package for the Vadose Zone in the Single-Shell Tank Waste Management Areas at the Hanford Site

    SciTech Connect (OSTI)

    Cantrell, Kirk J.; Zachara, John M.; Dresel, P. Evan; Krupka, Kenneth M.; Serne, R. Jeffrey

    2007-09-28T23:59:59.000Z

    This data package discusses the geochemistry of vadose zone sediments beneath the single-shell tank farms at the U.S. Department of Energy’s (DOE’s) Hanford Site. The purpose of the report is to provide a review of the most recent and relevant geochemical process information available for the vadose zone beneath the single-shell tank farms and the Integrated Disposal Facility. Two companion reports to this one were recently published which discuss the geology of the farms (Reidel and Chamness 2007) and groundwater flow and contamination beneath the farms (Horton 2007).

  16. Design Space Exploration of Parameterized Systems using Design of Experiments

    E-Print Network [OSTI]

    Sheldon, David

    2011-01-01T23:59:59.000Z

    13 2.1 Design space exploration for system specific tuningShin Figure 5: Noxim NoC design space with over 60,00030: Percent of the design space that needs to be explored in

  17. MAGNETOTELLURICS -APPLICATION TO RESOURCE EXPLORATION, STUDIES OF CRUST/LITHOSPHERE,

    E-Print Network [OSTI]

    Harinarayana, T.

    OF TECHNIQUES OF DATA ACQUISITION AND INTERPRETATION NATIONAL GEOPHYSICAL RESEARCH INSTITUTE (COUNCILMAGNETOTELLURICS - APPLICATION TO RESOURCE EXPLORATION, STUDIES OF CRUST/LITHOSPHERE, IMPROVEMENT: NGRI-2009-EXP- MAGNETOTELLURICS ­ APPLICATION TO RESOURCE EXPLORATION, STUDIES OF CRUST / LITHOSPHERE

  18. A trade space model for robotic lunar exploration

    E-Print Network [OSTI]

    Bailey, Zachary James

    2010-01-01T23:59:59.000Z

    The last decade has seen a resurgence of interest in the moon as a target for planetary exploration. In light of the growing interest in the robotic exploration of the moon, this thesis presents a quantitative methodology ...

  19. June 26 Webinar to Explore Renewable Energy Project Leasing on...

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

    June 26 Webinar to Explore Renewable Energy Project Leasing on Tribal Lands June 26 Webinar to Explore Renewable Energy Project Leasing on Tribal Lands June 19, 2013 - 7:28pm...

  20. Strategies for affordable human Moon and Mars exploration

    E-Print Network [OSTI]

    Wooster, Paul Douglas

    2007-01-01T23:59:59.000Z

    The U.S. Vision for Space Exploration calls for NASA to undertake human exploration of the Moon and Mars. This endeavor must be performed in an affordable manner in order to be successful. This thesis outlines a series of ...

  1. Energy Department and South Dakota Tribal Leaders Explore Ways...

    Energy Savers [EERE]

    and South Dakota Tribal Leaders Explore Ways to Lower Energy Costs Energy Department and South Dakota Tribal Leaders Explore Ways to Lower Energy Costs June 10, 2014 - 3:08pm...

  2. An Integrated Traverse Planner and Analysis Tool for Planetary Exploration

    E-Print Network [OSTI]

    Johnson, Aaron William

    Future planetary explorations will require surface traverses of unprecedented frequency, length, and duration. As a result, there is need for exploration support tools to maximize productivity, scientific return, and safety. ...

  3. Design of spacecraft for exploration of the Moon and Mars

    E-Print Network [OSTI]

    Epps, Brenden P

    2006-01-01T23:59:59.000Z

    In this thesis, I develop the conceptual design of the spacecraft required for human-Lunar and human-Mars exploration. The requirements for these vehicles are derived in the context of the NASA Concept Exploration & ...

  4. Thermo2Pro: Knowledge dissemination for deep geothermal exploration

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1/12 Thermo2Pro: Knowledge dissemination for deep geothermal exploration Philippe Calcagno1 territoires, Voreppe, France # now at Kitware, Villeurbanne, France p.calcagno@brgm.fr Keywords: Deep geothermal exploration, information system, Web tool, sedimentary basin, dissemination. Abstract

  5. Flow through shares for Natural Gas exploration (Quebec, Canada)

    Broader source: Energy.gov [DOE]

    A flow-through share is a security issued by an exploration company that waives its exploration deduction in favor of the investor. The Québec Taxation Act enables a private individual to benefit...

  6. ASU School of Earth and Space Exploration September 10, 2014

    E-Print Network [OSTI]

    Rhoads, James

    ASU School of Earth and Space Exploration September 10, 2014 Imaging the Birthplaces of Stars and Planets with Terahertz Focal Plane Arrays Christopher Groppi Assistant Professor ASU School of Earth and Space Exploration #12;ASU School of Earth and Space Exploration September 10, 2014 SESE Terahertz Group

  7. Frontier-Based Exploration Using Multiple Robots Brian Yamauchi

    E-Print Network [OSTI]

    Baltes, Jacky

    Frontier-Based Exploration Using Multiple Robots Brian Yamauchi Navy Center for Applied Research. ABSTRACT Frontier-based exploration directs mobile robots to regions on the boundary between unexplored spaceand spacethat is known to be open. Previously, we havedemonstrated that frontier-based exploration can

  8. Virtual Reviewers for Collaborative Exploration of Movie Reviews

    E-Print Network [OSTI]

    items well. Collaborative information exploration virtualizes this process by using rating data. We haveVirtual Reviewers for Collaborative Exploration of Movie Reviews Junichi Tatemura Institute tatemura@iis.u-tokyo.ac.jp ABSTRACT We propose a collaborative exploration system that helps users

  9. A Business Process Explorer: Recovering Business Processes from Business Applications

    E-Print Network [OSTI]

    Zou, Ying

    1 A Business Process Explorer: Recovering Business Processes from Business Applications Jin Guo and software developers. We present a business process explorer tool which automatically recovers business of business applications, we developed a business process explorer tool which recovers as-implemented business

  10. CLUSTERED MULTIDIMENSIONAL SCALING FOR EXPLORATION IN INFORMATION RETRIEVAL

    E-Print Network [OSTI]

    Genève, Université de

    and even hardly improve the exploration process of datasets assumed to be composed of multiple distinctCLUSTERED MULTIDIMENSIONAL SCALING FOR EXPLORATION IN INFORMATION RETRIEVAL Eniko Sz´ekely, ´Eric: clustering, nearest neighbour, multidimensional scaling, exploration. Abstract: The data that needs

  11. HIGHER-ORDER MODELING AND AUTOMATED DESIGN-SPACE EXPLORATION

    E-Print Network [OSTI]

    Esser, Robert

    the second requires the exis- tence of an automated process for design space exploration. There are many waysHIGHER-ORDER MODELING AND AUTOMATED DESIGN-SPACE EXPLORATION J¨orn W. Janneck EECS Department exploration, exploratory simula- tion, performance evaluation, higher-order models ABSTRACT An important part

  12. Optimal Grid Exploration by Asynchronous Oblivious Robots Stephane Devismes

    E-Print Network [OSTI]

    process implies that the robots somehow have to remember which part of the graph has been explored of the other robots remain the only way to distinguish different stages of the exploration process. The mainOptimal Grid Exploration by Asynchronous Oblivious Robots St´ephane Devismes Anissa Lamani Franck

  13. Asynchronous Exclusive Perpetual Grid Exploration without Sense of Direction

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    " to help robots in their exploration process. Observe that due to the mutual exclusion constraintsAsynchronous Exclusive Perpetual Grid Exploration without Sense of Direction Fran¸cois Bonnet1 the exclusive perpetual exploration of grid shaped networks using anonymous, oblivious and fully asynchronous

  14. ccsd00001253 The exploration process of inhomogeneous continuum

    E-Print Network [OSTI]

    ccsd­00001253 (version 1) : 8 Mar 2004 The exploration process of inhomogeneous continuum random) that arise as weak limits of birthday trees. We give a description of the exploration process, a function de words: Continuum random tree, exchangeable increments, exploration process, L#19;evy process, weak

  15. Increasing pipelined IP core utilization in Process Networks using Exploration

    E-Print Network [OSTI]

    Kienhuis, Bart

    Increasing pipelined IP core utilization in Process Networks using Exploration Claudiu Zissulescu pipelined. In this paper, we present an exploration methodology that uses feedback provided by the Laura tool to increase the uti- lization of IP cores embedded in our PN network. Using this exploration, we

  16. Using Provenance to Streamline Data Exploration through Visualization

    E-Print Network [OSTI]

    Utah, University of

    of the visualization process can be used to streamline the data exploration process and reduce the time to insight process. #12;Using Provenance to Streamline Data Exploration through Visualization Steven P. Callahan be used to streamline the data exploration process and reduce the time to in- sight. This model enables

  17. Image Based Exploration for Indoor Environments using Local Features

    E-Print Network [OSTI]

    Treuille, Adrien

    . INTRODUCTION Mobile robot exploration is a vital cog in the automa- tion of the mapping process. In recentImage Based Exploration for Indoor Environments using Local Features (Extended Abstract) Aravindhan K Krishnan Madhava Krishna Supreeth Achar ABSTRACT This paper presents an approach to explore

  18. Exploring Small-Scale Meat Processing Expansions in Iowa

    E-Print Network [OSTI]

    Debinski, Diane M.

    Exploring Small-Scale Meat Processing Expansions in Iowa A Technical Report Submitted@iastate.edu #12;2Exploring Small-Scale Meat Processing Expansions in Iowa April 2011 Overview of Findings Iowa;3Exploring Small-Scale Meat Processing Expansions in Iowa April 2011 Introduction Iowa is a national leader

  19. Hierarchical Distributed Task Allocation for Multi-Robot Exploration

    E-Print Network [OSTI]

    Butler, Zack

    the exploration process via a market-based mechanism. That is, each robot decides for itself whether it is moreHierarchical Distributed Task Allocation for Multi-Robot Exploration John Hawley and Zack Butler Abstract In order to more effectively explore a large unknown area, multiple robots may be employed to work

  20. Experimental Evaluation of Some Exploration Strategies for Mobile Robots

    E-Print Network [OSTI]

    Amigoni, Francesco

    mobile robots. An efficient map building process is based on a good exploration strategy that determines to incrementally map it. More precisely, the process of exploring an unknown environment using a mobile robot the paper. II. A REVIEW OF EXPLORATION STRATEGIES Mapping is an incremental process. Since the ranges

  1. Using Visualization Process Graphs to Improve Visualization Exploration

    E-Print Network [OSTI]

    Jankun-Kelly, T. J.

    Using Visualization Process Graphs to Improve Visualization Exploration T. J. Jankun-Kelly1 University, MS 39762, USA. Email: tjk@acm.org Abstract. Visualization exploration is an iterative process, redundant exploration was quickly identified and eliminated. 1 Introduction During the visualization process

  2. LAWST 7 Styles of Exploration (c) Cem Kaner All rights reserved 1 Styles of Exploration

    E-Print Network [OSTI]

    they fail · Knowledge of the use of applications of this type · Deep knowledge of the software under test experience with software development projects and their typical problems · Requirements analysis or problem Testing: Exploring the Controversy of Unstructured Testing. STAR'98 WEST So, how do you do it

  3. Exploring patterns in European singles charts

    E-Print Network [OSTI]

    Buda, Andrzej

    2015-01-01T23:59:59.000Z

    European singles charts are important part of the music industry responsible for creating popularity of songs. After modeling and exploring dynamics of global album sales in previous papers, we investigate patterns of hit singles popularity according to all data (1966-2015) from weekly charts (polls) in 12 Western European countries. The dynamics of building popularity in various national charts is more than the economy because it depends on spread of information. In our research we have shown how countries may be affected by their neighbourhood and influenced by technological era. We have also computed correlations with geographical and cultural distances between countries in analog, digital and Internet era. We have shown that time delay between the single premiere and the peak of popularity has become shorter under the influence of technology and the popularity of songs depends on geographical distances in analog (1966-1987) and Internet (2004-2015) era. On the other hand, cultural distances between nation...

  4. Exploring the magnetic topologies of cool stars

    E-Print Network [OSTI]

    Morin, J; Petit, P; Albert, L; Auriere, M; Cabanac, R; Catala, C; Delfosse, X; Dintrans, B; Fares, R; Forveille, T; Gastine, T; Jardine, M; Konstantinova-Antova, R; Lanoux, J; Lignieres, F; Morgenthaler, A; Paletou, F; Velez, J C Ramirez; Solanki, S K; Theado, S; Van Grootel, V

    2010-01-01T23:59:59.000Z

    Magnetic fields of cool stars can be directly investigated through the study of the Zeeman effect on photospheric spectral lines using several approaches. With spectroscopic measurement in unpolarised light, the total magnetic flux averaged over the stellar disc can be derived but very little information on the field geometry is available. Spectropolarimetry provides a complementary information on the large-scale component of the magnetic topology. With Zeeman-Doppler Imaging (ZDI), this information can be retrieved to produce a map of the vector magnetic field at the surface of the star, and in particular to assess the relative importance of the poloidal and toroidal components as well as the degree of axisymmetry of the field distribution. The development of high-performance spectropolarimeters associated with multi-lines techniques and ZDI allows us to explore magnetic topologies throughout the Hertzsprung-Russel diagram, on stars spanning a wide range of mass, age and rotation period. These observations b...

  5. Hard x-ray imaging from explorer

    SciTech Connect (OSTI)

    Grindlay, J.E.; Murray, S.S.

    1981-11-01T23:59:59.000Z

    Coded aperture X-ray detectors were applied to obtain large increases in sensitivity as well as angular resolution. A hard X-ray coded aperture detector concept is described which enables very high sensitivity studies persistent hard X-ray sources and gamma ray bursts. Coded aperture imaging is employed so that approx. 2 min source locations can be derived within a 3 deg field of view. Gamma bursts were located initially to within approx. 2 deg and X-ray/hard X-ray spectra and timing, as well as precise locations, derived for possible burst afterglow emission. It is suggested that hard X-ray imaging should be conducted from an Explorer mission where long exposure times are possible.

  6. Exploring the mechanisms of protein folding

    E-Print Network [OSTI]

    Xu, Ji; Ren, Ying; Li, Jinghai

    2013-01-01T23:59:59.000Z

    Neither of the two prevalent theories, namely thermodynamic stability and kinetic stability, provides a comprehensive understanding of protein folding. The thermodynamic theory is misleading because it assumes that free energy is the exclusive dominant mechanism of protein folding, and attributes the structural transition from one characteristic state to another to energy barriers. Conversely, the concept of kinetic stability overemphasizes dominant mechanisms that are related to kinetic factors. This article explores the stability condition of protein structures from the viewpoint of meso-science, paying attention to the compromise in the competition between minimum free energy and other dominant mechanisms. Based on our study of complex systems, we propose that protein folding is a meso-scale, dissipative, nonlinear and non-equilibrium process that is dominated by the compromise between free energy and other dominant mechanisms such as environmental factors. Consequently, a protein shows dynamic structures,...

  7. GEOCHEMICAL CHARACTERIZATION OF GÜRÜN

    E-Print Network [OSTI]

    Stratigraphic Mineralogic

    A Middle Miocene playa-lake sedimentary sequence containing oil shales and trona is divided into the Gökp?nar (the lower oil shale unit) and the Terzio?lu (the upper oil shale unit) Members in the Gürün Basin in eastern Turkey. Thermal decomposition of Gürün oil shales was studied by thermo

  8. Geochemical engineering reference manual

    SciTech Connect (OSTI)

    Owen, L.B.; Michels, D.E.

    1984-01-01T23:59:59.000Z

    The following topics are included in this manual: physical and chemical properties of geothermal brine and steam, scale and solids control, processing spent brine for reinjection, control of noncondensable gas emissions, and goethermal mineral recovery. (MHR)

  9. VolumeExplorer: Roaming Large Volumes to Couple Visualization and Data Processing for Oil and Gas Exploration

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    VolumeExplorer: Roaming Large Volumes to Couple Visualization and Data Processing for Oil and Gas dedicated to oil and gas exploration. Our system combines probe- based volume rendering with data processing Seismic interpretation is an important task in the oil and gas exploration-production (EP) workflow [9, 26

  10. Higher order harmonic detection for exploring nonlinear interactions

    SciTech Connect (OSTI)

    Vasudevan, Rama K [ORNL; Okatan, M. B. [University of New South Wales; Rajapaksa, Indrajit [Oak Ridge National Laboratory (ORNL); Kim, Yunseok [ORNL; Marincel, Dan [Materials Science and Engineering, Pennsylvania State University; Trolier-McKinstry, Susan [Pennsylvania State University; Jesse, Stephen [ORNL; Nagarajan, Valanoor [University of New South Wales; Kalinin, Sergei V [ORNL

    2013-01-01T23:59:59.000Z

    Nonlinear dynamics underpin a vast array of physical phenomena ranging from interfacial motion to jamming transitions. In many cases, decoupling the contributions of competing or co-existing mechanisms to the system response can be achieved through investigation of higher order harmonics. Here, a method using band excitation scanning probe microscopy to investigate higher order harmonics of the electromechanical response, with nanometer scale spatial resolution is presented. The utility of the technique is demonstrated by probing the first three harmonics of strain for a well-known system, a model Pb(Zr1-xTix)O3 ferroelectric capacitor. It is shown that the second order harmonic response is correlated with the first harmonic response, whereas the third harmonic is not. Additionally, nanoscale measurements of the second harmonic response with field reveal significant deviations from Rayleigh-type models in the form of a much more complicated field dependence than is observed in the spatially averaged data. These results illustrate the versatility of combining proximal probe techniques with nth harmonic detection methods in exploring and decoupling nonlinear dynamics in a wide variety of nanoscale materials.

  11. Correlation methods

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1981-01-01T23:59:59.000Z

    Correlation methods have been developed to provide a quick and relatively simple technique for estimating the performance of passive solar systems. The correlations are done with respect to data generated from simulation models. The techniques and accuracies are described. Both the Solar Load Ratio and Un-Utilizability methods are described. The advantages and limitations of correlation methods as design tools are discussed.

  12. Groundwater prospecting for sandstone-type uranium deposits: the merits of mineral-solution equilibria versus single element tracer methods. Volume II

    SciTech Connect (OSTI)

    Wanty, R.B.; Langmuir, D.; Chatham, J.R.

    1981-08-01T23:59:59.000Z

    This report presents the results of further research on the groundwater geochemistry of 96 well waters in two uraniferous aquifers in Texas and Wyoming, and is a continuation of the work presented by Chatham et al. (1981). In this study variations in concentrations of U, As, Mo, Se and V were compared with the saturation state of the groundwater with respect to mineral phases of these elements known or expected to occur in each area. The non-radiogenic trace elements exhibited strong redox dependence consistent with thermodynamic predictions, but their variations did not pinpoint existing uranium ore bodies, because of a shift in groundwater flow patterns since the time of ore emplacement. Saturation levels of trace element minerals such as realgar, native Se, and molybdenite showed broad anomalies around the ore-bearing areas, similar to patterns found for U minerals by Langmuir and Chatham (1980), and Chatham et al. (1981). The radiogenic elements Ra and Rn showed significant anomalies directly within the ore zones. Helium anomalies were displaced in the direction of groundwater flow, but by their magnitude and areal extent provided strong evidence for the existence of nearby uranium accumulations. Uranium isotope ratios showed no systematic variations within the two aquifers studied. Saturation maps for kaolinite, illite, montmorillonite and the zeolites analcime and clinoptilolite provided 1 to 2 km anomalies around the ore at the Texas site. Saturation values for the gangue minerals pyrite and calcite defined the redox interface and often suggested the position of probable uranium mineralization. When properly used, the groundwater geochemical concepts for exploration can accurately pinpoint uranium mineralization at a fraction of the cost of conventional methods that involve test drilling and geophysical and core logging.

  13. New River Geothermal Exploration (Ram Power Inc.)

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

    Miller, Clay

    The New River Geothermal Exploration (DOE Award No. EE0002843) is located approximately 25km south of the Salton Sea, near town of Brawley in Imperial County and approximately 150km east of San Diego, California. A total of 182 MT Logger sites were completed covering the two separate Mesquite and New River grids. The data was collected over a frequency range of 320Hz to 0.001Hz with variable site spacing. A number of different inversion algorithms in 1D, 2D and 3D were used to produce resistivity-depth profiles and maps of subsurface resistivity variations over the survey area. For 2D inversions, a total of eighteen lines were constructed in east-west and north-south orientations crossing the entire survey area. For MT 3D inversion, the New River property was divided in two sub-grids, Mesquite and New River areas. The report comprises of two parts. For the first part, inversions and geophysical interpretation results are presented with some recommendations of the potential targets for future follow up on the property. The second part of the report describes logistics of the survey, survey parameters, methodology and the survey results (data) in digital documents. The report reviews a Spartan MT survey carried out by Quantec Geoscience Limited over the New River Project in California, USA on behalf of Ram Power Inc. Data was acquired over a period of 29 days from 2010/06/26 to 2010/07/24.

  14. Alum Innovative Exploration Project (Ram Power Inc.)

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

    Miller, Clay

    Data generated from the Alum Innovative Exploration Project, one of several promising geothermal properties located in the middle to upper Miocene (~11-5 Ma, or million years BP) Silver Peak-Lone Mountain metamorphic core complex (SPCC) of the Walker Lane structural belt in Esmeralda County, west-central Nevada. The geothermal system at Alum is wholly concealed; its upper reaches discovered in the late 1970s during a regional thermal-gradient drilling campaign. The prospect boasts several shallow thermal-gradient (TG) boreholes with TG >75oC/km (and as high as 440oC/km) over 200-m intervals in the depth range 0-600 m. Possibly boiling water encountered at 239 m depth in one of these boreholes returned chemical- geothermometry values in the range 150-230oC. GeothermEx (2008) has estimated the electrical- generation capacity of the current Alum leasehold at 33 megawatts for 20 years; and the corresponding value for the broader thermal anomaly extending beyond the property at 73 megawatts for the same duration.

  15. New River Geothermal Exploration (Ram Power Inc.)

    SciTech Connect (OSTI)

    Miller, Clay

    2013-11-15T23:59:59.000Z

    The New River Geothermal Exploration (DOE Award No. EE0002843) is located approximately 25km south of the Salton Sea, near town of Brawley in Imperial County and approximately 150km east of San Diego, California. A total of 182 MT Logger sites were completed covering the two separate Mesquite and New River grids. The data was collected over a frequency range of 320Hz to 0.001Hz with variable site spacing. A number of different inversion algorithms in 1D, 2D and 3D were used to produce resistivity-depth profiles and maps of subsurface resistivity variations over the survey area. For 2D inversions, a total of eighteen lines were constructed in east-west and north-south orientations crossing the entire survey area. For MT 3D inversion, the New River property was divided in two sub-grids, Mesquite and New River areas. The report comprises of two parts. For the first part, inversions and geophysical interpretation results are presented with some recommendations of the potential targets for future follow up on the property. The second part of the report describes logistics of the survey, survey parameters, methodology and the survey results (data) in digital documents. The report reviews a Spartan MT survey carried out by Quantec Geoscience Limited over the New River Project in California, USA on behalf of Ram Power Inc. Data was acquired over a period of 29 days from 2010/06/26 to 2010/07/24.

  16. Evaluation of integrated data sets: four examples. [Uranium deposits (exploration)

    SciTech Connect (OSTI)

    Bolivar, S.L.; Freeman, S.B.; Weaver, T.A.

    1982-01-01T23:59:59.000Z

    Several large data sets have been integrated and utilized for rapid evaluation on a reconnaissance scale for the Montrose 1/sup 0/ x 2/sup 0/ quadrangle, Colorado. The data sets include Landsat imagery, hydrogeochemical and stream sediment analyses, airborne geophysical data, known mineral occurrences, and a geologic map. All data sets were registered to a 179 x 119 rectangular grid and projected onto Universal Transverse Mercator coordinates. A grid resolution of 1 km was used. All possible combinations of three, for most data sets, were examined for general geologic correlations by utilizing a color microfilm output. In addition, gray-level pictures of statistical output, e.g., factor analysis, have been employed to aid evaluations. Examples for the data sets dysprosium-calcium, lead-copper-zinc, and equivalent uranium-uranium in water-uranium in sediment are described with respect to geologic applications, base-metal regimes, and geochemical associations.

  17. Immersed Boundary Methods in the Lattice Boltzmann Equation for Flow Simulation

    E-Print Network [OSTI]

    Kang, Shin Kyu

    2012-02-14T23:59:59.000Z

    In this dissertation, we explore direct-forcing immersed boundary methods (IBM) under the framework of the lattice Boltzmann method (LBM), which is called the direct-forcing immersed boundary-lattice Boltzmann method (IB-LBM). First, we derive...

  18. Solar discrepancies : Mars exploration and the curious problem of inter-planetary time

    E-Print Network [OSTI]

    Mirmalek, Zara Lenora

    2008-01-01T23:59:59.000Z

    Monterey, California. Solar Discrepancies: Mars explorationCALIFORNIA, SAN DIEGO Solar discrepancies: Mars explorationOF THE DISSERTATION Solar discrepancies: Mars exploration

  19. Lithium In Tufas Of The Great Basin- Exploration Implications...

    Open Energy Info (EERE)

    Tufas Of The Great Basin- Exploration Implications For Geothermal Energy And Lithium Resources Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper:...

  20. Neutron Imaging Explored as Complementary Technique for Improving...

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

    Neutron Imaging Explored as Complementary Technique for Improving Cancer Detection August 05, 2013 Researcher Maria Cekanova analyzes the neutron radiographs of a canine breast...

  1. Quaternary Borate Deposits As A Geothermal Exploration Tool In...

    Open Energy Info (EERE)

    Borate Deposits As A Geothermal Exploration Tool In The Great Basin Abstract A close spatial relationship exists between Quaternary borate deposits and moderate to high...

  2. Application of a New Structural Model and Exploration Technologies...

    Open Energy Info (EERE)

    Technologies to Define a Blind Geothermal System: A Viable Alternative to Grid-Drilling for Geothermal Exploration: McCoy, Churchill County, NV Geothermal Project Jump to:...

  3. United States Department Of The Navy Geothermal Exploration Leading...

    Open Energy Info (EERE)

    Navy Geothermal Exploration Leading To Shallow And Intermediate-Deep Drilling At Hawthorne Ammunition Depot, Hawthorne, Nv Jump to: navigation, search OpenEI Reference LibraryAdd...

  4. Historical Exploration And Drilling Data From Geothermal Prospects...

    Open Energy Info (EERE)

    Historical Exploration And Drilling Data From Geothermal Prospects And Power Generation Projects In The Western United States Jump to: navigation, search OpenEI Reference...

  5. Fall Lectures Feature Life of Einstein; Exploring Our World With...

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

    Fall Lectures Feature Life of Einstein; Exploring Our World With Particle Accelerators NEWPORT NEWS, Va., Sept. 22, 2010 - Jefferson Lab's first 2010 Fall Science Series lecture,...

  6. Jefferson Lab Fall Lecture: Exploring Our World With Particle...

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

    Fall Lecture: Exploring Our World With Particle Accelerators NEWPORT NEWS, Va., Nov. 9, 2010 - Jefferson Lab's 2010 Fall Science Lecture Series concludes on Tuesday, Nov. 23, with...

  7. Blind Geothermal System Exploration in Active Volcanic Environments...

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

    lack of surface thermal manifestation * Assessing unconventional targets requires re-tooling the standard geothermal exploration kit and adding in new tools Gravity Aeromagnetics...

  8. Integrated Geophysical Exploration of a Known Geothermal Resource...

    Open Energy Info (EERE)

    Neal Hot Springs Jump to: navigation, search OpenEI Reference LibraryAdd to library Book Section: Integrated Geophysical Exploration of a Known Geothermal Resource: Neal Hot...

  9. A Regional Strategy For Geothermal Exploration With Emphasis...

    Open Energy Info (EERE)

    Strategy For Geothermal Exploration With Emphasis On Gravity And Magnetotellurics Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: A Regional...

  10. architecture exploring tumor: Topics by E-print Network

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

    2007-01-01 23 Generative exploration of architectural envelope responding to solar passive qualities Physics Websites Summary: evolutionary design, integrated to early stage...

  11. Assessment of New Approaches in Geothermal Exploration Decision...

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

    Assessment of New Approaches in Geothermal Exploration Decision Making Preprint Sertac Akar and Katherine R. Young National Renewable Energy Laboratory Presented at the Fourtieth...

  12. U-262: Microsoft Internet Explorer Flaw Lets Remote Users Execute...

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

    reported in Microsoft Internet Explorer. reference LINKS: Bugtraq ID: 55562 Security Database KB2757760 Microsoft Security Advisory (2757760) SecurityTracker Alert ID: 1027538...

  13. Exploration Best Practices and the OpenEI Knowledge Exchange...

    Energy Savers [EERE]

    Exchange Webinar Exploration Best Practices and the OpenEI Knowledge Exchange Webinar slide presentation by Katherine Young, Timothy Reber and Kermit Witherbee on April 11, 2012....

  14. Geothermal Exploration In Pilgrim, Alaska- First Results From...

    Open Energy Info (EERE)

    Pilgrim, Alaska- First Results From Remote Sensing Studies Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Poster: Geothermal Exploration In Pilgrim, Alaska- First...

  15. NMSLO Application for Permit to Conduct Geophysical Exploration...

    Open Energy Info (EERE)

    Reference LibraryAdd to library Legal Document- OtherOther: NMSLO Application for Permit to Conduct Geophysical Exploration on Unleased State LandsLegal Published NA Year...

  16. Reconnaissance geothermal exploration at Raft River, Idaho from...

    Open Energy Info (EERE)

    exploration at Raft River, Idaho from thermal infrared scanning Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Reconnaissance geothermal...

  17. A Structural Model Guide For Geothermal Exploration In Ancestral...

    Open Energy Info (EERE)

    navigation, search OpenEI Reference LibraryAdd to library Journal Article: A Structural Model Guide For Geothermal Exploration In Ancestral Mount Bao, Leyte, Philippines Abstract...

  18. Energy Department Explores Deep Direct Use | Department of Energy

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

    Department Explores Deep Direct Use Cascaded uses of geothermal energy include district heating and industrial uses as well as agricultural applications like greenhouses and...

  19. Low Cost Exploration, Testing, and Development of the Chena Geothermal...

    Open Energy Info (EERE)

    Article: Low Cost Exploration, Testing, and Development of the Chena Geothermal Resource Abstract The Chena Hot Springs geothermal field was intensivelyexplored, tested, and...

  20. NREL: News - NREL Assembles Industry Group to Explore Solar Lending...

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

    914 NREL Assembles Industry Group to Explore Solar Lending Potential May 7, 2014 Increasingly, banks, credit unions, and other lenders are beginning to offer loan products to...

  1. / http://www.sciencemag.org/content/early/recent / 17 April 2014 / Page 1/ 10.1126/science.1249047 A diverse set of geochemical records has been developed from ice re-

    E-Print Network [OSTI]

    Napp, Nils

    silty ice. This isotope is contin- uously produced by cosmic rays in the atmosphere, is delivered.1249047 A diverse set of geochemical records has been developed from ice re- covered in the 3054-m Greenland Ice Sheet Project 2 (GISP2) core. These data provide a detailed history of climate and ice

  2. Pre-test geological and geochemical evaluation of the Caprock, St. Peter Sandstone and formation fluids, Yakley Field, Pike County, Illinois

    SciTech Connect (OSTI)

    Not Available

    1983-03-01T23:59:59.000Z

    The goal of these studies is to ensure long-term stable containment of air in the underground reservoirs used in conjunction with compressed air energy storage (CAES) plants. The specific objective is to develop stability criteria and engineering guidelines for designing CAES reservoirs in each of the three major reservoir types, including aquifers, salt cavities, and mined hard rock caverns. This document characterizes the geologic nature of porous media constituents native to the aquifer field test site near Pittsfield, Illinois. The geologic samples were subjected to geochemical evaluations to determine anticipated responses to cyclic air injection, heating and moisture - conditions typical of an operating CAES reservoir. This report documents the procedures used and results obtained from these analyses.

  3. Evapotranspiration And Geochemical Controls On Groundwater Plumes At Arid Sites: Toward Innovative Alternate End-States For Uranium Processing And Tailings Facilities

    SciTech Connect (OSTI)

    Looney, Brian B.; Denham, Miles E.; Eddy-Dilek, Carol A.; Millings, Margaret R.; Kautsky, Mark

    2014-01-08T23:59:59.000Z

    Management of legacy tailings/waste and groundwater contamination are ongoing at the former uranium milling site in Tuba City AZ. The tailings have been consolidated and effectively isolated using an engineered cover system. For the existing groundwater plume, a system of recovery wells extracts contaminated groundwater for treatment using an advanced distillation process. The ten years of pump and treat (P&T) operations have had minimal impact on the contaminant plume – primarily due to geochemical and hydrological limits. A flow net analysis demonstrates that groundwater contamination beneath the former processing site flows in the uppermost portion of the aquifer and exits the groundwater as the plume transits into and beneath a lower terrace in the landscape. The evaluation indicates that contaminated water will not reach Moenkopi Wash, a locally important stream. Instead, shallow groundwater in arid settings such as Tuba City is transferred into the vadose zone and atmosphere via evaporation, transpiration and diffuse seepage. The dissolved constituents are projected to precipitate and accumulate as minerals such as calcite and gypsum in the deep vadose zone (near the capillary fringe), around the roots of phreatophyte plants, and near seeps. The natural hydrologic and geochemical controls common in arid environments such as Tuba City work together to limit the size of the groundwater plume, to naturally attenuate and detoxify groundwater contaminants, and to reduce risks to humans, livestock and the environment. The technical evaluation supports an alternative beneficial reuse (“brownfield”) scenario for Tuba City. This alternative approach would have low risks, similar to the current P&T scenario, but would eliminate the energy and expense associated with the active treatment and convert the former uranium processing site into a resource for future employment of local citizens and ongoing benefit to the Native American Nations.

  4. Center for BrainHealtH Scientific exploration at

    E-Print Network [OSTI]

    O'Toole, Alice J.

    Center for BrainHealtH #12;#12;Scientific exploration at BrainHealth is leading edge, innovative and transformative. leading tHe way in tHiS century'S greateSt ScientiFic cauSe The Center for Brain significant cause of the century: To understand, protect and heal the brain. Scientific exploration at Brain

  5. EUROGRAPHICS 2007 Cultural Heritage Papers An Interactive Exploration of the

    E-Print Network [OSTI]

    Blanz, Volker

    reconstruction and access supplemental historical background material on demand. With the multimedia installation we present a new experience which empowers visitors of the museum to explore an historical site exploration techniques, however, come at the price of complex interac- tion paradigms and costly equipment

  6. Roadmap for Venus Exploration (Version 4, 1/29/14)

    E-Print Network [OSTI]

    Rathbun, Julie A.

    1 Roadmap for Venus Exploration (Version 4, 1/29/14) Introduction Venus is so similar solar systems. This Roadmap lays out a framework for the future exploration of Venus, encompassing expressed in this Roadmap should be recognized by NASA review panels as being consistent with VEXAG

  7. Original article Exploration of a plant architecture database

    E-Print Network [OSTI]

    Boyer, Edmond

    Original article Exploration of a plant architecture database with the AMAPmod software illustrated plantes, Cirad, BP5035, 34032 Montpellier cedex 1, France bLaboratoire d'arboriculture fruitière, Inra, 2) Abstract - This paper describes the constitution and the statistical exploration of a plant architecture

  8. Static electricity measurements for lightning warnings -an exploration

    E-Print Network [OSTI]

    Haak, Hein

    Static electricity measurements for lightning warnings - an exploration H. Bloemink De Bilt, 2013 | Internal report; IR 2013-01 #12;#12;Static electricity measurements for lightning warnings - an exploration Version 1.0 Date January 2013 Status Final #12;#12;Static electricity measurements for lightning warnings

  9. EMBEDDED SW DESIGN SPACE EXPLORATION AND AUTOMATION USING

    E-Print Network [OSTI]

    Wagner, Flávio Rech

    EMBEDDED SW DESIGN SPACE EXPLORATION AND AUTOMATION USING UML-BASED TOOLS FLÁVIO R. WAGNER, carro}@inf.ufrgs.br Abstract: This tutorial discusses design space exploration and software automation based on an UML front-end. First, we review software automation tools targeted at the embedded systems

  10. EXPLORING ABORIGINAL FORESTRY AND ECOSYSTEM-BASED MANAGEMENT

    E-Print Network [OSTI]

    EXPLORING ABORIGINAL FORESTRY AND ECOSYSTEM-BASED MANAGEMENT: A CASE STUDY OF COWICHAN TRIBES of Resource Management Title of Research Project: Exploring Aboriginal Forestry and Ecosystem-based Management aboriginal forestry will be required. First Nations share a common desire for control over their forest

  11. Robot Exploration with Fast Frontier Detection: Theory and Experiments

    E-Print Network [OSTI]

    Kaminka, Gal A.

    Robot Exploration with Fast Frontier Detection: Theory and Experiments Matan Keidar MAVERICK Group, Department of Computer Science, Bar-Ilan University galk@cs.biu.ac.il ABSTRACT Frontier-based exploration is the most common approach to explo- ration, a fundamental problem in robotics. In frontier-based ex

  12. Edinburgh Research Explorer Processivity and Coupling in Messenger RNA Transcription

    E-Print Network [OSTI]

    Millar, Andrew J.

    Edinburgh Research Explorer Processivity and Coupling in Messenger RNA Transcription Citation and processing that is not captured in the model. Methodology: In this paper, we explore the impact on the m, 'Processivity and Coupling in Messenger RNA Transcription' PLoS One, vol 5, no. 1, e8845, pp. 1-12., 10

  13. Active Exploration for Robot Parameter Selection in Episodic Reinforcement Learning

    E-Print Network [OSTI]

    Active Exploration for Robot Parameter Selection in Episodic Reinforcement Learning Oliver Kroemer-dimensional. Given the inherent exploration-exploitation dilemma of the problem, we propose treating in continuous multi- dimensional spaces. The approach is based on Gaussian process regression, which can

  14. Walk-in Intake Form First Year Advising & Exploration

    E-Print Network [OSTI]

    Wu, Shin-Tson

    Walk-in Intake Form First Year Advising & Exploration Student Development and Enrollment Services (Rev. 12/04/2012) Name: Current Major(s): PID: Current Minor(s): First Year Advising and Exploration process Course Withdrawal Other: 4. List any classes of concern and the reason(s) of your concern below: 5

  15. A Tool for Materials Exploration Dieter W. Heermann

    E-Print Network [OSTI]

    Heermann, Dieter W.

    into · preprocessing · simulation (production runs) · postprocessing Pre-processing prepA Tool for Materials Exploration Dieter W. Heermann Andreas Linke Christian Münkel Institut für) as well as visualisation techniques to explore materials. In this paper we describe the basic design

  16. A Web-based Method for Exploring Early Child Development Trends in British Columbia, Canada 

    E-Print Network [OSTI]

    Trafford, Katherine L E

    2007-11-27T23:59:59.000Z

    British Columbian policy-makers, researchers and community organizations make use of maps describing trends in Early Child Development (ECD) to make program decisions and funding allocation based upon the geography of need. ...

  17. PROJECT SUMMARIES EXPLORATION OF METHODS TO ENHANCE LFT&E AND TOTAL

    E-Print Network [OSTI]

    will conduct an operational assessment of LPD-17 during the detail design stage, and innovative attempt to more

  18. Exploring the viability of probabilistic underspecification as a viable streamlining method for LCA

    E-Print Network [OSTI]

    Patanavanich, Siamrut

    2011-01-01T23:59:59.000Z

    Life cycle assessment (LCA) has gained much interest in the field of product development and decision making. The resource intensiveness of conducting an LCA has slowed more widespread adoption of the methodology. Although ...

  19. Value network modeling : a quantitative method for comparing benefit across exploration architectures

    E-Print Network [OSTI]

    Cameron, Bruce G. (Bruce Gregory)

    2007-01-01T23:59:59.000Z

    In the design of complex systems serving a broad group of stakeholders, it can be difficult to prioritize objectives for the architecture. I postulate that it is possible to make architectural decisions based on consideration ...

  20. New Methods In Exploration At The Socorro Peak Kgra- A Gred Iii Project |

    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 Home5b9fcbce19 No revision hasInformation Earth's HeatMexico: EnergyMithunCenter Jump to:2Harvest JumpJump to:LoadingLondon

  1. A Five-Component Magneto-Telluric Method In Geothermal Exploration- The

    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 Office of InspectorConcentrating SolarElectric Coop,SaveWhiskey Flatshydro Homepowering9centuryGeneralNHawaii |

  2. An Evaluation Of Exploration Methods For Low-Temperature Geothermal Systems

    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 Home5b9fcbce19 NoPublic Utilities Address: 160 East 300Algoil JumpAltergy SystemsAmericanAmphenolInformation EmbarrassmentIn The

  3. An Integrated Study Method For Exploration Of Gas Hydrate Reservoirs In

    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 Home5b9fcbce19 NoPublic Utilities Address: 160 East 300Algoil JumpAltergyExperiments | Open Energy Information GeothermalMarine

  4. New methodical developments for GRANIT

    SciTech Connect (OSTI)

    Baessler, Stefan [ORNL; Nesvizhevsky, V. [ Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France; Toperverg, B [Ruhr University, Bochum, Germany; Zhernenkov, K. [Ruhr University, Bochum, Germany; Gagarski, A [Petersburg Nuclear Physics Institute, Gatchina, Russia; Lychagin, E [Joint Institute for Nuclear Research, Dubna, Russia; Muzychka, A [Joint Institute for Nuclear Research, Dubna, Russia; Strelkov, A [Joint Institute for Nuclear Research, Dubna, Russia; Mietke, A [Technische Universitat Dresden

    2011-01-01T23:59:59.000Z

    New methodical developments for the GRANIT spectrometer address further improvements of the critical parameters of this experimental installation, as well as its applications to new fields of research. Keeping in mind an extremely small fraction of ultra cold neutrons (UCN) that could be bound in gravitational quantum states, we look for methods to increase statistics due to: developing UCN sources with maximum phase-space density, counting simultaneously a large fraction of neutrons using position-sensitive detectors, and decreasing detector backgrounds. Also we explore an eventual application of the GRANIT spectrometer beyond the scope of its initial goals, for instance, for reflectometry with UCN.

  5. Exploring the randomness of Directed Acyclic Networks

    E-Print Network [OSTI]

    Joaquín Goñi; Bernat Corominas-Murtra; Ricard V. Solé; Carlos Rodríguez-Caso

    2010-06-11T23:59:59.000Z

    The feed-forward relationship naturally observed in time-dependent processes and in a diverse number of real systems -such as some food-webs and electronic and neural wiring- can be described in terms of so-called directed acyclic graphs (DAGs). An important ingredient of the analysis of such networks is a proper comparison of their observed architecture against an ensemble of randomized graphs, thereby quantifying the {\\em randomness} of the real systems with respect to suitable null models. This approximation is particularly relevant when the finite size and/or large connectivity of real systems make inadequate a comparison with the predictions obtained from the so-called {\\em configuration model}. In this paper we analyze four methods of DAG randomization as defined by the desired combination of topological invariants (directed and undirected degree sequence and component distributions) aimed to be preserved. A highly ordered DAG, called \\textit{snake}-graph and a Erd\\:os-R\\'enyi DAG were used to validate the performance of the algorithms. Finally, three real case studies, namely, the \\textit{C. elegans} cell lineage network, a PhD student-advisor network and the Milgram's citation network were analyzed using each randomization method. Results show how the interpretation of degree-degree relations in DAGs respect to their randomized ensembles depend on the topological invariants imposed. In general, real DAGs provide disordered values, lower than the expected by chance when the directedness of the links is not preserved in the randomization process. Conversely, if the direction of the links is conserved throughout the randomization process, disorder indicators are close to the obtained from the null-model ensemble, although some deviations are observed.

  6. RISK REDUCTION WITH A FUZZY EXPERT EXPLORATION TOOL

    SciTech Connect (OSTI)

    William W. Weiss

    2000-06-30T23:59:59.000Z

    Incomplete or sparse information on geologic or formation characteristics introduces a high level of risk for oil exploration and development projects. Expert systems have been developed and used in several disciplines and industries, including medical diagnostics, with favorable results. A state-of-the-art exploration ''expert'' tool, relying on a computerized data base and computer maps generated by neural networks, is proposed through the use of ''fuzzy'' logic, a relatively new mathematical treatment of imprecise or non-explicit parameters and values. This project will develop an Artificial Intelligence system that will draw upon a wide variety of information to provide realistic estimates of risk. ''Fuzzy logic,'' a system of integrating large amounts of inexact, incomplete information with modern computational methods to derive usable conclusions, has been demonstrated as a cost-effective computational technology in many industrial applications. During project year 1, 90% of geologic, geophysical, production and price data were assimilated for installation into the database. Logs provided geologic data consisting of formation tops of the Brushy Canyon, Lower Brushy Canyon, and Bone Springs zones of 700 wells used to construct regional cross sections. Regional structure and isopach maps were constructed using kriging to interpolate between the measured points. One of the structure derivative maps (azimuth of curvature) visually correlates with Brushy Canyon fields on the maximum change contours. Derivatives of the regional geophysical data also visually correlate with the location of the fields. The azimuth of maximum dip approximately locates fields on the maximum change contours. In a similar manner the second derivative in the x-direction of the gravity map visually correlates with the alignment of the known fields. The visual correlations strongly suggest that neural network architectures will be found to correlate regional attributes with individual well production. On a local scale, given open-hole log information, a neural network was trained to predict the product of porosity and oil saturation as reported in whole core analysis. Thus a direct indicator of an oil show is available from log information. This is important in the thin-bedded Delaware sand reservoirs. Fuzzy ranking was used to prioritize 3D seismic attributes that were then correlated to formation depth with a neural network. The results were superior to those obtained using linear interpolation or low order polynomial interpolation as time-to-depth conversion tools. A radial basis function neural network was developed and used as a log evaluation tool. This new technology gives an additional tool to the more commonly used multilayer perceptron (MLP) neural network. An interactive web based MLP, PredictOnline, was coded in Java and made available to consortium members for beta testing. PredictOnline demonstrates the power of Java programming language for web-based applications. A draft design of the Fuzzy Expert Exploration (FEE) Tool system based on readily available software was completed. The recent development of a Java Expert System Shell, JESS, facilitates expert rule development.

  7. Exploration for stratigraphic traps in a mature hydrodynamic setting, Williston Basin, North Dakota

    SciTech Connect (OSTI)

    Berg, R.R. (Texas A and M Univ., College Station (USA))

    1990-05-01T23:59:59.000Z

    Hydrodynamic effects on oil accumulations generally can be recognized at an early stage of exploration, but become of critical importance with increased drilling and discoveries. At the mature stage, hydrodynamic concepts readily can be applied in exploration and development to reduce risk and to increase success ratios. The south flank of the Williston basin is an example of a mature area with significant hydrodynamic effects on accumulation. Early exploration was aimed at stratigraphic traps in the Mission Canyon Formation but the development of major fields showed that all are strongly influenced by hydrodynamic flow and some may be largely independent of porosity pinchouts. Examples of hydrodynamic effects are illustrated by the Billings Nose fields, and the Elkhorn Ranch and Knutson fields. These accumulations have hydrodynamic gradients on the order of 20 ft/mi (4 m/km) or more; tilted oil-water contacts with gradient of 30 to 50 ft/mi (6 to 10 m/km); displacement of oil downdip to the northeast; and variable formation water salinities that range from nearly fresh to highly saline. Some producing zones have been described as purely hydrodynamic traps, lacking both structural and stratigraphic closure. Future success will depend on applying hydrodynamic concepts in exploration and development, and prediction methods are illustrated by possible extensions to existing one-well fields. Simple graphic techniques can estimate the limits of production before drilling, but a knowledge of local structure is most important to the interpretation.

  8. Newer method for analyzing naphthenic acids in petroleum

    SciTech Connect (OSTI)

    Fan, T.P. (Shell Development Co., Houston, TX (United States))

    1990-08-01T23:59:59.000Z

    The naphthenic acids in petroleum are considered a class of biological markers. Their potential use in source correlation and as indicator of biodegradation have been reported in the past. Their presence in waste water at refineries may also cause corrosion problems and fish toxicity. Due to their highly complicated nature, detailed characterization of the acids has been difficult and time consuming. This talk will describe a relatively simple approach in characterizing the acids based on their group types. The acids were first separated from petroleum followed by mass spectrometric determinations. Two newer methods were developed to analyze the acid components, namely Chemical Ionization with NF{sub 3} as reagent gas and negative ion Fast Atom Bombardment. The geochemical interpretation based on acid distribution will be demonstrated with a set of well understood crude oil samples.

  9. Wavelet methods and statistical applications: network security and bioinformatics

    E-Print Network [OSTI]

    Kwon, Deukwoo

    2005-11-01T23:59:59.000Z

    Wavelet methods possess versatile properties for statistical applications. We would like to explore the advantages of using wavelets in the analyses in two different research areas. First of all, we develop an integrated tool for online detection...

  10. Analyzing manufacturing methods of carbon nanotubes for commercialization

    E-Print Network [OSTI]

    Dee, H. Devin (Herbert Devin)

    2013-01-01T23:59:59.000Z

    This research explores the history and structure of carbon nanotubes and the current technologies and methods available for synthesizing, purifying, and assembling carbon nanotubes. Furthermore, the current state of ...

  11. Redshift drift exploration for interacting dark energy

    E-Print Network [OSTI]

    Geng, Jia-Jia; Zhang, Jing-Fei; Zhang, Xin

    2015-01-01T23:59:59.000Z

    By detecting redshift drift in the spectra of Lyman-$\\alpha$ forest of distant quasars, Sandage-Loeb (SL) test directly measures the expansion of the universe, covering the "redshift desert" of $2 \\lesssim z \\lesssim5$. Thus this method is definitely an important supplement to the other geometric measurements and will play a crucial role in cosmological constraints. In this paper, we quantify the ability of SL test signal by a CODEX-like spectrograph for constraining interacting dark energy. Four typical interacting dark energy models are considered: (\\romannumeral1) $Q=\\gamma H\\rho_c$, (\\romannumeral2) $Q=\\gamma H\\rho_{de}$, (\\romannumeral3) $Q=\\gamma H_0\\rho_c$, and (\\romannumeral4) $Q=\\gamma H_0\\rho_{de}$. The results show that for all the considered interacting dark energy models, relative to the current joint SN+BAO+CMB+$H_0$ observations, the constraints on $\\Omega_m$ and $H_0$ would be improved by about 60\\% and 30--40\\%, while the constraints on $w$ and $\\gamma$ would be slightly improved, with a 30-y...

  12. EXPLORING THE MORPHOLOGY OF RAVE STELLAR SPECTRA

    SciTech Connect (OSTI)

    Matijevic, G.; Zwitter, T. [Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana (Slovenia); Bienayme, O.; Siebert, A. [Observatoire de Strasbourg, Universite de Strasbourg, CNRS, 11 rue de l'universite, 67000 Strasbourg (France); Bland-Hawthorn, J. [Sydney Institute for Astronomy, University of Sydney, NSW 2006 (Australia); Boeche, C.; Grebel, E. K. [Astronomisches Rechen-Institut, Zentrum fuer Astronomie der Universitaet Heidelberg, Moenchhofstr. 12-14, 69120 Heidelberg (Germany); Freeman, K. C. [Research School of Astronomy and Astrophysics, Australia National University, Weston Creek, Canberra, ACT 2611 (Australia); Gibson, B. K. [Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 3TE (United Kingdom); Gilmore, G. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA (United Kingdom); Helmi, A. [Kapteyn Astronomical Institute, University of Groningen, P.O. Box 800, 9700 AV Groningen (Netherlands); Munari, U. [INAF Osservatorio Astronomico di Padova, 36012 Asiago (Italy); Navarro, J. [Department of Physics and Astronomy, University of Victoria, Victora, BC V8P 5C2 (Canada); Parker, Q. A.; Reid, W. [Department of Physics and Astronomy, Macquarie University, NSW 2109 (Australia); Seabroke, G. [Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking RH5 6NT (United Kingdom); Siviero, A. [Department of Astronomy, Padova University, Vicolo dell'Osservatorio 2, 35122 Padova (Italy); Steinmetz, M.; Williams, M. [Leibniz-Institut fuer Astrophysik Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam (Germany); Watson, F. G., E-mail: gal.matijevic@fmf.uni-lj.si [Australian Astronomical Observatory, P.O. Box 296, Epping, NSW 2121 (Australia); and others

    2012-06-01T23:59:59.000Z

    The RAdial Velocity Experiment (RAVE) is a medium-resolution (R {approx} 7500) spectroscopic survey of the Milky Way that has already obtained over half a million stellar spectra. They present a randomly selected magnitude-limited sample, so it is important to use a reliable and automated classification scheme that identifies normal single stars and discovers different types of peculiar stars. To this end, we present a morphological classification of {approx}350, 000 RAVE survey stellar spectra using locally linear embedding, a dimensionality reduction method that enables representing the complex spectral morphology in a low-dimensional projected space while still preserving the properties of the local neighborhoods of spectra. We find that the majority of all spectra in the database ({approx} 90%-95%) belong to normal single stars, but there is also a significant population of several types of peculiars. Among them, the most populated groups are those of various types of spectroscopic binary and chromospherically active stars. Both of them include several thousands of spectra. Particularly the latter group offers significant further investigation opportunities since activity of stars is a known proxy of stellar ages. Applying the same classification procedure to the sample of normal single stars alone shows that the shape of the projected manifold in two-dimensional space correlates with stellar temperature, surface gravity, and metallicity.

  13. ADVANCED RADIOISOTOPE HEAT SOURCE AND PROPULSION SYSTEMS FOR PLANETARY EXPLORATION

    SciTech Connect (OSTI)

    R. C. O'Brien; S. D. Howe; J. E. Werner

    2010-09-01T23:59:59.000Z

    The exploration of planetary surfaces and atmospheres may be enhanced by increasing the range and mobility of a science platform. Fundamentally, power production and availability of resources are limiting factors that must be considered for all science and exploration missions. A novel power and propulsion system is considered and discussed with reference to a long-range Mars surface exploration mission with in-situ resource utilization. Significance to applications such as sample return missions is also considered. Key material selections for radioisotope encapsulation techniques are presented.

  14. Characterization of radioactive contamination inside pipes with the Pipe Explorer{trademark} system. Final report

    SciTech Connect (OSTI)

    Cremer, C.D.; Kendrick, D.T.; Lowry, W.; Cramer, E.

    1997-09-30T23:59:59.000Z

    The Department of Energy (DOE) is currently in the process of decommissioning and dismantling many of its nuclear materials processing facilities that have been in use for several decades. Site managers throughout the DOE complex must employ the safest and most cost effective means to characterize, remediate and recycle or dispose of hundreds of miles of potentially contaminated piping and duct work. The DOE discovered that standard characterization methods were inadequate for its pipes, drains, and ducts because many of the systems are buried or encased. In response to the DOE`s need for a more specialized characterization technique, Science and Engineering Associates, Inc. (SEA) developed the Pipe Explorer{trademark} system through a DOE Office of Science and Technology (OST) contract administered through the Federal Energy Technology Center (FETC). The purpose of this report is to serve as a comprehensive overview of all phases of the Pipe Explorer{trademark} development project. The report is divided into 6 sections. Section 2 of the report provides an overview of the Pipe Explorer{trademark} system, including the operating principles of using an inverting membrane to tow sensors into pipes. The basic components of the characterization system are also described. Descriptions of the various deployment systems are given in Section 3 along with descriptions of the capabilities of the deployment systems. During the course of the development project 7 types of survey instruments were demonstrated with the Pipe Explorer{trademark} and are a part of the basic toolbox of instruments available for use with the system. These survey tools are described in Section 4 along with their typical performance specifications. The 4 demonstrations of the system are described chronologically in Section 5. The report concludes with a summary of the history, status, and future of the Pipe Explorer{trademark} system in Section 6.

  15. Estimating Methods

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1997-03-28T23:59:59.000Z

    Based on the project's scope, the purpose of the estimate, and the availability of estimating resources, the estimator can choose one or a combination of techniques when estimating an activity or project. Estimating methods, estimating indirect and direct costs, and other estimating considerations are discussed in this chapter.

  16. Characterization methods

    SciTech Connect (OSTI)

    Glass, J.T. [North Carolina State Univ., Raleigh (United States)

    1993-01-01T23:59:59.000Z

    Methods discussed in this compilation of notes and diagrams are Raman spectroscopy, scanning electron microscopy, transmission electron microscopy, and other surface analysis techniques (auger electron spectroscopy, x-ray photoelectron spectroscopy, electron energy loss spectroscopy, and scanning tunnelling microscopy). A comparative evaluation of different techniques is performed. In-vacuo and in-situ analyses are described.

  17. TOUGHREACT User's Guide: A Simulation Program for Non-isothermal Multiphase Reactive Geochemical Transport in Variably Saturated Geologic Media, V1.2.1

    SciTech Connect (OSTI)

    Xu, Tianfu; Sonnenthal, Eric; Spycher, Nicolas; Pruess, Karsten

    2008-09-29T23:59:59.000Z

    Coupled modeling of subsurface multiphase fluid and heat flow, solute transport, and chemical reactions can be applied to many geologic systems and environmental problems, including geothermal systems, diagenetic and weathering processes, subsurface waste disposal, acid mine drainage remediation, contaminant transport, and groundwater quality. TOUGHREACT has been developed as a comprehensive non-isothermal multi-component reactive fluid flow and geochemical transport simulator to investigate these and other problems. A number of subsurface thermo-physical-chemical processes are considered under various thermohydrological and geochemical conditions of pressure, temperature, water saturation, and ionic strength. TOUGHREACT can be applied to one-, two- or three-dimensional porous and fractured media with physical and chemical heterogeneity. The code can accommodate any number of chemical species present in liquid, gas and solid phases. A variety of equilibrium chemical reactions are considered, such as aqueous complexation, gas dissolution/exsolution, and cation exchange. Mineral dissolution/precipitation can take place subject to either local equilibrium or kinetic controls, with coupling to changes in porosity and permeability and capillary pressure in unsaturated systems. Chemical components can also be treated by linear adsorption and radioactive decay. The first version of the non-isothermal reactive geochemical transport code TOUGHREACT was developed (Xu and Pruess, 1998) by introducing reactive geochemistry into the framework of the existing multi-phase fluid and heat flow code TOUGH2 (Pruess, 1991). TOUGHREACT was further enhanced with the addition of (1) treatment of mineral-water-gas reactive-transport under boiling conditions, (2) an improved HKF activity model for aqueous species, (3) gas species diffusion coefficients calculated as a function of pressure, temperature, and molecular properties, (4) mineral reactive surface area formulations for fractured and porous media, and (5) porosity, permeability, and capillary pressure changes owing to mineral precipitation/dissolution (Sonnenthal et al., 1998, 2000, 2001; Spycher et al., 2003a). Subsequently, TOUGH2 V2 was released with additional EOS modules and features (Pruess et al., 1999). The present version of TOUGHREACT includes all of the previous extensions to the original version, along with the replacement of the original TOUGH2 (Pruess, 1991) by TOUGH2 V2 (Pruess et al., 1999). TOUGHREACT has been applied to a wide variety of problems, some of which are included as examples, such as: (1) Supergene copper enrichment (Xu et al., 2001); (2) Mineral alteration in hydrothermal systems (Xu and Pruess, 2001a; Xu et al., 2004b; Dobson et al., 2004); (3) Mineral trapping for CO{sub 2} disposal in deep saline aquifers (Xu et al., 2003b and 2004a); (4) Coupled thermal, hydrological, and chemical processes in boiling unsaturated tuff for the proposed nuclear waste emplacement site at Yucca Mountain, Nevada (Sonnenthal et al., 1998, 2001; Sonnenthal and Spycher, 2000; Spycher et al., 2003a, b; Xu et al., 2001); (5) Modeling of mineral precipitation/dissolution in plug-flow and fracture-flow experiments under boiling conditions (Dobson et al., 2003); (6) Calcite precipitation in the vadose zone as a function of net infiltration (Xu et al., 2003); and (7) Stable isotope fractionation in unsaturated zone pore water and vapor (Singleton et al., 2004). The TOUGHREACT program makes use of 'self-documenting' features. It is distributed with a number of input data files for sample problems. Besides providing benchmarks for proper code installation, these can serve as a self-teaching tutorial in the use of TOUGHREACT, and they provide templates to help jump-start new applications. The fluid and heat flow part of TOUGHREACT is derived from TOUGH2 V2, so in addition to the current manual, users must have the manual of the TOUGH2 V2 (Pruess et al., 1999). The present version of TOUGHREACT provides the following TOUGH2 fluid property or 'EOS' (equation-of-state) modules: (1) EOS1 for

  18. Edinburgh Research Explorer Pulmonary diesel particulate increases susceptibility to

    E-Print Network [OSTI]

    Millar, Andrew J.

    Edinburgh Research Explorer Pulmonary diesel particulate increases susceptibility to myocardial, MR & Gray, GA 2014, 'Pulmonary diesel particulate increases susceptibility to myocardial ischemia. Pulmonary diesel particulate increases susceptibility to myocardial ischemia/reperfusion injury via

  19. Analysis Of Application Of Electronics In Exploration And Exploitation...

    Open Energy Info (EERE)

    Of Electronics In Exploration And Exploitation Of Geothermal-Energy Sources In India Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Analysis Of...

  20. Two-Meter Temperature Surveys for Geothermal Exploration Project...

    Open Energy Info (EERE)

    Two-Meter Temperature Surveys for Geothermal Exploration Project at NAS Fallon Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Two-Meter...

  1. Lunar lander propellant production for a multiple site exploration mission

    E-Print Network [OSTI]

    Neubert, Joshua, 1981-

    2004-01-01T23:59:59.000Z

    A model has been developed to analyze the benefit of utilizing a processing plant architecture so that a lunar oxygen production demonstration mission can also provide a significant exploration and scientific return. This ...

  2. Space Nuclear Program INL's role in energizing exploration

    ScienceCinema (OSTI)

    Idaho National Laboratory

    2010-01-08T23:59:59.000Z

    Idaho National Laboratory is helping make space exploration possible with the development of radioisotope power systems, which can work in areas too harsh and too isolated in space where the suns rays cannot be used for energy.

  3. Design space exploration and optimization using modern ship design tools

    E-Print Network [OSTI]

    Jones, Adam T. (Adam Thomas)

    2014-01-01T23:59:59.000Z

    Modern Naval Architects use a variety of computer design tools to explore feasible options for clean sheet ship designs. Under the Naval Sea Systems Command (NAVSEA), the Naval Surface Warfare Center, Carderock Division ...

  4. Deployment algorithms for multi-agent exploration and patrolling

    E-Print Network [OSTI]

    Volkov, Mikhail, S.M. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    Exploration and patrolling are central themes in distributed robotics. These deployment scenarios have deep fundamental importance in robotics, beyond the most obvious direct applications, as they can be used to model a ...

  5. Exploring the material properties of small scale folded structures

    E-Print Network [OSTI]

    Uberti, Megan E

    2013-01-01T23:59:59.000Z

    make robotics more readily available to the average person. Although designs for a number of successful printable robots have already been produced, there has been little formal exploration into the materials properties ...

  6. From Exploration to Planning Cornelius Weber and Jochen Triesch

    E-Print Network [OSTI]

    Weber, Cornelius

    From Exploration to Planning Cornelius Weber and Jochen Triesch Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe University, Ruth-Moufang-StraÃ?e 1, Frankfurt am Main, Germany {c.weber

  7. A Trade Space Model for Robotic Lunar Exploration

    E-Print Network [OSTI]

    SSL # 11-10 #12;#12;A Trade Space Model for Robotic Lunar Exploration Zachary James Bailey, David W. Miller June 2010 SSL # 11-10 This work is based with minor corrections on the text of the thesis

  8. Hyperspectral mineral mapping in support of geothermal exploration...

    Open Energy Info (EERE)

    mineral mapping in support of geothermal exploration- Examples from Long Valley Caldera, CA and Dixie Valley, NV, USA Jump to: navigation, search OpenEI Reference LibraryAdd to...

  9. Tradespace model for planetary surface exploration hopping vehicles

    E-Print Network [OSTI]

    Cunio, Phillip M

    2012-01-01T23:59:59.000Z

    Robotic planetary surface exploration, which has greatly benefited humankind's scientific knowledge of the solar system, has to date been conducted by sedentary landers or by slow, terrain-limited rovers. However, there ...

  10. Children's School November 2014 Director's Corner: Exploring Nature

    E-Print Network [OSTI]

    Park, we have broadened our recycling and composting programs, and we have added more natural elements hunt for trees and the Kindergarten's search for living and non-living things). Those explorations led

  11. Exploring the Last Electromagnetic Frontier with the Long Wavelength Array

    E-Print Network [OSTI]

    Ellingson, Steven W.

    LWA Science with the Long Wavelength Demonstrator Array Radio transients offer a new frontier for next-generationExploring the Last Electromagnetic Frontier with the Long Wavelength Array The University of New. All solar system giant planets generate

  12. T-593: Microsoft Internet Explorer unspecified code execution

    Broader source: Energy.gov [DOE]

    Unspecified vulnerability in Microsoft Internet Explorer 8 on Windows 7 allows remote attackers to bypass Protected Mode and create arbitrary files by leveraging access to a Low integrity process.

  13. Scientific Visualization Applications in Oil & Gas Exploration and Production

    E-Print Network [OSTI]

    Lewiner, Thomas (Thomas Lewiner)

    Scientific Visualization Applications in Oil & Gas Exploration and Production SIBGRAPI 2009 #12 Property cross plots #12;Oil and gas production analysis and optimization SIBGRAPI 2009 Structural maps with property distributions Well schematics Production network Gas injection optimization Reservoir slices #12

  14. Geothermal Exploration Using Aviris Remote Sensing Data Over...

    Open Energy Info (EERE)

    Aviris Remote Sensing Data Over Fish Lake Valley, Nv Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Geothermal Exploration Using Aviris Remote...

  15. Geothermal Resources Exploration And Assessment Around The Cove...

    Open Energy Info (EERE)

    Exploration And Assessment Around The Cove Fort-Sulphurdale Geothermal Field In Utah By Multiple Geophysical Imaging Jump to: navigation, search OpenEI Reference LibraryAdd to...

  16. Transportation & Work: Exploring Car Usage and Employment Outcomes

    E-Print Network [OSTI]

    Bertini, Robert L.

    Transportation & Work: Exploring Car Usage and Employment Outcomes in the LSAL Data Field Area...................................................................................................10 5. DESCRIPTIVE STATISTICS of 1996, or "welfare reform," attention turned to the role of transportation in job search and employment

  17. Two urban corners : a design exploration for the Holloway block

    E-Print Network [OSTI]

    Cabot, Thomas Dudley

    1982-01-01T23:59:59.000Z

    This thesis explores built possibilities for two public street corners at the Holloway Block in Burlington, Vermont The site is at the historic commercial center of the town, and consisted until recently of abandoned ...

  18. Collaborative Systems Thinking Research: Exploring systems thinking within teams

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Collaborative Systems Thinking Research: Exploring systems thinking within teams Caroline T. Lamb research that seeks to develop an empirical basis for collaborative systems thinking, defined as "an of thinking styles, design processes, tools, and communication media to consider system attributes

  19. Kampala's shitscape: exploring urbanity and sanitation in Uganda 

    E-Print Network [OSTI]

    Terreni Brown, Stephanie Elizabeth; Brown, Stephanie

    2014-11-27T23:59:59.000Z

    In this thesis, I explore the collective excrement apparatus of Kampala, or the “shitscape”. I consider the diverse ways that the city’s inhabitants utilise different materials to manage their daily defecation, from flush ...

  20. Property:ExplorationSubGroup | 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 Home5b9fcbce19 No revisionEnvReviewNonInvasiveExploration Jump to: navigation,ExplorationPermitAgency-Drilling Property

  1. Property:ExplorationTimePerMetric | 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 Home5b9fcbce19 No revisionEnvReviewNonInvasiveExploration Jump to: navigation,ExplorationPermitAgency-Drilling

  2. North African geology: exploration matrix for potential major hydrocarbon discoveries

    SciTech Connect (OSTI)

    Kanes, W.H.; O'Connor, T.E.

    1985-02-01T23:59:59.000Z

    Based on results and models presented previously, it is possible to consider an exploration matrix that examines the 5 basic exploration parameters: source, reservoir, timing, structure, and seal. This matrix indicates that even those basins that have had marginal exploration successes, including the Paleozoic megabasin and downfaulted Triassic grabens of Morocco, the Cyrenaican platform of Libya, and the Tunisia-Sicily shelf, have untested plays. The exploration matrix also suggests these high-risk areas could change significantly, if one of the 5 basic matrix parameters is upgraded or if adjustments in political or financial risk are made. The Sirte basin and the Gulf of Suez, 2 of the more intensely explored areas, also present attractive matrix prospects, particularly with deeper Nubian beds or with the very shallow Tertiary sections. The Ghadames basin of Libya and Tunisia shows some potential, but its evaluation responds strongly to stratigraphic and external nongeologic matrix variations based on degree of risk exposure to be assumed. Of greatest risk in the matrix are the very deep Moroccan Paleozoic clastic plays and the Jurassic of Sinai. However, recent discoveries may upgrade these untested frontier areas. Based on the matrix generated by the data presented at a North African Petroleum Geology symposium, significant hydrocarbon accumulations are yet to be found. The remaining questions are: where in the matrix does each individual company wish to place its exploration capital and how much should be the risk exposure.

  3. RISK REDUCTION WITH A FUZZY EXPERT EXPLORATION TOOL

    SciTech Connect (OSTI)

    Robert S. Balch; Ron Broadhead

    2005-03-01T23:59:59.000Z

    Incomplete or sparse data such as geologic or formation characteristics introduce a high level of risk for oil exploration and development projects. ''Expert'' systems developed and used in several disciplines and industries have demonstrated beneficial results when working with sparse data. State-of-the-art expert exploration tools, relying on a database, and computer maps generated by neural networks and user inputs, have been developed through the use of ''fuzzy'' logic, a mathematical treatment of imprecise or non-explicit parameters and values. Oil prospecting risk has been reduced with the use of these properly verified and validated ''Fuzzy Expert Exploration (FEE) Tools.'' Through the course of this project, FEE Tools and supporting software were developed for two producing formations in southeast New Mexico. Tools of this type can be beneficial in many regions of the U.S. by enabling risk reduction in oil and gas prospecting as well as decreased prospecting and development costs. In today's oil industry environment, many smaller exploration companies lack the resources of a pool of expert exploration personnel. Downsizing, volatile oil prices, and scarcity of domestic exploration funds have also affected larger companies, and will, with time, affect the end users of oil industry products in the U.S. as reserves are depleted. The FEE Tools benefit a diverse group in the U.S., allowing a more efficient use of scarce funds, and potentially reducing dependence on foreign oil and providing lower product prices for consumers.

  4. Small Body Exploration Technologies as Precursors for Interstellar Robotics

    SciTech Connect (OSTI)

    Noble, Robert; /SLAC; Sykes, Mark V.; /PSI, Tucson

    2012-02-15T23:59:59.000Z

    The scientific activities undertaken to explore our Solar System will be the same as required someday at other stars. The systematic exploration of primitive small bodies throughout our Solar System requires new technologies for autonomous robotic spacecraft. These diverse celestial bodies contain clues to the early stages of the Solar System's evolution as well as information about the origin and transport of water-rich and organic material, the essential building blocks for life. They will be among the first objects studied at distant star systems. The technologies developed to address small body and outer planet exploration will form much of the technical basis for designing interstellar robotic explorers. The Small Bodies Assessment Group, which reports to NASA, initiated a Technology Forum in 2011 that brought together scientists and technologists to discuss the needs and opportunities for small body robotic exploration in the Solar System. Presentations and discussions occurred in the areas of mission and spacecraft design, electric power, propulsion, avionics, communications, autonomous navigation, remote sensing and surface instruments, sampling, intelligent event recognition, and command and sequencing software. In this paper, the major technology themes from the Technology Forum are reviewed, and suggestions are made for developments that will have the largest impact on realizing autonomous robotic vehicles capable of exploring other star systems.

  5. Update on petroleum exploration activities in the Philippines

    SciTech Connect (OSTI)

    Salcedo, B.H.C.; Bausa, G.J.G.; Ocampo. I.U. [and others

    1996-12-31T23:59:59.000Z

    The first significant event in Philippine Petroleum exploration dates back to 1896 with the drilling of Toledo-1 in Cebu by Smith & Bell. From the 1950`s to the 1970`s, widespread exploration activities were carried out but it was only eighty years after the first oil drilling in 1896 that oil was finally discovered in commercial quantity in Northwest Palawan. This could be attributed to the fact that serious exploration for petroleum was made with the enactment of Presidential Decree No. 87, better known as the {open_quotes}Oil Exploration and Development Act of 1972{close_quotes}, which takes into effect the current Service Contract System. Amendments to P.D. No. 87 is underway to further improve its incentive package and make it more attractive to explorationists. Petroleum exploration in the Philippines continues to be an energetic industry even if the players are not always rewarded with finds. Frontier areas have become attractive for exploration in view of the continuing research studies resulting to increased database thereat. While Northwest Palawan continues to be the hub of action, frontier areas as well as the more risky deepwater acreages still generate interests, if one wishes to be an active player in a growing energy-hungry economy.

  6. Update on petroleum exploration activities in the Philippines

    SciTech Connect (OSTI)

    Salcedo, B.H.C.; Bausa, G.J.G.; Ocampo. I.U. (and others)

    1996-01-01T23:59:59.000Z

    The first significant event in Philippine Petroleum exploration dates back to 1896 with the drilling of Toledo-1 in Cebu by Smith Bell. From the 1950's to the 1970's, widespread exploration activities were carried out but it was only eighty years after the first oil drilling in 1896 that oil was finally discovered in commercial quantity in Northwest Palawan. This could be attributed to the fact that serious exploration for petroleum was made with the enactment of Presidential Decree No. 87, better known as the [open quotes]Oil Exploration and Development Act of 1972[close quotes], which takes into effect the current Service Contract System. Amendments to P.D. No. 87 is underway to further improve its incentive package and make it more attractive to explorationists. Petroleum exploration in the Philippines continues to be an energetic industry even if the players are not always rewarded with finds. Frontier areas have become attractive for exploration in view of the continuing research studies resulting to increased database thereat. While Northwest Palawan continues to be the hub of action, frontier areas as well as the more risky deepwater acreages still generate interests, if one wishes to be an active player in a growing energy-hungry economy.

  7. 20 Years of Four HCI Conferences: A Visual Exploration 1 Running head: 20 YEARS OF FOUR HCI CONFERENCES: A VISUAL EXPLORATION

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    with the exploration process that produced them. Some expected patterns emerged, such as that -- like most social20 Years of Four HCI Conferences: A Visual Exploration 1 Running head: 20 YEARS OF FOUR HCI CONFERENCES: A VISUAL EXPLORATION 20 Years of Four HCI Conferences: A Visual Exploration Nathalie Henry INRIA

  8. Hp-spectral Methods for Structural Mechanics and Fluid Dynamics Problems

    E-Print Network [OSTI]

    Ranjan, Rakesh

    2011-08-08T23:59:59.000Z

    based finite element methods with the Penalty finite element method are presented for modelling porous media flow problems. Finally, we explore applications to some CFD problems namely, the flow past a cylinder and forward facing step....

  9. EQ3NR, a computer program for geochemical aqueous speciation-solubility calculations: Theoretical manual, user`s guide, and related documentation (Version 7.0); Part 3

    SciTech Connect (OSTI)

    Wolery, T.J.

    1992-09-14T23:59:59.000Z

    EQ3NR is an aqueous solution speciation-solubility modeling code. It is part of the EQ3/6 software package for geochemical modeling. It computes the thermodynamic state of an aqueous solution by determining the distribution of chemical species, including simple ions, ion pairs, and complexes, using standard state thermodynamic data and various equations which describe the thermodynamic activity coefficients of these species. The input to the code describes the aqueous solution in terms of analytical data, including total (analytical) concentrations of dissolved components and such other parameters as the pH, pHCl, Eh, pe, and oxygen fugacity. The input may also include a desired electrical balancing adjustment and various constraints which impose equilibrium with special pure minerals, solid solution end-member components (of specified mole fractions), and gases (of specified fugacities). The code evaluates the degree of disequilibrium in terms of the saturation index (SI = 1og Q/K) and the thermodynamic affinity (A = {minus}2.303 RT log Q/K) for various reactions, such as mineral dissolution or oxidation-reduction in the aqueous solution itself. Individual values of Eh, pe, oxygen fugacity, and Ah (redox affinity) are computed for aqueous redox couples. Equilibrium fugacities are computed for gas species. The code is highly flexible in dealing with various parameters as either model inputs or outputs. The user can specify modification or substitution of equilibrium constants at run time by using options on the input file.

  10. Sedimentological, mineralogical and geochemical definition of oil-shale facies in the lower Parachute Creek Member of Green River Formation, Colorado

    SciTech Connect (OSTI)

    Cole, R.D.

    1984-04-01T23:59:59.000Z

    Sedimentological, mineralogical and geochemical studies of two drill cores penetrating the lower Saline zone of the Parachute Creek Member (middle L-4 oil-shale zone through upper R-2 zone) of the Green River Formation in north-central Piceance Creek basin, Colorado, indicate the presence of two distinct oil-shale facies. The most abundant facies has laminated stratification and frequently occurs in the L-4, L-3 and L-2 oil-shale zones. The second, and subordinate facies, has ''streaked and blebby'' stratification and is most abundant in the R-4, R-3 and R-2 zones. Laminated oil shale originated by slow, regular sedimentation during meromictic phases of ancient Lake Uinta, whereas streaked and blebby oil shale was deposited by episodic, non-channelized turbidity currents. Laminated oil shale has higher contents of nahcolite, dawsonite, quartz, K-feldspar and calcite, but less dolomite/ankerite and albite than streaked and blebby oil shale. Ca-Mg-Fe carbonate minerals in laminated oil shale have more variable compositions than those in streaked and blebby shales. Streaked and blebby oil shale has more kerogen and a greater diversity of kerogen particles than laminated oil shale. Such variations may produce different pyrolysis reactions when each shale type is retorted.

  11. Microbial and Geochemical Characterization of Wellington Oil Field, Southcentral Kansas, and Potential Applications to Microbial Enhanced Oil Recovery

    E-Print Network [OSTI]

    Huff, Breanna

    2014-08-31T23:59:59.000Z

    in the sampled location. Initial production of early wells ranged from 800 to 2,000 barrels of oil and 300,000 to 500,000 cubic meters of gas daily (Cooperative Refinery Association, 1949). The majority of wells, however, initially produced from 200 to 400... to 15 barrels (Cooperative Refinery Association, 1949). This decrease in productivity led to the undertaking of secondary methods to repressure the reservoir to enhance oil recovery. Water flooding of the Wellington field was initiated in February 1953...

  12. Exploration concept and characteristic of the dinarides stratigraphic and structural model in the Croatian offshore area

    SciTech Connect (OSTI)

    Grandic, S. (Western Geophysical, Isleworth, Middlesex (United Kingdom)); Susterciv, M.; Balas, E. (Ina-Naftaplin, Zagreb (Croatia))

    1993-09-01T23:59:59.000Z

    The Dinarides Mesozoic carbonate platform constitutes an extensive paleogeographic unit of the Neo-Tethys platform system. Despite a large sedimentary complex within the platform displaying good hydrocarbon potential, no economic oil accumulations have as yet been discovered. A detailed study of the latest seismic and well data from the Kornati block and other relevant areas suggests, however, that a modified exploration scenario, based on the following elements, could be proposed: (1) Systematic lateral distribution of potential petroliferous facies between the Istrian-Dalmatian marginal zones and the central zone of the external Dinarides. Also, evidence of regular facies changes during platform evolution. (2) Paleotectonic control of varying depositional environments. These range from extremely restricted (anoxic) conditions, to high-energy zones on the platform margins and the edges of intraplatform basins and lagoons. (3) A link between the structural style of the final platform carbonates and the underlying Permian-Triassic halokinetic deposits. This relationship occurred during the Apulia microplate collision and shearing. (4) Differential platform subsidence and burial of potential source rock during platform evolution. Also, post-platform flysch and Molasse sedimentation. (5) Rotational displacement of potential hydrocarbon reservoirs away from the conventional target of exploratory drilling. An acceptance of the above-mentioned elements, particularly the rotation concept, could contribute toward developing a more effective exploration strategy. This should involve seismostratigraphic and other refined exploration methods in many zones of the Neo-Tethys carbonate platform system characterized by similar rotational displacement.

  13. Tensiometer methods

    DOE Patents [OSTI]

    Grover, Blair K.; Hubbell, Joel M.; Sisson, James B.; Casper, William L.

    2005-12-20T23:59:59.000Z

    A method for collecting data regarding a matric potential of a media includes providing a tensiometer having a stainless steel tensiometer casing, the stainless steel tensiometer casing comprising a tip portion which includes a wetted porous stainless steel membrane through which a matric potential of a media is sensed; driving the tensiometer into the media using an insertion tube comprising a plurality of probe casing which are selectively coupled to form the insertion tube as the tensiometer is progressively driven deeper into the media, wherein the wetted porous stainless steel membrane is in contact with the media; and sensing the matric potential the media exerts on the wetted porous stainless steel membrane by a pressure sensor in fluid hydraulic connection with the porous stainless steel membrane. A tensiometer includes a stainless steel casing.

  14. Casting methods

    DOE Patents [OSTI]

    Marsden, Kenneth C.; Meyer, Mitchell K.; Grover, Blair K.; Fielding, Randall S.; Wolfensberger, Billy W.

    2012-12-18T23:59:59.000Z

    A casting device includes a covered crucible having a top opening and a bottom orifice, a lid covering the top opening, a stopper rod sealing the bottom orifice, and a reusable mold having at least one chamber, a top end of the chamber being open to and positioned below the bottom orifice and a vacuum tap into the chamber being below the top end of the chamber. A casting method includes charging a crucible with a solid material and covering the crucible, heating the crucible, melting the material, evacuating a chamber of a mold to less than 1 atm absolute through a vacuum tap into the chamber, draining the melted material into the evacuated chamber, solidifying the material in the chamber, and removing the solidified material from the chamber without damaging the chamber.

  15. CREATING A GEOLOGIC PLAY BOOK FOR TRENTON-BLACK RIVER APPALACHIAN BASIN EXPLORATION

    SciTech Connect (OSTI)

    Douglas G. Patchen; Katharine Lee Avary; John M. Bocan; Michael Hohn; John B. Hickman; Paul D. Lake; James A. Drahovzal; Christopher D. Laughrey; Jaime Kostelnik; Taury Smith; Ron Riley; Mark Baranoski

    2005-04-01T23:59:59.000Z

    The Trenton-Black River Appalachian Basin Research Consortium has made significant progress toward their goal of producing a geologic play book for the Trenton-Black River gas play. The final product will include a resource assessment model of Trenton-Black River reservoirs; possible fairways within which to concentrate further studies and seismic programs; and a model for the origin of Trenton-Black River hydrothermal dolomite reservoirs. All seismic data available to the consortium have been examined. Synthetic seismograms constructed for specific wells have enabled researchers to correlate the tops of 15 stratigraphic units determined from well logs to seismic profiles in New York, Pennsylvania, Ohio, West Virginia and Kentucky. In addition, three surfaces for the area have been depth converted, gridded and mapped. A 16-layer velocity model has been developed to help constrain time-to-depth conversions. Considerable progress was made in fault trend delineation and seismic-stratigraphic correlation within the project area. Isopach maps and a network of gamma-ray cross sections supplemented with core descriptions allowed researchers to more clearly define the architecture of the basin during Middle and Late Ordovician time, the control of basin architecture on carbonate and shale deposition and eventually, the location of reservoirs in Trenton Limestone and Black River Group carbonates. The basin architecture itself may be structurally controlled, and this fault-related structural control along platform margins influenced the formation of hydrothermal dolomite reservoirs in original limestone facies deposited in high energy environments. This resulted in productive trends along the northwest margin of the Trenton platform in Ohio. The continuation of this platform margin into New York should provide further areas with good exploration potential. The focus of the petrographic study shifted from cataloging a broad spectrum of carbonate rocks that occur in the Trenton-Black River interval to delineation of regional limestone diagenesis in the basin. A consistent basin-wide pattern of marine and burial diagenesis that resulted in relatively low porosity and permeability in the subtidal facies of these rocks has been documented across the study area. Six diagenetic stages have been recognized: four marine diagenesis stages and two burial diagenesis stages. This dominance of extensive marine and burial diagenesis yielded rocks with low reservoir potential, with the exception of fractured limestone and dolostone reservoirs. Commercial amounts of porosity, permeability and petroleum accumulation appear to be restricted to areas where secondary porosity developed in association with hydrothermal fluid flow along faults and fractures related to basement tectonics. A broad range of geochemical and fluid inclusion analyses have aided in a better understanding of the origin of the dolomites in the Trenton and Black River Groups over the study area. The results of these analyses support a hydrothermal origin for all of the various dolomite types found to date. The fluid inclusion data suggest that all of the dolomite types analyzed formed from hot saline brines. The dolomite is enriched in iron and manganese, which supports a subsurface origin for the dolomitizing brine. Strontium isotope data suggest that the fluids passed through basement rocks or immature siliciclastic rocks prior to forming the dolomites. All of these data suggest a hot, subsurface origin for the dolomites. The project database continued to be redesigned, developed and deployed. Production data are being reformatted for standard relational database management system requirements. Use of the project intranet by industry partners essentially doubled during the reporting period.

  16. RISK REDUCTION WITH A FUZZY EXPERT EXPLORATION TOOL

    SciTech Connect (OSTI)

    Robert Balch

    2004-04-08T23:59:59.000Z

    Incomplete or sparse information on types of data such as geologic or formation characteristics introduces a high level of risk for oil exploration and development projects. ''Expert'' systems developed and used in several disciplines and industries have demonstrated beneficial results. A state-of-the-art exploration ''expert'' tool, relying on a computerized database and computer maps generated by neural networks, is being developed through the use of ''fuzzy'' logic, a relatively new mathematical treatment of imprecise or non-explicit parameters and values. Oil prospecting risk can be reduced with the use of a properly developed and validated ''Fuzzy Expert Exploration (FEE) Tool.'' This FEE Tool can be beneficial in many regions of the U.S. by enabling risk reduction in oil and gas prospecting as well as decreased prospecting and development costs. In the 1998-1999 oil industry environment, many smaller exploration companies lacked the resources of a pool of expert exploration personnel. Downsizing, low oil prices, and scarcity of exploration funds have also affected larger companies, and will, with time, affect the end users of oil industry products in the U.S. as reserves are depleted. The FEE Tool will benefit a diverse group in the U.S., leading to a more efficient use of scarce funds, and possibly decreasing dependence on foreign oil and lower product prices for consumers. This fifth annual (and tenth of 12 semi-annual reports) contains a summary of progress to date, problems encountered, plans for the next year, and an assessment of the prospects for future progress. The emphasis during the March 2003 through March 2004 period was directed toward completion of the Brushy Canyon FEE Tool and to Silurian-Devonian geology, and development of rules for the Devonian fuzzy system, and on-line software.

  17. RISK REDUCTION WITH A FUZZY EXPERT EXPLORATION TOOL

    SciTech Connect (OSTI)

    Robert Balch

    2003-10-15T23:59:59.000Z

    Incomplete or sparse information on types of data such as geologic or formation characteristics introduces a high level of risk for oil exploration and development projects. ''Expert'' systems developed and used in several disciplines and industries have demonstrated beneficial results. A state-of-the-art exploration ''expert'' tool, relying on a computerized database and computer maps generated by neural networks, is being developed through the use of ''fuzzy'' logic, a relatively new mathematical treatment of imprecise or non-explicit parameters and values. Oil prospecting risk can be reduced with the use of a properly developed and validated ''Fuzzy Expert Exploration (FEE) Tool.'' This FEE Tool can be beneficial in many regions of the U.S. by enabling risk reduction in oil and gas prospecting as well as decreased prospecting and development costs. In the 1998-1999 oil industry environment, many smaller exploration companies lacked the resources of a pool of expert exploration personnel. Downsizing, low oil prices, and scarcity of exploration funds have also affected larger companies, and will, with time, affect the end users of oil industry products in the U.S. as reserves are depleted. The FEE Tool will benefit a diverse group in the U.S., leading to a more efficient use of scarce funds, and possibly decreasing dependence on foreign oil and lower product prices for consumers. This ninth of ten semi-annual reports contains a summary of progress to date, problems encountered, plans for the next year, and an assessment of the prospects for future progress. The emphasis during the March 2003 through September 2003 period was directed toward Silurian-Devonian geology, development of rules for the fuzzy system, and on-line software.

  18. RISK REDUCTION WITH A FUZZY EXPERT EXPLORATION TOOL

    SciTech Connect (OSTI)

    Robert Balch

    2003-04-15T23:59:59.000Z

    Incomplete or sparse information on types of data such as geologic or formation characteristics introduces a high level of risk for oil exploration and development projects. ''Expert'' systems developed and used in several disciplines and industries have demonstrated beneficial results. A state-of-the-art exploration ''expert'' tool, relying on a computerized database and computer maps generated by neural networks, is being developed through the use of ''fuzzy'' logic, a relatively new mathematical treatment of imprecise or non-explicit parameters and values. Oil prospecting risk can be reduced with the use of a properly developed and validated ''Fuzzy Expert Exploration (FEE) Tool.'' This FEE Tool can be beneficial in many regions of the U.S. by enabling risk reduction in oil and gas prospecting as well as decreased prospecting and development costs. In the 1998-1999 oil industry environment, many smaller exploration companies lacked the resources of a pool of expert exploration personnel. Downsizing, low oil prices, and scarcity of exploration funds have also affected larger companies, and will, with time, affect the end users of oil industry products in the U.S. as reserves are depleted. The pool of experts is much reduced today. The FEE Tool will benefit a diverse group in the U.S., leading to a more efficient use of scarce funds, and possibly decreasing dependence on foreign oil and lower product prices for consumers. This fourth of five annual reports contains a summary of progress to date, problems encountered, plans for the next year, and an assessment of the prospects for future progress. The emphasis during the April 2002 through March 2003 period was directed toward Silurian-Devonian geology, development of rules for the fuzzy system, and on-line software.

  19. Risk Reduction with a Fuzzy Expert Exploration Tool

    SciTech Connect (OSTI)

    Weiss, William W.; Broadhead, Ron; Mundorf, William R.

    2003-03-06T23:59:59.000Z

    A state-of-the-art exploration ''expert'' tool, relying on a computerized database and computer maps generated by neural networks, was developed through the use of ''fuzzy'' logic, a relatively new mathematical treatment of imprecise or non-explicit parameters and values. Oil prospecting risk can be reduced with the use of a properly developed and validated ''Fuzzy Expert Exploration (FEE) Tool.'' This FEE Tool can be beneficial in many regions of the U.S. by enabling risk reduction in oil and gas prospecting as well as decreased prospecting and development costs.

  20. Directional drilling techniques for exploration in-advance of mining

    SciTech Connect (OSTI)

    Kravits, S.J.; Schwoebel, J.J. (REI Underground Exploration Inc., Salt Lake City, UT (United States))

    1994-01-01T23:59:59.000Z

    In-seam directionally drilled horizontal boreholes have provided effective solutions in underground coal mines for methane and water drainage and inherently provide an excellent tool for coalbed exploration. Directionally drilled methane drainage boreholes have identified rapid changes in coalbed elevation, coalbed thickness and faults. Specific directional drilling and coring procedures for exploration in-advance of mining are reviewed in this paper, and also other directional drilling applications including in-mine horizontal gob ventilation boreholes, identification of abandoned workings, and water drainage boreholes.