National Library of Energy BETA

Sample records for gis inpe labsolar

  1. Surface Chemistry of GaP(001) and InP(001) in Contact with Water...

    Office of Scientific and Technical Information (OSTI)

    Surface Chemistry of GaP(001) and InP(001) in Contact with Water Citation Details In-Document Search Title: Surface Chemistry of GaP(001) and InP(001) in Contact with Water ...

  2. Contrasting Behavior of GaP(001) and InP(001) at the Interface...

    Office of Scientific and Technical Information (OSTI)

    Contrasting Behavior of GaP(001) and InP(001) at the Interface with Water Citation Details In-Document Search Title: Contrasting Behavior of GaP(001) and InP(001) at the Interface ...

  3. Atoms.inp Archive: Crystallographic Data from GSECARS

    DOE Data Explorer

    Newville, Matthew

    The Atoms.inp Archive is a collection of crystallographic data for use in XAFS analysis. The crystallographic data is stored as atoms.inp files, which contain all the information necessary to describe the crystal, and can be used by the program ATOMS to generate feff.inp files. These files can then be used by the FEFF program [See http://leonardo.phys.washington.edu/feff/] to calculate a theoretical XAFS spectrum for the crystal. This archive exists because it can take a considerable amount of time to locate a suitable reference for a model structure to use for making theoretical XAFS standards. Even then, references sometimes give non-standard or incomplete crystallographic notation that ATOMS has difficulty interpreting. All of this means that getting a reliable atoms.inp file can take quite a bit of effort. It is hoped that this collection of well-documented and well-tested atoms.inp files will eliminate much of the work in creating theoretical XAFS standards from FEFF. [Taken from http://cars9.uchicago.edu/~newville/adb/]. The collection currently has more than 200 crystal structures, 2748 data files, and it continues to expand. The collection is related to the UWXAFS Project [http://depts.washington.edu/uwxafs/] and to the work of the Consortium for Advanced Radiation Sources (CARS). After searching the Archive, a user may also choose to run the web version of ATOMS software.

  4. Repast vector GIS integration.

    SciTech Connect

    Najlis, R.; North, M. J.; Decision and Information Sciences

    2005-01-01

    Repast now supports the reading, writing, and display of shapefile data. In the Repast-GIS integration, these tasks are generally broken up into two different classes, a data class, and a display class. The data class allows data to be read into Repast from the GIS, and written out from Repast into a GIS format. The current implementation of GIS in Repast is focused on two systems: ESRI ArcMap and OpenMap. This paper will elucidate how to use each of these systems with Repast.

  5. Azimuthally polarized cathodoluminescence from InP nanowires

    SciTech Connect

    Brenny, B. J. M.; Osorio, C. I.; Polman, A.; Dam, D. van; Gómez Rivas, J.

    2015-11-16

    We determine the angle and polarization dependent emission from 1.75 µm and 2.50 µm long InP nanowires by using cathodoluminescence polarimetry. We excite the vertical wires using a 5 keV electron beam, and find that the 880 nm bandgap emission shows azimuthally polarized rings, with the number of rings depending on the wire height. The data agree well with a model in which spontaneous emission from the wire emitted into the far field interferes with emission reflected off the substrate. From the model, the depth range from which the emission is generated is found to be up to 400 nm below the top surface of the wires, well beyond the extent of the primary electron cloud. This enables a probe of the carrier diffusion length in the InP nanowires.

  6. Excited-state spectroscopy of InP quantum dots

    SciTech Connect

    Bertram, D.; Micic, O.I.; Nozik, A.J.

    1998-02-01

    We have measured low-temperature size-selective photoluminescence excitation spectra of high-quality InP quantum dots prepared by collodial chemistry. A set of samples with mean emission energies in the range from 1.9 to 2.2 eV was investigated. All samples have a size distribution of about 10{percent}, resulting in an inhomogeneously broadened photoluminescence lineshape. Due to the finite size distribution, spectra were collected at different detection wavelengths to reveal the energies of the excited excitonic states. The size dependence of the quantization energies of InP nanoparticles was determined by measuring photoluminescence excitation at different detection energies within one sample. Up to eight excited-state transitions in a set of seven samples were observed, as the estimated quantum dot size was scanned from 1.8 to 4.0 nm. A comparison of the observed peaks with a six-band {bold k}{center_dot}{bold p} calculation is given. In contrast to the successful interpretation in the case of CdSe, no agreement between the calculated and the observed excited-state energies is achieved. {copyright} {ital 1998} {ital The American Physical Society}

  7. GIS data | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    GIS data Home NickL's picture Submitted by NickL(137) Contributor 25 June, 2012 - 21:45 GIS keyword geospatial data GIS GIS data Explore the geospatial datasets in OpenEI's...

  8. GIS | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    GIS keyword and include US and global energy data. Search solar, wind, biomass and wave energy resources. Do you have GIS data you would like to share? Please add it to OpenEI's...

  9. Open-Source GIS

    SciTech Connect

    Vatsavai, Raju; Burk, Thomas E; Lime, Steve

    2012-01-01

    The components making up an Open Source GIS are explained in this chapter. A map server (Sect. 30.1) can broadly be defined as a software platform for dynamically generating spatially referenced digital map products. The University of Minnesota MapServer (UMN Map Server) is one such system. Its basic features are visualization, overlay, and query. Section 30.2 names and explains many of the geospatial open source libraries, such as GDAL and OGR. The other libraries are FDO, JTS, GEOS, JCS, MetaCRS, and GPSBabel. The application examples include derived GIS-software and data format conversions. Quantum GIS, its origin and its applications explained in detail in Sect. 30.3. The features include a rich GUI, attribute tables, vector symbols, labeling, editing functions, projections, georeferencing, GPS support, analysis, and Web Map Server functionality. Future developments will address mobile applications, 3-D, and multithreading. The origins of PostgreSQL are outlined and PostGIS discussed in detail in Sect. 30.4. It extends PostgreSQL by implementing the Simple Feature standard. Section 30.5 details the most important open source licenses such as the GPL, the LGPL, the MIT License, and the BSD License, as well as the role of the Creative Commons.

  10. Contrasting Behavior of GaP(001) and InP(001) at the Interface...

    Office of Scientific and Technical Information (OSTI)

    at the Interface with Water Citation Details In-Document Search Title: Contrasting Behavior of GaP(001) and InP(001) at the Interface with Water Authors: Wood, B C ; ...

  11. Advanced Ultra High Performance InP Solar Cells - Energy Innovation...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The new efficiency levels achieved by the NREL researchers have set a new world record for InP solar cell efficiency and were achieved at 25 degrees C at a one sun intensity level. ...

  12. Single-dot optical emission from ultralow density well-isolated InP quantum dots

    SciTech Connect

    Ugur, A.; Hatami, F.; Masselink, W. T.; Vamivakas, A. N.; Lombez, L.; Atatuere, M.

    2008-10-06

    We demonstrate a straightforward way to obtain single well-isolated quantum dots emitting in the visible part of the spectrum and characterize the optical emission from single quantum dots using this method. Self-assembled InP quantum dots are grown using gas-source molecular-beam epitaxy over a wide range of InP deposition rates, using an ultralow growth rate of about 0.01 atomic monolayers/s, a quantum-dot density of 1 dot/{mu}m{sup 2} is realized. The resulting isolated InP quantum dots embedded in an InGaP matrix are individually characterized without the need for lithographical patterning and masks on the substrate. Such low-density quantum dots show excitonic emission at around 670 nm with a linewidth limited by instrument resolution. This system is applicable as a single-photon source for applications such as quantum cryptography.

  13. Defect reaction network in Si-doped InP : numerical predictions.

    SciTech Connect

    Schultz, Peter Andrew

    2013-10-01

    This Report characterizes the defects in the defect reaction network in silicon-doped, n-type InP deduced from first principles density functional theory. The reaction network is deduced by following exothermic defect reactions starting with the initially mobile interstitial defects reacting with common displacement damage defects in Si-doped InP until culminating in immobile reaction products. The defect reactions and reaction energies are tabulated, along with the properties of all the silicon-related defects in the reaction network. This Report serves to extend the results for intrinsic defects in SAND 2012-3313: %E2%80%9CSimple intrinsic defects in InP: Numerical predictions%E2%80%9D to include Si-containing simple defects likely to be present in a radiation-induced defect reaction sequence.

  14. Discharge diagnostics in GIS

    SciTech Connect

    Rutgers, W.R.; Poorts, C.J.H.M.; Verhaart, H.F.A.

    1995-12-31

    Partial discharges in gas insulated substations (GIS) are a pre-stage for electrical breakdown. Several diagnostic techniques have been developed to detect p.d. Optical, acoustical, and electrical detection techniques and chemical analyses of their effects on gas composition have been demonstrated in laboratory experiments and in-situ. The diagnostic techniques can be used to monitor the presence of p.d., to locate the position of the discharge, to classify the type of discharge and, in case of corona, to find the various stages towards breakdown. Calibration of the various techniques is not always easy. Judgement of the risk of the different types of partial discharges to trigger a complete voltage breakdown needs further investigations. In this paper we report on our experiences with the different detection techniques and calibration procedures.

  15. OpenEI Community - GIS

    OpenEI (Open Energy Information) [EERE & EIA]

    keyword and include US and global energy data. Search solar, wind, biomass and wave energy resources.

    Do you have GIS data you would like to share? Please add it...

  16. Ordered InP nanostructures fabricated by Ar{sup +}-ion irradiation

    SciTech Connect

    Mohanta, S.K.; Soni, R.K.; Tripathy, S.; Chua, S.J.

    2006-01-23

    In this letter, we report fabrication of ordered InP nanostructures using 50 keV Ar{sup +}-ion irradiation at normal incidence. The structural and optical properties of these nanodots as a function of ion dose have been investigated. Scanning electron microscopy investigations reveal that the average sizes of the InP nanodots vary from 50 nm to 90 nm as the ion dose increases from 1x10{sup 17} to 1x10{sup 18} cm{sup -2}. Furthermore, an increase in ion dose results in a wider dot size distribution. Apart from the bulk InP band-edge photoluminescence (PL), the surface nanostructuring leads to the observation of an additional PL band at 1.98 eV. Such a blueshifted PL peak could arise due to a combined effect of carrier confinement in the surface nanodots and radiative recombination associated with surface states. The room-temperature micro-Raman investigation of InP nanodots reveals optical phonon softening due to phonon confinement in the surface nanodots.

  17. GIS-Based Infrastructure Modeling

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    GIS-Based Infrastructure Modeling Hydrogen Scenario Meeting August 9-10, 2006 Keith Parks, NREL GIS-Based Infrastructure Modeling * Station Analysis - Selection Criteria - Los Angeles * By 2015 (10 & 20 Station Layouts) * By 2025 (100 & 600 Station Layouts) - NYC * Early Infrastructure (20 stations) Comparison * Station Layouts (SMR, Liquid, Pipeline) * Delivery Discussion Station Selection Criteria * Consumer strategy attributes rated good and above * Proximal to major civic airports *

  18. InP quantum dots: Electronic structure, surface effects, and the redshifted emission

    SciTech Connect

    Fu, H.; Zunger, A.

    1997-07-01

    We present pseudopotential plane-wave electronic-structure calculations on InP quantum dots in an effort to understand quantum confinement and surface effects and to identify the origin of the long-lived and redshifted luminescence. We find that (i) unlike the case in small GaAs dots, the lowest unoccupied state of InP dots is the {Gamma}{sub 1c}-derived direct state rather than the X{sub 1c}-derived indirect state and (ii) unlike the prediction of {bold k}{center_dot}{bold p} models, the highest occupied state in InP dots has a 1sd-type envelope function rather than a (dipole-forbidden) 1pf envelope function. Thus explanations (i) and (ii) to the long-lived redshifted emission in terms of an orbitally forbidden character can be excluded. Furthermore, (iii) fully passivated InP dots have no surface states in the gap. However, (iv) removal of the anion-site passivation leads to a P dangling bond (DB) state just above the valence band, which will act as a trap for photogenerated holes. Similarly, (v) removal of the cation-site passivation leads to an In dangling-bond state below the conduction band. While the energy of the In DB state depends only weakly on quantum size, its radiative lifetime increases with quantum size. The calculated {approximately}300-meV redshift and the {approximately}18 times longer radiative lifetime relative to the dot-interior transition for the 26-{Angstrom} dot with an In DB are in good agreement with the observations of full-luminescence experiments for unetched InP dots. Yet, (vi) this type of redshift due to surface defect is inconsistent with that measured in {ital selective} excitation for HF-etched InP dots. (vii) The latter type of ({open_quotes}resonant{close_quotes}) redshift is compatible with the calculated {ital screened} singlet-triplet splitting in InP dots, suggesting that the slow emitting state seen in selective excitation could be a triplet state. {copyright} {ital 1997} {ital The American Physical Society}

  19. InP single-junction concentrator cell. Semi-annual report, October 1, 1980-March 31, 1981

    SciTech Connect

    Gregory, P.E.

    1981-01-01

    The purpose of this work is to develop a glass-sealed back-contacted InP or InGaAsP solar cell for use in concentrator systems. Work to be performed in developing this cell includes growing the InP epitaxial layers needed for cells and test structures, developing a model to be used in optimizing the cell structure, measurement of InP parameters necessary for use in the model, and developing the glass-bonding and back-contacting scheme. Accomplishments in these areas are discussed.

  20. Two-Step Nucleation and Growth of InP Quantum Dots via Magic-Sized Cluster

    Office of Scientific and Technical Information (OSTI)

    Intermediates (Journal Article) | SciTech Connect Two-Step Nucleation and Growth of InP Quantum Dots via Magic-Sized Cluster Intermediates Citation Details In-Document Search Title: Two-Step Nucleation and Growth of InP Quantum Dots via Magic-Sized Cluster Intermediates We report on the role of magic-sized clusters (MSCs) as key intermediates in the synthesis of indium phosphide quantum dots (InP QDs) from molecular precursors. These observations suggest that previous efforts to control

  1. Two-Step Nucleation and Growth of InP Quantum Dots via Magic-Sized Cluster Intermediates

    DOE PAGES [OSTI]

    Gary, Dylan C.; Terban, Maxwell W.; Billinge, Simon J. L.; Cossairt, Brandi M.

    2015-01-30

    We report on the role of magic-sized clusters (MSCs) as key intermediates in the synthesis of indium phosphide quantum dots (InP QDs) from molecular precursors. These observations suggest that previous efforts to control nucleation and growth by tuning precursor reactivity have been undermined by formation of these kinetically persistent MSCs prior to QD formation. The thermal stability of InP MSCs is influenced by the presence of exogenous bases as well as choice of the anionic ligand set. Addition of a primary amine, a common additive in previous InP QD syntheses, to carboxylate terminated MSCs was found to bypass the formationmore » of MSCs, allowing for homogeneous growth of InP QDs through a continuum of isolable sizes. Substitution of the carboxylate ligand set for a phosphonate ligand set increased the thermal stability of one particular InP MSC to 400°C. The structure and optical properties of the MSCs with both carboxylate and phosphonate ligand sets were studied by UV-Vis absorption spectroscopy, powder XRD analysis, and solution ³¹P{¹H} and ¹H NMR spectroscopy. Finally, the carboxylate terminated MSCs were identified as effective single source precursors (SSPs) for the synthesis of high quality InP QDs. Employing InP MSCs as SSPs for QDs effectively decouples the formation of MSCs from the subsequent second nucleation event and growth of InP QDs. The concentration dependence of this SSP reaction, as well as the shape uniformity of particles observed by TEM suggests that the stepwise growth from MSCs directly to QDs proceeds via a second nucleation event rather than an aggregative growth mechanism.« less

  2. Two-Step Nucleation and Growth of InP Quantum Dots via Magic-Sized Cluster Intermediates

    SciTech Connect

    Gary, Dylan C.; Terban, Maxwell W.; Billinge, Simon J. L.; Cossairt, Brandi M.

    2015-01-30

    We report on the role of magic-sized clusters (MSCs) as key intermediates in the synthesis of indium phosphide quantum dots (InP QDs) from molecular precursors. These observations suggest that previous efforts to control nucleation and growth by tuning precursor reactivity have been undermined by formation of these kinetically persistent MSCs prior to QD formation. The thermal stability of InP MSCs is influenced by the presence of exogenous bases as well as choice of the anionic ligand set. Addition of a primary amine, a common additive in previous InP QD syntheses, to carboxylate terminated MSCs was found to bypass the formation of MSCs, allowing for homogeneous growth of InP QDs through a continuum of isolable sizes. Substitution of the carboxylate ligand set for a phosphonate ligand set increased the thermal stability of one particular InP MSC to 400°C. The structure and optical properties of the MSCs with both carboxylate and phosphonate ligand sets were studied by UV-Vis absorption spectroscopy, powder XRD analysis, and solution ³¹P{¹H} and ¹H NMR spectroscopy. Finally, the carboxylate terminated MSCs were identified as effective single source precursors (SSPs) for the synthesis of high quality InP QDs. Employing InP MSCs as SSPs for QDs effectively decouples the formation of MSCs from the subsequent second nucleation event and growth of InP QDs. The concentration dependence of this SSP reaction, as well as the shape uniformity of particles observed by TEM suggests that the stepwise growth from MSCs directly to QDs proceeds via a second nucleation event rather than an aggregative growth mechanism.

  3. Mechanism of lateral ordering of InP dots grown on InGaP layers

    SciTech Connect

    Bortoleto, J.R.R.; Gutierrez, H.R.; Cotta, M.A.; Bettini, J.

    2005-07-04

    The mechanisms leading to the spontaneous formation of a two-dimensional array of InP/InGaP dots grown by chemical-beam epitaxy are discussed. Samples where the InGaP buffer layer was grown at different conditions were characterized by transmission electron microscopy. Our results indicate that a periodic strain field related to lateral two-dimensional compositional modulation in the InGaP buffer layer determines the dot nucleation positions during InP growth. Although the periodic strain field in the InGaP is large enough to align the InP dots, both their shape and optical properties are effectively unaltered. This result shows that compositional modulation can be used as a tool for in situ dot positioning.

  4. Seeding of InP islands on InAs quantum dot templates

    SciTech Connect

    Medeiros-Ribeiro, G.; Maltez, R. L.; Bernussi, A. A.; Ugarte, D.; de Carvalho, W.

    2001-06-01

    The ability of stacking layers of islands and their corresponding alignment have prompted a number of studies. The main focus so far has been on stacking self-assembled quantum dot (QD) layers of the same material and composition. Our goal is to create systems of coupled QDs of different electronic properties, aiming at hybridization of their different electronic levels. In this work, we investigate the early stages of the coupling of alternate InAs{endash}InP QD layers through a GaAs spacer layer. We have found that by using an InAs layer containing QDs as seeds, we can control the size, shape and density of InP islands by varying the spacer thickness. We have observed a significant improvement of the InP island size uniformity, as well as an induced size reduction, thus providing an extra degree of tunability previously available only through growth kinetics. {copyright} 2001 American Institute of Physics.

  5. Structure of InP (001) surfaces prepared by decapping and by ion bombardment and annealing

    SciTech Connect

    Pahlke, D.; Kinsky, J.; Schultz, C.; Pristovsek, M.; Zorn, M.; Esser, N.; Richter, W.

    1997-07-01

    The structure of InP surfaces prepared by ion bombardment and annealing (IBA) and by decapping of InP (001) samples grown by metal organic vapor phase epitaxy is studied. The structural changes of the surfaces during preparation are monitored by low-energy electron diffraction and related to the surface electronic modifications as revealed by reflectance-anisotropy spectroscopy (RAS). For both preparation methods we find (2{times}4) reconstructions and almost identical RAS spectra. This finding contrasts with previous reports usually claiming a (4{times}2) surface after IBA Auger-electron spectroscopy as well as hydrogen-adsorbate vibrations recorded with high-resolution electron-energy spectroscopy indicate an In-rich surface stoichiometry. {copyright} {ital 1997} {ital The American Physical Society}

  6. The Facility for 500 MeV Plasma Wake-Field Acceleration Experiments at Budker INP

    SciTech Connect

    Petrenko, A. V.; Lotov, K. V.; Logatchov, P. V.; Burdakov, A. V.

    2010-11-04

    The experimental PWFA facility currently under construction at the Budker INP is described. The objective is to use electron and positron beams extracted from the VEPP-5 damping ring in PWFA experiments. Due to longitudinal beam compression many PWFA schemes including the efficient blowout regime as well as multibunch regime can be studied. The simulations of beam dynamics in the facility are presented. Also we propose a simple technique for longitudinal beam slicing using dipole kickers and collimator in the damping ring.

  7. Surface characterization of InP trenches embedded in oxide using scanning probe microscopy

    SciTech Connect

    Mannarino, Manuel E-mail: manuelmannarino@gmail.com; Chintala, Ravi; Vandervorst, Wilfried; Moussa, Alain; Merckling, Clement; Eyben, Pierre; Paredis, Kristof

    2015-12-14

    Metrology for structural and electrical analyses at device level has been identified as one of the major challenges to be resolved for the sub-14 nm technology nodes. In these advanced nodes, new high mobility semiconductors, such as III–V compounds, are grown in narrow trenches on a Si substrate. Probing the nature of the defects, the defect density, and the role of processing steps on the surface of such structures are prime metrology requirements. In order to enable defect analysis on a (III–V) surface, a proper sample preparation for oxide removal is of primary importance. In this work, the effectiveness of different chemical cleanings and thermal annealing procedures is investigated on both blanket InP and oxide embedded InP trenches by means of scanning probe microscopy techniques. It is found that the most effective approach is a combination of an HCl-based chemical cleaning combined with a low-temperature thermal annealing leading to an oxide free surface with atomically flat areas. Scanning tunneling microscopy (STM) has been the preferred method for such investigations on blanket films due to its intrinsic sub-nm spatial resolution. However, its application on oxide embedded structures is non-trivial. To perform STM on the trenches of interest (generally <20 nm wide), we propose a combination of non-contact atomic force microscopy and STM using the same conductive atomic force microscopy tip Our results prove that with these procedures, it is possible to perform STM in narrow InP trenches showing stacking faults and surface reconstruction. Significant differences in terms of roughness and terrace formation are also observed between the blanket and the oxide embedded InP.

  8. Structural characterization of amorphized InP: Evidence for chemical disorder

    SciTech Connect

    Glover, C.J.; Ridgway, M.C.; Yu, K.M.; Foran, G.J.; Lee, T.W.; Moon, Y.; Yoon, E.

    1999-03-01

    Extended x-ray absorption fine-structure measurements at the In {ital K} edge of amorphous InP are presented. The presence of chemical disorder in the form of like-atom bonding has been unambiguously demonstrated in stoichiometric InP amorphized by ion implantation. In{endash}In bonding comprised 14{percent}{plus_minus}4{percent} of the In{endash}atom constituent bonds. Also, relative to the crystalline value of four P atoms, an increase in the total In coordination number to 4.16{plus_minus}0.32 atoms was observed for the amorphous phase, as composed of 3.56{plus_minus}0.19; P and 0.60{plus_minus}0.13; In atoms. Experimental results were consistent with recent {ital ab initio} structural calculations and, furthermore, demonstrated that amorphous InP is best described by a Polk-like continuous random network, containing both even- and odd-membered rings. {copyright} {ital 1999 American Institute of Physics.}

  9. Optical, electronic, and structural properties of uncoupled and close-packed arrays of InP quantum dots

    SciTech Connect

    Micic, O.I.; Jones, K.M.; Cahill, A.; Nozik, A.J.

    1998-12-03

    Solid films consisting of close-packed arrays of InP quantum dots have been prepared by slowly evaporating colloidal solutions of InP quantum dots. The diameters of the quantum dots were controlled to be between about 30 to 60 {angstrom}; size-selective precipitation yielded a size distribution of about 10% about the mean diameter. The arrays show regions of hexagonal order, as well as disordered regions. Oxide layers can form irreversibly on the quantum dot surface and limit the effectiveness of the size-selective precipitation. Photoluminescence spectra obtained from close-packed films of InP quantum dots formed from quantum dots with a single mean diameter and from a mixture of two quantum dot sizes show that energy transfer occurs from the photoexcited smaller quantum dots to the larger quantum dots. The efficiency of this energy transfer process is high.

  10. 19.2% Efficient InP Heterojunction Solar Cell with Electron-Selective TiO2 Contact

    DOE PAGES [OSTI]

    Yin, Xingtian; Battaglia, Corsin; Lin, Yongjing; Chen, Kevin; Hettick, Mark; Zheng, Maxwell; Chen, Cheng-Ying; Kiriya, Daisuke; Javey, Ali

    2014-09-25

    We demonstrate an InP heterojunction solar cell employing an ultrathin layer (~10 nm) of amorphous TiO2 deposited at 120°C by atomic layer deposition as the transparent electron-selective contact. The TiO2 film selectively extracts minority electrons from the conduction band of p-type InP while blocking the majority holes due to the large valence band offset, enabling a high maximum open-circuit voltage of 785 mV. Lastly, a hydrogen plasma treatment of the InP surface drastically improves the long-wavelength response of the device, resulting in a high short-circuit current density of 30.5 mA/cm2 and a high power conversion efficiency of 19.2%.

  11. The Dependence of the Oxidation Enhancement of InP(100) Surface on the Coverage of the Adsorbed Cs

    SciTech Connect

    Sun, Yun

    2010-06-07

    We report the oxidation of the InP(100) surface promoted by adsorbed Cs by synchrotron radiation photoemission. Oxygen exposure causes reduction of the charge transferred to the InP substrate from Cs and the growth of indium oxide and phosphorous oxide. The oxide growth displays a clear dependence on the Cs coverage. The oxidation of phosphorous is negligible up to 1000 L of O{sub 2} exposure when the Cs coverage is less than half a monolayer (ML), but the formation of the second half monolayer of Cs greatly accelerates the oxidation. This different enhancement of the InP oxidation by the first and the second half monolayer of Cs is due to the double layer structure of the adsorbed Cs atoms, and consequently the higher 6s electron density in the Cs atoms when Cs coverage is larger than 0.5 ML.

  12. Electronic properties of InP (001)/HfO{sub 2} (001) interface: Band offsets and oxygen dependence

    SciTech Connect

    KC, Santosh; Dong, Hong; Longo, Roberto C.; Xiong, Ka; Wang, Weichao; Wallace, Robert M.; Cho, Kyeongjae

    2014-01-14

    Using ab-initio methods, atomic structures and electronic properties of InP (001)/HfO{sub 2} (001) interface are studied within the framework of density functional theory. We examine the InP/HfO{sub 2} model interface electronic structures under varying oxidation conditions. The effects of indium and phosphorous concentrations on interfacial bonding, defect states, band offsets, and the thermodynamic stability at the interface are also investigated. The origin of interfacial gap states in InP (001)/HfO{sub 2} (001) interface are proposed, mainly from the P-rich oxides, which is validated by our experimental work. This highlights the importance of surface passivation prior to high-κ deposition based on the in situ spectroscopic results of atomic layer deposition of HfO{sub 2} on InP.

  13. NREL: Dynamic Maps, GIS Data, and Analysis Tools - About GIS at NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    About GIS at NREL NREL's Geospatial Data Science Team analyzes renewable energy resources and many other data sources to determine which energy technologies are viable solutions across the globe and inputs the data into a geographic information system. GIS is a computer-based system used to manipulate, manage, and analyze multidisciplinary geographic and related attribute data. The GIS system is composed of hardware, software, data, and expertise. Using a GIS system allows the user to perform

  14. Toward enterprise GIS design for DOE

    SciTech Connect

    Rich, P. M.; Riggs, T. L.; Witkowski, M. S.; Keating, G. N.

    2004-01-01

    An increasing number of institutions are challenged with implementing robust geographic information system (GIS) capabilities for a large number of individuals through information sharing and interconnected networks. In the past, numerous technological roadblocks hampered successful implementation of enterprise GIS (EGIS). With the advent of high-speed networks, increasingly fast computers, intelligent spatial data serving technologies, improved data architecture, and advances in GIS software, the newest challenge involves integration of the various technological and institutional components. This integration can be viewed as an inevitable stage in the evolution of GIS. Successful EGIS design depends on three elements: (1) distinct stakeholder roles, (2) a complete geospatial data cycle, and (3) proven data warehouse concepts.

  15. Integrated: Geospatial Toolkit GIS data for Nicaragua from NREL...

    OpenEI (Open Energy Information) [EERE & EIA]

    Nicaragua from NREL (Abstract): Geographic Information Systems (GIS) data intended for use in the Geospatial toolkit or with any GIS software. (Purpose): The Solar and Wind Energy...

  16. Integrated: Geospatial Toolkit GIS data for Cuba from NREL -...

    OpenEI (Open Energy Information) [EERE & EIA]

    Cuba from NREL (Abstract): Geographic Information Systems (GIS) data intended for use in the Geospatial toolkit or with any GIS software. (Purpose): The Solar and Wind Energy...

  17. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Geographic...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Geographic Information System Data Background NREL's GIS Team develops technology-specific GIS data maps for a variety of areas, including biomass, geothermal, solar, wind, and...

  18. Controllable growth and optical properties of InP and InP/InAs nanostructures on the sidewalls of GaAs nanowires

    SciTech Connect

    Yan, Xin; Zhang, Xia Li, Junshuai; Cui, Jiangong; Ren, Xiaomin

    2014-12-07

    The growth and optical properties of InP and InP/InAs nanostructures on GaAs nanowires are investigated. InP quantum well and quantum dots (QDs) are formed on the sidewalls of GaAs nanowires successively with increasing the deposition time of InP. The GaAs/InP nanowire heterostructure exhibits a type-II band alignment. The wavelength of the InP quantum well is in the range of 857–892 nm at 77 K, which means that the quantum well is nearly fully strained. The InP quantum dot, which has a bow-shaped cross section, exhibits dislocation-free pure zinc blende structure. Stranski-Krastanow InAs quantum dots are subsequently formed on the GaAs/InP nanowire core-shell structure. The InAs quantum dots are distributed over the middle part of the nanowire, indicating that the In atoms contributing to the quantum dots mainly come from the vapor rather than the substrate. The longest emission wavelength obtained from the InAs QDs is 1039 nm at 77 K. The linewidth is as narrow as 46.3 meV, which is much narrower than those on planar InP substrates and wurtzite InP nanowires, suggesting high-crystal-quality, phase-purity, and size-uniformity of quantum dots.

  19. DOE GIS core team - a best practice

    SciTech Connect

    Bollinger, J.; Bhaduri, Budhendra; Bleakly, D. R.; Brady-Sabeff, Liz; Guber, Al; Guziel, K. A.; Hargrove, Susan; Lee, J.; Lee, R.; Mickus, Kurt; Morehouse, David; Moore, K.; Ramsdell, Amy; Rich, P. M.

    2004-01-01

    Large government organizations such as the Department of Energy (DOE) are challenged with identifying and implementing best geospatial information management practices to ensure that operational needs are met and government objectives are achieved. Geographic Information System (GIS) professionals, complex wide within the Department, conduct spatial information management practices on a daily basis to complete a wide variety of science and engineering tasks. The DOE Office of the CIO recognized the wealth of geospatial information management knowledge within the DOE complex and formed the DOE GIS Core Team in 2001 as a result. The team is comprised of GIS experts-representing all major DOE labs, site facilities, and programs-who volunteer their time to address issues impacting the entire complex. These include the President's management agenda (with emphasis on the Geospatial One-Stop), homeland security, emergency response, site management, software and geospatial data licensing, and federal, national, and international standards governing the creation and dissemination of geospatial data. The strength of the DOE GIS Core Team is the wide diversity of GIS and scientific expertise represented on the team, which allows it to provide the DOE CIO's office with sound guidance on complex wide issues from a GIS practitioner's perspective. The Core Team's mission is 'to foster technical excellence and communication, to identify and advocate best business practices, and to provide sound recommendations on policy and standards.' As a first step toward identifying best practices the feam conducted a survey of all known GIS assets across the DOE complex. The survey identified each site's GIS expertise, operating systems architecture and software applications, major project areas supported, and a number of other metrics important to the operation of a GIS organization. Results of the survey will be discussed, along with the mission of the Core Team. A broad overview of best

  20. Partial discharge and the measurement in GIS

    SciTech Connect

    Han Xiaolian; Feng Yunping; Qiu Yuchang; Zheng Xiaoguang; Chen Jinqing

    1996-12-31

    The focal point of this paper is to study on the partial discharge on-line diagnostic measurement system in GIS from the aspect of electrical measurement assuming that there were not any measurement devices before the GIS being put to use. A length of coaxial cable was wound on a magnetic ring. Also by the use of an impedance alternator, a higher sensitivity was realized. The coil sensor and antenna sensor are the important parts of the perfect partial discharge measurement system in GIS. The sensitivities of the sensors were determined by comparing to the charge quantity measured by 50{Omega} resistance. The characteristics of the partial discharge that was produced by the fixed protrusion, free particles and the surface contamination on spacer was studied in the GIS simulating system.

  1. Insight into the photoelectron angular dependent energy distribution of negative-electron-affinity InP photocathodes

    SciTech Connect

    Chen, Zhanghui; Jiang, Xiangwei; Dong, Shan; Li, Jingbo Li, Shushen; Wang, Linwang

    2014-01-13

    Energy distribution and angular distribution of the photoelectrons from InP photocathodes are investigated using a precise Monte Carlo model. It is found that ?-valley electrons contribute to the first peak of the energy distribution curve, but the second peak is contributed by both ?-valley and L-valley electrons rather than only L-valley electrons. L valley electrons are shown to have a smaller angular spread than ?-valley electrons, which is attributed to the much higher potential energy of L-valley minimum. The further simulation indicates that the performance of InP photocathodes can be improved by increasing the hole concentration or decreasing the temperature, but the activation layer thickness variation only has very slight influence on either energy or angular distribution.

  2. Pseudopotential calculations of electron and hole addition spectra of InAs, InP, and Si quantum dots

    SciTech Connect

    Franceschetti, Alberto; Zunger, Alex

    2000-07-15

    The electron and hole addition energies, the quasiparticle gap, and the optical gap of InAs, InP, and Si quantum dots are calculated using microscopic pseudopotential wave functions. The effects of the dielectric mismatch between the quantum dot and the surrounding material are included using a realistic profile for the dielectric constant {epsilon}(r). We find that the addition energies and the quasiparticle gap depend strongly on the dielectric constant of the environment {epsilon}{sub out}, while the optical gap is rather insensitive to {epsilon}{sub out}. We compare our results with recent tunneling spectroscopy measurements for InAs nanocrystals, finding excellent agreement. Our calculations for the addition energies and the quasiparticle gap of InP and Si nanocrystals serve as predictions for future experiments. (c) 2000 The American Physical Society.

  3. Improved Power Conversion Efficiency of InP Solar Cells Using Organic Window Layers

    SciTech Connect

    Li, N; Lee, K.; Renshaw, C. K.; Xiao, X.; Forrest, Stephen R.

    2011-01-01

    We employ the organic semiconductor 3,4,9,10-perylene-tetracarboxylic-dianhydride (PTCDA) as a nanometer thick window layer for p-InP/indium tin oxide (ITO) Schottky barrierdiodesolar cells. The power conversion efficiency is enhanced compared to ITO/InP cells lacking the PTCDA window layer, primarily due to neutralizing InP surface state charges via hole injection from the PTCDA. This leads to an increased ITO/p-InP Schottky barrier height, and hence to an increased open circuit voltage. The power conversion efficiency of the cells increases from 13.2±0.5% for the ITO/InP cell to 15.4±0.4% for the ITO/4 nm PTCDA/p-InP cell under 1 sun, AM1.5G simulated solar illumination. The PTCDA window layer is also shown to contribute to the photocurrent by light absorption followed by exciton dissociation at the organic/inorganic semiconductor interface.

  4. Photophysics of size-selected InP nanocrystals: Exciton recombination kinetics

    SciTech Connect

    Kim, S.; Wolters, R.H.; Heath, J.R.

    1996-11-01

    We report here on the size-dependent kinetics of exciton recombination in a III{endash}V quantum dot system, InP. The measurements reported include various frequency dependent quantum yields as a function of temperature, frequency dependent luminescence decay curves, and time-gated emission spectra. This data is fit to a three-state quantum model which has been previously utilized to explain photophysical phenomena in II{endash}VI quantum dots. The initial photoexcitation is assumed to place an electron in a (delocalized) bulk conduction band state. Activation barriers for trapping and detrapping of the electron to surface states, as well as activation barriers for surface-state radiationless relaxation processes are measured as a function of particle size. The energy barrier to detrapping is found to be the major factor limiting room temperature band-edge luminescence. This barrier increases with decreasing particle size. For 30 A particles, this barrier is found to be greater than 6 kJ/mol{emdash}a barrier which is more than an order of magnitude larger than that previously found for 32 A CdS nanocrystals. {copyright} {ital 1996 American Institute of Physics.}

  5. Structural modifications in InP nanostructures prepared by Ar{sup +}-ion irradiation

    SciTech Connect

    Mohanta, S. K.; Soni, R. K.; Gosvami, N. N.; Vajpeyi, A. P.; Tripathy, S.

    2007-10-01

    The evolution of nanopatterned InP surfaces by low-energy Ar{sup +}-ion irradiation and their dependence on incidence angle were investigated by field emission scanning electron microscopy, atomic force microscopy, and Raman scattering. Ordered surface nanodots of high aspect ratio were created. At large ion incidence angle the dot density decreases and the size varies in the range of 65-130 nm with height of around 25-30 nm. Rapid thermal annealing of the patterned surface shows cluster formation at annealing temperatures of 400 deg. C and above, with some micro-cracks at ion incidence angle of 45 deg. C . With increasing ion incidence angle, the optical phonon Raman modes display systematic downward shift and large asymmetric broadening associated with increased contribution of disorder activated LO and TO modes from the patterned surface. The lowering of phonon frequencies, induced by the phonon wave function confinement, signifies the presence of embedded nanocrystallites in the large sized nanodot patterned surface. The surface damage recovery is achieved by rapid thermal annealing of the samples as reflected in the increased optical phonon frequencies and reduced line shape broadening with annealing temperature. For large ion incident angle, the strain relaxation in the irradiated surface region leads to micro-crack formation in the patterned surface and further hardening of the phonon frequencies.

  6. Computer aided recognition of defects in GIS

    SciTech Connect

    Ziomek, W.; Schlemper, H.D.; Feser, K.

    1996-12-31

    A computerized pattern recognition system based on phase resolved partial discharge (PRPD) measurements has been developed. The paper presents results of defect classification obtained for various GIS installations. The system is trained to distinguish between seven basic defect types, such as voids in spacers, moving metallic particles, protrusions on electrodes and floating electrodes. The defect classification is based on 60 parameters extracted from PRPD patterns and utilizes different recognition algorithms. Tests with a database of more than 600 individual measurements gave satisfactory results. Tests with multiple defects and disturbed measurements were done. The database was collected during laboratory experiments and on-site tests of GIS installations.

  7. Reliability test for 500 kV GIS

    SciTech Connect

    Terasaka, K.; Aoyagi, H.; Kamata, I.; Ohyama, S.; Tanaka, M.

    1982-07-01

    This paper describes the reliability tests performed when manufacturing the 500 kV GIS. It contains the results of measuring tests for induced surge to the GIS low-voltage control circuit and measuring tests for induced current to the GIS external grounding structure. The paper proposes the methods for suppressing the induced surge and for setting the induced current circuit.

  8. 19.2% Efficient InP Heterojunction Solar Cell with Electron-Selective TiO2 Contact

    SciTech Connect

    Yin, Xingtian; Battaglia, Corsin; Lin, Yongjing; Chen, Kevin; Hettick, Mark; Zheng, Maxwell; Chen, Cheng-Ying; Kiriya, Daisuke; Javey, Ali

    2014-09-25

    We demonstrate an InP heterojunction solar cell employing an ultrathin layer (~10 nm) of amorphous TiO2 deposited at 120°C by atomic layer deposition as the transparent electron-selective contact. The TiO2 film selectively extracts minority electrons from the conduction band of p-type InP while blocking the majority holes due to the large valence band offset, enabling a high maximum open-circuit voltage of 785 mV. Lastly, a hydrogen plasma treatment of the InP surface drastically improves the long-wavelength response of the device, resulting in a high short-circuit current density of 30.5 mA/cm2 and a high power conversion efficiency of 19.2%.

  9. CyberGIS software: a synthetic review and integration roadmap

    SciTech Connect

    Wang, Shaowen; Anselin, Luc; Bhaduri, Budhendra L; Cosby, Christopher; Goodchild, Michael; Liu, Yan; Nygers, Timothy L.

    2013-01-01

    CyberGIS defined as cyberinfrastructure-based geographic information systems (GIS) has emerged as a new generation of GIS representing an important research direction for both cyberinfrastructure and geographic information science. This study introduces a 5-year effort funded by the US National Science Foundation to advance the science and applications of CyberGIS, particularly for enabling the analysis of big spatial data, computationally intensive spatial analysis and modeling (SAM), and collaborative geospatial problem-solving and decision-making, simultaneously conducted by a large number of users. Several fundamental research questions are raised and addressed while a set of CyberGIS challenges and opportunities are identified from scientific perspectives. The study reviews several key CyberGIS software tools that are used to elucidate a vision and roadmap for CyberGIS software research. The roadmap focuses on software integration and synthesis of cyberinfrastructure, GIS, and SAM by defining several key integration dimensions and strategies. CyberGIS, based on this holistic integration roadmap, exhibits the following key characteristics: high-performance and scalable, open and distributed, collaborative, service-oriented, user-centric, and community-driven. As a major result of the roadmap, two key CyberGIS modalities gateway and toolkit combined with a community-driven and participatory approach have laid a solid foundation to achieve scientific breakthroughs across many geospatial communities that would be otherwise impossible.

  10. Recommendation 225: Recommendation on DOE Oak Ridge GIS Fact Sheets |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy 5: Recommendation on DOE Oak Ridge GIS Fact Sheets Recommendation 225: Recommendation on DOE Oak Ridge GIS Fact Sheets Not all fact sheets that can be accessed on the DOE GIS include descriptions of future decisions or actions on cleanup areas. ORSSAB recommends that all fact sheets identify future actions expected or planned. Recommendation225.pdf (148.18 KB) Responseto225.pdf (238.07 KB) More Documents & Publications Recommendation 224: Recommendations on the FY

  11. Solar: monthly and annual average direct normal (DNI) GIS data...

    OpenEI (Open Energy Information) [EERE & EIA]

    Download Carribean Islands Central America DNI GIS Mexico NREL GEF SWERA UNEP atmospheric water v... solar Additional Info Field Value Source www.nrel.gov Author National Renewable...

  12. NREL GIS Data: Bhutan High Resolution Wind Resource - Datasets...

    OpenEI (Open Energy Information) [EERE & EIA]

    NREL GIS Data: Bhutan High Resolution Wind Resource This shapefile containing 50 meter height data has been validated by NREL and wind energy meteorological consultants. However,...

  13. The Role of GIS in Decision Support Systems

    Office of Environmental Management (EM)

    GIS in Decision Support Systems Jeremy Smith Weather Camera Rail Bridge T k Mile Post Traffic Truck Origin Destination Route Alternatives Roadway Time Pavement Incidents Closures ...

  14. Web Mapping and Online GIS Applications for Renewable Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    for Renewable Energy Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Web Mapping and Online GIS Applications for Renewable Energy AgencyCompany Organization:...

  15. Investigation on phenomena caused by insulation abnormalities in actual GIS

    SciTech Connect

    Hasegawa, Y. ); Izumi, K. ); Kobayashi, A.; Wakabayashi, S.; Murase, H.; Akazaki, M.; Menju, S. )

    1994-04-01

    Because of its compactness, high efficiency, and ease of maintenance and inspection, gas-insulated switchgear (GIS) has recently been finding very wide applications. such an excellent GIS, however, still has drawbacks. It has an enclosed structure, making it very difficult to detect internal faults. Should a fault arise in a GIS unit, it takes a long time to locate and remove it. This paper deals with the results of various insulation fault simulation tests with a 300kV GIS installed in the field. It covers the levels and patterns of partial discharges generated by various faults and levels to be detected in the field.

  16. Targeting commercial and industrial customers with GIS

    SciTech Connect

    Camp, W.A.

    1994-11-01

    Unlike siting new retail stores, utility companies face unique barriers to expanding their markets. Other than by merger and acquisition, utility companies can only expand into new markets by adding new transmission and/or pipelines to existing facilities. This situation lends itself to the use of corridor target marketing along the leading edge of existing markets to determine the best potential for expansion. This paper will detail how the Tennessee Valley Authority (TVA) utilized TARGETMASTER, a customized geographic information system (GIS), to locate and assess the potential to directly serve electrical power to commercial and industrial customers along a corridor.

  17. Transient impedance of GIS grounding grid

    SciTech Connect

    Karaki, S.; Yamazaki, T.; Nojima, K.; Yokota, T.; Murase, H.; Takahashi, H.; Kojima, S.

    1995-04-01

    The transient impedance of a grounding grid for a commercial 550kV GIS was measured on site using steep front currents with rise time from 100ns to 2{mu}s. From the measured results, it was found that the transient impedance of the measured grid for those currents is simulated by a series circuit with an inductance 1{mu}H and a resistance 3{Omega}. Applying the obtained impedance to the lighting surge analysis, it is pointed out that the grounding condition at an arrester tank end has a remarkable influence on the protecting performance of a surge arrester.

  18. The Role of GIS in Decision Support Systems | Department of Energy

    Office of Environmental Management (EM)

    The Role of GIS in Decision Support Systems The Role of GIS in Decision Support Systems The Role of GIS in Decision Support Systems (2.01 MB) More Documents & Publications ...

  19. Growth mode and strain relaxation of InAs on InP (111)A grown by molecular beam epitaxy

    SciTech Connect

    Li, H.; Daniels-Race, T.; Wang, Z.

    1999-03-01

    Growth mode and strain relaxation of molecular-beam-epitaxy grown InAs/InAlAs/InP (111)A system have been investigated using reflection high-energy electron diffraction, transmission electron microscopy, atomic force microscopy, and photoluminescence measurements. In direct contrast to the well-studied InAs/GaAs system, our experimental results show that the InAs grown on InAlAs/InP (111)A follows the Stranski{endash}Krastanov mode. Both self-organized InAs quantum dots and relaxed InAs islands are formed depending on the InAs coverage. Intense luminescence signals from both the InAs quantum dots and wetting layer are observed. The luminescence efficiency of (111)A samples is comparable to that of (001) samples, suggesting the feasibility of fabricating quantum dot optoelectronic devices on InP (111)A surfaces. {copyright} {ital 1999 American Institute of Physics.}

  20. In situ study of HfO{sub 2} atomic layer deposition on InP(100)

    SciTech Connect

    Dong, H.; Brennan, B.; Kim, J.; Hinkle, C. L.; Wallace, R. M.; Zhernokletov, D.

    2013-04-29

    The interfacial chemistry of the native oxide and chemically treated InP samples during atomic layer deposition (ALD) HfO{sub 2} growth at 250 Degree-Sign C has been studied by in situ X-ray photoelectron spectroscopy. The In-oxide concentration is seen to gradually decrease on the native oxide and acid etched samples. No significant changes of the P-oxide concentrations are detected, while the P-oxides chemical states are seen to change gradually during the initial cycles of ALD on the native oxide and the chemically treated samples. (NH{sub 4}){sub 2}S treatment strongly decreases In-oxide and P-oxide concentrations prior to ALD and maintains low concentrations during the ALD process.

  1. In situ study of e-beam Al and Hf metal deposition on native oxide InP (100)

    SciTech Connect

    Dong, H.; KC, Santosh; Azcatl, A.; Cabrera, W.; Qin, X.; Brennan, B.; Cho, K.; Wallace, R. M.; Zhernokletov, D.

    2013-11-28

    The interfacial chemistry of thin Al (∼3 nm) and Hf (∼2 nm) metal films deposited by electron beam (e-beam) evaporation on native oxide InP (100) samples at room temperature and after annealing has been studied by in situ angle resolved X-ray photoelectron spectroscopy and low energy ion scattering spectroscopy. The In-oxides are completely scavenged forming In-In/In-(Al/Hf) bonding after Al and Hf metal deposition. The P-oxide concentration is significantly decreased, and the P-oxide chemical states have been changed to more P-rich oxides upon metal deposition. Indium diffusion through these metals before and after annealing at 250 °C has also been characterized. First principles calculation shows that In has lower surface formation energy compared with Al and Hf metals, which is consistent with the observed indium diffusion behavior.

  2. Inter-dot strain field effect on the optoelectronic properties of realistic InP lateral quantum-dot molecules

    SciTech Connect

    Barettin, Daniele Auf der Maur, Matthias; De Angelis, Roberta; Prosposito, Paolo; Casalboni, Mauro; Pecchia, Alessandro

    2015-03-07

    We report on numerical simulations of InP surface lateral quantum-dot molecules on In{sub 0.48}Ga{sub 0.52 }P buffer, using a model strictly derived by experimental results by extrapolation of the molecules shape from atomic force microscopy images. Our study has been inspired by the comparison of a photoluminescence spectrum of a high-density InP surface quantum dot sample with a numerical ensemble average given by a weighted sum of simulated single quantum-dot spectra. A lack of experimental optical response from the smaller dots of the sample is found to be due to strong inter-dot strain fields, which influence the optoelectronic properties of lateral quantum-dot molecules. Continuum electromechanical, k{sup →}·p{sup →} bandstructure, and optical calculations are presented for two different molecules, the first composed of two dots of nearly identical dimensions (homonuclear), the second of two dots with rather different sizes (heteronuclear). We show that in the homonuclear molecule the hydrostatic strain raises a potential barrier for the electrons in the connection zone between the dots, while conversely the holes do not experience any barrier, which considerably increases the coupling. Results for the heteronuclear molecule show instead that its dots do not appear as two separate and distinguishable structures, but as a single large dot, and no optical emission is observed in the range of higher energies where the smaller dot is supposed to emit. We believe that in samples of such a high density the smaller dots result as practically incorporated into bigger molecular structures, an effect strongly enforced by the inter-dot strain fields, and consequently it is not possible to experimentally obtain a separate optical emission from the smaller dots.

  3. Ab initio calculations of polarization, piezoelectric constants, and elastic constants of InAs and InP in the wurtzite phase

    SciTech Connect

    Hajlaoui, C. Pedesseau, L.; Raouafi, F.; Ben Cheikh Larbi, F.; Even, J.; Jancu, J.-M.

    2015-08-15

    We report first-principle density functional calculations of the spontaneous polarization, piezoelectric stress constants, and elastic constants for the III–V wurtzite structure semiconductors InAs and InP. Using the density functional theory implemented in the VASP code, we obtain polarization values–0.011 and–0.013 C/m{sup 2}, and piezoelectric constants e{sub 33} (e{sub 31}) equal to 0.091 (–0.026) and 0.012 (–0.081) C/m{sup 2} for structurally relaxed InP and InAs respectively. These values are consistently smaller than those of nitrides. Therefore, we predict a smaller built-in electric field in such structures.

  4. Detection of lateral composition modulation in a (InAs){sub n}/(GaAs){sub n} short period superlattice on InP by magnetoexciton spectroscopy

    SciTech Connect

    Jones, E.D.; Mirecki-Millunchick, J.; Follstaedt, D.; Hafich, M.; Lee, S.; Reno, J.; Twesten, R.; Zhang, Y.; Mascarenhas, A.

    1997-03-01

    An experimental signature for detecting spontaneous lateral composition modulation in a (InAs){sub n}/(GaAs){sub n} short period superlattice on a InP substrate based on magnetoexciton spectroscopy is presented. The authors find by aligning the magnetic field in three crystallographic directions, one parallel to and the other two perpendicular to the composition modulation direction, that the magnetoexciton shifts are anisotropic and are a good indicator for the presence of composition modulation.

  5. Investigation of InP etching mechanisms in a Cl{sub 2}/H{sub 2} inductively coupled plasma by optical emission spectroscopy

    SciTech Connect

    Gatilova, L.; Bouchoule, S.; Guilet, S.; Chabert, P.

    2009-03-15

    Optical emission spectroscopy (OES) has been used in order to investigate the InP etching mechanisms in a Cl{sub 2}-H{sub 2} inductively coupled plasma. The authors have previously shown that anisotropic etching of InP could be achieved for a H{sub 2} percentage in the 35%-45% range where the InP etch rate also presents a local maximum [J. Vac. Sci. Technol. B 24, 2381 (2006)], and that anisotropic etching was due to an enhanced passivation of the etched sidewalls by a silicon oxide layer [J. Vac. Sci. Technol. B 26, 666 (2008)]. In this work, it is shown that this etching behavior is related to a maximum in the H atom concentration in the plasma. The possible enhancement of the sidewall passivation process in the presence of H is investigated by comparing OES measurements and etching results obtained for Cl{sub 2}-H{sub 2} and Cl{sub 2}-Ar gas mixtures.

  6. eGIS Portal PIA, Bonneville Power Administration | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    eGIS Portal PIA, Bonneville Power Administration eGIS Portal PIA, Bonneville Power Administration eGIS Portal PIA, Bonneville Power Administration eGIS Portal PIA, Bonneville Power Administration (395.19 KB) More Documents & Publications PIA - Bonneville Power Adminstration Ethics Helpline Integrated Safety Management Workshop Registration, PIA, Idaho National Laboratory Occupational Medicine - Assistant

  7. An Approach to Integrate a Space-Time GIS Data Model with High Performance Computers

    SciTech Connect

    Wang, Dali; Zhao, Ziliang; Shaw, Shih-Lung

    2011-01-01

    In this paper, we describe an approach to integrate a Space-Time GIS data model on a high performance computing platform. The Space-Time GIS data model has been developed on a desktop computing environment. We use the Space-Time GIS data model to generate GIS module, which organizes a series of remote sensing data. We are in the process of porting the GIS module into an HPC environment, in which the GIS modules handle large dataset directly via parallel file system. Although it is an ongoing project, authors hope this effort can inspire further discussions on the integration of GIS on high performance computing platforms.

  8. Tidal Stream Power Web GIS Tool | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    are generated by interpolating the model results from computational grids onto an ArcGIS raster grid with 0.003 resolution and are useful for a quick visual examination.1...

  9. West Flank Coso FORGE: ArcGIS data

    SciTech Connect

    Doug Blankenship

    2015-12-21

    Geologic ArcGIS data of West Flank Coso, Ca FORGE site from a unpublished map by Rich Whitmarsh. The zip file includes a DEM, hillshade and four shapefiles of the general outlines of FORGE area.

  10. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Geospatial Team

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Geospatial Data Science Team The following are members of NREL's Geospatial Data Science Team: Jon Duckworth Michael Gleason Nick Grue Pamela Gray-Hann Donna Heimiller Dylan Hettinger Ted Kwasnik Anthony Lopez Galen Maclaurin Meghan Mooney Ricardo Oliveira Billy J. Roberts If you have questions about our programs or would like to contact our staff, please contact us through the Geospatial Data Science Team email. Printable Version NREL GIS Home About NREL GIS Renewable Energy Technical Potential

  11. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Webmaster

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Contact the Geospatial Data Science Team To contact the Geospatial Data Science Team, please provide your name, email address, and message below. When you are finished, click "Send Message." NOTE: If you enter your email address incorrectly, we will be unable to reply. Your name: Your email address: Your message: Send Message Printable Version NREL GIS Home About NREL GIS Renewable Energy Technical Potential Renewable Energy Economic Potential Maps Data Resources Data Visualization

  12. Next Generation (NextGen) Geospatial Information System (GIS) | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy Next Generation (NextGen) Geospatial Information System (GIS) Next Generation (NextGen) Geospatial Information System (GIS) July 12, 2013 - 12:17pm Addthis The U.S. Department of Energy Office of Legacy Management (LM) manages environmental records from Cold War legacy sites spanning nearly 40 years. These records are a key LM asset and must be managed and maintained efficiently and effectively. There are over 16 different applications that support the databases containing

  13. NREL: Dynamic Maps, GIS Data, and Analysis Tools Home Page

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The Dynamic Maps, Geographic Information System (GIS) Data and Analysis Tools website provides maps, data and tools for renewable energy resources that determine which energy technologies are viable solutions in domestic and international regions. MapSearch - While this site contains detailed information and quality data, if you want to search for the latest and most up-to-date maps created by NREL, please visit our MapSearch: http://www.nrel.gov/gis/mapsearch/ Renewable Energy Technical

  14. Regional Geology: GIS Database for Alternative Host Rocks and Potential

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Siting Guidelines | Department of Energy Regional Geology: GIS Database for Alternative Host Rocks and Potential Siting Guidelines Regional Geology: GIS Database for Alternative Host Rocks and Potential Siting Guidelines The objective of this work is to develop a spatial database that integrates both geologic data for alternative host-rock formations and information that has been historically used for siting guidelines, both in the US and other countries. The Used Fuel Disposition Campaign

  15. Effect of matrix on InAs self-organized quantum dots on InP substrate

    SciTech Connect

    Ustinov, V.M.; Weber, E.R.; Ruvimov, S.; Liliental-Weber, Z.; Zhukov, A.E.; Egorov, A.Y.; Kovsh, A.R.; Tsatsulnikov, A.F.; Kopev, P.S.

    1998-01-01

    InAs self-organized quantum dots in In{sub 0.53}Ga{sub 0.47}As and In{sub 0.52}Al{sub 0.48}As matrices have been grown on InP substrates by molecular beam epitaxy. The dot size in InGaAs has been found to be 3{endash}4 times larger, but the areal density about an order of magnitude smaller than that in InAlAs. Low-temperature photoluminescence (PL) of the InAs/InGaAs quantum dots is characterized by a narrow (35 meV) PL line as compared to that of InAs/InAlAs quantum dots (170 meV). Quantum dot formation increases the carrier localization energy as compared to quantum well structures with the same InAs thickness in a similar manner for both InAs/InGaAs and InAs/InAlAs structures. The effect of the barrier band gap on the optical transition energy is qualitatively the same for quantum well and quantum dot structures. The results demonstrate a possibility of controlling the quantum dot emission wavelength by varying the matrix composition. {copyright} {ital 1998 American Institute of Physics.}

  16. GSG-GIS development program plan

    SciTech Connect

    Lee, R.C.

    1992-10-15

    For the past 40 years, the Savannah River Site (SRS) has been subjected to numerous geological and geotechnical investigations in support of facility construction and waste site development and remediation. Over this period,.a variety of different subcontractors have collected large quantities of geoscience data. In addition, current programs involve numerous investigators from different departments, and consequently, earth science data and interpretations are scattered among the departments, investigators, and subcontractors at SRS. As a result, scientific and management decisions cannot take advantage of the significant body of information that exists at SRS. Recent DOE Orders (Systematic Evaluation Program, 1991) have put specific requirements on their contractors to compile geological databases to coordinate DOE site data gathering and interpretations, and to assist in compiling safety analysis reports. The Earth Science Advisory Committee and the Environmental Advisory Committee have also made specific recommendations on the management of SRS geoscience data. This plan describes a management system to identify, communicate, and compile SRS geological (including geohydrologic), seismological, and geotechnical (656) data and interpretations on a Geographic Information System (GIS).

  17. Evaluating the Potential of Commercial GIS for Accelerator Configuration Management

    SciTech Connect

    T.L. Larrieu; Y.R. Roblin; K. White; R. Slominski

    2005-10-10

    The Geographic Information System (GIS) is a tool used by industries needing to track information about spatially distributed assets. A water utility, for example, must know not only the precise location of each pipe and pump, but also the respective pressure rating and flow rate of each. In many ways, an accelerator such as CEBAF (Continuous Electron Beam Accelerator Facility) can be viewed as an ''electron utility''. Whereas the water utility uses pipes and pumps, the ''electron utility'' uses magnets and RF cavities. At Jefferson lab we are exploring the possibility of implementing ESRI's ArcGIS as the framework for building an all-encompassing accelerator configuration database that integrates location, configuration, maintenance, and connectivity details of all hardware and software. The possibilities of doing so are intriguing. From the GIS, software such as the model server could always extract the most-up-to-date layout information maintained by the Survey & Alignment for lattice modeling. The Mechanical Engineering department could use ArcGIS tools to generate CAD drawings of machine segments from the same database. Ultimately, the greatest benefit of the GIS implementation could be to liberate operators and engineers from the limitations of the current system-by-system view of machine configuration and allow a more integrated regional approach. The commercial GIS package provides a rich set of tools for database-connectivity, versioning, distributed editing, importing and exporting, and graphical analysis and querying, and therefore obviates the need for much custom development. However, formidable challenges to implementation exist and these challenges are not only technical and manpower issues, but also organizational ones. The GIS approach would crosscut organizational boundaries and require departments, which heretofore have had free reign to manage their own data, to cede some control and agree to a centralized framework.

  18. MgSe/ZnSe/CdSe coupled quantum wells grown on InP substrate with intersubband absorption covering 1.55??m

    SciTech Connect

    Chen, Guopeng; Shen, Aidong; De Jesus, Joel; Tamargo, Maria C.

    2014-12-08

    The authors report the observation of intersubband (ISB) transitions in the optical communication wavelength region in MgSe/ZnSe/CdSe coupled quantum wells (QWs). The coupled QWs were grown on InP substrates by molecular beam epitaxy. By inserting ZnSe layers to compensate the strain, samples with high structural quality were obtained, as indicated by well resolved satellite peaks in high-resolution x-ray diffraction. The observed ISB transition energies agree well with the calculated values.

  19. Digital data collection for powerline GIS and engineering applications

    SciTech Connect

    Maynard, K.L.; Lynch O.

    1996-08-01

    This paper discusses a single process of gathering data that allows a utility geographic information system (GIS) to meet the needs of both the GIS and Engineering departments. An integrated system for airborne laser imaging and data collection is described which uses a real-time, kinematic global positioning system and a high repetition laser rangefinder. The system provides over 99% valid range detection and a data processing to data collection ratio of about four to one. A next-day GIS, of sufficient quality to meet engineering needs, is provided by the system. The system also meets automated mapping and facility management facility and substation mapping needs with very accurate and highly detailed data. 3 figs.

  20. Development of a GIS Based Dust Dispersion Modeling System.

    SciTech Connect

    Rutz, Frederick C.; Hoopes, Bonnie L.; Crandall, Duard W.; Allwine, K Jerry

    2004-08-12

    With residential areas moving closer to military training sites, the effects upon the environment and neighboring civilians due to dust generated by training exercises has become a growing concern. Under a project supported by the Strategic Environmental Research and Development Program (SERDP) of the Department of Defense, a custom application named DUSTRAN is currently under development that integrates a system of EPA atmospheric dispersion models with the ArcGIS application environment in order to simulate the dust dispersion generated by a planned training maneuver. This integration between modeling system and GIS application allows for the use of real world geospatial data such as terrain, land-use, and domain size as input by the modeling system. Output generated by the modeling system, such as concentration and deposition plumes, can then be displayed upon accurate maps representing the training site. This paper discusses the development of this integration between modeling system and Arc GIS application.

  1. Using GIS to Identify Remediation Areas in Landfills

    SciTech Connect

    Linda A.Tedrow

    2004-08-01

    This paper reports the use of GIS mapping software—ArcMap and ArcInfo Workstation—by the Idaho National Engineering and Environmental Laboratory (INEEL) as a non-intrusive method of locating and characterizing radioactive waste in a 97-acre landfill to aid in planning cleanup efforts. The fine-scale techniques and methods used offer potential application for other burial sites for which hazards indicate a non-intrusive approach. By converting many boxes of paper shipping records in multiple formats into a relational database linked to spatial data, the INEEL has related the paper history to our current GIS technologies and spatial data layers. The wide breadth of GIS techniques and tools quickly display areas in need of remediation as well as evaluate methods of remediation for specific areas as the site characterization is better understood and early assumptions are refined.

  2. In situ study of the role of substrate temperature during atomic layer deposition of HfO{sub 2} on InP

    SciTech Connect

    Dong, H.; Santosh, K.C.; Qin, X.; Brennan, B.; McDonnell, S.; Kim, J.; Zhernokletov, D.; Hinkle, C. L.; Cho, K.; Wallace, R. M.; Department of Physics, University of Texas at Dallas, Richardson, Texas 75080

    2013-10-21

    The dependence of the “self cleaning” effect of the substrate oxides on substrate temperature during atomic layer deposition (ALD) of HfO{sub 2} on various chemically treated and native oxide InP (100) substrates is investigated using in situ X-ray photoelectron spectroscopy. The removal of In-oxide is found to be more efficient at higher ALD temperatures. The P oxidation states on native oxide and acid etched samples are seen to change, with the total P-oxide concentration remaining constant, after 10 cycles of ALD HfO{sub 2} at different temperatures. An (NH{sub 4}){sub 2} S treatment is seen to effectively remove native oxides and passivate the InP surfaces independent of substrate temperature studied (200 °C, 250 °C and 300 °C) before and after the ALD process. Density functional theory modeling provides insight into the mechanism of the changes in the P-oxide chemical states.

  3. Web Mapping and Online GIS Applications for Renewable Energy

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation at the May 26, 2010, TAP Webinar presented by the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Weatherization and Intergovernmental Program Technical Assistance Project for state and local officials by National Renewable Energy Laboratory GIS Applications Developers Ted Quinby and Dan Getman.

  4. Fallon FORGE GIS and Downhole Well Lithology Data

    SciTech Connect

    Doug Blankenship

    2015-12-23

    ArcGIS Map Package with MT Station Locations, 2D Seismic Lines, Well data, Known Regional Hydrothermal Systems, Regional Historic Earthquake Seismicity, Regional Temperature Gradient Data, Regional Heat Flow Data, Regional Radiogenic Heat Production, Local Geology, Land Status, Cultural Data, 2m Temperature Probe Data, and Gravity Data. Also a detailed down-hole lithology notes are provided.

  5. Application of GIS in siting of linear facilities

    SciTech Connect

    Gallagher, G.A. III; Heatwole, D.W.; Schmidt, J.A. )

    1993-01-01

    Geographic information systems (GIS) are powerful tools in the analysis and selection of environmentally acceptable corridors for linear facilities, such as roads and utility lines. GIS can serve several functions in corridor siting, including managing and manipulating extensive environmental databases, weighting and compositing data layers to enable spatial analysis for a path of least resistance,'' summarizing statistics for a comparison of alternative corridors, preparing color graphics for presentations and reports, and providing a record of alternative analysis for permitting reviews and legal challenges. In this paper, the authors examine the benefits and limitations of using GIS to site linear facilities, based mainly on their experience in siting a 600-mile natural gas pipeline in Florida. They implemented a phased analytical approach to define acceptable corridors several miles in width and then selected viable routes within the corridors using a magnified scale. This approach resulted in a dynamic siting process which required numerous iterations of analysis. Consequently, their experience has instilled the benefits derived by expending preliminary effort to create macros of the GIS analytical process so that subsequent effort is minimized during numerous iterations of corridor and route refinement.

  6. Lower granite GIS data description and collection guidelines

    SciTech Connect

    Gordon, J.L.; Evans, B.J.; Perry, E.M.

    1995-12-01

    The Lower Granite Geographic Information System (GIS) was developed jointly by the US Army Corps of Engineers (USCOE) Walla Walla District and the Pacific Northwest Laboratory (PNL). The goal of the project is to use GIS technology to analyze impacts of the drawdown mitigation option on the physical and biological environment of the Lower Granite Reservoir. The drawdown mitigation option is based on the hypothesis that faster juvenile salmon travel to the ocean would result in higher juvenile survival and greater smolt-to-adult return ratios; to accomplish this, reservoir elevations would be lowered to increase channel velocities. Altering the elevation of the reservoirs on the Snake River is expected to have a variety of impacts to the Physical environment including changes to water velocity, temperature, dissolved gases, and turbidity. The GIS was developed to evaluate these changes and the resulting impacts on the anadromous and resident fish of the Snake River, as well as other aquatic organisms and terrestrial wildlife residing in the adjacent riparian areas. The Lower Granite GIS was developed using commercial hardware and software and is supported by a commercial relational database. Much of the initial system development involved collecting and incorporating data describing the river channel characteristics, hydrologic properties, and aquatic ecology. Potentially meaningful data for the Lower Granite GIS were identified and an extensive data search was performed. Data were obtained from scientists who are analyzing the habitats, limnology, and hydrology of the Snake River. The next six sections of this document describe the bathymetry, fish abundance, substrate, sediment chemistry, and channel hydrology data.

  7. Low density of self-assembled InAs quantum dots grown by solid-source molecular beam epitaxy on InP(001)

    SciTech Connect

    Dupuy, E.; Regreny, P.; Robach, Y.; Gendry, M.; Chauvin, N.; Tranvouez, E.; Bremond, G.; Bru-Chevallier, C.; Patriarche, G.

    2006-09-18

    The authors report on a postgrowth method to obtain low density InAs/InP(001) quantum dots by solid-source molecular beam epitaxy. They used an approach based on the ripening of the InAs sticks, which is triggered by the sample cooling under arsenic overpressure, before InP capping. Atomic force microscopy images show the evolution of InAs islands from sticks oriented along the [1-10] direction to dot-shaped islands with a density that can be reduced to about 2x10{sup 9} dots/cm{sup 2}. Macro- and microphotoluminescence reveal that these diluted InAs dots exhibit a strong spatial confinement and emit in the 1.55 {mu}m range.

  8. VolmerWeber InAs quantum dot formation on InP (113)B substrates under the surfactant effect of Sb

    SciTech Connect

    Zhao, Yu Bertru, Nicolas; Folliot, Herv; Rohel, Tony; Mauger, Samuel J. C.; Koenraad, Paul M.

    2014-07-21

    We report on Sb surfactant growth of InAs nanostructures on GaAs{sub 0.51}Sb{sub 0.49} layers deposited on InP (001) and on (113)B oriented substrates. On the (001) orientation, the presence of Sb significantly favors the two-dimensional growth regime. Even after the deposition of 5 mono-layers of InAs, the epitaxial film remains flat and InAs/GaAs{sub 0.51}Sb{sub 0.49} type-II quantum wells are achieved. On (113)B substrates, same growth runs resulted in formation of high density InAs islands. Microscopic studies show that wetting layer is missing on (113)B substrates, and thus, a Volmer-Weber growth mode is concluded. These different behaviors are attributed to the surface energy changes induced by Sb atoms on surface.

  9. Photovoltaic conversion of visible spectrum by GaP capped InP quantum dots grown on Si (100) by metalorganic chemical vapor deposition

    SciTech Connect

    Halder, Nripendra N.; Biswas, Pranab; Banerji, P. Nagabhushan, B.; Sarkar, Krishnendu; Chowdhury, Sisir; Chaudhuri, Arunava; Kundu, Souvik

    2015-01-05

    Growth of GaP capped strained InP quantum dots was carried out by metal organic chemical vapor deposition technique on Si (100) substrates to explore an alternative material system for photovoltaic conversion. Studies on reflectance spectroscopy show higher absorption of visible photons compared to scattering. Smooth and defect free interface provides low dark current with high rectification ratio. A solar cell made of five periods of quantum dots is found to provide a conversion efficiency of 4.18% with an open circuit voltage and short circuit current density of 0.52 V and 13.64 mA/cm{sup 2}, respectively, under AM 1.5 solar radiation.

  10. GIS applications to evaluate public health effects of global warming

    SciTech Connect

    Regens, J.L.; Hodges, D.G.

    1996-12-31

    Modeling projections of future climatic conditions suggest changes in temperature and precipitation patterns that might induce direct adverse effects on human health by altering the extent and severity of infectious and vector-borne diseases. The incidence of mosquito-borne diseases, for example, could increase substantially in areas where temperature and relative humidity rise. The application of Geographic Information Systems (GIS) offers new methodologies to evaluate the impact of global warming on changes in the incidence of infectious and vector-borne diseases. This research illustrates the potential analytical and communication uses of GIS for monitoring historical patterns of climate and human health variables and for projecting changes in these health variables with global warming.

  11. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Biomass Maps

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Biomass Maps These maps illustrate the biomass resources generated in the United States by county. Biomass feedstock data are analyzed both statistically and graphically using a geographic information system (GIS). The following feedstock categories are evaluated: crop residues, forest residues, primary and secondary mill residues, urban wood waste, and methane emissions from animal manure, landfills, wastewater treatment, and industrial, institutional, and commercial organic waste (e.g. food

  12. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Renewable Energy

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Technical Potential Technical Potential Figure 1: Defining 'Potential' Image of a triangle divided into sections called Market, Economic, Technical, and Resource that include the key assumptions for each section on a bullet list beside it. Enlarge image Renewable energy technical potential as defined in this report: U.S. Renewable Energy Technical Potentials: A GIS-Based Analysis (PDF 2.7 MB) represents the achievable energy generation of a particular technology given system performance,

  13. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Wind Maps

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Additional Resources Wind Prospector A web-based GIS applications designed to support resource assessment and data exploration associated with wind development. Wind Maps NREL's Geospatial Data Science Team offers both a national wind resource assessment of the United States and high-resolution wind data. The national wind resource assessment was created for the U.S. Department of Energy in 1986 by the Pacific Northwest Laboratory and is documented in the Wind Energy Resource Atlas of the United

  14. Prediction of the visual impact of motorways using GIS

    SciTech Connect

    Jiang, Like; Kang, Jian; Schroth, Olaf

    2015-11-15

    Large scale transportation projects can adversely affect the visual perception of environmental quality and require adequate visual impact assessment. In this study, we investigated the effects of the characteristics of the road project and the character of the existing landscape on the perceived visual impact of motorways, and developed a GIS-based prediction model based on the findings. An online survey using computer-visualised scenes of different motorway and landscape scenarios was carried out to obtain perception-based judgements on the visual impact. Motorway scenarios simulated included the baseline scenario without road, original motorway, motorways with timber noise barriers, transparent noise barriers and tree screen; different landscape scenarios were created by changing land cover of buildings and trees in three distance zones. The landscape content of each scene was measured in GIS. The result shows that presence of a motorway especially with the timber barrier significantly decreases the visual quality of the view. The resulted visual impact tends to be lower where it is less visually pleasant with more buildings in the view, and can be slightly reduced by the visual absorption effect of the scattered trees between the motorway and the viewpoint. Based on the survey result, eleven predictors were identified for the visual impact prediction model which was applied in GIS to generate maps of visual impact of motorways in different scenarios. The proposed prediction model can be used to achieve efficient and reliable assessment of visual impact of motorways. - Highlights: • Motorways induce significant visual impact especially with timber noise barriers. • Visual impact is negatively correlated with amount of buildings in the view. • Visual impact is positively correlated with percentage of trees in the view. • Perception-based motorway visual impact prediction model using mapped predictors • Predicted visual impacts in different scenarios are

  15. DEVELOPMENT OF A CARBON MANAGEMENT GEOGRAPHIC INFORMATION SYSTEM (GIS) FOR THE UNITED STATES

    SciTech Connect

    Howard J. Herzog

    2004-03-01

    The Lab for Energy and Environment (LFEE) at MIT is developing a Geographic Information System (GIS) for carbon management. The GIS will store, integrate, and manipulate information relating to the components of carbon management systems. Additionally, the GIS can be used to interpret and analyze the effect of developing these systems. In the first year of this three year project, we focused on two tasks: (1) specifying the system design--defining in detail the GIS data requirements, the types of analyses that can be conducted, and the forms of output we will produce, as well as designing the computer architecture of the GIS and (2) creating the ''core'' datasets--identifying data sources and converting them into a form accessible by the GIS.

  16. JeoViewer: Object-Oriented GIS Framework | Argonne National Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    JeoViewer: Object-Oriented GIS Framework JeoViewer: Object-Oriented GIS Framework JeoViewer is an intelligent, object-oriented geographical information system (GIS) framework written in Java. It can provide links to any object's data and behaviors, and is optimized for spatial geometry representation. Unlike traditional "static" GIS systems, JeoViewer is dynamic and can be dynamically linked to objects, models and other live data streams. JeoViewer's object-oriented approach provides a

  17. Development of insulation structure and enhancement of insulation reliability of 500 kV dc GIS

    SciTech Connect

    Hasegawa, T.; Yamaji, K.; Hatano, M.; Endo, F.; Rokunohe, T.; Yamagiwa, T.

    1997-01-01

    The paper describes the development of insulation structure and enhancement of insulation reliability of 500 kV dc GIS. Considering problems of metallic particles and charge accumulation on spacers, the developed insulation structure of GIS consisted of three regions, i.e., the spacer, particle scavenging and non-levitating regions. Particles could be efficiently scavenged, and the developed GIS withstood all insulation specifications with sufficient margins under the clean and particle-contaminated conditions. Now, a long-term site test for one year of the 500 kV dc GIS has been continued since October 1995.

  18. Effect of Cl{sub 2}- and HBr-based inductively coupled plasma etching on InP surface composition analyzed using in situ x-ray photoelectron spectroscopy

    SciTech Connect

    Bouchoule, S.; Vallier, L.; Patriarche, G.; Chevolleau, T.; Cardinaud, C.

    2012-05-15

    A Cl{sub 2}-HBr-O{sub 2}/Ar inductively coupled plasma (ICP) etching process has been adapted for the processing of InP-based heterostructures in a 300-mm diameter CMOS etching tool. Smooth and anisotropic InP etching is obtained at moderate etch rate ({approx}600 nm/min). Ex situ x-ray energy dispersive analysis of the etched sidewalls shows that the etching anisotropy is obtained through a SiO{sub x} passivation mechanism. The stoichiometry of the etched surface is analyzed in situ using angle-resolved x-ray photoelectron spectroscopy. It is observed that Cl{sub 2}-based ICP etching results in a significantly P-rich surface. The phosphorous layer identified on the top surface is estimated to be {approx}1-1.3-nm thick. On the other hand InP etching in HBr/Ar plasma results in a more stoichiometric surface. In contrast to the etched sidewalls, the etched surface is free from oxides with negligible traces of silicon. Exposure to ambient air of the samples submitted to Cl{sub 2}-based chemistry results in the complete oxidation of the P-rich top layer. It is concluded that a post-etch treatment or a pure HBr plasma step may be necessary after Cl{sub 2}-based ICP etching for the recovery of the InP material.

  19. NREL: Dynamic Maps, GIS Data, and Analysis Tools - International Maps

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    International Maps Below are some examples of how geographic information system (GIS) modeling is used in international resource analyses. The JPG images are samples of the maps available. Refer to the Geospatial Toolkits for further information. Map of the Republic of the Philippines Wind Speed at 100m Map of Republic of the Philippines Wind Power Density at 80m Map of Flat Plate Tilted at Latitude Resource of China Map of Republic of the Philippines Wind Speed at 100m JPG 6,336 KB Map of

  20. Trapped charge-induced field distortion on GIS spacers

    SciTech Connect

    Boggs, S.A. |; Wang, Y.

    1995-07-01

    Operation of GIS disconnectors can leave a dc voltage (electric field) on the switchgear which can cause charging of spacer surfaces. Analysis indicates that the surface charge density is related to the voltage-induced field. The charge distribution is likely to take the form of a strip, with a sharp termination of the charge density at one end which can result in a substantial field enhancement which adds to the field induced by the disconnector upon closing and increases the probability of a surface flashover when the disconnector is closed. This may explain failures in some early 550 kV disconnector designs.

  1. A GIS approach to cultural resources management and NEPA compliance

    SciTech Connect

    Moeller, K.

    1996-06-01

    Cultural resources management and historic preservation compliance are best approached within the broader framework of natural resources planning and land management. Argonne National Laboratory is currently assisting federal agencies with the development of computer- based resource management systems for large facilities, and cultural resources management and preservation are components of these systems. In the area of cultural resources, Argonne is using the GIS tool to demonstrate how federal facilities can manage large, complex databases, integrate cultural resource data with other environmental variables, model distributions of resources to aid in inventory and evaluation, link the data to quantitative and impact modes, and effectively manage and monitor resource planning activities and environmental compliance.

  2. Effect of band alignment on photoluminescence and carrier escape from InP surface quantum dots grown by metalorganic chemical vapor deposition on Si

    SciTech Connect

    Halder, Nripendra N.; Biswas, Pranab; Banerji, P.; Dhabal Das, Tushar; Das, Sanat Kr.; Chattopadhyay, S.; Biswas, D.

    2014-01-28

    A detailed analysis of photoluminescence (PL) from InP quantum dots (QDs) grown on Si has been carried out to understand the effect of substrate/host material in the luminescence and carrier escape process from the surface quantum dots. Such studies are required for the development of monolithically integrated next generation III-V QD based optoelectronics with fully developed Si microelectronics. The samples were grown by atmospheric pressure metalorganic chemical vapor deposition technique, and the PL measurements were made in the temperature range 1080?K. The distribution of the dot diameter as well as the dot height has been investigated from atomic force microscopy. The origin of the photoluminescence has been explained theoretically. The band alignment of InP/Si heterostructure has been determined, and it is found be type II in nature. The positions of the conduction band minimum of Si and the 1st excited state in the conduction band of InP QDs have been estimated to understand the carrier escape phenomenon. A blue shift with a temperature co-efficient of 0.19?meV/K of the PL emission peak has been found as a result of competitive effect of different physical processes like quantum confinement, strain, and surface states. The corresponding effect of blue shift by quantum confinement and strain as well as the red shift by the surface states in the PL peaks has been studied. The origin of the luminescence in this heterojunction is found to be due to the recombination of free excitons, bound excitons, and a transition from the 1st electron excited state in the conduction band (e{sub 1}) to the heavy hole band (hh{sub 1}). Monotonic decrease in the PL intensity due to increase of thermally escaped carriers with temperature has been observed. The change in barrier height by the photogenerated electric-field enhanced the capture of the carriers by the surface states rather than their accumulation in the QD excited state. From an analysis of the dependence of the

  3. GIS-BASED PREDICTION OF HURRICANE FLOOD INUNDATION

    SciTech Connect

    JUDI, DAVID; KALYANAPU, ALFRED; MCPHERSON, TIMOTHY; BERSCHEID, ALAN

    2007-01-17

    A simulation environment is being developed for the prediction and analysis of the inundation consequences for infrastructure systems from extreme flood events. This decision support architecture includes a GIS-based environment for model input development, simulation integration tools for meteorological, hydrologic, and infrastructure system models and damage assessment tools for infrastructure systems. The GIS-based environment processes digital elevation models (30-m from the USGS), land use/cover (30-m NLCD), stream networks from the National Hydrography Dataset (NHD) and soils data from the NRCS (STATSGO) to create stream network, subbasins, and cross-section shapefiles for drainage basins selected for analysis. Rainfall predictions are made by a numerical weather model and ingested in gridded format into the simulation environment. Runoff hydrographs are estimated using Green-Ampt infiltration excess runoff prediction and a 1D diffusive wave overland flow routing approach. The hydrographs are fed into the stream network and integrated in a dynamic wave routing module using the EPA's Storm Water Management Model (SWMM) to predict flood depth. The flood depths are then transformed into inundation maps and exported for damage assessment. Hydrologic/hydraulic results are presented for Tropical Storm Allison.

  4. GIS Symbology for FRMAC/CMHT Radiological/Nuclear Products

    SciTech Connect

    Walker, H; Aluzzi, F; Foster, K; Pobanz, B; Sher, B

    2008-10-06

    This document is intended to codify, to the extent currently possible, the representation of map products produced for and by the Federal Radiological Monitoring and Assessment Center (FRMAC) and the Consequence Management Home Team (CHMT), particularly those that include model products from the National Atmospheric Release Advisory Capability (NARAC). This is to facilitate consistency between GIS products produced by different members of these teams, which should ease the task of interpreting these products by both team members and those outside the team who may need to use these products during a response. The aspects of symbology being considered are primarily isopleths levels (breakpoints) and colors used to plot NARAC modeled dose or deposition fields on mpas, although some comments will be made about the handling of legend and supporting textual information. Other aspects of symbolizing such products (e.g., transparency) are being left to the individual team members to allow them to adapt to particular organizational needs or requirements that develop during a particular a response or exercise. This document has been written in coordination with the creation of training material in Baskett, et al., 2008. It is not intended as an aid to NARAC product interpretation but to facilitate the work of GIS specialists who deal with these products in map design and in the development of supporting scripts and software that partially or completely automate the integration of NARAC model products with other GIS data. This work was completed as part of the NA-42 Technical Integration Project on GIS Automated Data Processing and Map Production in FY 2008. Other efforts that are part of this work include (a) updating the NARAC shapefile product representation to facilitate the automation work proceed at RSL as part of the same TI effort and (b) to ensure that the NARAC shapefile construct includes all of the necessary legend and other textual data to interpret dispersion

  5. Geotechnical Seismic Hazard Evaluation At Sellano (Umbria, Italy) Using The GIS Technique

    SciTech Connect

    Capilleri, P.; Maugeri, M.

    2008-07-08

    A tool that has been widely-used in civil engineering in recent years is the geographic information system (GIS). Geographic Information systems (GIS) are powerful tools for organizing, analyzing, and presenting spatial data. The GIS can be used by geotechnical engineers to aid preliminary assessment through to the final geotechnical design. The aim of this work is to provide some indications for the use of the GIS technique in the field of seismic geotechnical engineering, particularly as regards the problems of seismic hazard zonation maps. The study area is the village of Sellano located in the Umbrian Apennines in central Italy, about 45 km east of Perugia and 120 km north-east of Rome The increasing importance attributed to microzonation derives from the spatial variability of ground motion due to particular local conditions. The use of GIS tools can lead to an early identification of potential barriers to project completion during the design process that may help avoid later costly redesign.

  6. West Flank Coso, CA FORGE ArcGIS data 2

    DOE Data Explorer

    Doug Blankenship

    2016-03-01

    archive of ArcGIS data from the West Flank FORGE site located in Coso, California. Archive contains: 8 shapefiles polygon of the 3D geologic model polylines of the traces 3D modeled faults polylines of the fault traces from Duffield and Bacon, 1980 polygon of the West Flank FORGE site polylines of the traces of the geologic cross-sections (cross-sections in a separate archive in the GDR) polylines of the traces of the seismic reflection profiles through and adjacent to the West Flank site (seismic reflection profiles in a separate archive in the GDR) points of the well collars in and around the West Flank site polylines of the surface expression of the West Flank well paths

  7. U.S. Regional Demand Forecasts Using NEMS and GIS

    SciTech Connect

    Cohen, Jesse A.; Edwards, Jennifer L.; Marnay, Chris

    2005-07-01

    The National Energy Modeling System (NEMS) is a multi-sector, integrated model of the U.S. energy system put out by the Department of Energy's Energy Information Administration. NEMS is used to produce the annual 20-year forecast of U.S. energy use aggregated to the nine-region census division level. The research objective was to disaggregate this regional energy forecast to the county level for select forecast years, for use in a more detailed and accurate regional analysis of energy usage across the U.S. The process of disaggregation using a geographic information system (GIS) was researched and a model was created utilizing available population forecasts and climate zone data. The model's primary purpose was to generate an energy demand forecast with greater spatial resolution than what is currently produced by NEMS, and to produce a flexible model that can be used repeatedly as an add-on to NEMS in which detailed analysis can be executed exogenously with results fed back into the NEMS data flow. The methods developed were then applied to the study data to obtain residential and commercial electricity demand forecasts. The model was subjected to comparative and statistical testing to assess predictive accuracy. Forecasts using this model were robust and accurate in slow-growing, temperate regions such as the Midwest and Mountain regions. Interestingly, however, the model performed with less accuracy in the Pacific and Northwest regions of the country where population growth was more active. In the future more refined methods will be necessary to improve the accuracy of these forecasts. The disaggregation method was written into a flexible tool within the ArcGIS environment which enables the user to output the results in five year intervals over the period 2000-2025. In addition, the outputs of this tool were used to develop a time-series simulation showing the temporal changes in electricity forecasts in terms of absolute, per capita, and density of demand.

  8. Intelligent Object-Oriented GIS Engine W/dynamic Coupling to Modeled Objects

    Energy Science and Technology Software Center

    1997-02-12

    The GEOVIEWER is an intelligent object-oriented Geographic Information System (GIS) engine that provides not only a spatially-optimized object representation, but also direct linkage to the underlying object, its data and behaviors. Tools are incorporated to perform tasks involving typical GIS functionality, data ingestion, linkage to external models, and integration with other application frameworks. The GOEVIEWER module was designed to provide GIS functionality to create, query, view, and manipulate software objects within a selected area undermore » investigation in a simulation system. Many of these objects are not stored in a format conductive to efficient GIS usage. Their dynamic nature, complexity, and the sheer number of possible entity classes preclude effective integration with traditional GIS technologies due to the loosely coupled nature of their data representations. The primary difference between GEOVIEWER and standard GIS packages is that standard GIS packages offer static views of geospatial data while GEOVIEWER can be dynamically coupled to models and/or applications producing data and, therefore, display changes in geometry, attributes or behavior as they occur in the simulation.« less

  9. Preparation and Execution of the GIS First Overhaul for Qinshan NPP Phase One

    SciTech Connect

    Kaihong Lou; Jiapeng Yan

    2006-07-01

    This paper addresses the necessity and feasibility of the first major overhaul on the GIS based on the analysis of the special conditions and the issues we confronted; After the comparison of various schemes, the optimized scheme is put forward; the paper also expounds the proper preparation and cautious practice which led to the hard but final accomplishment of the initial overhaul on the GIS; this article further explains the necessity of the major overhaul on the GIS through the disposal of abnormalities during the execution of this major overhaul. (authors)

  10. Development of detection and diagnostic techniques for partial discharges in GIS

    SciTech Connect

    Oyama, M.; Hanai, E.; Aoyagi, H.; Murase, H.; Ohshima, I.; Menju, S. )

    1994-04-01

    This paper describes detection and diagnostic techniques for partial discharges in GIS. Partial-discharge current waveforms of SF[sub 6] gas and external noise characteristics of actual substations were investigated, and a measuring system having sensors in GIS and employing frequency range of VHF band was developed. By this system, detecting very small partial discharges of several 10 pC level has become possible. Also, a neural network system, focusing attention as a method for recognizing patterns, was applied for determining causes for partial discharge in GIS, and its applicability has been proved.

  11. U.S. Renewable Energy Technical Potentials: A GIS-Based Analysis...

    OpenEI (Open Energy Information) [EERE & EIA]

    Renewable Energy Technical Potentials: A GIS-Based Analysis Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: U.S. Renewable Energy Technical Potentials: A...

  12. Development of a Carbon Management Geographic Information System (GIS) for the United States

    SciTech Connect

    Howard Herzog; Holly Javedan

    2009-12-31

    In this project a Carbon Management Geographical Information System (GIS) for the US was developed. The GIS stored, integrated, and manipulated information relating to the components of carbon management systems. Additionally, the GIS was used to interpret and analyze the effect of developing these systems. This report documents the key deliverables from the project: (1) Carbon Management Geographical Information System (GIS) Documentation; (2) Stationary CO{sub 2} Source Database; (3) Regulatory Data for CCS in United States; (4) CO{sub 2} Capture Cost Estimation; (5) CO{sub 2} Storage Capacity Tools; (6) CO{sub 2} Injection Cost Modeling; (7) CO{sub 2} Pipeline Transport Cost Estimation; (8) CO{sub 2} Source-Sink Matching Algorithm; and (9) CO{sub 2} Pipeline Transport and Cost Model.

  13. New Mexico Play Fairway Analysis: Particle Tracking ArcGIS Map Packages

    SciTech Connect

    Jeff Pepin

    2015-11-15

    These are map packages used to visualize geochemical particle-tracking analysis results in ArcGIS. It includes individual map packages for several regions of New Mexico including: Acoma, Rincon, Gila, Las Cruces, Socorro and Truth or Consequences.

  14. Integrating GIS with Distributed Applications Using Dynamic Data-Sharing Mechanisms

    SciTech Connect

    Burnett, Robert A. ); Tzemos, Spyridon ); Stoops, LaMar R. )

    2002-08-21

    Effective integration of a stand-alone GIS (e.g., ArcView 3.x) into a complex distributed software application requires an efficient, reliable mechanism for passing data and function requests to and from the GIS component. This paper describes the use of dynamic data-sharing and inter-process communication mechanisms to integrate GIS capability into a multi-jurisdictional distributed emergency management information system. These mechanisms include dynamic layer updates from spatial and attribute information shared via a distributed relational database across multiple sites; storage of private and shared ViewMarks to facilitate consistent GIS views; and asynchronous inter-process communication using function queuing and a data sharing library.

  15. Sensitivity of acoustic PD detection in GIS laboratory experiments and on-site experience

    SciTech Connect

    Schlemper, H.D.; Feser, K.; Blaum, H.; Kirchesch, P.

    1996-12-31

    The paper reports on acoustic partial discharge detection in the ultrasonic range for on-site testing of GIS installations. Laboratory experiments demonstrate sensitivities comparable to sensitive electrical PD measuring methods. More than 1,500 gas compartments of GIS installations were checked during commissioning tests. A test procedure was developed. The on-site experience motivated the development of an automatic signal classification system.

  16. Geographic Information System (GIS) Emergency Support for the May 2000 Cerro Grande Wildfire, Los Alamos, New Mexico, USA

    SciTech Connect

    C.R.Mynard; G.N.Keating; P.M.Rich; D.R. Bleakly

    2003-05-01

    In May 2000 the Cerro Grande wildfire swept through Los Alamos, New Mexico, burning approximately 17,400 ha (43,000 acres) and causing evacuation of Los Alamos National Laboratory (LANL) and the communities of Los Alamos and White Rock. An integral part of emergency response during the fire was the use of geographic information system (GIS) technology, which continues to be used in support of post-fire restoration and environmental monitoring. During the fire Laboratory GIS staff and volunteers from other organizations worked to produce maps and provide support for emergency managers, including at an emergency GIS facility in Santa Fe. Subsequent to the fire, Laboratory GIS teams supported the multiagency Burned Area Emergency Rehabilitation (BAER) team to provide GIS data and maps for planning mitigation efforts. The GIS teams continue to help researchers, operations personnel, and managers deal with the tremendous changes caused by the fire. Much of the work is under the auspices of the Cerro Grande Rehabilitation Project (CGRP) to promote recovery from fire damage, improve information exchange, enhance emergency management, and conduct mitigation activities. GIS efforts during the fire provided important lessons about institutional matters, working relationships, and emergency preparedness. These lessons include the importance of (1) an integrated framework for assessing natural and human hazards in a landscape context; (2) a strong GIS capability for emergency response; (3) coordinated emergency plans for GIS operations; (4) a method for employees to report their whereabouts and receive authoritative information during an evacuation; (5) GIS data that are complete, backed-up, and available during an emergency; (6) adaptation of GIS to the circumstances of the emergency; (7) better coordination in the GIS community; (8) better integration of GIS into LANL operations; and (9) a central data warehouse for data and metadata. These lessons are important for planning

  17. Geographic information system (G.I.S.) research project at Navajo Community College - Shiprock Campus

    SciTech Connect

    Yazzie, R.; Peter, C.; Aaspas, B.; Isely, D.; Grey, R.

    1995-12-31

    The Navajo and Hopi GIS Project was established to assess the feasibility and impact of implementing GIS techology at Tribal institutions. Los Alamos and Lawrence Livermore National Laboratories funded the Navajo and Hopi Geographic Information System (G.I.S.) Project and assigned a mentor from LANL to help guide the project for three summer months of 1995. The six organizations involved were: LANL, LLNL, Navajo Community College, Navajo Nation Land Office, Northern Arizona University and San Juan College. The Navajo Land Office provided the system software, hardware and training. Northern Arizona University selected two students to work at Hopi Water Resource Department. Navajo Community College provided two students and two faculty members. San Juan College provided one student to work with the N.C.C. group. This made up two project teams which led to two project sites. The project sites are the Water Resource Department on the Hopi reservation and Navajo Community College in Shiprock, New Mexico.

  18. Use of ArcGIS in Environmental Monitoring at Idaho National Laboratory

    SciTech Connect

    oertel; giles

    2007-06-01

    The Idaho National Laboratory is a U.S. Department of Energy site located in southeastern Idaho. The INL is required to perform environmental monitoring of anthropogenically introduced contaminants. One primary contaminant of interest is radioactive Cs-137 which is resident in INL soils due to past operational activities and atmospheric weapons testing. Collection of field data is performed using vehicle mounted and portable radiation detector units. All data is combined in ArcGIS and displayed over georeferenced satellite images and digital elevation models. The use of the ArcGIS geostatistical analysis package enhances the ability to look for areas of higher Cs-137 concentration. Combining current monitoring results with meteorological wind pattern maps allows for siting of new and improved monitoring locations. Use of the ArcGIS package provides an integrated analysis and mapping protocol for use in radioactive contaminant monitoring.

  19. Extended application in three phase enclosure type GIS to higher voltage

    SciTech Connect

    Ando, K.; Jyogo, Y.; Ohta, M. ); Hayashi, K.; Marutani, T.; Takatsuka, K.; Yamamoto, H. )

    1988-10-01

    GIS has remarkable features that enable to construct an EHV substation within the extremely restricted space indoors in urban areas. Three phase enclosure type GIS has been successfully applied at the voltages below 204kV for reliable power transmission to the congested areas in big cities. The voltage is now extended to EHV rated at 300kV. The key technologies in the development are 300kV one-break circuit breaker, reliable confinement of three phase components within a limited size of transportable enclosure and the suitable arrangement of GIS to minimize on-site works under restricted conditions. The new developments in these key technologies are presented in this paper.

  20. DC dielectric characteristics and conception of insulation design for DC GIS

    SciTech Connect

    Hasegawa, T.; Yamaji, K.; Hatano, M.; Aoyagi, H.; Taniguchi, Y.; Kobayashi, A.

    1996-10-01

    In order to discuss the dielectric performance of DC GIS, the flashover characteristics of gas-insulated bus were studied under conical- and disk-type spacers. The test involves the investigation on effect of electrification for charge to be accumulated in spacers and the effect of metallic particles. As the result, it was found that the dielectric characteristics of conical-type spacer are better than disk type. Moreover, the dielectric performance of DC GIS is more affected by the characteristics of coaxial electrode system than spacer surface with regard to metallic particle. On the basis of the results of these tests, this report presents the conception of insulation design for DC GIS.

  1. Using GIS technology to manage information following a bio-terrorism attack.

    SciTech Connect

    Melton, Brad; Ramsey, James L., Jr.; Finley, Patrick

    2005-05-01

    The BROOM system was developed to collect, manage and analyze information from bioterrorist attacks on strategic buildings. GIS features help decision-makers and analysts rapidly assess the current status of contaminated facilities and develop optimized cleanup strategies. BROOM consists of networked server, desktop and PDA components. PDAs are deployed to collect samples of suspected bioagents, such as anthrax. Novel geostatistical methods are used to generate contaminant maps and define optimum locations for subsequent sampling. Efficiency and accuracy gains witnessed in field tests show that GIS technology can play a vital role in visualizing, managing and analyzing data from bioterrorism incidents.

  2. Reignition surges at reactor current interruption in cable-system GIS

    SciTech Connect

    Zaima, E.; Okabe, S. ); Nishiwaki, S.; Ishikawa, M.; Nakamoto, T.; Murayama, Y.; Kawaguchi, Y. )

    1990-04-01

    Both a 150MVA reactor current interruption test using a GIS on an actual 275kV cable system and a laboratory high-frequency current interruption test using a 300kV SF{sub 6} gas circuit breaker have been conducted. The results of these tests and their analyses, made simultaneously, enabled the calculation of reignition surges and the detection of high-frequency arc extinctions caused when the reactor current was interrupted by a GIS on a cable system and they also enabled an evaluation of voltage escalation caused at high-frequency arc extinctions.

  3. Electromagnetic interference with electronic apparatus by switching surges in GIS-cable system

    SciTech Connect

    Nishiwaki, S.; Nojima, K.; Tatara, S.; Kosakada, M.; Tanabe, N.; Yanabu, S.

    1995-04-01

    Thyristor malignitions and protector relay failures caused by GCB closing in the GIS of a cable system could not be controlled by reducing the ground impedance or adding surge absorbing capacitors. As a result, a study was carried out on this problem with a 66kV mock-up apparatus installed in a factory. It was found that malignitions and failures such as mentioned above could be controlled by preventing 10MHz ultra high-frequency surges emitted by the GIS from leaking out into the grounding system.

  4. On-site measurement for the development of on-line partial discharge monitoring system in GIS

    SciTech Connect

    Masaki, K. ); Sakakibara, T.; Murase, H.; Akazaki, M.; Uehara, K.; Menju, S. )

    1994-04-01

    This paper deals with the results of field tests carried out to develop an on-line sensor for monitoring partial discharges generated in the GIS. It covers noise distribution in the GIS tank, the propagation of partial-discharge pulses, and its mechanisms, while presenting applications of partial-discharge on-line monitoring sensors.

  5. Investigation on abnormal phenomena of contacts using disconnecting switch and detachable bus in 300kV GIS

    SciTech Connect

    Mukaiyama, Y.; Takagi, I. ); Izumi, K.; Sekiguchi, T. ); Kobayashi, A.; Sumikawa, T. )

    1990-01-01

    This paper deals with abnormal phenomena caused by contact failure in gas-insulated switchgear (GIS). It covers simulation tests using an actual 300kV-2000A rated GIS and its evaluation regarding the deteriorative behavior of abnormal conditions.

  6. Development and Use of a GIS Workstation at the Oak Ridge National Laboratory

    SciTech Connect

    Dickey, Mark W

    2007-01-01

    Oak Ridge National Laboratory (ORNL) is the Department of Energy s (DOE) largest multipurpose science and energy laboratory. As an interdisciplinary research organization, access to information plays a critical part in the success of the many research efforts in progress at the Laboratory. The Research Library, in a supportive role, enables staff to fulfill the Laboratory s mission by making available a myriad of information resources including paper and electronic maps. The Research Library Geographic Information System (GIS) workstation was developed to better serve library customers by providing convenient access to a variety of mapping resources. The GIS workstation functions as a supplement to the paper map collection by providing customers with maps in an electronic format that can easily be inserted into memos, reports, and journal articles. Customer interest, together with the growing availability of low-cost and user-friendly mapping software, led to the development of the GIS workstation, which hosts an array of commercial mapping software that enables customers to produce ready-made topographic maps, current and historical maps, and road maps. Customers may also create customized maps using their own data or data supplied by the software vendor. This article focuses on the development, implementation, and use of the library s GIS workstation by providing a brief description of hardware components, mapping resources, and how these resources are used by Laboratory staff.

  7. RE Atlas: The U.S. Atlas of Renewable Resources (Interactive Map, GIS Data)

    DOE Data Explorer

    This interactive data map allows a user to explore the locations across the U.S. of many different basic, renewable energy resources. The many layers can be activated one at a time or in multiple combinations and the GIS display draws from a rich combination of data collections.

  8. Characteristics of GIS disconnector-induced short risetime transients incident on externally connected power system components

    SciTech Connect

    Fujimoto, N.; Boggs, S.A. )

    1988-07-01

    A significant fraction of GIS (Gas Insulated Switchers) failures occur concurrent with switching, and the short risetime transients generated by disconnector (DS) and breaker operation have been suspected of causing such failures. The effect of such transients on conventionally insulated apparatus, such as transformers and bushings, has generated interest, although no statistically significant evidence indicates a greater failure rate of such components when associated with GIS relative to the failure rate when installed in conventional stations. However, apparatus poorly designed to withstand such transients can suffer adverse affects. The purpose of this paper is to provide an indication of the waveshape and magnitude of transients which emerge from the GIS and propagate to externally connected apparatus. Capacitively graded bushings, overhead line connections, etc. tend to reduce the magnitude and cause a slight degradation in the risetime. Computer simulations and measurements have shown that external apparatus connected to GIS can be subjected to waveforms with risetimes in the range of 10-20ns and voltage rate-of-rise as high as 40 MV..mu..s. This is comparable to or in excess of the rate-of-rise during a chopped wave test.

  9. Preventive maintenance system with a different gas injecting facility for GIS

    SciTech Connect

    Utsumi, T.; Endo, F.; Ishikawa, T.; Iwaasa, S. . Hitachi Research Lab.); Yamagiwa, T. . Kokubu Works)

    1993-07-01

    A preventive maintenance system for gas-insulated switch gear (GIS) has been developed, which detects signs of trouble and prevents breakdowns in service. The system constantly monitors UHF signals, which are generated by partial discharges (PDs) and propagate in the GIS, by using couplers built into the apparatus. The PDs are detected at high sensitivity (5pC) and located according to the attenuation of the signals. Then the system injects a different gas into the section where PDs are occurring and improves the dielectric strength. This prevents faults in service and allows remedial actions to be taken with less urgency. By injecting a small quantity (5-10%) of c-C[sub 4]F[sub 8] into the GIS, dielectric strength is raised more than 20%. A preventive maintenance system with a facility to inject a different gas was constructed for a full-scale GIS model. The system detected and located PDs, and automatically injected the different gas to improve the dielectric strength.

  10. GIS solutions for ecosystem management in developing countries: A case study of Sao Tome and Principe

    SciTech Connect

    Barnes, L.; Barrasso, T.; Pinto da Costa, H.

    1995-12-01

    The purpose of this paper is to promote awareness of the application of the Geographic information system (GIS) technology to the management of ecosystems in developing countries. The adoptation of systematic environmental research and management techniques by national and local conservation programs helps ensure the sustainability of important biological resources.

  11. Integration of Predicted Atmospheric Contaminant Plumes into ArcView GIS

    SciTech Connect

    Koffman, Larry D.

    2005-10-10

    The Savannah River National Laboratory (SRNL) plays a key role in emergency response scenarios in which there may be a release of atmospheric chemical or radiological contamination at the DOE's Savannah River Site (SRS). Meteorologists at SRNL use a variety of tools to predict the path of the plume and levels of contamination along the path. These predictions are used to guide field teams that take sample measurements for verification. Integration of these predicted plumes as well as field measurements into existing Geographic Information System (GIS) interactive maps provides key additional information for decision makers during an emergency. In addition, having this information in GIS format facilitates sharing the information with other agencies that use GIS. In order to be useful during an emergency, an application for converting predictions or measurements into GIS format must be automated and simple to use. Thus, a key design goal in developing such applications is ease of use. Simple menu selections and intuitive forms with graphical user interfaces are used to accomplish this goal. Applications have been written to convert two different predictive code results into ArcView GIS. Meteorologists at SRNL use the Puff/Plume code, which is tied to real-time wind data, to predict the direction and spread of the atmospheric plume for early assessment. The calculated circular puffs are converted into an ArcView polygon shapefile with attributes for predicted time, dose, and radius of the puff. The meteorologists use the more sophisticated Lagrangian Particle Dispersion Model (LPDM) to predict particle dispersion and deposition. The calculational grid is brought into ArcView as a point shapefile and then interpolated to ARC GRID format using Spatial Analyst. This GRID can then be contoured into a line shapefile, which is easily shared with other agencies. The deposition grid is also automatically contoured for values that correspond to FDA Derived Intervention Levels

  12. Coastal water quality from remote sensing and GIS. A case study on South West Sardinia (Italy)

    SciTech Connect

    Poli, U.; Ippoliti, M.; Venturini, C.; Falcone, P.; Marino, A.

    1997-08-01

    In this paper the application of remote sensing image processing and GIS techniques in monitoring and managing coastal areas is proposed. The methodology has been applied to South-West Sardinia Coast where the environment is endangered by industrial plants and other human activities. The area is characterized by the presence of many submarine springs aligned along coastal cliffs. Water quality parameters (chlorophyll, suspended sediments and temperature) spatial and temporal variations, have been studied using Landsat TM images. Particularly, in this paper are reported the results referred to sea surface thermal gradients, considered as one of the main water quality index. Thermal gradients have been mapped in order to outline water circulation, thermal pollution and presence and distribution of submarine springs. Furthermore, a GIS approach of relating mono and multitemporal TM data with ground referenced information on industrial plants characteristics and distribution has been applied.

  13. The ArcSDE GIS Dynamic Population Model Tool for Savannah River Site Emergency Response

    SciTech Connect

    MCLANE, TRACY; JONES, DWIGHT

    2005-10-03

    The Savannah River Site (SRS) is a 310-square-mile Department of Energy site located near Aiken, South Carolina. With a workforce of over 10,000 employees and subcontractors, SRS emergency personnel must be able to respond to an emergency event in a timely and effective manner, in order to ensure the safety and security of the Site. Geographic Information Systems (GIS) provides the technology needed to give managers and emergency personnel the information they need to make quick and effective decisions. In the event of a site evacuation, knowing the number of on-site personnel to evacuate from a given area is an essential piece of information for emergency staff. SRS has developed a GIS Dynamic Population Model Tool to quickly communicate real-time information that summarizes employee populations by facility area and building and then generates dynamic maps that illustrate output statistics.

  14. GIS-technologies for integrated assessment of the productive mining areas

    SciTech Connect

    Zamaraev, R.Y.; Oparin, V.N.; Popov, S.E.; Potapov, V.P.; Pyastunovich,O.L.

    2008-05-15

    The paper describes the bases of a new application of GIS-technologies for integrated assessment and comparison of the productive mining areas, involving a wide range of mining and technological factors, considering mineral properties, mineral occurrence conditions and geographical advantages of a mineral deposit location. The model capabilities are exemplified by a comparison of technological characteristics of coals, transportation and power supply infrastructure of the productive mining areas at the Kuznetsk Coal Basin.

  15. Monitoring landscape response to climate change using remote sensing and GIS techniques

    SciTech Connect

    Yuhas, R.H.; Dolan, P.H.; Goetz, A.F.H. (Univ. of Colorado, Boulder, CO (United States))

    1992-01-01

    Increasing concern over the threat of global warming has precipitated the need for study sites which can be scientifically monitored to detect and follow the effects of environmental landscape change. Extensive eolian dune deposits in northeastern Colorado provide an ideal study site. These dune complexes, found along the South Platte River, are currently stabilized by a thin cover of shortgrass prairie vegetation. However, stratigraphic evidence demonstrates that during at least four times in the past 10,000 years, the dunes were actively migrating across the landscape. In addition, climate models indicate that the High Plains could be one of the first areas to react to climate changes when they occur. The scaling relationships that contribute to the evolution of the landscape are nearly impossible to understand without the regional perspective that remote sensing and geographical information system (GIS) techniques provide. Imagery acquired with the NASA/JPL Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) is processed to detect the amount of sand exposed, as well as the percent vegetation cover that is currently stabilizing the dunes. Excellent discrimination is found between areas of low and no vegetation, something not possible with traditional analysis methods. Seasonal changes are also emphasized. This information is incorporated into the GIS database the authors created, which also has information on parameters that influence the landscape: elevation, soil type, surface/subsurface hydrology, etc. With these data areas that are susceptible to climate change are highlighted, but more importantly, the reasons for the susceptibility are determined using the GIS's analytical capabilities.

  16. An open source GIS tool to quantify the visual impact of wind turbines and photovoltaic panels

    SciTech Connect

    Minelli, Annalisa; Marchesini, Ivan; Taylor, Faith E.; De Rosa, Pierluigi; Casagrande, Luca; Cenci, Michele

    2014-11-15

    Although there are clear economic and environmental incentives for producing energy from solar and wind power, there can be local opposition to their installation due to their impact upon the landscape. To date, no international guidelines exist to guide quantitative visual impact assessment of these facilities, making the planning process somewhat subjective. In this paper we demonstrate the development of a method and an Open Source GIS tool to quantitatively assess the visual impact of these facilities using line-of-site techniques. The methods here build upon previous studies by (i) more accurately representing the shape of energy producing facilities, (ii) taking into account the distortion of the perceived shape and size of facilities caused by the location of the observer, (iii) calculating the possible obscuring of facilities caused by terrain morphology and (iv) allowing the combination of various facilities to more accurately represent the landscape. The tool has been applied to real and synthetic case studies and compared to recently published results from other models, and demonstrates an improvement in accuracy of the calculated visual impact of facilities. The tool is named r.wind.sun and is freely available from GRASS GIS AddOns. - Highlights: • We develop a tool to quantify wind turbine and photovoltaic panel visual impact. • The tool is freely available to download and edit as a module of GRASS GIS. • The tool takes into account visual distortion of the shape and size of objects. • The accuracy of calculation of visual impact is improved over previous methods.

  17. Emerging Technologies in the Built Environment: Geographic Information Science (GIS), 3D Printing, and Additive Manufacturing

    SciTech Connect

    New, Joshua Ryan

    2014-01-01

    Abstract 1: Geographic information systems emerged as a computer application in the late 1960s, led in part by projects at ORNL. The concept of a GIS has shifted through time in response to new applications and new technologies, and is now part of a much larger world of geospatial technology. This presentation discusses the relationship of GIS and estimating hourly and seasonal energy consumption profiles in the building sector at spatial scales down to the individual parcel. The method combines annual building energy simulations for city-specific prototypical buildings and commonly available geospatial data in a GIS framework. Abstract 2: This presentation focuses on 3D printing technologies and how they have rapidly evolved over the past couple of years. At a basic level, 3D printing produces physical models quickly and easily from 3D CAD, BIM (Building Information Models), and other digital data. Many AEC firms have adopted 3D printing as part of commercial building design development and project delivery. This presentation includes an overview of 3D printing, discusses its current use in building design, and talks about its future in relation to the HVAC industry. Abstract 3: This presentation discusses additive manufacturing and how it is revolutionizing the design of commercial and residential facilities. Additive manufacturing utilizes a broad range of direct manufacturing technologies, including electron beam melting, ultrasonic, extrusion, and laser metal deposition for rapid prototyping. While there is some overlap with the 3D printing talk, this presentation focuses on the materials aspect of additive manufacturing and also some of the more advanced technologies involved with rapid prototyping. These technologies include design of carbon fiber composites, lightweight metals processing, transient field processing, and more.

  18. Development of analytic intermodal freight networks for use within a GIS

    SciTech Connect

    Southworth, F.; Xiong, D.; Middendorf, D.

    1997-05-01

    The paper discusses the practical issues involved in constructing intermodal freight networks that can be used within GIS platforms to support inter-regional freight routing and subsequent (for example, commodity flow) analysis. The procedures described can be used to create freight-routable and traffic flowable interstate and intermodal networks using some combination of highway, rail, water and air freight transportation. Keys to realistic freight routing are the identification of intermodal transfer locations and associated terminal functions, a proper handling of carrier-owned and operated sub-networks within each of the primary modes of transport, and the ability to model the types of carrier services being offered.

  19. Investigations of multiple reignition phenomena and protection scheme of shunt reactor current interruption in GIS substations

    SciTech Connect

    Okabe, S.; Kosakada, M. ); Toda, H.; Suzuki, K.; Ishikawa, M. )

    1993-01-01

    Carrying out field measurements and computer analysis concerning 150-MVA shunt reactor current interruptions at a 275-kV GIS substation, it is verified that high-frequency current interruptions can be caused by certain system structures on the circuit-breaker power-supply side. A shunt reactor current-interrupting test was conducted with phase-angle-control, which is considered to be the best preventing method against multiple reignitions, by using short-circuit-test facilities. Stable reignition-free interruption is confirmed to be possible even when the longest arcing time is preset.

  20. Spatial process and data models : toward integration of agent-based models and GIS.

    SciTech Connect

    Brown, D. G.; North, M. J.; Robinson, D. T.; Riolo, R.; Rand, W.; Decision and Information Sciences; Univ. of Michigan

    2007-10-01

    The use of object-orientation for both spatial data and spatial process models facilitates their integration, which can allow exploration and explanation of spatial-temporal phenomena. In order to better understand how tight coupling might proceed and to evaluate the possible functional and efficiency gains from such a tight coupling, we identify four key relationships affecting how geographic data (fields and objects) and agent-based process models can interact: identity, causal, temporal and topological. We discuss approaches to implementing tight integration, focusing on a middleware approach that links existing GIS and ABM development platforms, and illustrate the need and approaches with example agent-based models.

  1. Sensitivity of the UHF-method for defects in GIS with regard to on-line partial discharge detection

    SciTech Connect

    Kurrer, R.; Klunzinger, K.; Feser, K.; Kock, N. de; Sologuren, D.

    1996-12-31

    This paper presents measurements which have been carried out to investigate the sensitivity of the narrowband Ultra-High-Frequency-method (UHF-method) for partial discharges (p.d.) in gas insulated substations (GIS). The narrowband UHF-method is compared to the conventional p.d. detection method according to IEC 270. The following defects were investigated under laboratory conditions: fixed protrusions, free particles, particles on spacers, gas-filled cavities and floating electrodes. The p.d. signals are evaluated for the narrowband UHF-method and the IEC 270 method as a function of the electrical field strength. The results can be used to evaluate different field stress conditions and voltage levels in GIS. The measured results are discussed with regard to the on-line p.d. monitoring of GIS.

  2. Spatiotemporal nonpoint source pollution water quality management framework using bi-directional model-GIS linkage

    SciTech Connect

    Faizullabhoy, M.S.; Yoon, J.

    1999-07-01

    A framework for water quality assessment and management purposes was developed. In this framework, a bilateral linkage was implemented between the distributed model, Agricultural Nonpoint Source Pollution Model (AGNPS) and the Geographic Information System (GIS) to investigate a spatiotemporal nonpoint source pollution problem from a 750-acre watershed in the NSGA (Naval Security Group Activity) Northwest base at the Virginia/North Carolina border. AGNPS is an event-based, distributed parameter model that simulates runoff and the transport of sediment and nutrients (nitrogen and phosphorus) from predominantly agricultural watersheds. In this study rather than manually implementing AGNPS simulation, extracted data are integrated in an automated fashion through a direct bilateral linkage framework between the AGNPS model engine and the GIS. This bilateral linkage framework resulted in a powerful, up-to-date tool that would be capable of monitoring and instantaneously visualizing the transport of any pollutant as well as effectively identifying critical areas of the nonpoint source (NPS) pollution. The framework also allowed the various what if scenarios to support the decision-making processes. Best Management Practices (BMP) for the watershed can be generated in a close loop iterative scheme, until predefined management objectives are achieved. Simulated results showed that the optimal BMP scenario achieved an average reduction of about 41% in soluble and sediment-attached nitrogen and about 62% reduction in soluble and sediment phosphorus from current NPS pollution levels.

  3. The application of GIS and remote sensing technologies for site characterization and environmental assessment

    SciTech Connect

    Durfee, R.C.; McCord, R.A.; Dobson, J.E.

    1993-06-01

    Environmental cleanup and restoration of hazardous waste sites are major activities at federal facilities around the US. Geographic information systems (GIS) and remote sensing technologies are very useful computer tools to aid in site characterization, monitoring, assessment, and remediation efforts. Results from applying three technologies are presented to demonstrate examples of site characterization and environmental assessment for a federal facility. The first technology involves the development and use of GIS within the comprehensive Oak Ridge Environmental Information System (OREIS) to integrate facility data, terrain models, aerial and satellite imagery, demographics, waste area information, and geographic data bases. The second technology presents 3-D subsurface analyses and displays of groundwater and contaminant measurements within waste areas. In the third application, aerial survey information is being used to characterize land cover and vegetative patterns, detect change, and study areas of previous waste activities and possible transport pathways. These computer technologies are required to manage, analyze, and display the large amounts of environmental and geographic data that must be handled in carrying out effective environmental restoration.

  4. The application of GIS and remote sensing technologies for site characterization and environmental assessment

    SciTech Connect

    Durfee, R.C.; McCord, R.A.; Dobson, J.E.

    1993-01-01

    Environmental cleanup and restoration of hazardous waste sites are major activities at federal facilities around the US. Geographic information systems (GIS) and remote sensing technologies are very useful computer tools to aid in site characterization, monitoring, assessment, and remediation efforts. Results from applying three technologies are presented to demonstrate examples of site characterization and environmental assessment for a federal facility. The first technology involves the development and use of GIS within the comprehensive Oak Ridge Environmental Information System (OREIS) to integrate facility data, terrain models, aerial and satellite imagery, demographics, waste area information, and geographic data bases. The second technology presents 3-D subsurface analyses and displays of groundwater and contaminant measurements within waste areas. In the third application, aerial survey information is being used to characterize land cover and vegetative patterns, detect change, and study areas of previous waste activities and possible transport pathways. These computer technologies are required to manage, analyze, and display the large amounts of environmental and geographic data that must be handled in carrying out effective environmental restoration.

  5. Reliability of GIS EHV epoxy insulators: The need and prospects for more stringent acceptance criteria

    SciTech Connect

    Braun, J.M.; Ford, G.L.; Fujimoto, N.; Rizzetto, S.; Stone, G.C. )

    1993-01-01

    High reliability of gas insulated switchgear (GIS) is essential. However, more demanding partial discharge (PD) acceptance criteria for GIS insulators are required at the higher voltage classes to maintain these high levels of reliability. In addition to increased operating stresses and greater manufacturing difficulties, fundamental limitations exist which lessen PD detection sensitivity of large physical objects. PD scaling relationships are presented, based on a recently developed theory, which enable prediction of PD magnitude in equivalent defects in different insulators. For example, PD magnitudes of 2 to 5 pC (the current acceptance criterion) in a 138 kV insulator correspond to magnitudes of 0.5 to 1.2 pC for 550 kV insulators, based on certain assumptions. In effect, defects with greater severity would thus be passed in present factory tests for 550 kV insulators. To maintain the high levels of reliability that manufacturers and users alike have come to expect, PD acceptance criteria of 0.5 to 1.0 pC are proposed for 550 kV insulators to obtain a standard of severity equivalent to that in existence at 138 kV. To achieve this level of testing, a number of techniques, including ultra wideband measurements, are proposed to improve present PD detection technology by at least two orders of magnitude. Sensitivities of better than 0.01 pC at up to 400 kV were routinely achieved in a factory-like environment.

  6. Software requirements specification for the GIS-T/ISTEA pooled fund study phase C linear referencing engine

    SciTech Connect

    Amai, W.; Espinoza, J. Jr.; Fletcher, D.R.

    1997-06-01

    This Software Requirements Specification (SRS) describes the features to be provided by the software for the GIS-T/ISTEA Pooled Fund Study Phase C Linear Referencing Engine project. This document conforms to the recommendations of IEEE Standard 830-1984, IEEE Guide to Software Requirements Specification (Institute of Electrical and Electronics Engineers, Inc., 1984). The software specified in this SRS is a proof-of-concept implementation of the Linear Referencing Engine as described in the GIS-T/ISTEA pooled Fund Study Phase B Summary, specifically Sheet 13 of the Phase B object model. The software allows an operator to convert between two linear referencing methods and a datum network.

  7. GIS Framework for Large River Geomorphic Classification to Aid in the Evaluation of Flow-Ecology Relationships

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    2296 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 GIS Framework for Large River Geomorphic Classification to Aid in the Evaluation of Flow-Ecology Relationships CR Vernon EV Arntzen MC Richmond RA McManamay 1 TP Hanrahan CL Rakowski February 2013 PNNL-22296 GIS Framework for Large River Geomorphic Classification to Aid in the Evaluation of Flow-Ecology Relationships CR Vernon EV Arntzen MC Richmond RA McManamay 1 TP Hanrahan CL Rakwoski February 2013 Prepared for

  8. CHANNEL MORPHOLOGY TOOL (CMT): A GIS-BASED AUTOMATED EXTRACTION MODEL FOR CHANNEL GEOMETRY

    SciTech Connect

    JUDI, DAVID; KALYANAPU, ALFRED; MCPHERSON, TIMOTHY; BERSCHEID, ALAN

    2007-01-17

    This paper describes an automated Channel Morphology Tool (CMT) developed in ArcGIS 9.1 environment. The CMT creates cross-sections along a stream centerline and uses a digital elevation model (DEM) to create station points with elevations along each of the cross-sections. The generated cross-sections may then be exported into a hydraulic model. Along with the rapid cross-section generation the CMT also eliminates any cross-section overlaps that might occur due to the sinuosity of the channels using the Cross-section Overlap Correction Algorithm (COCoA). The CMT was tested by extracting cross-sections from a 5-m DEM for a 50-km channel length in Houston, Texas. The extracted cross-sections were compared directly with surveyed cross-sections in terms of the cross-section area. Results indicated that the CMT-generated cross-sections satisfactorily matched the surveyed data.

  9. Verification of the seismic resistance of gas-insulated switchgear (GIS)

    SciTech Connect

    Buck, K.E. ); Kleine-Tebbe, A. ); Rees, V. )

    1993-01-01

    After a brief introduction into the background of seismic requirements the paper describes the test procedures, demonstrating the capability of gas insulated switchgear to withstand seismic stresses up to highest ground accelerations of 0.75 g. The verification methods for checking the test object after test are described also. As vibrational tests are very cost intensive and therefore can only be performed with a representative switchgear arrangement, calculation methods for demonstrating the seismic withstand behavior of practical switchgear arrangements are needed. A calculation model will be described, adopted to the results of the representative seismic tests. The tests and calculation results demonstrate the suitability of a 3pole common enclosed GIS design for 145/170 kV for horizontal ground accelerations up to 0.75 g.

  10. Assessment of (mu)grid distributed energy resource potential using DER-CAM and GIS

    SciTech Connect

    Edwards, Jennifer L.; Marnay, Chris; Bartholomew, Emily; Ouaglal, Boubekeur; Siddiqui, Afzal S.; LaCommare, Kristina S.H.

    2002-01-01

    This report outlines an approach to assess the local potential for deployment of distributed energy resources (DER), small power-generation installations located close to the point where the energy they produce will be consumed. Although local restraints, such as zoning, building codes, and on-site physical barriers are well-known frustrations to DER deployment, no analysis method has been developed to address them within a broad economic analysis framework. The approach developed here combines established economic optimization techniques embedded in the Distributed Energy Resource Customer Adoption Model (DER-CAM) with a geographic information system (GIS) analysis of local land-use constraint. An example case in the San Diego area is developed from a strictly customer perspective, based on the premise that future development of DER may take the form of microgrids ((mu)Grids) under the control of current utility customers. Beginning with assumptions about which customer combinations h ave complementary energy loads, a GIS was used to locate specific neighborhoods in the San Diego area with promising customer combinations. A detailed energy analysis was conducted for the commercial/residential area chosen covering both electrical and heat energy requirements. Under various scenarios, different combinations of natural gas reciprocating engines were chosen by DER-CAM, ranging in size from 25 kW to 500 kW, often with heat recovery or absorption cooling. These generators typically operate throughout the day and are supplemented by purchased electricity during late-night and early-morning hours, when utility time-of-use prices are lowest. Typical (mu)Grid scenarios displaced about 80 percent of their annual gas heat load through CHP. Self-generation together with absorption cooling dramatically reduce electricity purchases, which usually only occur during nighttime hours.

  11. Using MCDA and GIS for hazardous waste landfill siting considering land scarcity for waste disposal

    SciTech Connect

    Feo, Giovanni De; Gisi, Sabino De

    2014-11-15

    Highlights: • Wasting land for the siting of hazardous waste landfills must be avoided. • The siting procedure is based on a land use map of potentially suitable areas. • All the waste facilities of the management system are simultaneously considered. • A case study is developed considering two multi-criteria techniques. • An innovative criteria weighting tool (PSW) is used in combination with the AHP. - Abstract: The main aim of this study was to develop a procedure that minimizes the wasting of space for the siting of hazardous waste landfills as part of a solid waste management system. We wanted to tackle the shortage of land for waste disposal that is a serious and growing problem in most large urban regions. The procedure combines a multi-criteria decision analysis (MCDA) approach with a geographical information system (GIS). The GIS was utilised to obtain an initial screening in order to eliminate unsuitable areas, whereas the MCDA was developed to select the most suitable sites. The novelty of the proposed siting procedure is the introduction of a new screening phase before the macro-siting step aimed at producing a “land use map of potentially suitable areas” for the siting of solid waste facilities which simultaneously takes into consideration all plant types. The issue of obtaining sites evaluations of a specific facility was coupled with the issue of not wasting land appropriate to facilitate other types of waste management options. In the developed case study, the use of an innovative criteria weighting tool (the “Priority Scale”) in combination with the Analytic Hierarchy Process was useful to easier define the priorities of the evaluation criteria in comparison with other classic methods such as the Paired Comparison Technique in combination with the Simple Additive Weighting method.

  12. A GIS-based Adaptive Management Decision Support System to Develop a Multi-Objective Framework: A case study utilizing GIS technologies and physically-based models to archieve improved decision making for site management.

    SciTech Connect

    Coleman, Andre M.; Wigmosta, Mark S.; Lane, Leonard J.; Tagestad, Jerry D.; Roberts, Damon

    2008-06-26

    The notion of Adaptive Management (AM) allows for the realization and adjustment of management practices in response to elements of uncertainty. In terms of natural resource management, this will typically integrate monitoring, databases, simulation modeling, decision theory, and expert judgment to evaluate management alternatives and adapt them as necessary to continually improve the natural resource condition as defined by the stakeholders. Natural resource management scenarios can often be expressed, viewed, and understood as a spatial and temporal problem. The integration of Geographic Information System (GIS) technologies and physically-based models provide an effective state-of-the-art solution for deriving, understanding, and applying AM scenarios for land use and remediation. A recently developed GIS-based adaptive management decision support system is presented for the U.S. Department of Defense Yakima Training Center near Yakima, Washington.

  13. NM WAIDS: A PRODUCED WATER QUALITY AND INFRASTRUCTURE GIS DATABASE FOR NEW MEXICO OIL PRODUCERS

    SciTech Connect

    Martha Cather; Robert Lee; Ibrahim Gundiler; Andrew Sung; Naomi Davidson; Ajeet Kumar Reddy; Mingzhen Wei

    2003-04-01

    The New Mexico Water and Infrastructure Data System (NM WAIDS) seeks to alleviate a number of produced water-related issues in southeast New Mexico. The project calls for the design and implementation of a Geographical Information System (GIS) and integral tools that will provide operators and regulators with necessary data and useful information to help them make management and regulatory decisions. The major components of this system are: (1) databases on produced water quality, cultural and groundwater data, oil pipeline and infrastructure data, and corrosion information, (2) a web site capable of displaying produced water and infrastructure data in a GIS or accessing some of the data by text-based queries, (3) a fuzzy logic-based, site risk assessment tool that can be used to assess the seriousness of a spill of produced water, and (4) a corrosion management toolkit that will provide operators with data and information on produced waters that will aid them in deciding how to address corrosion issues. The various parts of NM WAIDS will be integrated into a website with a user-friendly interface that will provide access to previously difficult-to-obtain data and information. Primary attention during the first six months of this project has been focused on creating the water quality databases for produced water and surface water, along with collection of corrosion information and building parts of the corrosion toolkit. Work on the project to date includes: (1) Creation of a water quality database for produced water analyses. The database was compiled from a variety of sources and currently has over 4000 entries for southeast New Mexico. (2) Creation of a web-based data entry system for the water quality database. This system allows a user to view, enter, or edit data from a web page rather than having to directly access the database. (3) Creation of a semi-automated data capturing system for use with standard water quality analysis forms. This system improves the

  14. NM WAIDS: A PRODUCED WATER QUALITY AND INFRASTRUCTURE GIS DATABASE FOR NEW MEXICO OIL PRODUCERS

    SciTech Connect

    Martha Cather; Robert Lee; Ibrahim Gundiler; Andrew Sung

    2003-09-24

    The New Mexico Water and Infrastructure Data System (NM WAIDS) seeks to alleviate a number of produced water-related issues in southeast New Mexico. The project calls for the design and implementation of a Geographical Information System (GIS) and integral tools that will provide operators and regulators with necessary data and useful information to help them make management and regulatory decisions. The major components of this system are: (1) Databases on produced water quality, cultural and groundwater data, oil pipeline and infrastructure data, and corrosion information. (2) A web site capable of displaying produced water and infrastructure data in a GIS or accessing some of the data by text-based queries. (3) A fuzzy logic-based, site risk assessment tool that can be used to assess the seriousness of a spill of produced water. (4) A corrosion management toolkit that will provide operators with data and information on produced waters that will aid them in deciding how to address corrosion issues. The various parts of NM WAIDS will be integrated into a website with a user-friendly interface that will provide access to previously difficult-to-obtain data and information. Primary attention during the first six months of this project was focused on creating the water quality databases for produced water and surface water, along with collecting of corrosion information and building parts of the corrosion toolkit. Work on the project to date includes: (1) Creation of a water quality database for produced water analyses. The database was compiled from a variety of sources and currently has over 7000 entries for New Mexico. (2) Creation of a web-based data entry system for the water quality database. This system allows a user to view, enter, or edit data from a web page rather than having to directly access the database. (3) Creation of a semi-automated data capturing system for use with standard water quality analysis forms. This system improves the accuracy and speed

  15. GIS-and Web-based Water Resource Geospatial Infrastructure for Oil Shale Development

    SciTech Connect

    Zhou, Wei; Minnick, Matthew; Geza, Mengistu; Murray, Kyle; Mattson, Earl

    2012-09-30

    The Colorado School of Mines (CSM) was awarded a grant by the National Energy Technology Laboratory (NETL), Department of Energy (DOE) to conduct a research project en- titled GIS- and Web-based Water Resource Geospatial Infrastructure for Oil Shale Development in October of 2008. The ultimate goal of this research project is to develop a water resource geo-spatial infrastructure that serves as “baseline data” for creating solutions on water resource management and for supporting decisions making on oil shale resource development. The project came to the end on September 30, 2012. This final project report will report the key findings from the project activity, major accomplishments, and expected impacts of the research. At meantime, the gamma version (also known as Version 4.0) of the geodatabase as well as other various deliverables stored on digital storage media will be send to the program manager at NETL, DOE via express mail. The key findings from the project activity include the quantitative spatial and temporal distribution of the water resource throughout the Piceance Basin, water consumption with respect to oil shale production, and data gaps identified. Major accomplishments of this project include the creation of a relational geodatabase, automated data processing scripts (Matlab) for database link with surface water and geological model, ArcGIS Model for hydrogeologic data processing for groundwater model input, a 3D geological model, surface water/groundwater models, energy resource development systems model, as well as a web-based geo-spatial infrastructure for data exploration, visualization and dissemination. This research will have broad impacts of the devel- opment of the oil shale resources in the US. The geodatabase provides a “baseline” data for fur- ther study of the oil shale development and identification of further data collection needs. The 3D geological model provides better understanding through data interpolation and

  16. A GIS-assisted approach to wide-area wind resource assessment and site selection for the state of Colorado

    SciTech Connect

    Brower, M.C.; Hurley, P.; Simon, R.

    1996-12-31

    This paper describes the methodology and results of a wide-area wind resource assessment and site selection in Colorado. This was the first phase in a three-part assessment and monitoring program conducted for the State of Colorado Office of Energy Conservation and several collaborating utilities. The objective of this phase was to identify up to 20 candidate sites for evaluation and possible long-term monitoring. This was accomplished using a geographic information system (GIS), which takes into account such factors as topography, existing wind resource data, locations of transmission lines, land cover, and land use. The resulting list of sites recommended for evaluation in Phase 2 of the study includes locations throughout Colorado, but most are in the eastern plains. The GIS wind siting model may be modified and updated in the future as additional information becomes available. 3 figs., 1 tab.

  17. Efficient Calculation of Dewatered and Entrapped Areas Using Hydrodynamic Modeling and GIS

    SciTech Connect

    Richmond, Marshall C.; Perkins, William A.

    2009-12-01

    River waters downstream of a hydroelectric project are often subject to rapidly changing discharge. Abrupt decreases in discharge can quickly dewater and expose some areas and isolate other areas from the main river channel, potentially stranding or entrapping fish, which often results in mortality. A methodology is described to estimate the areas dewatered or entrapped by a specific reduction in upstream discharge. A one-dimensional hydrodynamic model was used to simulate steady flows. Using flow simulation results from the model and a geographic information system (GIS), estimates of dewatered and entrapped areas were made for a wide discharge range. The methodology was applied to the Hanford Reach of the Columbia River in central Washington State. Results showed that a 280 m$^3$/s discharge reduction affected the most area at discharges less than 3400 m$^3$/s. At flows above 3400 m$^3$/s, the affected area by a 280 m$^3$/s discharge reduction (about 25 ha) was relatively constant. A 280 m$^3$/s discharge reduction at lower flows affected about twice as much area. The methodology and resulting area estimates were, at the time of writing, being used to identify discharge regimes, and associated water surface elevations, that might be expected to minimize adverse impacts on juvenile fall chinook salmon (\\emph{Oncorhynchus tshawytscha}) that rear in the shallow near-shore areas in the Hanford Reach.

  18. Adapting a GIS-Based Multicriteria Decision Analysis Approach for Evaluating New Power Generating Sites

    SciTech Connect

    Omitaomu, Olufemi A; Blevins, Brandon R; Jochem, Warren C; Mays, Gary T; Belles, Randy; Hadley, Stanton W; Harrison, Thomas J; Bhaduri, Budhendra L; Neish, Bradley S; Rose, Amy N

    2012-01-01

    There is a growing need to site new power generating plants that use cleaner energy sources due to increased regulations on air and water pollution and a sociopolitical desire to develop more clean energy sources. To assist utility and energy companies as well as policy-makers in evaluating potential areas for siting new plants in the contiguous United States, a geographic information system (GIS)-based multicriteria decision analysis approach is presented in this paper. The presented approach has led to the development of the Oak Ridge Siting Analysis for power Generation Expansion (OR-SAGE) tool. The tool takes inputs such as population growth, water availability, environmental indicators, and tectonic and geological hazards to provide an in-depth analysis for siting options. To the utility and energy companies, the tool can quickly and effectively provide feedback on land suitability based on technology specific inputs. However, the tool does not replace the required detailed evaluation of candidate sites. To the policy-makers, the tool provides the ability to analyze the impacts of future energy technology while balancing competing resource use.

  19. Applying GIS characterizing and modeling contaminant transport in surface water at Los Alamos National Laboratory

    SciTech Connect

    Becker, N.M.; Van Eeckhout, E.; David, N.A.; Irvine, J.M.

    1995-10-01

    During World War II, Los Alamos, New Mexico was chosen as the site for the secret development of the first atomic bomb. The remote location in the southwestern United States was ideal for such a project. After the war, research activities continued at the Los Alamos installation, focusing on new nuclear weapons models as well as greater effectiveness and reliability of existing weapons. Due to the emphasis on nuclear and non-nuclear weapons development as well as associated nuclear research, a large inventory of radionuclides and heavy metals have been tested, expended, and disposed of in the local environment, a high plateau of tuffaceous volcanic rocks incised by deep canyons in a semi-arid climate. In recent years an intensive evaluation of the environmental, impact of weapons testing at Los Alamos and elsewhere has been undertaken. GIS system utilization and image processing of past and current data has been an important part of this evaluation. Important problems can be more easily displayed and understood using this methodology. The main objective in this paper is to illustrate how transport of depleted uranium and associated heavy metals (copper in this case) used in dynamic testing of weapons components at open air firing sites can be evaluated and visualized. In our studies, surface water has been found to be the predominant transport mechanism. We have sampled soils, sediments, fallout, runoff water and snowmelt over a number of years in order to understand contaminant transport on- and offsite. Statistical analyses of these data have assisted in our characterization of issues such as contaminant variability, spatially and temporally, as well as in development of transport rates.

  20. Discover, Visualize, and Deliver Geospatial Data through OGC Standards-based WebGIS System

    SciTech Connect

    Wei, Yaxing; SanthanaVannan, Suresh K; Cook, Robert B

    2009-01-01

    Geospatial data are important to understand the Earth - ecosystem dynamics, land cover changes, resource management, and human interactions with the Earth to name a few. One of the biggest difficulties users face is to discover, access, and assemble distributed, large volume, heterogeneous geospatial data to conduct geo-analysis. Traditional methods of geospatial data discovery, visualization, and delivery lack the capabilities of resource sharing and automation across systems or organizational boundaries. They require users to download the data ldquoas-isrdquo in their original file format, projection, and extent. Also, discovering data served by traditional methods requires prior knowledge of data location, and processing requires specialized expertise. These drawbacks of traditional methods create additional burden to users, introduce too much overhead to research, and also reduce the potential usage of the data. At the Oak Ridge National Laboratory (ORNL), researchers working on NASA-sponsored projects: Distributed Active Archive Center (DAAC) and Modeling and Synthesis Thematic Data Center (MAST-DC) have tapped into the benefits of Open Geospatial Consortium (OGC) standards to overcome the drawbacks of traditional methods of geospatial data discovery, visualization, and delivery. The OGC standards-based approach facilitates data sharing and interoperability across network, organizational, and geopolitical boundaries. Tools and services based on OGC standards deliver the data in many user defined formats and allow users to visualize the data prior to download. This paper introduces an approach taken to visualize and deliver ORNL DAAC, MAST-DC, and other relevant geospatial data through OGC standards-based Web Services, including Web Map Service (WMS), Web Coverage Service (WCS), and Web Feature Service (WFS). It also introduces a WebGIS system built on top of OGC services that helps users discover, visualize, and access geospatial data.

  1. Evaluation of Open Geospatial Consortium Standards fur Use In LLNL Geographic Information Systems (GIS)

    SciTech Connect

    Walker, H; Chou, R; Chubb, K; Schek, J

    2005-09-28

    The objective of this project is to evaluate existing and emerging Open Geospatial Consortium (OGC) standards for use in LLNL programs that rely heavily on geographic data. OGC standards are intended to facilitate interoperability between geospatial processing systems to avoid duplication of effort, lower development costs, and encourage competition based on improved capability and performance rather than vendor lock-in. Some of these standards appear to be gaining traction in the geospatial data community, the Federal government, DOE and DHS. A serious evaluation of this technology is appropriate at this time due to increasing interest and mandated compliance in the Federal government in some situations. A subset of OGC standards is identified and reviewed with a focus on applications to LLNL programs. Each standard or recommendation reviewed was evaluated in general terms. In addition, for specific programs such as Gen&SIS and NARAC, a specific evaluation was made of several of the standards and how they could be used most effectively. It is also important to evaluate the acceptance of these standards in the commercial arena. The implementation of OGC standards by the largest GIS vendor (ESRI) was reviewed. At present, OGC standards are primary useful in specific situations. More generally, many of the standards are immature and their impact on the government and commercial sectors is unclear. Consequently, OGC and related developments need to be observed. As specific standards or groups of standards mature and establish their relevance, these can also be incorporated in LLNL programs as requirements dictate, especially if open implementations and commercial products are available.

  2. Web-GIS oriented systems viability for municipal solid waste selective collection optimization in developed and transient economies

    SciTech Connect

    Rada, E.C.; Ragazzi, M.; Fedrizzi, P.

    2013-04-15

    Highlights: ► As an appropriate solution for MSW management in developed and transient countries. ► As an option to increase the efficiency of MSW selective collection. ► As an opportunity to integrate MSW management needs and services inventories. ► As a tool to develop Urban Mining actions. - Abstract: Municipal solid waste management is a multidisciplinary activity that includes generation, source separation, storage, collection, transfer and transport, processing and recovery, and, last but not least, disposal. The optimization of waste collection, through source separation, is compulsory where a landfill based management must be overcome. In this paper, a few aspects related to the implementation of a Web-GIS based system are analyzed. This approach is critically analyzed referring to the experience of two Italian case studies and two additional extra-European case studies. The first case is one of the best examples of selective collection optimization in Italy. The obtained efficiency is very high: 80% of waste is source separated for recycling purposes. In the second reference case, the local administration is going to be faced with the optimization of waste collection through Web-GIS oriented technologies for the first time. The starting scenario is far from an optimized management of municipal solid waste. The last two case studies concern pilot experiences in China and Malaysia. Each step of the Web-GIS oriented strategy is comparatively discussed referring to typical scenarios of developed and transient economies. The main result is that transient economies are ready to move toward Web oriented tools for MSW management, but this opportunity is not yet well exploited in the sector.

  3. Integration of Long-Term Research into a GIS Based Landscape Habitat Model for the Red-Cockaded Woodpecker

    SciTech Connect

    Franzreb, K.; Lloyd, F.T.

    2000-10-01

    The red cockaded woodpecker has been intensively studied since 1985 when the population was on the verge of extinction. The population decline is primarily the result of timber harvesting prior to 1950 and restricted burning. Construction of artificial cavities, translocations, competitor control, and removal of hardwood mid-story has provided suitable habitat. Since 1985, the population has increased from 4 to 99 birds. A GIS model is being developed to simulate the development of habitat at SRS in relation to management and existing vegetation.

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

    DOE Data Explorer

    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.

  5. Suppression of VFT in 1,100 kV GIS by adopting resistor-fitted disconnector

    SciTech Connect

    Yamagata, Y.; Tanaka, K.; Nishiwaki, S.; Miwa, I.; Takahashi, N.; Komukai, T.; Kokumai, T.; Imai, K.

    1996-04-01

    With 1,000 kV transmission lines planned in Japan, very fast transient (VFT) phenomena will be suppressed by installing a resistor in a disconnector o gas insulated switchgear (GIS). In this paper the VFT overvoltage suppressing effect of the resistor and the duty required of the resistor are clarified. A 1,100 kV resistor-fitted disconnector was tested by constructing a charging current interruption test circuit. It has been clarified that the disconnector accepts the required duty. The disconnector tested here will be used for the field test.

  6. Radiological Survey Tool Set for ArcGIS 8.3 and ArcPad 6.0

    SciTech Connect

    ROGER, COTTRELL

    2004-11-30

    The Radiological Control Operations (RCO) group at the Savannah River Site (SRS) is tasked with conducting routine surveys for the detection of radiological contaminants in the environment. The Radiological Survey Tool Set (RSTS) was developed by the Environmental & Geographic Information Systems (EGIS) group of SRS to assist RCO personnel in this survey process. The tool set consists of two major components. The first component is a custom extension for ArcGIS 8.3 that allows the user to interactively create a sampling plan prior to entering the field. Additionally, the extension allows the user to upload field-collected data to the GIS with post-processing functionality. The second component is a custom ArcPad 6.0 applet. This applet provides the user with navigational capabilities to a selected origin point with the help of Global Positioning Systems (GPS) technology, and the recording of the sample data results into a hand-held field computer via ArcPad 6.0 software.

  7. Integrating multi-criteria decision analysis for a GIS-based hazardous waste landfill sitting in Kurdistan Province, western Iran

    SciTech Connect

    Sharifi, Mozafar Hadidi, Mosslem Vessali, Elahe Mosstafakhani, Parasto Taheri, Kamal Shahoie, Saber Khodamoradpour, Mehran

    2009-10-15

    The evaluation of a hazardous waste disposal site is a complicated process because it requires data from diverse social and environmental fields. These data often involve processing of a significant amount of spatial information which can be used by GIS as an important tool for land use suitability analysis. This paper presents a multi-criteria decision analysis alongside with a geospatial analysis for the selection of hazardous waste landfill sites in Kurdistan Province, western Iran. The study employs a two-stage analysis to provide a spatial decision support system for hazardous waste management in a typically under developed region. The purpose of GIS was to perform an initial screening process to eliminate unsuitable land followed by utilization of a multi-criteria decision analysis (MCDA) to identify the most suitable sites using the information provided by the regional experts with reference to new chosen criteria. Using 21 exclusionary criteria, as input layers, masked maps were prepared. Creating various intermediate or analysis map layers a final overlay map was obtained representing areas for hazardous waste landfill sites. In order to evaluate different landfill sites produced by the overlaying a landfill suitability index system was developed representing cumulative effects of relative importance (weights) and suitability values of 14 non-exclusionary criteria including several criteria resulting from field observation. Using this suitability index 15 different sites were visited and based on the numerical evaluation provided by MCDA most suitable sites were determined.

  8. GIS insulation co-ordination: On-site tests and dielectric diagnostic techniques, a utility point of view

    SciTech Connect

    Sabot, A.; Petit, A.; Taillebois, J.P.

    1996-07-01

    This paper summarizes the Electricite de France experience with insulation co-ordination of GIS. After a review of the insulation co-ordination practice mainly dealing with fast front overvoltage and the one minute AC test, some results of the on-site test procedure applied since 30 years are presented and related to the insulation co-ordination practice. The in-service return of experience dealing with dielectric failures is analyzed then the dielectric diagnostic techniques now available are briefly presented with their possibilities and limitations. According to this survey, the expectations of EDF from these diagnostic techniques as well as the new on-site test and on-line monitoring tendencies at EDF are presented.

  9. GIS Framework for Large River Geomorphic Classification to Aid in the Evaluation of Flow-Ecology Relationships

    SciTech Connect

    Vernon, Christopher R.; Arntzen, Evan V.; Richmond, Marshall C.; McManamay, R. A.; Hanrahan, Timothy P.; Rakowski, Cynthia L.

    2013-02-01

    Assessing the environmental benefits of proposed flow modification to large rivers provides invaluable insight into future hydropower project operations and relicensing activities. Providing a means to quantitatively define flow-ecology relationships is integral in establishing flow regimes that are mutually beneficial to power production and ecological needs. To compliment this effort an opportunity to create versatile tools that can be applied to broad geographic areas has been presented. In particular, integration with efforts standardized within the ecological limits of hydrologic alteration (ELOHA) is highly advantageous (Poff et al. 2010). This paper presents a geographic information system (GIS) framework for large river classification that houses a base geomorphic classification that is both flexible and accurate, allowing for full integration with other hydrologic models focused on addressing ELOHA efforts. A case study is also provided that integrates publically available National Hydrography Dataset Plus Version 2 (NHDPlusV2) data, Modular Aquatic Simulation System two-dimensional (MASS2) hydraulic data, and field collected data into the framework to produce a suite of flow-ecology related outputs. The case study objective was to establish areas of optimal juvenile salmonid rearing habitat under varying flow regimes throughout an impounded portion of the lower Snake River, USA (Figure 1) as an indicator to determine sites where the potential exists to create additional shallow water habitat. Additionally, an alternative hydrologic classification useable throughout the contiguous United States which can be coupled with the geomorphic aspect of this framework is also presented. This framework provides the user with the ability to integrate hydrologic and ecologic data into the base geomorphic aspect of this framework within a geographic information system (GIS) to output spatiotemporally variable flow-ecology relationship scenarios.

  10. Use of GIS and 3D Modeling for Development and Conceptualization of a Performance Assessment Model for Decommissioning of a Complex Site

    SciTech Connect

    Esh, D. W.; Gross, A. J.; Thaggard, M.

    2006-07-01

    Geographic Information Systems (GIS) and 3D geo-spatial modeling were employed to facilitate development and conceptualization of a performance assessment (PA) model that will be used to evaluate the health impacts of residual radioactivity at a former nuclear materials processing facility site in New York. Previous operations have resulted in a number of different sources of radiological contamination that must be assessed during site decommissioning. A performance assessment model is being developed to estimate radiological dose to potential receptors through the simulation of the release and transport of radionuclides, and exposure to residual contamination for hundreds to thousands of years in the future. A variety of inputs are required to parameterize the performance assessment model, such as: distance from the waste to surface water bodies, thickness of geologic units for saturated transport, saturated thickness of the geologic units, and spatial and temporal average of percent of waste that is saturated. GIS and 3D modeling are used to analyze and abstract aleatory uncertainty associated with the dimensionality of the geologic system into epistemic uncertainty for one- and two-dimensional process models for flow and transport of radionuclides. Three-dimensional geo-spatial modeling was used to develop the geologic framework and the geometrical representation of the residual contamination within the geologic framework. GIS was used in the initial development and parameterization of the transport pathways, to provide spatial context to the PA model, and to link it to the 3D geologic framework and contamination geometry models. Both the GIS and 3-D modeling were used to interpret the results of runs of the PA model. (authors)

  11. Macroalgae Analysis A National GIS-based Analysis of Macroalgae Production Potential Summary Report and Project Plan

    SciTech Connect

    Roesijadi, Guritno; Coleman, Andre M.; Judd, Chaeli; Van Cleve, Frances B.; Thom, Ronald M.; Buenau, Kate E.; Tagestad, Jerry D.; Wigmosta, Mark S.; Ward, Jeffrey A.

    2011-12-01

    The overall project objective is to conduct a strategic analysis to assess the state of macroalgae as a feedstock for biofuels production. The objective in FY11 is to develop a multi-year systematic national assessment to evaluate the U.S. potential for macroalgae production using a GIS-based assessment tool and biophysical growth model developed as part of these activities. The initial model development for both resource assessment and constraints was completed and applied to the demonstration areas. The model for macroalgal growth was extended to the EEZ off the East and West Coasts of the United States, and a plan to merge the findings for an initial composite assessment was developed. In parallel, an assessment of land-based, port, and offshore infrastructure needs based on published and grey literature was conducted. Major information gaps and challenges encountered during this analysis were identified. Also conducted was an analysis of the type of local, state, and federal requirements that pertain to permitting land-based facilities and nearshore/offshore culture operations

  12. Advanced circuit breaker technology and its application in live-tank, GIS and dead-tank switchgear

    SciTech Connect

    Kirchesch, P.; Thiel, H.G.; McCabe, A.

    1995-10-01

    The arc in conventional gas-blast circuit breakers is merely a passive element to be quenched by a trans-sonic gas flow of sufficient pressure. The latter is generated mechanically by rather simple means, but is not the most suitable for present day applications. The arc in a self-blast breaker is an active element controlling the breaker action in a complicated manner from contact separation to extinction at one of the subsequent current zeros. For these reasons, the development of the 3rd Generation SF{sub 6} switchgear requires high-level research activities including arc physics, flow dynamics, material sciences and mechanics. The theoretical modeling has pointed out to be a valuable tool to approach the final design sufficiently closely already before the series of switching tests are performed. Further steps of improvement require highly sophisticated CFD in order to obtain high-resolution space-time patterns of the interesting physical quantities and to point out the influence of details of the design. The reward for these efforts is the new generation of high-technology circuit breakers designed as open terminal, GIS or dead-tank switchgear which guarantees a safe power distribution with minimum maintenance during a long service life.

  13. Structural Analysis for Gold Mineralization Using Remote Sensing and Geochemical Techniques in a GIS Environment: Island of Lesvos, Hellas

    SciTech Connect

    Rokos, D. Argialas, D. Mavrantza, R. St Seymour, K.; Vamvoukakis, C.; Kouli, M.; Lamera, S.; Paraskevas, H.; Karfakis, I.; Denes, G

    2000-12-15

    Exploration for epithermal Au has been active lately in the Aegean Sea of the eastern Mediterranean Basin, both in the islands of the Quaternary arc and in those of the back-arc region. The purpose of this study was the structural mapping and analysis for a preliminary investigation of possible epithermal gold mineralization, using remotely sensed data and techniques, structural and field data, and geochemical information, for a specific area on the Island of Lesvos. Therefore, Landsat-TM and SPOT-Pan satellite images and the Digital Elevation Model (DEM) of the study area were processed digitally using spatial filtering techniques for the enhancement and recognition of the geologically significant lineaments, as well as algebraic operations with band ratios and Principal Component Analysis (PCA), for the identification of alteration zones. Statistical rose diagrams and a SCHMIDT projection Stereo Net were generated from the lineament maps and the collected field data (dip and strike measurements of faults, joints, and veins), respectively. The derived lineament map and the band ratio images were manipulated in a GIS environment, in order to study the relation of the tectonic pattern to both the alteration zoning and the geomorphology of the volcanic field of the study area. Target areas of high interest for possible mineralization also were specified using geochemical techniques, such as X-Ray Diffraction (XRD) analysis, trace-element, and fluid-inclusion analysis. Finally, preliminary conclusions were derived about possible mineralization, the type (high or low sulfidation), and the extent of mineralization, by combining the structural information with geochemical information.

  14. GIS-based Geospatial Infrastructure of Water Resource Assessment for Supporting Oil Shale Development in Piceance Basin of Northwestern Colorado

    SciTech Connect

    Zhou, Wei; Minnick, Matthew D; Mattson, Earl D; Geza, Mengistu; Murray, Kyle E.

    2015-04-01

    encountered many technical challenging and hasn't been done in the past for any oil shale basin. The database built during this study remains valuable for any other future studies involving oil shale and water resource management in the Piceance Basin. The methodology applied in the development of the GIS based Geospatial Infrastructure can be readily adapted for other professionals to develop database structure for other similar basins.

  15. NREL Biomethane GIS Data

    DOE Data Explorer

    Milbrandt, Anelia

    2016-06-15

    This dataset contains information about the biomass resources generated by county in the United States. It includes the following feedstock categories: crop residues, forest residues, primary mill residues, secondary mill residues, and urban wood waste. The estimates are based on county-level statistics and/or point-source data gathered from the U.S. Department of Agriculture (USDA), USDA Forest Service, EPA and other organizations, which are further processed using relevant assumptions and conversions.

  16. Site-Controlled Growth of Single InP QDs

    SciTech Connect

    Vlasov, A. S. Mintairov, A. M.; Kalyuzhnyy, N. A.; Mintairov, S. A.; Salii, R. A.; Denisyuk, A. I.; Babunts, R. A.

    2015-08-15

    The MOVPE growth of InP/GaInP quantum dots (QDs) on GaAs substrate “defects” formed by a focused beam of Ga{sup +} ions is studied. It is shown that ordered arrays of QDs with a density of 0.25 (μm){sup −2} can be obtained in the InP/GaInP system. It is demonstrated that effective luminescence can be obtained by using two QD sheets separated by a GaAs/GaInP buffer layer.

  17. Dual-wavelength InP quantum dot lasers

    SciTech Connect

    Shutts, S.; Smowton, P. M.; Krysa, A. B.

    2014-06-16

    We have demonstrated a two-section dual-wavelength diode laser incorporating distributed Bragg reflectors, with a peak-wavelength separation of 62.5?nm at 300?K. Each lasing wavelength has a different temperature dependence, providing a difference-tuning of 0.11?nm/K. We discuss the mechanisms governing the light output of the two competing modes and explain how the short wavelength can be relatively insensitive to output changes at the longer wavelength. Starting from an initial condition when the output at both wavelengths are equal, a 500% increase in the long wavelength output causes the short wavelength output to fall by only 6%.

  18. Photoluminescence Imaging Characterization of Thin-Film InP ...

    Office of Scientific and Technical Information (OSTI)

    Bulk carrier lifetime may be as long as 35 ns as measured by u-PCD, which can be less sensitive to surface recombination. Authors: Johnston, Steve ; Allende Motz, Alyssa ; Moore, ...

  19. Application of Spatial Data Modeling and Geographical Information Systems (GIS) for Identification of Potential Siting Options for Various Electrical Generation Sources

    SciTech Connect

    Mays, Gary T; Belles, Randy; Blevins, Brandon R; Hadley, Stanton W; Harrison, Thomas J; Jochem, Warren C; Neish, Bradley S; Omitaomu, Olufemi A; Rose, Amy N

    2012-05-01

    Oak Ridge National Laboratory (ORNL) initiated an internal National Electric Generation Siting Study, which is an ongoing multiphase study addressing several key questions related to our national electrical energy supply. This effort has led to the development of a tool, OR-SAGE (Oak Ridge Siting Analysis for power Generation Expansion), to support siting evaluations. The objective in developing OR-SAGE was to use industry-accepted approaches and/or develop appropriate criteria for screening sites and employ an array of Geographic Information Systems (GIS) data sources at ORNL to identify candidate areas for a power generation technology application. The initial phase of the study examined nuclear power generation. These early nuclear phase results were shared with staff from the Electric Power Research Institute (EPRI), which formed the genesis and support for an expansion of the work to several other power generation forms, including advanced coal with carbon capture and storage (CCS), solar, and compressed air energy storage (CAES). Wind generation was not included in this scope of work for EPRI. The OR-SAGE tool is essentially a dynamic visualization database. The results shown in this report represent a single static set of results using a specific set of input parameters. In this case, the GIS input parameters were optimized to support an economic study conducted by EPRI. A single set of individual results should not be construed as an ultimate energy solution, since US energy policy is very complex. However, the strength of the OR-SAGE tool is that numerous alternative scenarios can be quickly generated to provide additional insight into electrical generation or other GIS-based applications. The screening process divides the contiguous United States into 100 x 100 m (1-hectare) squares (cells), applying successive power generation-appropriate site selection and evaluation criteria (SSEC) to each cell. There are just under 700 million cells representing the

  20. Application of satellite and GIS technologies for land-cover and land-use mapping at the rural-urban fringe - A case study

    SciTech Connect

    Treitz, P.M.; Howarth, P.J.; Gong, Peng )

    1992-04-01

    SPOT HRV multispectral and panchromatic data were recorded and coregistered for a portion of the rural-urban fringe of Toronto, Canada. A two-stage digital analysis algorithm incorporating a spectral-class frequency-based contextual classification of eight land-cover and land-use classes resulted in an overall Kappa coefficient of 82.2 percent for training-area data and a Kappa coefficient of 70.3 percent for test-area data. A matrix-overlay analysis was then performed within the geographic information system (GIS) to combine the land-cover and land-use classes generated from the SPOT digital classification with zoning information for the area. The map that was produced has an estimated interpretation accuracy of 78 percent. Global Positioning System (GPS) data provided a positional reference for new road networks. These networks, in addition to the new land-cover and land-use map derived from the SPOT HRV data, provide an up-to-date synthesis of change conditions in the area. 51 refs.

  1. Using Arc/Info GIS to help implement the National Pollutant Discharge Elimination System (NPDES) stormwater permit for Los Angeles County

    SciTech Connect

    Levine, D.A.; Pace, P.J.; Woods, J.A.; DePoto, W.

    1997-06-01

    One of Los Angeles County Department of Public Works` many responsibilities is to manage non-point pollution that enters the storm drain network within Los Angeles County. The management of this non-point source pollution is mandated by the NPDES guidelines under the Federal Clean Water Act. These guidelines require the County to monitor the drainage network and the storm water and urban runoff flowing through it. The County covers over 3,117 square miles, with the NPDES Permit covering over 3,100 square miles and over 2500 miles of storm drains. A proposed solution to monitor and manage this vast geographic area is centered upon an Arc/Info GIS. Some of the many concerns which need to be addressed include the administration and evaluation of Best Management Practices (BMP`s), storm drain inspection for illegal connections and illicit discharges, and pollutant load assessment and modeling. The storm drain network and other coverages will be related to external data bases currently used for facility management and planning. This system would be used for query purposes to perform spatial modeling and {open_quotes}what if{close_quotes} scenarios needed to create maps and reports required by the permit and to evaluate various BMP implementation strategies.

  2. A GIS COST MODEL TO ASSESS THE AVAILABILITY OF FRESHWATER, SEAWATER, AND SALINE GROUNDWATER FOR ALGAL BIOFUEL PRODUCTION IN THE UNITED STATES

    SciTech Connect

    Venteris, Erik R.; Skaggs, Richard; Coleman, Andre M.; Wigmosta, Mark S.

    2013-03-15

    A key advantage of using microalgae for biofuel production is the ability of some algal strains to thrive in waters unsuitable for conventional crop irrigation such as saline groundwater or seawater. Nonetheless, the availability of sustainable water supplies will provide significant challenges for scale-up and development of algal biofuels. We conduct a limited techno-economic assessment based on the availability of freshwater, saline groundwater, and seawater for use in open pond algae cultivation systems. We explore water issues through GIS-based models of algae biofuel production, freshwater supply, and cost models for supplying seawater and saline groundwater. We estimate that combined, within the coterminous US these resources can support production on the order of 9.46E+7 m3 yr-1 (25 billion gallons yr-1) of renewable biodiesel. Achievement of larger targets requires the utilization of less water efficient sites and relatively expensive saline waters. Geographically, water availability is most favorable for the coast of the Gulf of Mexico and Florida peninsula, where evaporation relative to precipitation is moderate and various saline waters are economically available. As a whole, barren and scrub lands of the southwestern US have limited freshwater supplies so accurate assessment of alternative waters is critical.

  3. GIS-Based Infrastructure Modeling

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation by NREL's Keith Parks at the 2010 - 2025 Scenario Analysis for Hydrogen Fuel Cell Vehicles and Infrastructure Meeting on August 9 - 10, 2006 in Washington, D.C.

  4. Gate tunable monolayer MoS{sub 2}/InP heterostructure solar cells...

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Language: English Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; EFFICIENCY; ELECTRIC POTENTIAL; FERMI LEVEL; HETEROJUNCTIONS; ...

  5. Bandgap Engineering of InP QDs Through Shell Thickness and Composition...

    Office of Scientific and Technical Information (OSTI)

    Language: English Subject: 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; COATINGS; INDIUM PHOSPHIDES; ...

  6. Surface Chemistry of GaP(001) and InP(001) in Contact with Water...

    Office of Scientific and Technical Information (OSTI)

    DOE Contract Number: W-7405-ENG-48 Resource Type: Journal Article Resource Relation: Journal Name: Journal of Physical Chemistry C, vol. 118, no. 2, December 20, 2013, pp. 1062 ...

  7. Bandgap Engineering of InP QDs Through Shell Thickness and Composition...

    Office of Scientific and Technical Information (OSTI)

    Subject: 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; COATINGS; INDIUM PHOSPHIDES; MICROSCOPY; OXIDATION; ...

  8. eGIS_Portal-PIA_WEB.pdf

    Energy Saver

    U.S. Department of Energy's Microgrid Initiative The DOE Smart Grid R&D Program considers microgrids as a key building block for a Smart Grid and has established microgrid R&D as a key focus area. A significant number of R&D needs and challenges have been identified for microgrids during two workshops, with input from more than 170 experts and practitioners representing a broad group of stakeholders. Dan T. Ton and Merrill A. Smith I. Introduction Microgrids have been identified as a

  9. Washington Play Fairway Analysis Geothermal GIS Data

    SciTech Connect

    Corina Forson

    2015-12-15

    This file contains file geodatabases of the Mount St. Helens seismic zone (MSHSZ), Wind River valley (WRV) and Mount Baker (MB) geothermal play-fairway sites in the Washington Cascades. The geodatabases include input data (feature classes) and output rasters (generated from modeling and interpolation) from the geothermal play-fairway in Washington State, USA. These data were gathered and modeled to provide an estimate of the heat and permeability potential within the play-fairways based on: mapped volcanic vents, hot springs and fumaroles, geothermometry, intrusive rocks, temperature-gradient wells, slip tendency, dilation tendency, displacement, displacement gradient, max coulomb shear stress, sigma 3, maximum shear strain rate, and dilational strain rate at 200m and 3 km depth. In addition this file contains layer files for each of the output rasters. For details on the areas of interest please see the 'WA_State_Play_Fairway_Phase_1_Technical_Report' in the download package. This submission also includes a file with the geothermal favorability of the Washington Cascade Range based off of an earlier statewide assessment. Additionally, within this file there are the maximum shear and dilational strain rate rasters for all of Washington State.

  10. GIS keyword | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    Open government map data initiatives in the USA or Canada? IRENA launches global atlas of renewable energy potential more Group members (8) Managers: NickL Recent members:...

  11. GIS Method for Developing Wind Supply Curves

    SciTech Connect

    Kline, D.; Heimiller, D.; Cowlin, S.

    2008-06-01

    This report describes work conducted by the National Renewable Energy Laboratory (NREL) as part of the Wind Technology Partnership (WTP) sponsored by the U.S. Environmental Protection Agency (EPA). This project has developed methods that the National Development and Reform Commission (NDRC) intends to use in the planning and development of China's 30 GW of planned capacity. Because of China's influence within the community of developing countries, the methods and the approaches here may help foster wind development in other countries.

  12. Rapid, Reversible, SolidGas and Solution-Phase Insertion of CO 2 into InP Bonds

    DOE PAGES [OSTI]

    Dickie, Diane A.; Barker, Madeline T.; Land, Michael A.; Hughes, Kira E.; Clyburne, Jason A. C.; Kemp, Richard A.

    2015-11-17

    The P,P-chelated heteroleptic complex bis[bis(diisopropylphosphino)amido]indium chloride [(i-Pr2P)2N]2InCl was prepared in high yield by treating InCl3 with 2 equiv of (i-Pr2P)2NLi in Et2O/tetrahydrofuran solution. Samples of [(i-Pr2P)2N]2InCl in a pentane slurry, a CH2Cl2 solution, or in the solid state were exposed to CO2, resulting in the insertion of CO2 into two of the four MP bonds to produce [O2CP(i-Pr2)NP(i-Pr2)]2InCl in each case. These compounds were characterized by multinuclear NMR and IR spectroscopy, as well as single-crystal X-ray diffraction. ReactIR solution studies show that the reaction is complete in less than 1 min at room temperature in solution and in less thanmore2 h in the solidgas reaction. The CO2 complex is stable up to at least 60 C under vacuum, but the starting material is regenerated with concomitant loss of carbon dioxide upon heating above 75 C. Furthermore, the compound [(i-Pr2P)2N]2InCl also reacts with CS2 to give a complicated mixture of products, one of which was identified as the CS2 cleavage product [S=P(i-Pr2)NP(i-Pr2)]2InCl]2(?-Cl)[?-(i-Pr2P)2N)].less

  13. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Southern Great Plains Ice Nuclei Characterization Experiment Final Campaign Summary ... Additional offline INP analyses are underway to extend the characterization of INP to ...

  14. ARM - Field Campaign - ARM Cloud Aerosol Precipitation Experiment...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    a distinctly different INP population in comparison to long range transported desert or urban and regional land-sourced INP, and that the layering of marine within other...

  15. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Geothermal Maps

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Geothermal Prospector Start exploring U.S. geothermal resources with an easy-to-use map by selecting dataset layers that are NGDS compatible. Bookmark and Share Geothermal Maps These maps show existing and developing geothermal power plants, geothermal resource potential estimates, and other information related to geothermal power. They are updated as information becomes available, but may not represent all available geothermal data. Resource Potential The geothermal resource potential map (JPG

  16. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Publications

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Publications Some of the following documents are available as Adobe Acrobat PDFs. Download Adobe Reader. Click anywhere on the document title to see a summary or click on the PDF icon to see full text. PDF 3.5 MB Cassard, H.; Denholm, P.; Ong, S. (2011). Break-Even Cost for Residential Solar Water Heating in the United States: Key Drivers and Sensitivities. 54 pp.; NREL Report No. TP-6A20-48986. PDF 5.6 MB Dahle, D.; Elliott, D.; Heimiller, D.; Mehos, M.; Robichaud, R.; Schwartz, M.; Stafford,

  17. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Renewable Energy

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Economic Potential Economic Potential Types of Renewable Generation Potential An image of a overlapping circles labelled Resource, Technical, Economic, and Market Potential that include the key assumptions for each segment on a bullet list inside it. Enlarge image The report Estimating Renewable Energy Economic Potential in the United States: Methodology and Initial Results describes a geospatial analysis method to estimate the economic potential of several renewable resources available for

  18. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Solar Maps

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    MapSearch Searching for maps has never been easier. A screen capture of the MapSearch Map view option Solar Maps Solar maps provide monthly average daily total solar resource information on grid cells. The insolation values represent the resource available to a flat plate collector, such as a photovoltaic panel, oriented due south at an angle from horizontal to equal to the latitude of the collector location. This is typical practice for PV system installation, although other orientations are

  19. Integrated: Geospatial Toolkit GIS data for Oaxaca from NREL...

    OpenEI (Open Energy Information) [EERE & EIA]

    show good potential for renewable energy projects. The toolkit displays renewable energy data along with information about the geography, location of population centers,...

  20. Integrated: Geospatial Toolkit GIS data for India from NREL ...

    OpenEI (Open Energy Information) [EERE & EIA]

    show good potential for renewable energy projects. The toolkit displays renewable energy data along with information about the geography, location of population centers,...

  1. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Hydrogen Data

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Biomass Geospatial Toolkits Geothermal Hydrogen International Marine & Hydrokinetic Solar Wind Data Visualization & Geospatial Tools Geospatial Team Publications Contact Us...

  2. Geologic Map and GIS Data for the Tuscarora Geothermal Area

    DOE Data Explorer

    Faulds, James E.

    2013-12-31

    - 3D model constructed with EarthVision using geologic map data, cross?sections, drill?hole data, and geophysics (model not in the ESRI geodatabase).

  3. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Hydrogen Maps

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    It considers hydrogen production using wind and solar electrolysis as well as gasification and steam methane reforming methods for converting biomass to hydrogen. Reference: ...

  4. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Solar Data

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Data 10-Kilometer This data provides monthly average and annual average daily total solar resource averaged over surface cells of 0.1 degrees in both latitude and longitude,...

  5. NREL: Dynamic Maps, GIS Data, and Analysis Tools - International...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Bhutan.htm Central America Wind 50m Resolution (includes Belize, Cayman Islands, El Salvador, Guatemala, Honduras and Nicaragua (Zip 2.4 MB) 02192009 Central America.htm Chile...

  6. eGIS Portal PIA, Bonneville Power Administration | Department...

    Energy Saver

    Adminstration Ethics Helpline Integrated Safety Management Workshop Registration, PIA, Idaho National Laboratory Occupational Medicine - Assistant PIA, Idaho National Laboratory...

  7. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Federal Energy...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The Federal Energy Management Program (FEMP) teamed with Geospatial Analysis staff at NREL ... Data Resources Data Visualization & Geospatial Tools Geospatial Data Science Team ...

  8. Evaluation of OGC Standards for Use in LLNL GIS

    SciTech Connect

    Walker, H; Chou, R M; Chubb, K K; Schek, J L

    2006-06-23

    Over the summer of 2005, the Lawrence Livermore National Laboratory (LLNL) Computer Applications and Research Department conducted a small project that examined whether Open Geospatial Consortium (OGC) standards might be useful in meeting program mission requirements more effectively. OGC standards are intended to facilitate interoperability between geospatial processing systems to lower development costs and to avoid duplication of effort and vendor lock-in. Some OGC standards appear to be gaining traction in the geospatial data community, the Federal government, Department of Energy (DOE) and Department of Homeland Security (DHS) and so an evaluation was deemed appropriate.

  9. NM WAIDS: A PRODUCED WATER QUALITY AND INFRASTRUCTURE GIS DATABASE...

    Office of Scientific and Technical Information (OSTI)

    data, and corrosion information, (2) a web site capable of displaying produced water ... New Mexico. (2) Creation of a web-based data entry system for the water quality database. ...

  10. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Biomass Data

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    for maps has never been easier. A screen capture of the MapSearch Map view option Biomass Data These datasets represent the biomass resources available in the United States by...

  11. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Marine & Hydrokinet...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    transfer of wave energy along wave crests, which enables densities within a few kilometers of a linear array, even for fixed terminator devices. The total available energy...

  12. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Geothermal...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Geothermal Prospector Start exploring U.S. geothermal resources with an easy-to-use map by selecting dataset layers that are NGDS compatible. Bookmark and Share Geothermal Data...

  13. Placing power linres : GIS helps site energy corridors.

    SciTech Connect

    Kuiper, J. A.; Cantwell, B.; Hlohowskyj, I.; Moore, H. R.

    2011-08-01

    Turn the lights on when you enter a room, then turn the lights off when you leave. Most of us repeat this sequence many times each day, and never give it another thought. But that seemingly simple light switch on the wall connects us to one of the most complex systems in the world: the electrical grid. Most of the United States is served by a highly reliable and adequate supply of electrical power, which is distributed through a grid of thousands of miles of electricity-transmission lines. However, as the electricity-supply infrastructure ages and consumer demand for electricity grows, the capacity to deliver electrical power hasn't kept pace with demand, and upgrading the electrical-transmission grid has become a more pressing need. From 1988-1998, demand for transmission grew by 30 percent while transmission grew by only 15 percent. From 1999-2009, demand grew by 20 percent and transmission by only 3 percent Despite a short-term decline related to the economic downturn and improved efficiency, U.S. energy consumption is expected to increase by 14 percent between 2008 and 2035. This growth will drive the need to develop viable routes for new transmission lines. Because transmission lines extend over large distances, they typically cross many federal, tribal, state, local and private land jurisdictions, each with a complex and varying set of siting issues and land-management practices. And as the existing grid needs improvement to meet growing demand, the U.S. is rapidly developing renewable energy sources, particularly solar and wind energy, often in areas far removed from existing electricity-transmission infrastructure and energy-consumption areas.

  14. Transmission/Resource Library/GIS Tools | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    wildlife connectivity areas in Montana. The aim of the mapping system is to consider fish, wildlife, and recreational resources earlier on when planning for future development....

  15. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Wind Data

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    resource data at various hub heights and spatial resolutions for both land-based and offshore data including the data used in the maps located at the WINDExchange and U.S. DOE...

  16. Regional Geology: GIS Database for Alternative Host Rocks and...

    Energy.gov [DOE] (indexed site)

    RegGeolGISDatabaseDevelM2FT14LA0814012REV (24.44 MB) More Documents & Publications Database for Regional Geology, Phase 1- A Tool for informing Regional Evaluations of Alternative ...

  17. DOE special projects: PLACE3S GIS MODULE [Final report

    SciTech Connect

    2002-07-31

    PLACE3S (PLAnning for Community Energy, Economic and Environmental Sustainability) energy option matching module.

  18. Geologic Map and GIS Data for the Patua Geothermal Area

    DOE Data Explorer

    Faulds, James E.

    2011-10-31

    Patua—ESRI Geodatabase (ArcGeology v1.3): - Contains all the geologic map data, including faults, contacts, folds, veins, dikes, unit polygons, and attitudes of strata and faults. - List of stratigraphic units. - Locations of geothermal wells. - Locations of 40Ar/39Ar and tephra samples.

  19. Geologic Map and GIS Data for the Tuscarora Geothermal Area

    DOE Data Explorer

    Faulds, James E.

    2013-12-31

    Tuscarora—ESRI Geodatabase (ArcGeology v1.3): - Contains all the geologic map data, including faults, contacts, folds, unit polygons, and attitudes of strata and faults. - List of stratigraphic units and stratigraphic correlation diagram. - Detailed unit descriptions of stratigraphic units. - Five cross‐sections. - Locations of production, injection, and monitor wells. - 3D model constructed with EarthVision using geologic map data, cross‐sections, drill‐hole data, and geophysics (model not in the ESRI geodatabase).

  20. Geologic Map and GIS Data for the Wabuska Geothermal Area

    DOE Data Explorer

    Hinz, Nick

    2013-09-30

    Wabuska—ESRI geodatabase (ArcGeology v1.3): - Contains all the geologic map data, including faults, contacts, folds, veins, dikes, unit polygons, and attitudes of strata. - List of stratigraphic units and stratigraphic correlation diagram. - One cross‐section.

  1. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Geothermal Prospector

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Geothermal Prospector Start exploring U.S. geothermal resources with an easy-to-use map by selecting data layers that are NGDS compatible. Bookmark and Share Geothermal Prospector The Geothermal Prospector mapping tool provides an excellent data resource for visual exploration of geothermal resources using the tools and datasets required to produce and disseminate both exploration gap analysis and Enhanced Geothermal System (EGS) planning and analysis. In 2010, NREL developed Geothermal

  2. 06554_GreenRiverGIS | netl.doe.gov

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Background Abundant oil shale deposits are found throughout the midwestern and eastern United States; however, oil shale deposits in the Green River Formation in northwestern ...

  3. Insulation characteristics of GIS spacer for very fast transient overvoltage

    SciTech Connect

    Okabe, S.; Koto, M.; Endo, F.; Kobayashi, K.

    1996-01-01

    V-t characteristics of spacer surfaces for VFT were investigated under particle contaminated conditions. V-t characteristics for VFT were measured with the particle length, oscillation frequency, amplitude, and damping factor of VFT waveform as parameters. Differences in V-t characteristics for VFT due to variation of oscillation frequency, amplitude, and damping factor were small. Further, they were compared with V-t characteristics for lightning impulse. The dielectric strength of spacer surfaces for VFT was found to be at least equivalent to the dielectric strength for lightning impulse.

  4. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Maps

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Geothermal Maps showing currently developed and planned geothermal power plant projects, as well as favorable resources for enhanced geothermal systems and identified hydrothermal ...

  5. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Data Resources

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Boundary Files Political InfrastructureUtility Federal Lands Parks Census Data Infrastructure Natural Geographic Features Renewable Energy Resources Potential carbon sequestration ...

  6. Electronic structure, morphology and emission polarization of enhanced symmetry InAs quantum-dot-like structures grown on InP substrates by molecular beam epitaxy

    SciTech Connect

    Mary?ski, A.; S?k, G.; Musia?, A.; Andrzejewski, J.; Misiewicz, J.; Gilfert, C.; Reithmaier, J. P.; Capua, A.; Karni, O.; Gready, D.; Eisenstein, G.; Atiya, G.; Kaplan, W. D.; Klling, S.

    2013-09-07

    The optical and structural properties of a new kind of InAs/InGaAlAs/InP quantum dot (QD)-like objects grown by molecular beam epitaxy have been investigated. These nanostructures were found to have significantly more symmetrical shapes compared to the commonly obtained dash-like geometries typical of this material system. The enhanced symmetry has been achieved due to the use of an As{sub 2} source and the consequent shorter migration length of the indium atoms. Structural studies based on a combination of scanning transmission electron microscopy (STEM) and atom probe tomography (APT) provided detailed information on both the structure and composition distribution within an individual nanostructure. However, it was not possible to determine the lateral aspect ratio from STEM or APT. To verify the in-plane geometry, electronic structure calculations, including the energy levels and transition oscillator strength for the QDs have been performed using an eight-band kp model and realistic system parameters. The results of calculations were compared to measured polarization-resolved photoluminescence data. On the basis of measured degree of linear polarization of the surface emission, the in-plane shape of the QDs has been assessed proving a substantial increase in lateral symmetry. This results in quantum-dot rather than quantum-dash like properties, consistent with expectations based on the growth conditions and the structural data.

  7. Quantum-Size Effects on the Pressure-Induced Direct-to-Indirect Band-Gap Transition in InP Quantum Dots

    SciTech Connect

    Fu, H.; Zunger, A.

    1998-06-01

    We predict that the difference in quantum confinement energies of {Gamma} -like and X -like conduction states in a covalent quantum dot will cause the direct-to-indirect transition to occur at substantially lower pressure than in the bulk material. Furthermore, the first-order transition in the bulk is predicted to become, for certain dot sizes, a second-order transition. Measurements of the {open_quotes}anticrossing gap{close_quotes} could thus be used to obtain unique information on the {Gamma}-X- L intervalley coupling, predicted here to be surprisingly large (50{endash}100thinspthinspmeV). {copyright} {ital 1998} {ital The American Physical Society}

  8. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Data Visualization &

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Geospatial Tools MapSearch Searching for maps has never been easier. A screen capture of the MapSearch Map view option Bookmark and Share Data Visualization & Geospatial Tools NREL's Geospatial Data Science Team has developed tools that allow users to apply these data. These tools help determine things such as how much electricity can be produced from solar systems on a house or what renewable resources are available in a specific areas. Please visit http://maps.nrel.gov/ for the most

  9. NREL: Dynamic Maps, GIS Data, and Analysis Tools - MapSearch

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Bookmark and Share MapSearch MapSearch Logo is a computer monitor with a magnifying glass suspended in the air before it. Use our MapSearch tool to easily search our collection of maps created by the Geospatial Data Science Team. Please use the search box and the filters on the left of the screen to limit results. The tool is designed to work with NREL's OpenEI so users will have one site to search and view NREL created maps. If you have any feedback or comments on this tool, contact the

  10. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Marine & Hydrokinetic

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Maps MapSearch Searching for maps has never been easier. A screen capture of the MapSearch Map view option Marine & Hydrokinetic Maps Hydropower already provides 6-7% of the nation's electricity, and the ocean represents a largely untapped renewable energy resource with potential to provide clean electricity to coastal communities and cities across the United States. There is significant opportunity for water power to provide large amounts of clean and renewable power. The Water Power

  11. Potential Release Site Sediment Concentrations Correlated to Storm Water Station Runoff through GIS Modeling

    SciTech Connect

    C.T. McLean

    2005-06-01

    This research examined the relationship between sediment sample data taken at Potential Release Sites (PRSs) and storm water samples taken at selected sites in and around Los Alamos National Laboratory (LANL). The PRSs had been evaluated for erosion potential and a matrix scoring system implemented. It was assumed that there would be a stronger relationship between the high erosion PRSs and the storm water samples. To establish the relationship, the research was broken into two areas. The first area was raster-based modeling, and the second area was data analysis utilizing the raster based modeling results and the sediment and storm water sample results. Two geodatabases were created utilizing raster modeling functions and the Arc Hydro program. The geodatabase created using only Arc Hydro functions contains very fine catchment drainage areas in association with the geometric network and can be used for future contaminant tracking. The second geodatabase contains sub-watersheds for all storm water stations used in the study along with a geometric network. The second area of the study focused on data analysis. The analytical sediment data table was joined to the PRSs spatial data in ArcMap. All PRSs and PRSs with high erosion potential were joined separately to create two datasets for each of 14 analytes. Only the PRSs above the background value were retained. The storm water station spatial data were joined to the table of analyte values that were either greater than the National Pollutant Discharge Elimination System (NPDES) Multi-Sector General Permit (MSGP) benchmark value, or the Department of Energy (DOE) Drinking Water Defined Contribution Guideline (DWDCG). Only the storm water stations were retained that had sample values greater than the NPDES MSGP benchmark value or the DOE DWDCG. Separate maps were created for each analyte showing the sub-watersheds, the PRSs over background, and the storm water stations greater than the NPDES MSGP benchmark value or the DOE DWDCG. Tables were then created for each analyte that listed the PRSs average value by storm water station allowing a tabular view of the mapped data. The final table that was created listed the number of high erosion PRSs and regular PRSs over background values that were contained in each watershed. An overall relationship between the high erosion PRSs or the regular PRSs and the storm water stations was not identified through the methods used in this research. However, the Arc Hydro data models created for this analysis were used to track possible sources of contamination found through sampling at the storm water gaging stations. This geometric network tracing was used to identify possible relationships between the storm water stations and the PRSs. The methods outlined for the geometric network tracing could be used to find other relationships between the sites. A cursory statistical analysis was performed which could be expanded and applied to the data sets generated during this research to establish a broader relationship between the PRSs and storm water stations.

  12. Improving Rangeland Monitoring and Assessment: Integrating Remote Sensing, GIS, and Unmanned Aerial Vehicle Systems

    SciTech Connect

    Robert Paul Breckenridge

    2007-05-01

    Creeping environmental changes are impacting some of the largest remaining intact parcels of sagebrush steppe ecosystems in the western United States, creating major problems for land managers. The Idaho National Laboratory (INL), located in southeastern Idaho, is part of the sagebrush steppe ecosystem, one of the largest ecosystems on the continent. Scientists at the INL and the University of Idaho have integrated existing field and remotely sensed data with geographic information systems technology to analyze how recent fires on the INL have influenced the current distribution of terrestrial vegetation. Three vegetation mapping and classification systems were used to evaluate the changes in vegetation caused by fires between 1994 and 2003. Approximately 24% of the sagebrush steppe community on the INL was altered by fire, mostly over a 5-year period. There were notable differences between methods, especially for juniper woodland and grasslands. The Anderson system (Anderson et al. 1996) was superior for representing the landscape because it includes playa/bare ground/disturbed area and sagebrush steppe on lava as vegetation categories. This study found that assessing existing data sets is useful for quantifying fire impacts and should be helpful in future fire and land use planning. The evaluation identified that data from remote sensing technologies is not currently of sufficient quality to assess the percentage of cover. To fill this need, an approach was designed using both helicopter and fixed wing unmanned aerial vehicles (UAVs) and image processing software to evaluate six cover types on field plots located on the INL. The helicopter UAV provided the best system compared against field sampling, but is more dangerous and has spatial coverage limitations. It was reasonably accurate for dead shrubs and was very good in assessing percentage of bare ground, litter and grasses; accuracy for litter and shrubs is questionable. The fixed wing system proved to be feasible and can collect imagery for very large areas in a short period of time. It was accurate for bare ground and grasses. Both UAV systems have limitations, but these will be reduced as the technology advances. In both cases, the UAV systems collected data at a much faster rate than possible on the ground. The study concluded that improvements in automating the image processing efforts would greatly improve use of the technology. In the near future, UAV technology may revolutionize rangeland monitoring in the same way Global Positioning Systems have affected navigation while conducting field activities.

  13. Integrating multisource imagery and GIS analysis for mapping Bermuda`s benthic habitats

    SciTech Connect

    Vierros, M.K.

    1997-06-01

    Bermuda is a group of isolated oceanic situated in the northwest Atlantic Ocean and surrounded by the Sargasso Sea. Bermuda possesses the northernmost coral reefs and mangroves in the Atlantic Ocean, and because of its high population density, both the terrestrial and marine environments are under intense human pressure. Although a long record of scientific research exists, this study is the first attempt to comprehensively map the area`s benthic habitats, despite the need for such a map for resource assessment and management purposes. Multi-source and multi-date imagery were used for producing the habitat map due to lack of a complete up-to-date image. Classifications were performed with SPOT data, and the results verified from recent aerial photography and current aerial video, along with extensive ground truthing. Stratification of the image into regions prior to classification reduced the confusing effects of varying water depth. Classification accuracy in shallow areas was increased by derivation of a texture pseudo-channel, while bathymetry was used as a classification tool in deeper areas, where local patterns of zonation were well known. Because of seasonal variation in extent of seagrasses, a classification scheme based on density could not be used. Instead, a set of classes based on the seagrass area`s exposure to the open ocean were developed. The resulting habitat map is currently being assessed for accuracy with promising preliminary results, indicating its usefulness as a basis for future resource assessment studies.

  14. U.S. Renewable Energy Technical Potentials. A GIS-Based Analysis

    SciTech Connect

    Lopez, Anthony; Roberts, Billy; Heimiller, Donna; Blair, Nate; Porro, Gian

    2012-07-01

    This report presents the state-level results of a spatial analysis effort calculating energy technical potential, reported in square kilometers of available land, megawatts of capacity, and gigawatt-hours of generation, for six different renewable technologies. For this analysis, the system specific power density (or equivalent), efficiency (capacity factor), and land-use constraints were identified for each technology using independent research, published research, and professional contacts. This report also presents technical potential findings from previous reports.

  15. U.S. Renewable Energy Technical Potentials: A GIS-Based Analysis

    SciTech Connect

    Lopez, A.; Roberts, B.; Heimiller, D.; Blair, N.; Porro, G.

    2012-07-01

    This report presents the state-level results of a spatial analysis effort calculating energy technical potential, reported in square kilometers of available land, megawatts of capacity, and gigawatt-hours of generation, for six different renewable technologies. For this analysis, the system specific power density (or equivalent), efficiency (capacity factor), and land-use constraints were identified for each technology using independent research, published research, and professional contacts. This report also presents technical potential findings from previous reports.

  16. U.S. Renewable Energy Technical Potentials: A GIS-Based Analysis

    Energy.gov [DOE]

    The National Renewable Energy Laboratory (NREL) routinely estimates the technical potential of specific renewable electricity generation technologies. These are technology-specific estimates of energy generation potential based on renewable resource availability and quality, technical system performance, topographic limitations, environmental, and land-use constraints only. The estimates do not consider (in most cases) economic or market constraints, and therefore do not represent a level of renewable generation that might actually be deployed. Technical potential estimates for six different renewable energy technologies were calculated by NREL, and methods and results for several other renewable technologies from previously published reports are also presented.

  17. Geologic Map and Cross Sections of the McGinness Hills Geothermal Area - GIS Data

    SciTech Connect

    Faulds, James E.

    2013-12-31

    Geologic map data in shapefile format that includes faults, unit contacts, unit polygons, attitudes of strata and faults, and surficial geothermal features. 5 cross‐sections in Adobe Illustrator format. Comprehensive catalogue of drill‐hole data in spreadsheet, shapefile, and Geosoft database formats. Includes XYZ locations of well heads, year drilled, type of well, operator, total depths, well path data (deviations), lithology logs, and temperature data. 3D model constructed with EarthVision using geologic map data, cross‐sections, drill‐hole data, and geophysics.

  18. Structural Data for the Columbus Salt Marsh Geothermal Area - GIS Data

    SciTech Connect

    Faulds, James E.

    2011-12-31

    Shapefiles and spreadsheets of structural data, including attitudes of faults and strata and slip orientations of faults. - Detailed geologic mapping of ~30 km2 was completed in the vicinity of the Columbus Marsh geothermal field to obtain critical structural data that would elucidate the structural controls of this field. - Documenting E‐ to ENE‐striking left lateral faults and N‐ to NNE‐striking normal faults. - Some faults cut Quaternary basalts. - This field appears to occupy a displacement transfer zone near the eastern end of a system of left‐lateral faults. ENE‐striking sinistral faults diffuse into a system of N‐ to NNE‐striking normal faults within the displacement transfer zone. - Columbus Marsh therefore corresponds to an area of enhanced extension and contains a nexus of fault intersections, both conducive for geothermal activity.

  19. Geologic Map of the Neal Hot Springs Geothermal Area - GIS Data

    SciTech Connect

    Faulds, James E.

    2013-03-31

    Neal Hot Springs—ESRI Geodatabase (ArcGeology v1.3): - Contains all the geologic map data, including faults, contacts, folds, unit polygons, and attitudes of strata and faults. - List of stratigraphic units and stratigraphic correlation diagram. - Three cross‐sections. - Locations of production, injection, and exploration wells. - Locations of 40Ar/39Ar samples. - Location of XRF geochemical samples. - 3D model constructed with EarthVision using geologic map data, cross‐sections, drill‐hole data, and geophysics (model not in the ESRI geodatabase).

  20. U.S. Renewable Energy Technical Potentials: A GIS-Based Analysis

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Thousand Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 1960's 1.04 1.04 1.05 1970's 1.09 1.15 1.21 1.29 1.43 1.71 1.98 2.35 2.56 2.98 1980's 3.68 4.29 5.17 6.06 6.12 6.12 5.83 5.54 5.47 5.64 1990's 5.80 5.82 5.89 6.16 6.41 6.06 6.34 6.94 6.82 6.69 2000's 7.76 9.63 7.89 9.63 10.75 12.70 13.73 13.08 13.89 12.14 2010's 11.39 11.03 10.65 10.32 10.97 10.38 Thousand Cubic Feet)

    Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1973 NA NA NA NA

  1. http://water.usgs.gov/GIS/metadata/usgswrd/XML/nv_dtw750nv_l...

    National Nuclear Security Administration (NNSA)

    Susan G. Buto Originator: Sienna Smith-Sager PublicationDate: 2006 Title: ... Reference Cited Lopes, T.J., Buto, S.G., Smith, J.L., and Welborn, T.L., 2006, Water-table ...

  2. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Solar Maps Development

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Maps Development - How the Maps Were Made 10km The State University of New York/Albany satellite radiation model was developed by Richard Perez and collaborators at the National Renewable Energy Laboratory and other universities for the U.S. Department of Energy. Specific information about this model can be found in Perez, et al. (2002). This model uses hourly radiance images from geostationary weather satellites, daily snow cover data, and monthly averages of atmospheric water vapor,

  3. Structural Data for the Columbus Salt Marsh Geothermal Area - GIS Data

    DOE Data Explorer

    Faulds, James E.

    - Columbus Marsh therefore corresponds to an area of enhanced extension and contains a nexus of fault intersections, both conducive for geothermal activity.

  4. Geologic Map and Cross Sections of the McGinness Hills Geothermal Area - GIS Data

    DOE Data Explorer

    Faulds, James E.

    2013-12-31

    Geologic map data in shapefile format that includes faults, unit contacts, unit polygons, attitudes of strata and faults, and surficial geothermal features. 5 cross?sections in Adobe Illustrator format. Comprehensive catalogue of drill?hole data in spreadsheet, shapefile, and Geosoft database formats. Includes XYZ locations of well heads, year drilled, type of well, operator, total depths, well path data (deviations), lithology logs, and temperature data. 3D model constructed with EarthVision using geologic map data, cross?sections, drill?hole data, and geophysics.

  5. Structural Data for the Columbus Salt Marsh Geothermal Area - GIS Data

    DOE Data Explorer

    Faulds, James E.

    2011-12-31

    - Columbus Marsh therefore corresponds to an area of enhanced extension and contains a nexus of fault intersections, both conducive for geothermal activity.

  6. Seismic isolation technique for extra tall bushing of GIS using a pendulum type counterweight

    SciTech Connect

    Tsujiuchi, Nobutaka; Koizumi, Takayuki; Tomisawa, Masao; Murase, Seiichi; Yamamoto, Hiroshi

    1995-12-31

    The purpose of the authors` investigation here is to adopt the seismic isolation technique by using a pendulum type counterweight as a new approach for seismic qualification of the extra tall bushing of Gas-Insulated-Substations. It has been definitely shown by the results of numerical simulation of this isolation type bushing that the stress of the lower end of bushing can be effectively reduced to about 50% as compared with non-isolated case.

  7. ACAPEX - Ship-Based Ice Nuclei Collections Field Campaign Report

    Office of Scientific and Technical Information (OSTI)

    (Technical Report) | SciTech Connect ACAPEX - Ship-Based Ice Nuclei Collections Field Campaign Report Citation Details In-Document Search Title: ACAPEX - Ship-Based Ice Nuclei Collections Field Campaign Report Measurements were sought to evaluate a hypotheses that sea-spray-sourced ice-nucleating particles (INPs) are of biological origin and represent a distinctly different INP population in comparison to long-range-transported desert or urban and regional land-sourced INP, and that the

  8. Marine Ice Nuclei Collections - MAGIC (MAGIC-IN) Final Campaign...

    Office of Scientific and Technical Information (OSTI)

    for offline processing to measure ice nucleating particle (INP) number concentrations. ... time of this report, will include single particle analyses of marine boundary layer ...

  9. ACAPEX - Ship-Based Ice Nuclei Collections Field Campaign Report...

    Office of Scientific and Technical Information (OSTI)

    A particular analysis possible with this data set is to examine INP budgets over oceans ... Data set integration is occurring under funding from an Atmospheric System Research (ASR) ...

  10. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... A particular analysis possible with this data set is to examine INP budgets over oceans ... Data set integration is occurring under funding from an Atmospheric System Research (ASR) ...

  11. Health Care (Inpatient) | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Building Types 1 References EIA CBECS Building Types U.S. Energy Information Administration (Oct 2008) Retrieved from "http:en.openei.orgwindex.php?titleHealthCare(Inp...

  12. Marine Ice Nuclei Collections - MAGIC (MAGIC-IN) Final Campaign...

    Office of Scientific and Technical Information (OSTI)

    ... However, even this modest contribution could nevertheless control INP number concentration ... regions of more or less active marine biological activity, as inferred from ...

  13. Southern Great Plains Ice Nuclei Characterization Experiment

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    DISCLAIMER This report was prepared as an account ... attribute the INP activity primarily to soil dust emissions. ... weather and aerosol scenarios has direct application, ...

  14. How can I open .ASC files contained in the following linkhttp...

    OpenEI (Open Energy Information) [EERE & EIA]

    .ASC file format is also compatible with most common GIS software, such as ESRI ArcGIS or Quantum GIS (QGIS). The data will be added to the GIS interface as a raster layer....

  15. GIS INTERNET MAP SERVICE FOR DISPLAYING SELENIUM CONTAMINATION DATA IN THE SOUTHEASTERN IDAHO PHOSPHATE MINING RESOURCE AREA

    SciTech Connect

    Roger Mayes; Sera White; Randy Lee

    2005-04-01

    Selenium is present in waste rock/overburden that is removed during phosphate mining in southeastern Idaho. Waste rock piles or rock used during reclamation can be a source of selenium (and other metals) to streams and vegetation. Some instances (in 1996) of selenium toxicity in grazing sheep and horses caused public health and environmental concerns, leading to Idaho Department of Environmental Quality (DEQ) involvement. The Selenium Information System Project is a collaboration among the DEQ, the United States Forest Service (USFS), the Bureau of Land Management (BLM), the Idaho Mining Association (IMA), Idaho State University (ISU), and the Idaho National Laboratory (INL)2. The Selenium Information System is a centralized data repository for southeastern Idaho selenium data. The data repository combines information that was previously in numerous agency, mining company, and consultants’ databases and web sites. These data include selenium concentrations in soil, water, sediment, vegetation and other environmental media, as well as comprehensive mine information. The Idaho DEQ spearheaded a selenium area-wide investigation through voluntary agreements with the mining companies and interagency participants. The Selenium Information System contains the results of that area-wide investigation, and many other background documents. As studies are conducted and remedial action decisions are made the resulting data and documentation will be stored within the information system. Potential users of the information system are agency officials, students, lawmakers, mining company personnel, teachers, researchers, and the general public. The system, available from a central website, consists of a database that contains the area-wide sampling information and an ESRI ArcIMS map server. The user can easily acquire information pertaining to the area-wide study as well as the final area-wide report. Future work on this project includes creating custom tools to increase the simplicity of the website and increasing the amount of information available from site-specific studies at 15 mines.

  16. EERE PowerPoint 97-2004 Template: Green Version

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    & integration * Data organized into ARC GIS layers * Temperature-depth profiles * ... locations of geothermal upwelling *GIS-based investigation * Straightforwardly ...

  17. Neutronic, steady-state, and transient analyses for the Kazakhstan VVR-K reactor with LEU fuel: ANL independent verification results

    SciTech Connect

    Hanan, Nelson A.; Garner, Patrick L.

    2015-08-01

    Calculations have been performed for steady state and postulated transients in the VVR-K reactor at the Institute of Nuclear Physics (INP), Kazakhstan. (The reactor designation in Cyrillic is BBP-K; transliterating characters to English gives VVR-K but translating words gives WWR-K.) These calculations have been performed at the request of staff of the INP who are performing similar calculations. The selection of the transients considered started during working meetings and email correspondence between Argonne National Laboratory (ANL) and INP staff. In the end the transient were defined by the INP staff. Calculations were performed for the fresh low-enriched uranium (LEU) core and for four subsequent cores as beryllium is added to maintain critically during the first 15 cycles. These calculations have been performed independently from those being performed by INP and serve as one step in the verification process.

  18. Red light-emitting diodes based on InP/GaP quantum dots

    SciTech Connect

    Hatami, F.; Lordi, V.; Harris, J.S.; Kostial, H.; Masselink, W.T.

    2005-05-01

    The growth, fabrication, and device characterization of InP quantum-dot light-emitting diodes based on GaP are described and discussed. The diode structures are grown on gallium phosphide substrates using gas-source molecular-beam epitaxy and the active region of the diode consists of self-assembled InP quantum dots embedded in a GaP matrix. Red electroluminescence originating from direct band-gap emission from the InP quantum dots is observed at low temperatures.With increasing temperature, however, the emission line shifts to the longer wavelength. The emission light is measured to above room temperature.

  19. Monolithic tandem solar cell

    DOEpatents

    Wanlass, M.W.

    1994-06-21

    A single-crystal, monolithic, tandem, photovoltaic solar cell is described which includes (a) an InP substrate having upper and lower surfaces, (b) a first photoactive subcell on the upper surface of the InP substrate, (c) a second photoactive subcell on the first subcell; and (d) an optically transparent prismatic cover layer over the second subcell. The first photoactive subcell is GaInAsP of defined composition. The second subcell is InP. The two subcells are lattice matched. 9 figs.

  20. Monolithic tandem solar cell

    SciTech Connect

    Wanlass, Mark W.

    1991-01-01

    A single-crystal, monolithic, tandem, photovoltaic solar cell is described which includes (a) an InP substrate having upper and lower surfaces, (b) a first photoactive subcell on the upper surface of the InP substrate, and (c) a second photoactive subcell on the first subcell. The first photoactive subcell is GaInAsP of defined composition. The second subcell is InP. The two subcells are lattice matched. The solar cell can be provided as a two-terminal device or a three-terminal device.

  1. Monolithic tandem solar cell

    DOEpatents

    Wanlass, Mark W. (Golden, CO)

    1994-01-01

    A single-crystal, monolithic, tandem, photovoltaic solar cell is described which includes (a) an InP substrate having upper and lower surfaces, (b) a first photoactive subcell on the upper surface of the InP substrate, (c) a second photoactive subcell on the first subcell; and (d) an optically transparent prismatic cover layer over the second subcell. The first photoactive subcell is GaInAsP of defined composition. The second subcell is InP. The two subcells are lattice matched.

  2. Comparison of steady-state and transient characteristics of lattice-matched and strained InGaAs-AlGaAs (on GaAs) and InGaAs-AlInAs (on InP) quantum-well lasers

    SciTech Connect

    Lam, Y.; Singh, J. ); Loehr, J.P. )

    1992-05-01

    This paper reports on numerical techniques to study the output spectra and to solve the multimode coupled rate equations including TE and TM propagations for In{sub x}Ga{sub 1{minus}x}As-Al{sub 0.3}Ga{sub 0.7}As and In{sub 0.53+x}Ga{sub 0.47{minus}x}As-Al{sub 0.48}In{sub 0.52}As quantum well lasers. Optical properties are calculated from a 4 {times} 4 k {center dot} p bandstructure and strain effects are included with the deformation potential theory. The authors find that an introduction of 1.4% compressive strain to the quantum well results in roughly 3-4 times improvement in the intrinsic static characteristics in terms of lower threshold current, greater mode suppression, and lower nonlashing photon population in the laser cavity. The authors also identify the role of strain on the large signal temporal response. If the laser is switched from the off state to a given photon density in the lasing mode, then the strained system exhibits a faster intrinsic time response. However, if the lasers are switched to equal total photon density, then the strained system has a slower time response. The authors also include calculated CHSH Auger rates in our model and find that the main effect of Auger recombination is to greatly increase the threshold current and to shorten the response time to large signal switching.

  3. HANDBOOK OF ACCELERATOR PHYSICS AND ENGINEERING Editors: M. Tigner...

    Office of Scientific and Technical Information (OSTI)

    Union Conf. on Act. (1972); INP 70-72 (1972); SLAC TRANS 151 (1973) E. Keil, Proc. 3rd ICFA Beam Dyn. Wkshp. (1989); CERN-LEP-TH89-37 (1989) Grsay SR Group, IEEE Trans. Nucl. Sci. ...

  4. Marine Ice Nuclei Collections … MAGIC (MAGIC-IN) Final Campaign...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... low Chlorophyll-a (with the exception of near-shore) ocean regions, which exist along the MAGIC transect. Current analyses suggest that INP numbers in the marine boundary ...

  5. PNIC.F.F2a

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Task 3 - Chemical Mechanical Polishing The chemical mechanical polishing of ELO and non-ELO (before lift-off) of InP surfaces and GaAs surfaces would be investigated with various ...

  6. removal

    National Nuclear Security Administration (NNSA)

    80 pounds) of highly enriched uranium (HEU) spent fuel from the Institute of Nuclear Physics (INP) in Almaty, Kazakhstan. The HEU was transported via two air shipments to a...

  7. Timothy J. Coutts - Research Fellow Emeritus | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    in photovoltaics since 1970. Experience the development of CdSCuxS, ITOInP, CdSCdTe, InP homojunction solar cells for space application, CIGS and CdTe thin film solar cells. ...

  8. geospatial data | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    geospatial data Home NickL's picture Submitted by NickL(137) Contributor 25 June, 2012 - 21:45 GIS keyword geospatial data GIS GIS data Explore the geospatial datasets in OpenEI's...

  9. Research Highlight

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Impacts of the Manaus Pollution Plume on the Microphysical Properties of Amazonian Warm-Phase C PI Contact: Machado, L. A., INPE-CPTEC Cecchini, M. A., National Institute for Space Research (INPE) Area of Research: Radiation Processes Working Group(s): Cloud-Aerosol-Precipitation Interactions Journal Reference: Cecchini MA, LA Machado, JM Comstock, F Mei, J Wang, J Fan, JM Tomlinson, B Schmid, R Albrecht, ST Martin, and P Artaxo. 2016. "Impacts of the Manaus pollution plume on the

  10. Low Cost High Efficiency InP-Based Solar Cells: Cooperative Research and Development Final Report, CRADA Number CRD-09-344

    SciTech Connect

    Wanlass, M.

    2012-07-01

    NREL will develop a method of growing and fabricating single junction InP solar cells on 2-inch InP substrates on which a release layer has been deposited by MicroLink Devices. NREL will transfer to MicroLink the details of the InP solar cell layer structure and test results in order that the 2-inch results can be replicated on 4-inch InP substrates. NREL will develop a method of growing and fabricating single junction InP solar cells, including a metamorphic layer, on 2-inch GaAs substrates on which a release layer has been deposited by MicroLink Devices. NREL will transfer to MicroLink the details of the InP solar cell layer structure and test results in order that the 2-inch results can be replicated on 6-inch GaAs substrates. NREL will perform characterization measurements of the solar cells, including I-V and quantum efficiency measurements at AM1.5 1-sun.

  11. Approach for assessing coastal vulnerability to oil spills for prevention and readiness using GIS and the Blowout and Spill Occurrence Model

    SciTech Connect

    Nelson, J. R.; Grubesic, T. H.; Sim, L.; Rose, K.; Graham, J.

    2015-08-01

    Increasing interest in offshore hydrocarbon exploration has pushed the operational fronts associated with exploration efforts further offshore into deeper waters and more uncertain subsurface settings. This has become particularly common in the U.S. Gulf of Mexico. In this study we develop a spatial vulnerability approach and example assessment to support future spill prevention and improve future response readiness. This effort, which is part of a larger integrated assessment modeling spill prevention effort, incorporated economic and environmental data, and utilized a novel new oil spill simulation model from the U.S. Department of Energys National Energy Technology Laboratory, the Blowout and Spill Occurrence Model (BLOSOM). Specifically, this study demonstrated a novel approach to evaluate potential impacts of hypothetical spill simulations at varying depths and locations in the northern Gulf of Mexico. The simulations are analyzed to assess spatial and temporal trends associated with the oil spill. The approach itself demonstrates how these data, tools and techniques can be used to evaluate potential spatial vulnerability of Gulf communities for various spill scenarios. Results of the hypothetical scenarios evaluated in this study suggest that under conditions like those simulated, a strong westward push by ocean currents and tides may increase the impacts of deep water spills along the Texas coastline, amplifying the vulnerability of communities on the local barrier islands. Ultimately, this approach can be used further to assess a range of conditions and scenarios to better understand potential risks and improve informed decision making for operators, responders, and stakeholders to support spill prevention as well as response readiness.

  12. Using remotely sensed imagery and GIS to monitor and research salmon spawning: A case study of the Hanford Reach fall chinook (Oncorhynchus Tshawytscha)

    SciTech Connect

    RH Visser

    2000-03-16

    The alteration of ecological systems has greatly reduced salmon populations in the Pacific Northwest. The Hanford Reach of the Columbia River, for example, is a component of the last ecosystem in eastern Washington State that supports a relatively healthy population of fall chinook salmon ([Oncorhynchus tshawytscha], Huntington et al. 1996). This population of fall chinook may function as a metapopulation for the Mid-Columbia region (ISG 1996). Metapopulations can seed or re-colonize unused habitat through the mechanism of straying (spawning in non-natal areas) and may be critical to the salmon recovery process if lost or degraded habitat is restored (i.e., the Snake, Upper Columbia, and Yakima rivers). For these reasons, the Hanford Reach fall chinook salmon population is extremely important for preservation of the species in the Columbia River Basin. Because this population is important to the region, non-intrusive techniques of analysis are essential for researching and monitoring population trends and spawning activities.

  13. Approach for assessing coastal vulnerability to oil spills for prevention and readiness using GIS and the Blowout and Spill Occurrence Model

    SciTech Connect

    Nelson, J. R.; Grubesic, T. H.; Sim, L.; Rose, K.; Graham, J.

    2015-08-01

    Increasing interest in offshore hydrocarbon exploration has pushed the operational fronts associated with exploration efforts further offshore into deeper waters and more uncertain subsurface settings. This has become particularly common in the U.S. Gulf of Mexico. In this study we develop a spatial vulnerability approach and example assessment to support future spill prevention and improve future response readiness. This effort, which is part of a larger integrated assessment modeling spill prevention effort, incorporated economic and environmental data, and utilized a novel new oil spill simulation model from the U.S. Department of Energy’s National Energy Technology Laboratory, the Blowout and Spill Occurrence Model (BLOSOM). Specifically, this study demonstrated a novel approach to evaluate potential impacts of hypothetical spill simulations at varying depths and locations in the northern Gulf of Mexico. The simulations are analyzed to assess spatial and temporal trends associated with the oil spill. The approach itself demonstrates how these data, tools and techniques can be used to evaluate potential spatial vulnerability of Gulf communities for various spill scenarios. Results of the hypothetical scenarios evaluated in this study suggest that under conditions like those simulated, a strong westward push by ocean currents and tides may increase the impacts of deep water spills along the Texas coastline, amplifying the vulnerability of communities on the local barrier islands. Ultimately, this approach can be used further to assess a range of conditions and scenarios to better understand potential risks and improve informed decision making for operators, responders, and stakeholders to support spill prevention as well as response readiness.

  14. Approach for assessing coastal vulnerability to oil spills for prevention and readiness using GIS and the Blowout and Spill Occurrence Model

    DOE PAGES [OSTI]

    Nelson, J. R.; Grubesic, T. H.; Sim, L.; Rose, K.; Graham, J.

    2015-08-01

    Increasing interest in offshore hydrocarbon exploration has pushed the operational fronts associated with exploration efforts further offshore into deeper waters and more uncertain subsurface settings. This has become particularly common in the U.S. Gulf of Mexico. In this study we develop a spatial vulnerability approach and example assessment to support future spill prevention and improve future response readiness. This effort, which is part of a larger integrated assessment modeling spill prevention effort, incorporated economic and environmental data, and utilized a novel new oil spill simulation model from the U.S. Department of Energy’s National Energy Technology Laboratory, the Blowout and Spillmore » Occurrence Model (BLOSOM). Specifically, this study demonstrated a novel approach to evaluate potential impacts of hypothetical spill simulations at varying depths and locations in the northern Gulf of Mexico. The simulations are analyzed to assess spatial and temporal trends associated with the oil spill. The approach itself demonstrates how these data, tools and techniques can be used to evaluate potential spatial vulnerability of Gulf communities for various spill scenarios. Results of the hypothetical scenarios evaluated in this study suggest that under conditions like those simulated, a strong westward push by ocean currents and tides may increase the impacts of deep water spills along the Texas coastline, amplifying the vulnerability of communities on the local barrier islands. Ultimately, this approach can be used further to assess a range of conditions and scenarios to better understand potential risks and improve informed decision making for operators, responders, and stakeholders to support spill prevention as well as response readiness.« less

  15. Internet Based, GIS Catalog of Non-Traditional Sources of Cooling Water for Use at America's Coal-Fired Power Plants

    SciTech Connect

    J. Daniel Arthur

    2011-09-30

    In recent years, rising populations and regional droughts have caused coal-fired power plants to temporarily curtail or cease production due to a lack of available water for cooling. In addition, concerns about the availability of adequate supplies of cooling water have resulted in cancellation of plans to build much-needed new power plants. These issues, coupled with concern over the possible impacts of global climate change, have caused industry and community planners to seek alternate sources of water to supplement or replace existing supplies. The Department of Energy, through the National Energy Technology Laboratory (NETL) is researching ways to reduce the water demands of coal-fired power plants. As part of the NETL Program, ALL Consulting developed an internet-based Catalog of potential alternative sources of cooling water. The Catalog identifies alternative sources of water, such as mine discharge water, oil and gas produced water, saline aquifers, and publicly owned treatment works (POTWs), which could be used to supplement or replace existing surface water sources. This report provides an overview of the Catalog, and examines the benefits and challenges of using these alternative water sources for cooling water.

  16. A GIS wind resource map with tabular printout of monthly and annual wind speeds for 2,000 towns in Iowa

    SciTech Connect

    Brower, M.C.; Factor, T.

    1997-12-31

    The Iowa Wind Energy Institute, under a grant from the Iowa Energy Center, undertook in 1994 to map wind resources in Iowa. Fifty-meter met towers were erected at 13 locations across the state deemed promising for utility-scale wind farm development. Two years of summarized wind speed, direction, and temperature data were used to create wind resource maps incorporating effects of elevation, relative exposure, terrain roughness, and ground cover. Maps were produced predicting long-term mean monthly and annual wind speeds on a one-kilometer grid. The estimated absolute standard error in the predicted annual average wind speeds at unobstructed locations is 9 percent. The relative standard error between points on the annual map is estimated to be 3 percent. These maps and tabular data for 2,000 cities and towns in Iowa are now available on the Iowa Energy Center`s web site (http.//www.energy.iastate.edu).

  17. Guidelines for Provision and Interchange of Geothermal Data Assets

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... servers and applications, thereby enhancing interoperability among computing systems. ... GIS software such as Quantum GIS, ESRI ArcMap, and MapInfo all define application-specific ...

  18. Integrated Cloud Based Environmental Data Management System

    Office of Environmental Management (EM)

    SMART2 (data warehouse) SMART2 (data interface software) GIS (LANL Geo Database) GFM, ... logs, and well diagrams Integrated GIS Layersbackgrounds: Google Terrain, ...

  19. cialella-99.PDF

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    These data had been maintained exclusively in a Geographic Information System (GIS) called ... of four separate layers of information combined in the ArcInfo GIS (Figure 1). ...

  20. transims-training-course

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Adobe Recordings TRANSIMS Control Files & TRANSIMS Studio Interactive Session TRANSIMS Tools & GIS Concepts & GIS Tools in TRANSIMS TRANSIMS MicroSimulator TRANSIMS TransimsVis ...

  1. Microsoft Word - Appendix E - Erosion Control M&M Inspection...

    Office of Legacy Management (LM)

    ... Information System (GIS), and the construction project lead maintains the construction drawings for active construction projects. The GIS will be updated to reflect new ...

  2. NREL: Solar Research - News Release Archives

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    November 30, 2006 More Than Pretty Maps-NREL Uses GIS to Find Workable Energy Solutions NREL's geographic information systems (GIS) team produces maps of renewable energy resources ...

  3. DOE - NNSA/NFO -- FRMAC Assets

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    deploys a Geographic Information System (GIS) and staffing that is capable of capturing, ... The GIS is also a database where attributes of specific data can easily be referenced. ...

  4. NETL Report format template

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... FVCOM Finite-Volume Community Ocean Model GIS Geographic information system GNOME General ... The GUI includes a basic geographic information system (GIS) to visualize spill results, ...

  5. EERE PowerPoint 97-2004 Template: Green Version

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    and compile geothermal relevant data into GIS project (2) Weight each dataset in terms of ...Technical Approach Execution of Approach: GIS Database 8 | US DOE Geothermal Office ...

  6. Section 104

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The surface characterization data are maintained in a Geographic Information System (GIS) ... The GIS can also be utilized to provide additional information about the CART sites. An ...

  7. EERE PowerPoint 97-2004 Template: Green Version

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... heat transfer * Incorporate data into a GIS database for processing * Process into ... each play identified - Ancillary data for GIS overlays * ASTER analysis (10 images) - ...

  8. Document Title

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Register FY fiscal year GHG greenhouse gas GIS Geographical Information System HCRC ... The evaluation integrated Geographic Information System (GIS) field-data of currently ...

  9. Monolithic multi-color light emission/detection device

    DOEpatents

    Wanlass, M.W.

    1995-02-21

    A single-crystal, monolithic, tandem, multi-color optical transceiver device is described, including (a) an InP substrate having upper and lower surfaces, (b) a first junction on the upper surface of the InP substrate, (c) a second junction on the first junction. The first junction is preferably GaInAsP of defined composition, and the second junction is preferably InP. The two junctions are lattice matched. The second junction has a larger energy band gap than the first junction. Additional junctions having successively larger energy band gaps may be included. The device is capable of simultaneous and distinct multi-color emission and detection over a single optical fiber. 5 figs.

  10. Low-bandgap, monolithic, multi-bandgap, optoelectronic devices

    DOEpatents

    Wanlass, Mark W.; Carapella, Jeffrey J.

    2016-03-22

    Low bandgap, monolithic, multi-bandgap, optoelectronic devices (10), including PV converters, photodetectors, and LED's, have lattice-matched (LM), double-heterostructure (DH), low-bandgap GaInAs(P) subcells (22, 24) including those that are lattice-mismatched (LMM) to InP, grown on an InP substrate (26) by use of at least one graded lattice constant transition layer (20) of InAsP positioned somewhere between the InP substrate (26) and the LMM subcell(s) (22, 24). These devices are monofacial (10) or bifacial (80) and include monolithic, integrated, modules (MIMs) (190) with a plurality of voltage-matched subcell circuits (262, 264, 266, 270, 272) as well as other variations and embodiments.

  11. Monolithic multi-color light emission/detection device

    DOEpatents

    Wanlass, Mark W.

    1995-01-01

    A single-crystal, monolithic, tandem, multi-color optical transceiver device is described, including (a) an InP substrate having upper and lower surfaces, (b) a first junction on the upper surface of the InP substrate, (c) a second junction on the first junction. The first junction is preferably GaInAsP of defined composition, and the second junction is preferably InP. The two junctions are lattice matched. The second junction has a larger energy band gap than the first junction. Additional junctions having successively larger energy band gaps may be included. The device is capable of simultaneous and distinct multi-color emission and detection over a single optical fiber.

  12. XAFS Model Compound Library

    DOE Data Explorer

    Newville, Matthew

    The XAFS Model Compound Library contains XAFS data on model compounds. The term "model" compounds refers to compounds of homogeneous and well-known crystallographic or molecular structure. Each data file in this library has an associated atoms.inp file that can be converted to a feff.inp file using the program ATOMS. (See the related Searchable Atoms.inp Archive at http://cars9.uchicago.edu/~newville/adb/) This Library exists because XAFS data on model compounds is useful for several reasons, including comparing to unknown data for "fingerprinting" and testing calculations and analysis methods. The collection here is currently limited, but is growing. The focus to date has been on inorganic compounds and minerals of interest to the geochemical community. [Copied, with editing, from http://cars9.uchicago.edu/~newville/ModelLib/

  13. Low-bandgap, monolithic, multi-bandgap, optoelectronic devices

    DOEpatents

    Wanlass, Mark W.; Carapella, Jeffrey J.

    2016-01-05

    Low bandgap, monolithic, multi-bandgap, optoelectronic devices (10), including PV converters, photodetectors, and LED's, have lattice-matched (LM), double-heterostructure (DH), low-bandgap GaInAs(P) subcells (22, 24) including those that are lattice-mismatched (LMM) to InP, grown on an InP substrate (26) by use of at least one graded lattice constant transition layer (20) of InAsP positioned somewhere between the InP substrate (26) and the LMM subcell(s) (22, 24). These devices are monofacial (10) or bifacial (80) and include monolithic, integrated, modules (MIMs) (190) with a plurality of voltage-matched subcell circuits (262, 264, 266, 270, 272) as well as other variations and embodiments.

  14. Effect of emitter parameter variation on the performance of heteroepitaxial indium phosphide solar cells

    SciTech Connect

    Jain, R.K.; Flood, D.J.

    1990-12-01

    Metallorganic chemical-vapor-deposited heteroepitaxial indium phosphide (InP) solar cell experimental results were simulated by using a PC-1D computer model. The effect of emitter parameter variation on the performance of n(+)/p/p(+) heteroepitaxial InP/GaAs solar cell was presented. The thinner and lighter doped emitters were observed to offer higher cell efficiencies. The influence of emitter thickness and minority carrier diffusion length on the cell efficiency with respect to dislocation density was studied. Heteroepitaxial cells with efficiencies similar to present day homojunction InP efficiencies (greater than 16 percent AMO) were shown to be attainable if a dislocation density lower than 10(exp 6)/sq cm could be achieved. A realistic optimized design study yielded InP solar cells of over 22 percent AMO efficiency at 25 C.

  15. Low-bandgap, monolithic, multi-bandgap, optoelectronic devices

    DOEpatents

    Wanlass, Mark W.; Carapella, Jeffrey J.

    2014-07-08

    Low bandgap, monolithic, multi-bandgap, optoelectronic devices (10), including PV converters, photodetectors, and LED's, have lattice-matched (LM), double-heterostructure (DH), low-bandgap GaInAs(P) subcells (22, 24) including those that are lattice-mismatched (LMM) to InP, grown on an InP substrate (26) by use of at least one graded lattice constant transition layer (20) of InAsP positioned somewhere between the InP substrate (26) and the LMM subcell(s) (22, 24). These devices are monofacial (10) or bifacial (80) and include monolithic, integrated, modules (MIMs) (190) with a plurality of voltage-matched subcell circuits (262, 264, 266, 270, 272) as well as other variations and embodiments.

  16. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    "/INFN, Legnaro/INFN, Legnaro/INFN, Legnaro/INFN, Trieste/Insubria U., Como/INFN, Milan Bicocca/Insubria U., Como/INFN, Milan Bicocca/Insubria U., Como/INFN, Milan Bicocca/Insubria U., Como/INFN, Milan Bicocca/Insubria U., Como/INFN, Milan Bicocca/Insubria U., Como/INFN, Milan Bicocca/INFN, Rome/INFN, Rome/INFN, Rome/INFN, Rome/INFN, Rome/Frascati/Serpukhov, IHEP/Serpukhov, IHEP/Serpukhov, IHEP/Serpukhov, IHEP/Dubna, JINR/Dubna, JINR/St. Petersburg, INP/St. Petersburg, INP/St. Petersburg,

  17. Indium tin oxide and indium phosphide heterojunction nanowire array solar cells

    SciTech Connect

    Yoshimura, Masatoshi Nakai, Eiji; Fukui, Takashi; Tomioka, Katsuhiro; PRESTO, Japan Science and Technology Agency , Honcho Kawaguchi, 3320012 Saitama

    2013-12-09

    Heterojunction solar cells were formed with a position-controlled InP nanowire array sputtered with indium tin oxide (ITO). The ITO not only acted as a transparent electrode but also as forming a photovoltaic junction. The devices exhibited an open-circuit voltage of 0.436?V, short-circuit current of 24.8?mA/cm{sup 2}, and fill factor of 0.682, giving a power conversion efficiency of 7.37% under AM1.5?G illumination. The internal quantum efficiency of the device was higher than that of the world-record InP cell in the short wavelength range.

  18. Southern Great Plains Ice Nuclei Characterization Experiment Final Campaign Summary

    SciTech Connect

    DeMott, PJ; Suski, KJ; Hill, TCJ; Levin, EJT

    2015-03-01

    The first ever ice nucleating particle (INP) measurements to be collected at the Southern Great Plains site were made during a period from late April to June 2014, as a trial for possible longer-term measurements at the site. These measurements will also be used to lay the foundation for understanding and parameterizing (for cloud resolving modeling) the sources of these climatically important aerosols as well as to augment the existing database containing this knowledge. Siting the measurements during the spring was intended to capture INP sources in or to this region from plant, soil, dust transported over long distances, biomass burning, and pollution aerosols at a time when they may influence warm-season convective clouds and precipitation. Data have been archived of real-time measurements of INP number concentrations as a function of processing conditions (temperature and relative humidity) during 18 days of sampling that spanned two distinctly different weather situations: a warm, dry and windy period with regional dust and biomass burning influences in early May, and a cooler period of frequent precipitation during early June. Precipitation delayed winter wheat harvesting, preventing intended sampling during that perturbation on atmospheric aerosols. INP concentrations were highest and most variable at all temperatures in the dry period, where we attribute the INP activity primarily to soil dust emissions. Additional offline INP analyses are underway to extend the characterization of INP to cover the entire mixed phase cloud regime from -5°C to -35°C during the full study. Initial comparisons between methods on four days show good agreement and excellent future promise. The additional offline immersion freezing data will be archived as soon as completed under separate funding. Analyses of additional specialized studies for specific attribution of INP to biological and smoke sources are continuing via the National Science Foundation and National Aeronautics

  19. Application of Spatial Data Modeling Systems, Geographical Information Systems (GIS), and Transportation Routing Optimization Methods for Evaluating Integrated Deployment of Interim Spent Fuel Storage Installations and Advanced Nuclear Plants

    SciTech Connect

    Mays, Gary T; Belles, Randy; Cetiner, Sacit M; Howard, Rob L; Liu, Cheng; Mueller, Don; Omitaomu, Olufemi A; Peterson, Steven K; Scaglione, John M

    2012-06-01

    The objective of this siting study work is to support DOE in evaluating integrated advanced nuclear plant and ISFSI deployment options in the future. This study looks at several nuclear power plant growth scenarios that consider the locations of existing and planned commercial nuclear power plants integrated with the establishment of consolidated interim spent fuel storage installations (ISFSIs). This research project is aimed at providing methodologies, information, and insights that inform the process for determining and optimizing candidate areas for new advanced nuclear power generation plants and consolidated ISFSIs to meet projected US electric power demands for the future.

  20. Geospatial | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    Geospatial > Posts by term Content Group Activity By term Q & A Feeds ask queries (1) compound queries (1) data (1) developer (1) geospatial data (1) GIS (1) GIS data (1) Global...

  1. http://www.esri.com/data/data-maps/index.html

    National Nuclear Security Administration (NNSA)

    Overview Data & Maps content is preconfigured to work with ArcGIS products and provided at no additional cost for ArcGIS users. Data & Maps-DVD containing ready-to-use basemaps and...

  2. Women @ Energy: Emily Zvolanek | Department of Energy

    Office of Environmental Management (EM)

    Emily Zvolanek is a senior GIS analyst in the Environmental Science Division at Argonne National Laboratory, where she has worked since 2010. Emily Zvolanek is a senior GIS analyst ...

  3. EERE PowerPoint 97-2004 Template: Green Version

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    and Snake River Plain regions * Created GIS maps depicting results of existing data and ... isotope data for Cascades region * Created GIS map of He isotope data and locations of ...

  4. Biomass 2013: Welcome

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    The Bioenergy KDF is an online, GIS-based framework (funded by BETO) that ... The GIS-based framework allows users to analyze the economic and environmental impacts of ...

  5. EERE PowerPoint 97-2004 Template: Green Version

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... data sets. Data processed & entered into GIS May 1, 2015 1) Calculated fault dilantency ... 3) Data included in shape files for GIS (e.g. examples in presentation figures). 4) ...

  6. NREL: Measurements and Characterization - Dual-Beam Sample Preparation

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The FIB is equipped with a gas injection system (GIS) platinum metal deposition capability ... dual beam FIB showing nano deposition with GIS of Pt contacts to a single GaN nanowire. ...

  7. Final Report - Development of an Open Source Utility-Scale Solar...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of System Costs PVMapper is an open source GIS application for utility-scale PV project ... From a single application, PVMapper provides the most relevant GIS data layers and a ...

  8. geospatial | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    geospatial Home Geospatial Description: Discuss and explore geospatial data available on OpenEI. geospatial GIS spatial analysis...

  9. Federal Biomass Activities

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    stewardship, environmental management systems stewardship, environmental management ... especially E85 pumps - - DOE GIS database identifying location of Federal fleets ...

  10. Pyramid Lake Paiute Tribe - Pyramid Lake Energy Project - Geothermal...

    Office of Environmental Management (EM)

    ... Geophysical Investigations * Historical information collection essentially done. * Hyperspectral Analysis Done. * Compilation of data with GIS data nearing completion. * Field data ...

  11. Microsoft PowerPoint - MACRUC Smart Grid School_rev 2A_NETL.pptx

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... * Geographic Information System (GIS) * Distributed generation and storage * ... * Wide Area Measurement System (WAMS) * Substation Automation Substation Automation * ...

  12. Tribal Energy Project Development Process | Department of Energy

    Energy Saver

    * Narrow technology options * Resource assessments * Training * Business models * GIS mapping * Technology scenario analysis * Permitting tools * Workshops and webinars Step ...

  13. InP:Fe Photoconducting device

    DOEpatents

    Hammond, Robert B.; Paulter, Nicholas G.; Wagner, Ronald S.

    1984-01-01

    A photoconducting device fabricated from Fe-doped, semi-insulating InP crystals exhibits an exponential decay transient with decay time inversely related to Fe concentration. Photoconductive gain as high as 5 is demonstrated in photoconducting devices with AuGe and AuSn contacts. Response times from 150 to 1000 picoseconds can be achieved.

  14. InP:Fe photoconducting device

    DOEpatents

    Hammond, R.B.; Paulter, N.G.; Wagner, R.S.

    A photoconducting device fabricated from Fe-doped, semi-insulating InP crystals exhibits an exponential decay transient with decay time inversely related to Fe concentration. Photoconductive gain as high as 5 is demonstrated in photoconducting devices with AuGe and AuSn contacts. Response times from 150 to 1000 picoseconds can be achieved.

  15. Understanding cirrus ice crystal number variability for different heterogeneous ice nucleation spectra

    DOE PAGES [OSTI]

    Sullivan, Sylvia C.; Morales Betancourt, Ricardo; Barahona, Donifan; Nenes, Athanasios

    2016-03-03

    Along with minimizing parameter uncertainty, understanding the cause of temporal and spatial variability of the nucleated ice crystal number, Ni, is key to improving the representation of cirrus clouds in climate models. To this end, sensitivities of Ni to input variables like aerosol number and diameter provide valuable information about nucleation regime and efficiency for a given model formulation. Here we use the adjoint model of the adjoint of a cirrus formation parameterization (Barahona and Nenes, 2009b) to understand Ni variability for various ice-nucleating particle (INP) spectra. Inputs are generated with the Community Atmosphere Model version 5, and simulations are donemore » with a theoretically derived spectrum, an empirical lab-based spectrum and two field-based empirical spectra that differ in the nucleation threshold for black carbon particles and in the active site density for dust. The magnitude and sign of Ni sensitivity to insoluble aerosol number can be directly linked to nucleation regime and efficiency of various INP. The lab-based spectrum calculates much higher INP efficiencies than field-based ones, which reveals a disparity in aerosol surface properties. Ni sensitivity to temperature tends to be low, due to the compensating effects of temperature on INP spectrum parameters; this low temperature sensitivity regime has been experimentally reported before but never deconstructed as done here.« less

  16. removal | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    removal US, Kazakhstan Cooperate to Eliminate Highly Enriched Uranium WASHINGTON D.C - The Department of Energy's National Nuclear Security Administration (DOE/NNSA) announced today the removal of 36 kilograms (approximately 80 pounds) of highly enriched uranium (HEU) spent fuel from the Institute of Nuclear Physics (INP) in Almaty, Kazakhstan. The HEU was

  17. Cytotoxicity of InP/ZnS quantum dots related to reactive oxygen species generation.

    SciTech Connect

    Chibli, H.; Carlini, L.; Park, S.; Dimitrijevic, N. M.; Nadeau, J. L.

    2011-01-01

    Indium phosphide (InP) quantum dots (QDs) have emerged as a presumably less hazardous alternative to cadmium-based particles, but their cytotoxicity has not been well examined. Although their constituent elements are of very low toxicity to cells in culture, they nonetheless exhibit phototoxicity related to generation of reactive oxygen species by excited electrons and/or holes interacting with water and molecular oxygen. Using spin-trap electron paramagnetic resonance (EPR) spectroscopy and reporter assays, we find a considerable amount of superoxide and a small amount of hydroxyl radical formed under visible illumination of biocompatible InP QDs with a single ZnS shell, comparable to what is seen with CdTe. A double thickness shell reduces the reactive oxygen species concentration approximately two-fold. Survival assays in five cell lines correspondingly indicate a distinct reduction in toxicity with the double-shell InP QDs. Toxicity varies significantly across cell lines according to the efficiency of uptake, being overall significantly less than what is seen with CdTe or CdSe/ZnS. This indicates that InP QDs are a useful alternative to cadmium-containing QDs, while remaining capable of electron-transfer processes that may be undesirable or which may be exploited for photosensitization applications.

  18. Understanding cirrus ice crystal number variability for different heterogeneous ice nucleation spectra

    DOE PAGES [OSTI]

    Sullivan, S. C.; Morales Betancourt, R.; Barahona, D.; Nenes, A.

    2015-08-11

    Along with minimizing parameter uncertainty, understanding the cause of temporal and spatial variability of nucleated ice crystal number, Ni, is key to improving the representation of cirrus clouds in climate models. To this end, sensitivities of Ni to input variables like aerosol number and diameter provide valuable information about nucleation regime and efficiency for a given model formulation. Here we use the adjoint model of the Barahona and Nenes cirrus formation parameterization to understand Ni variability for various ice-nucleating particle (INP) spectra. Inputs are generated with the Community Atmosphere Model version 5, and simulations are done with a theoretically-derived spectrum,morea lab-based empirical spectrum, and two field-based empirical spectra that differ in the nucleation threshold for black carbon aerosol and in the active site density for dust. The magnitude and sign of Ni sensitivity to insoluble aerosol number can be directly linked to nucleation regime and efficiency of various INP. The lab-based spectrum calculates much higher INP efficiencies than field-based ones, which reveals a disparity in aerosol surface properties. Ni sensitivity to temperature tends to be low, due to the compensating effects of temperature on INP spectrum parameters; this low temperature sensitivity regime has been experimentally reported before but never unraveled as done here.less

  19. nem_spread Ver. 5.10

    Energy Science and Technology Software Center

    2009-06-08

    Nem_spread reads it's input command file (default name nem_spread.inp), takes the named ExodusII geometry definition and spreads out the geometry (and optionally results) contained in that file out to a parallel disk system. The decomposition is taken from a scalar Nemesis load balance file generated by the companion utility nem_slice.

  20. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Room-temperature mid-infrared "M"-type GaAsSbInGaAs quantum well lasers on InP substrate Chang, Chia-Hao ; Li, Zong-Lin ; Pan, Chien-Hung ; Lu, Hong-Ting ; Lee, Chien-Ping ; Lin, ...

  1. Understanding cirrus ice crystal number variability for different heterogeneous ice nucleation spectra

    DOE PAGES [OSTI]

    Sullivan, Sylvia C.; Morales Betancourt, Ricardo; Barahona, Donifan; Nenes, Athanasios

    2016-03-03

    Along with minimizing parameter uncertainty, understanding the cause of temporal and spatial variability of the nucleated ice crystal number, Ni, is key to improving the representation of cirrus clouds in climate models. To this end, sensitivities of Ni to input variables like aerosol number and diameter provide valuable information about nucleation regime and efficiency for a given model formulation. Here we use the adjoint model of the adjoint of a cirrus formation parameterization (Barahona and Nenes, 2009b) to understand Ni variability for various ice-nucleating particle (INP) spectra. Inputs are generated with the Community Atmosphere Model version 5, and simulations are donemore » with a theoretically derived spectrum, an empirical lab-based spectrum and two field-based empirical spectra that differ in the nucleation threshold for black carbon particles and in the active site density for dust. The magnitude and sign of Ni sensitivity to insoluble aerosol number can be directly linked to nucleation regime and efficiency of various INP. The lab-based spectrum calculates much higher INP efficiencies than field-based ones, which reveals a disparity in aerosol surface properties. In conclusion, Ni sensitivity to temperature tends to be low, due to the compensating effects of temperature on INP spectrum parameters; this low temperature sensitivity regime has been experimentally reported before but never deconstructed as done here.« less

  2. Time-resolved photoluminescence of ytterbium in indium phosphide. Master's thesis

    SciTech Connect

    Bumgarner, T.F.

    1988-12-01

    Time-resolved photoluminescence of ytterbium (Yb) implanted in indium phosphide (Inp) was the primary emphasis of this research. The decay lifetimes of the 1002-nm Yb emission were investigated as a function of temperature. Initial attempts were made to investigate as a function of temperature. Initial attempts were made to investigate aluminum gallium arsenide (AlGaAs) implanted with ytterbium.

  3. New Mexico Geothermal Play Fairway Analysis from LANL

    DOE Data Explorer

    Rick Kelley

    2015-10-27

    This submission contains geospatial (GIS) data on water table gradient and depth, subcrop gravity and magnetic, propsectivity, heat flow, physiographic, boron and BHT for the Southwest New Mexico Geothermal Play Fairway Analysis by LANL Earth & Environmental Sciences. GIS data is in ArcGIS map package format.

  4. Gas-insulated substations: Technology and practice

    SciTech Connect

    Boggs, S.A.; Chu, F.Y.; Fujimoto, N.

    1985-01-01

    This book presents papers summarizing design, use, application, and operation of gas-insulated substations. Subjects covered include economics of GIS, specification of GIS, design, site testing, design and type testing, diagnostics, experience, maintenance, medium high voltage GIS, and new concepts and future trends.

  5. Experience with gas insulated substations in the USA

    SciTech Connect

    Eriksson, A.; Pettersson, K.G.; Krenicky, A.; Baker, R.; Ochoa, J.R.; Leibold, A.

    1994-12-31

    This paper summarizes investigations on the reliability of GIS in the USA, including a recent primary pilot survey of US utility experience over the last 20 years. The early years of GIS introduction were associated with problems with first generation technology, and the resultant service data shows that such difficulties may have contributed to overall perceptions on GIS reliability. A reviews of the design features of early GIS is thus presented and related to the design and processing approaches adopted for proven modern technology. In order to relate these observations to recent experience, the paper includes comparative analyses with the broader based reliability data acquired from a large number of operation GIS around the world supporting the very high reliability that can be expected from modern GIS. Implications for GIS design and advantages for modern practical application are summarized.

  6. Experience with gas insulated substations in the USA

    SciTech Connect

    Eriksson, A.; Pettersson, K.G.; Krenicky, A.; Baker, R.; Ochoa, J.R.; Leibold, A.

    1995-01-01

    This paper summarizes investigations on the reliability of GIS in the USA, including a recent primary pilot survey or US utility experience over the last 20 years. The early years of GIS introduction were associated with problems with first generation technology, and the resultant service data shows that such difficulties may have contributed to overall perceptions on GIS reliability. A review or the design features of early GIS is thus presented and related to the design and processing approaches adopted for proven modern technology. In order to relate these observations to recent experience, the paper includes comparative analyses with the broader based reliability data acquired from a large number or operational GIS around the world supporting the very high reliability that can be expected from modern GIS. Implications for GIS design and advantages for modern practical application are summarized.

  7. Halftoning band gap of InAs/InP quantum dots using inductively coupled argon plasma-enhanced intermixing

    SciTech Connect

    Nie, D.; Mei, T.; Xu, C. D.; Dong, J. R.

    2006-09-25

    Inductively coupled argon plasma-enhanced intermixing of InAs/InP quantum dots grown on InP substrate is investigated. Intermixing is promoted by the near-surface defects generated by plasma exposure in annealing at a temperature of 600 deg. C for 30 s. The annealing results in a maximum differential band-gap blueshift of 106 nm but a thermal shift of only 10 nm. Band-gap halftones are obtained by controlling the amount of near-surface defects via wet chemical etching on the plasma-exposed InP cap layer. No degradation of quantum-dot crystal quality due to the process has been observed as evidenced by photoluminescence intensity.

  8. Investigation to the deep center related properties of low temperature grown InPBi with Hall and photoluminescence

    SciTech Connect

    Wang, Peng; Pan, Wenwu; Wu, Xiaoyan; Wang, Kai; Yue, Li; Gong, Qian; Wang, Shumin

    2015-12-15

    InP{sub 1-x}Bi{sub x} epilayers with bismuth (Bi) concentration x= 1.0% were grown on InP by gas source molecular beam epitaxy (GS-MBE) at low temperature (LT). Bi incorporation decreased the intrinsic free electron concentration of low temperature grown InP indicated by hall analysis. It is concluded that deep level center was introduced by Bi. Influence of Si doping on the InP{sub 1-x}Bi{sub x} films Photoluminescence (PL) was investigated. N-type doping in the InP{sub 1-x}Bi{sub x} epilayers was found to be effective at PL enhancement. Blue shift of InPBi PL emission wavelength was observed as the Si doping concentration increasing. Two independent peaks were fitted and their temperature dependence behavior was observed to be distinct obviously. Two individual radiative recombination processes were expected to be involved.

  9. Spectroscopic properties of colloidal indium phosphide quantum wires

    SciTech Connect

    Wang, Lin-Wang; Wang, Fudong; Yu, Heng; Li, Jingbo; Hang, Qingling; Zemlyanov, Dmitry; Gibbons, Patrick C.; Wang, Lin-Wang; Janes, David B.; Buhro, William E.

    2008-07-11

    Colloidal InP quantum wires are grown by the solution-liquid-solid (SLS) method, and passivated with the traditional quantum dots surfactants 1-hexadecylamine and tri-n-octylphosphine oxide. The size dependence of the band gaps in the wires are determined from the absorption spectra, and compared to other experimental results for InP quantum dots and wires, and to the predictions of theory. The photoluminescence behavior of the wires is also investigated. Efforts to enhance photoluminescence efficiencies through photochemical etching in the presence of HF result only in photochemical thinning or photo-oxidation, without a significant influence on quantum-wire photoluminescence. However, photo-oxidation produces residual dot and rod domains within the wires, which are luminescent. The results establish that the quantum-wire band gaps are weakly influenced by the nature of the surface passivation, and that colloidal quantum wires have intrinsically low photoluminescence efficiencies.

  10. Radiation Control on Uzbekistan Borders - Results and Perspectives

    SciTech Connect

    Petrenko, Vitaliy; Yuldashev, Bekhzod; Ismailov, Ulughbek; Shipilov, Nikolay; Chipizubov, Sergey; Avezov, Anvar

    2009-12-02

    The measures and actions on prevention, detection and response to criminal or unauthorized acts involving radioactive materials in Uzbekistan are presented. In frames of program of radiation monitoring to prevent illicit trafficking of nuclear and radioactive materials main customs border checkpoints were equipped with commercial radiation portal monitors. Special radiation monitors elaborated and manufactured in INP AS RU are installed in INP(main gates, research reactor and laboratory building) to provide nuclear security of Institute facilities. The experience of Uzbekistan in establishing radiation monitoring systems on its borders, their operation and maintenance would be useful for realization of proposed plan of strengthening measures to prevent illicit trafficking in Republics of Central Asia region.

  11. Near-infrared photodetector with reduced dark current

    DOEpatents

    Klem, John F; Kim, Jin K

    2012-10-30

    A photodetector is disclosed for the detection of near-infrared light with a wavelength in the range of about 0.9-1.7 microns. The photodetector, which can be formed as either an nBp device or a pBn device on an InP substrate, includes an InGaAs light-absorbing layer, an InAlGaAs graded layer, an InAlAs or InP barrier layer, and an InGaAs contact layer. The photodetector can detect near-infrared light with or without the use of an applied reverse-bias voltage and is useful as an individual photodetector, or to form a focal plane array.

  12. Proceedings of the 12th Space Photovoltaic Research and Technology Conference (SPRAT 12)

    SciTech Connect

    1993-05-01

    The Twelfth Space Photovoltaic Research and Technology conference was held at the NASA Lewis Research Center from 20 to 22 Oct. 1992. The papers and workshops presented in this volume report substantial progress in a variety of areas in space photovoltaics. Topics covered include: high efficiency GaAs and InP solar cells, GaAs/Ge cells as commercial items, flexible amorphous and thin film solar cells (in the early stages of pilot production), high efficiency multiple bandgap cells, laser power converters, solar cell and array technology, heteroepitaxial cells, betavoltaic energy conversion, and space radiation effects in InP cells. Space flight data on a variety of cells were also presented. Separate abstracts have been prepared for articles from this report.

  13. Detection of lateral composition modulation by magnetoexciton spectroscopy

    SciTech Connect

    Jones, E.D.; Millunchick, J.M.; Follstaedt, D.; Lee, S.; Reno, J.; Twesten, R.D.; Zhang, Y.; Mascerenhas, A.

    1997-07-10

    An experimental signature for detecting spontaneous lateral composition modulation in a (InAs){sub n}/(GaAs){sub m} short period superlattice on an InP substrate based on magnetoexciton spectroscopy described. The authors find by aligning the magnetic field in three crystallographic directions, one parallel to and the other two perpendicular to the composition modulation direction, that the magnetoexciton shifts are anisotropic and are a good indicator for the presence of composition modulation.

  14. Indium diffusion through high-k dielectrics in high-k/InP stacks

    SciTech Connect

    Dong, H.; Cabrera, W.; Santosh KC,; Brennan, B.; Qin, X.; McDonnell, S.; Hinkle, C. L.; Cho, K.; Chabal, Y. J.; Galatage, R. V.; Zhernokletov, D.; Wallace, R. M.; Department of Physics, University of Texas at Dallas, Richardson, Texas 75080

    2013-08-05

    Evidence of indium diffusion through high-k dielectric (Al{sub 2}O{sub 3} and HfO{sub 2}) films grown on InP (100) by atomic layer deposition is observed by angle resolved X-ray photoelectron spectroscopy and low energy ion scattering spectroscopy. The analysis establishes that In-out diffusion occurs and results in the formation of a PO{sub x} rich interface.

  15. US, Kazakhstan Cooperate to Eliminate Highly Enriched Uranium | National

    National Nuclear Security Administration (NNSA)

    Nuclear Security Administration | (NNSA) US, Kazakhstan Cooperate to Eliminate Highly Enriched Uranium January 07, 2015 WASHINGTON D.C - The Department of Energy's National Nuclear Security Administration (DOE/NNSA) announced today the removal of 36 kilograms (approximately 80 pounds) of highly enriched uranium (HEU) spent fuel from the Institute of Nuclear Physics (INP) in Almaty, Kazakhstan. The HEU was transported via two air shipments to a secure facility in Russia for permanent

  16. Spectral methods for global atmospheric flow applied to the modified AFIT (Air Force Institute of Technology) fallout prediction model. Master's thesis

    SciTech Connect

    Palmer, D.L.

    1986-09-01

    This thesis predicted the airborne spatial distribution of a high-explosive-generated dust cloud. A comparison of predicted cloud center positions to experimental data collected from an aircraft flying through the dust cloud center at various times and altitudes was also studied. The analysis was accomplished using a model called AFGL which produces global complex spectral coefficients. Spectral coefficients were applied as inp fallout prediction model (called REDRAM) to predict dust mass/cu. m.

  17. Recommendation 228: Recommendations on the FY 2017 DOE Oak Ridge

    Office of Environmental Management (EM)

    Department of Energy 5: Recommendation on DOE Oak Ridge GIS Fact Sheets Recommendation 225: Recommendation on DOE Oak Ridge GIS Fact Sheets Not all fact sheets that can be accessed on the DOE GIS include descriptions of future decisions or actions on cleanup areas. ORSSAB recommends that all fact sheets identify future actions expected or planned. Recommendation225.pdf (148.18 KB) Responseto225.pdf (238.07 KB) More Documents & Publications Recommendation 224: Recommendations on the FY

  18. Prediction of a strain-induced conduction-band minimum in embedded quantum dots

    SciTech Connect

    Williamson, A.J.; Zunger, A.; Canning, A.

    1998-02-01

    Free-standing InP quantum dots have previously been theoretically and experimentally shown to have a direct band gap across a large range of experimentally accessible sizes. We demonstrated that when these dots are embedded coherently within a GaP barrier material, the effects of quantum confinement in conjunction with coherent strain suggest there will be a critical diameter of dot ({approx}60 {Angstrom}), above which the dot is direct, type I, and below which it is indirect, type II. However, the strain in the system acts to produce another conduction state with an even lower energy, in which electrons are localized in small pockets at the interface between the InP dot and the GaP barrier. Since this conduction state is GaP X{sub 1c} derived and the highest occupied valence state is InP, {Gamma} derived, the fundamental transition is predicted to be indirect in both real and reciprocal space ({open_quotes}type II{close_quotes}) for all dot sizes. This effect is peculiar to the strained dot, and is absent in the freestanding dot. {copyright} {ital 1998} {ital The American Physical Society}

  19. The role of the substrate on the dispersion in accumulation in III-V compound semiconductor based metal-oxide-semiconductor gate stacks

    SciTech Connect

    Krylov, Igor; Ritter, Dan; Eizenberg, Moshe

    2015-09-07

    Dispersion in accumulation is a widely observed phenomenon in metal-oxide-semiconductor gate stacks based on III-V compound semiconductors. The physical origin of this phenomenon is attributed to border traps located in the dielectric material adjacent to the semiconductor. Here, we study the role of the semiconductor substrate on the electrical quality of the first layers at atomic layer deposited (ALD) dielectrics. For this purpose, either Al{sub 2}O{sub 3} or HfO{sub 2} dielectrics with variable thicknesses were deposited simultaneously on two technology important semiconductors—InGaAs and InP. Significantly larger dispersion was observed in InP based gate stacks compared to those based on InGaAs. The observed difference is attributed to a higher border trap density in dielectrics deposited on InP compared to those deposited on InGaAs. We therefore conclude that the substrate plays an important role in the determination of the electrical quality of the first dielectric monolayers deposited by ALD. An additional observation is that larger dispersion was obtained in HfO{sub 2} based capacitors compared to Al{sub 2}O{sub 3} based capacitors, deposited on the same semiconductor. This phenomenon is attributed to the lower conduction band offset rather than to a higher border trap density.

  20. Search Response Team | National Nuclear Security Administration...

    National Nuclear Security Administration (NNSA)

    General response procedures include: Coordinate with law enforcement agencies to select particular target areas. Map the areas in a Geographical Information System (GIS) formatted ...

  1. USAJobs Search | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    integration for applications which: 1) support agencys geospatial information systems (GIS); 2) support Computer Aided Design systems (CAD) and knowledge workers; and 3) support...

  2. Rhode Island High Resolution Wind Resource - Datasets - OpenEI...

    OpenEI (Open Energy Information) [EERE & EIA]

    Detailed license and usage information for this dataset Preview Download 50m GIS NREL Rhode Island energy high resoltuion renewable shapefile wind wind data wind...

  3. Geospatial Toolkit | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Laboratory (NREL). It integrates resource data and geographic information systems (GIS) - for integrated resource assessment. The Geospatial Toolkit (GsT) is a map-based...

  4. CenterPoint Energy | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    .centerpointenergy.comhome Twitter: @CNPalerts Outage Hotline: 800-332-7143 Outage Map: gis.centerpointenergy.comouta Green Button Access: Implemented Green Button Landing Page:...

  5. Ethiopia-DLR Resource Assessments | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    to 2004 the German Aerospace Center (DLR) worked with Ethiopia on solar resource and GIS analysis as part of UNEP's Solar and Wind Energy Resource Assessment (SWERA) Programme....

  6. Bangladesh-DLR Resource Assessments | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    to 2004 the German Aerospace Center (DLR) worked with Bangladesh on solar resource and GIS analysis as part of UNEP's Solar and Wind Energy Resource Assessment (SWERA) Programme....

  7. File:SWERA-247.pdf | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    navigation, search File File history File usage Solar: monthly global horizontal (GHI) GIS data at 40km resolution for Bangladesh from NREL Size of this preview: 776 600...

  8. CenterPoint Energy | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Energy Place: Houston, Texas Service Territory: Texas Website: www.centerpointenergy.comhome Twitter: @CNPalerts Outage Hotline: 800-332-7143 Outage Map: gis.centerpointenergy.co...

  9. Inside Idaho: Interactive Numeric and Spatial Information Data...

    OpenEI (Open Energy Information) [EERE & EIA]

    GraphicMapChart Abstract Idaho GIS Clearinghouse Organization Idaho Geospatial Office Published Idaho Geospatial Office, Date Not Provided DOI Not Provided Check for DOI...

  10. spatial analysis | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    spatial analysis Home Geospatial Description: Discuss and explore geospatial data available on OpenEI. geospatial GIS spatial analysis Syndicate content...

  11. Four County Elec Member Corp | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    www.facebook.compagesFour-County-Electric-Membership-Corporation188316197857616?reftntnmn Outage Hotline: (888)368-7289 Outage Map: gis.fourcty.orgpubmap.html...

  12. September 2013 Most Viewed Documents for Mathematics And Computing...

    Office of Scientific and Technical Information (OSTI)

    22 NM WAIDS: A PRODUCED WATER QUALITY AND INFRASTRUCTURE GIS DATABASE FOR NEW MEXICO OIL PRODUCERS Martha Cather; Robert Lee; Ibrahim Gundiler; Andrew Sung; Naomi Davidson; ...

  13. Geographic Perspective on the Current Biomass Resource Availability in the United States

    SciTech Connect

    Milbrandt, A.

    2005-12-01

    The objective of this report is to estimate the biomass resources available in the United States and map the results using geographic information systems (GIS).

  14. Lessons Learned Quarterly Report, March 2014 | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    4 Lessons Learned Quarterly Report, March 2014 Welcome to the 78th quarterly report on lessons learned in the NEPA process. This issue examines some recent developments and practices in the use of GIS for NEPA and related environmental reviews. NEPAnode_carosel_500.jpeg NEPAnode Pilot Site Articles in this issue include: DOE NEPA Practitioners To Test NEPAnode Using GIS Tools for NEPA Analysis Select Past LLQR Articles on GIS and NEPA Using GIS To See the Big Picture and "Zoom In"

  15. Afghanistan-NREL Resource Maps and Toolkits | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    partnered with Afghanistan to develop high-resolution wind and solar resource maps and data products for Afghanistan. The data were output in Geographic Information Systems (GIS)...

  16. LEDSGP/sector/AFOLU | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    of its technical Reference Level training series. The videos demonstrate the use of ArcGIS and IDRISI software to link historical activity data to deforestation drivers (video...

  17. Microsoft PowerPoint - NTSF 2014 180(c) WG session_final [Compatibilit...

    Office of Environmental Management (EM)

    More economical More user-oriented Easier to maintain and update ESRI ArcGIS recommended as tool development platform 26 National Transportation Stakeholders...

  18. Microsoft PowerPoint - NTPAHWG_Jones [Compatibility Mode

    Office of Environmental Management (EM)

    More economical More user-oriented Easier to maintain and update ESRI ArcGIS recommended as tool development platform Analyze alternative routing criteria ...

  19. Evaluation of Geothermal Potential of Lightning Dock KGRA, New...

    OpenEI (Open Energy Information) [EERE & EIA]

    with the interpretation of information obtained from digitized map layers created in ArcGIS. The evaluation indicates that the Lightning Dock area has high geothermal potential...

  20. Renewable Energy and Defense Geospatial Database | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Database Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Renewable Energy and Defense Geospatial Database Abstract This database provides GIS data...

  1. Research Projects Addressing Technical Challenges to Environmentally...

    Energy Saver

    ... CO)--Development of GIS-Based Tool for Optimized Fluid Management in Shale Operations. ... reservoir dynamics, geomechanical issues, and subsurface effects of brine disposal. ...

  2. Sample manuscript showing style and formatting specifications...

    Office of Scientific and Technical Information (OSTI)

    value for each cell by computing a list of metrics based on applicable siting requirements using GIS data. The computed metrics include population density, solar energy ...

  3. Mapping suitability areas for concentrated solar power plants...

    Office of Scientific and Technical Information (OSTI)

    value for each cell by computing a list of metrics based on applicable siting requirements using GIS data. The computed metrics include population density, solar energy ...

  4. Oak Ridge Site Specific Advisory Board

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Expedite Milestones C. Recommendation on DOE Oak Ridge GIS Fact Sheets (C. Staley) D. Election of FY 2015 Board Officers (B. Price) VII. Responses to Recommendations & Comments (D. ...

  5. Searchlight Wind Energy Project FEIS Appendix A

    Office of Environmental Management (EM)

    Area Power Administration Substation) Prepared for: U.S. Department of Interior Bureau of Land Management Las ... GIS geographic information system kV kilovolt MW megawatt ...

  6. Program Updates | Department of Energy

    Energy Saver

    ... Working on the Wind River Indian ... Flume; LM Data Safer than Ever with ... Next Generation (NextGen) Geospatial Information System (GIS); State and Tribal ...

  7. NREL: Wind Research - Wind Resource Assessment

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    State Wind Maps International Wind Resource Maps Dynamic Maps, GIS Data, and Analysis Tools Due to the existence of special ... to anticipate wind generation levels and adjust the ...

  8. FY 2011-13 Budget Summary

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... and DBFT testing framework for project participants and stakeholders The Regional Geology GIS database and the GFM are complementary capabilities that can be applied to any ...

  9. Principal Characteristics of a Modern Grid

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Automation Geographic Information System (GIS) Micro-grid operations Advanced protection ... MODERN GRID S T R A T E G Y 15 15 Advanced Transmission Solutions Substation Automation ...

  10. Smart Grid Newsletter …TheRegulators Role in Grid ModernizationŽ...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... and it is deeply integrated with a distribution geographical information system (GIS). ... ATO includes substation automation, advanced protection and control, modeling, simulation ...

  11. Principal Characteristics of a Modern Grid

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Automation Geographic Information System (GIS) DER and Micro-grid operations Advanced ... MODERN GRID S T R A T E G Y 28 Advanced Transmission Solutions Substation Automation ...

  12. Microsoft Word - Whitepaper_Building A Smart Grid Business Case...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... trouble. * Geographic Information System (GIS) to provide the "where" dimension needed to ... Solutions include: * Substation automation that collects information and control ...

  13. Principal Characteristics of a Modern Grid

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Automation Geographic Information System (GIS) Micro-grid operations Advanced protection ... MODERN GRID S T R A T E G Y 21 21 Advanced Transmission Solutions Substation Automation ...

  14. LiDAR Technology | netl.doe.gov

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    After selecting potential sites, data from the Pennsylvania LiDAR data acquisition program was processed in geographic information system (GIS) software to identify historic energy ...

  15. NETL NATCARB - Atlas | netl.doe.gov

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... NATCARB is a relational database and geographic information system (GIS) that integrates CCS data from the RCSPs and other sources. NATCARB provides a national view of the carbon ...

  16. cialella-98.PDF

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    One division of external data is surface characterization data. These data are maintained in a Geographic Information System (GIS) and provide visual geographic data about the ARM ...

  17. All Job Postings

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    JOBS LISTED BY MOST RECENT GIS Specialist 23 Job Number: IRC51708 Organization: NIE-TSTelecommunication Services Posted: Fri, 26 Aug 2016 Engineering & Applied Nuclear Science ...

  18. Better Buildings Neighborhood Program Peer Exchange Call: Program...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... understand and identify candidates for upgrades of occupied commercial buildings? * Use GIS or partner with an agency or organization that can provide this type of spatial ...

  19. Mike West Potomac Hudson Engineering Sandy Enyeart SAIC

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Transportation Models used to estimate Impacts * TRAGIS (Transportation Routing Analysis Geographic Information System) - TRAGIS is a GIS-based transportation analysis computer ...

  20. A 3D-3C Reflection Seismic Survey and Data Integration to Identify...

    Energy.gov [DOE] (indexed site)

    Project Summary: Understanding geothermal reservoirs requires multi-discipline, integrated 3D GIS: Access down hole geophysical logs, surface geophysics, isotherms, isoresistivity ...

  1. DOE - NNSA/NFO -- FRMAC Acronyms

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    FRPCC Federal Radiological Preparedness Coordinating Committee FRP Federal Response Plan GIS Geographic Information System GPS Global Positioning System GSA General Services ...

  2. DOE - NNSA/NFO -- FRMAC Response Phases

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Additionally, an assessment scientist, GIS scientist, and web administrator join the call and prepare for requests for assistance. The initial requester will be contacted by a DOE ...

  3. abstract-hope2

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    This software has several important design elements. First, it has many of the important standard GIS capabilities to import shape layers, color them, change the opacity, and ...

  4. NREL: Wind Power Research - NREL's Geothermal Experts Present...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Charles Visser, geologist, NREL principal scientist, Geothermal Play Fairway Analysis of the Snake River Plain: Phase 1 and GIS Methodology for Geothermal Play Fairway Analysis: ...

  5. Feedstock Logistics Datasets from DOE's Bioenergy Knowledge Discovery...

    Office of Scientific and Technical Information (OSTI)

    access to research data and literature, GIS mapping tools, and collaborative networks. ... (EERE) Country of Publication: United States Language: English Subject: 9 - BIOMASS FUELS

  6. NETL Overview

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... What it isn't * Gadgets and Gizmos * Electric Vehicles * Wind Turbines * Time of Use rates * PMU's * Renewable Portfolio Standards * Internet * GIS Updated 02252008 It's not ...

  7. Renewables Portfolio Standard | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Renewable energy credit trades and purchases are tracked through the NEPOOL Generation Information System (NEPOOL-GIS). Renewables within the jurisdiction of New York,...

  8. Geographic Information System At Northern Basin & Range Region...

    OpenEI (Open Energy Information) [EERE & EIA]

    conventional and EGS capable geothermal systems by analyzing regional data in a GIS. Digital geothermal data will be made available to industry and researchers on a web site....

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

    OpenEI (Open Energy Information) [EERE & EIA]

    conventional and EGS capable geothermal systems by analyzing regional data in a GIS. Digital geothermal data will be made available to industry and researchers on a web site....

  10. Geographic Information System At Nw Basin & Range Region (Laney...

    OpenEI (Open Energy Information) [EERE & EIA]

    conventional and EGS capable geothermal systems by analyzing regional data in a GIS. Digital geothermal data will be made available to industry and researchers on a web site....

  11. Transmission/Resource Library/NEPA | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Library Jump to: navigation, search ResourceLibraryHeader.png Planning Public Involvement GIS Tools and Maps Environmental Resources and Mitigation NEPA MOUs General...

  12. Assessing Energy Resources Webinar Presentation Slides | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Web Mapping and Online GIS Applications for Renewable Energy Solar Energy - Capturing and Using Power and Heat from the Sun 2014 Commercial-Scale Renewable Energy Project ...

  13. Property:Contact | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Hydropower Federal Preservation Officer (Federal Energy Regulatory Agency) + Alabama Oil and Gas BoardWebsiteGISDatabaseDeveloper + Alabama Oil and Gas Board: WebsiteGIS...

  14. Renewable Energy Deployment in Colorado and the West: A Modeling...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Renewable Energy Deployment in Colorado and the West: A Modeling Sensitivity and GIS ... and Meghan Mooney National Renewable Energy Laboratory Technical Report NREL...

  15. Microsoft Word - 4-26-12 Final Testimony _Hoffman_.doc

    Energy.gov [DOE] (indexed site)

    ... that combine data from numerous sources into a single geographic information system (GIS). ... poles with guy wires, elevating substations and control rooms, and improving their ...

  16. [Article 1 of 7: Motivates and Includes the Consumer

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... The utilization of transformers at distribution substations is currently about 40%. At ... existing Geographical Information systems (GIS) will also enable a more efficient mobile ...

  17. Energy and Infrastructure Analysis Group: D-4, Decision Applications...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    economists Major customers: DHS, DOE, DoD, Intel Infrastructure Visualization and ... GIS, economists Major customers: DHS, DOE, DoD, other national labs International ...

  18. No Slide Title

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Web Map Application Glenn Russell (Geospatial Technical Lead) Idaho National Laboratory https:gis.inl.govregionalgeology What it is: * Interactive Web Map Application of ...

  19. Application of an online-coupled regional climate model, WRF-CAM5, over East Asia for examination of ice nucleation schemes. Part II. Sensitivity to heterogeneous ice nucleation parameterizations and dust emissions

    SciTech Connect

    Zhang, Yang; Chen, Ying; Fan, Jiwen; Leung, Lai -Yung

    2015-09-14

    Aerosol particles can affect cloud microphysical properties by serving as ice nuclei (IN). Large uncertainties exist in the ice nucleation parameterizations (INPs) used in current climate models. In this Part II paper, to examine the sensitivity of the model predictions to different heterogeneous INPs, WRF-CAM5 simulation using the INP of Niemand et al. (N12) [1] is conducted over East Asia for two full years, 2006 and 2011, and compared with simulation using the INP of Meyers et al. (M92) [2], which is the original INP used in CAM5. M92 calculates the nucleated ice particle concentration as a function of ice supersaturation, while N12 represents the nucleated ice particle concentration as a function of temperature and the number concentrations and surface areas of dust particles. Compared to M92, the WRF-CAM5 simulation with N12 produces significantly higher nucleated ice crystal number concentrations (ICNCs) in the northern domain where dust sources are located, leading to significantly higher cloud ice number and mass concentrations and ice water path, but the opposite is true in the southern domain where temperatures and moistures play a more important role in ice formation. Overall, the simulation with N12 gives lower downward shortwave radiation but higher downward longwave radiation, cloud liquid water path, cloud droplet number concentrations, and cloud optical depth. The increase in cloud optical depth and the decrease in downward solar flux result in a stronger shortwave and longwave cloud forcing, and decreases temperature at 2-m and precipitation. Changes in temperature and radiation lower surface concentrations of OH, O₃, SO₄²⁻, and PM2.5, but increase surface concentrations of CO, NO₂, and SO₂ over most of the domain. By acting as cloud condensation nuclei (CCN) and IN, dust particles have different impacts on cloud water and ice number concentrations, radiation, and temperature at 2-m and precipitation depending on

  20. Application of an online-coupled regional climate model, WRF-CAM5, over East Asia for examination of ice nucleation schemes. Part II. Sensitivity to heterogeneous ice nucleation parameterizations and dust emissions

    DOE PAGES [OSTI]

    Zhang, Yang; Chen, Ying; Fan, Jiwen; Leung, Lai -Yung

    2015-09-14

    Aerosol particles can affect cloud microphysical properties by serving as ice nuclei (IN). Large uncertainties exist in the ice nucleation parameterizations (INPs) used in current climate models. In this Part II paper, to examine the sensitivity of the model predictions to different heterogeneous INPs, WRF-CAM5 simulation using the INP of Niemand et al. (N12) [1] is conducted over East Asia for two full years, 2006 and 2011, and compared with simulation using the INP of Meyers et al. (M92) [2], which is the original INP used in CAM5. M92 calculates the nucleated ice particle concentration as a function of icemore » supersaturation, while N12 represents the nucleated ice particle concentration as a function of temperature and the number concentrations and surface areas of dust particles. Compared to M92, the WRF-CAM5 simulation with N12 produces significantly higher nucleated ice crystal number concentrations (ICNCs) in the northern domain where dust sources are located, leading to significantly higher cloud ice number and mass concentrations and ice water path, but the opposite is true in the southern domain where temperatures and moistures play a more important role in ice formation. Overall, the simulation with N12 gives lower downward shortwave radiation but higher downward longwave radiation, cloud liquid water path, cloud droplet number concentrations, and cloud optical depth. The increase in cloud optical depth and the decrease in downward solar flux result in a stronger shortwave and longwave cloud forcing, and decreases temperature at 2-m and precipitation. Changes in temperature and radiation lower surface concentrations of OH, O₃, SO₄²⁻, and PM2.5, but increase surface concentrations of CO, NO₂, and SO₂ over most of the domain. By acting as cloud condensation nuclei (CCN) and IN, dust particles have different impacts on cloud water and ice number concentrations, radiation, and temperature at 2-m and precipitation depending on whether the

  1. Improving Water Management: Applying ModelBuilder to site water impoundments using AEM survey data

    SciTech Connect

    Sams, J.I.; Lipinski, B.A.; Harbert, W.P.; Ackman, T.E.

    2007-01-01

    ArcGIS ModelBuilder was used to create a GIS-based decision support model that incorporated digital elevation data and electromagnetic geophysical results gathered by helicopter to screen potential sites for water disposal impoundments produced from coal bed natural gas.

  2. Gas-insulated substation reliability: present status and future trends. Final report

    SciTech Connect

    Boggs, S.A.; Chu, F.Y.; Mashikian, M.S.

    1986-02-01

    Gas-insulated substations (GIS) in the United States have not lived up to their original promise of high reliability. This comparison of US and overseas experience indicates that most US problems came from introducing the technology on high-voltage systems. As US experience with these systems grows, GIS reliability will increase.

  3. Power frequency electric and magnetic fields from a 230 kV gas-insulated substation

    SciTech Connect

    Wong, P.S.; Rind, T.M. ); Harvey, S.M.; Scheer, R.R. . Research Div.)

    1994-07-01

    Gas-insulated substations (GIS), owing to their compact nature, offer an attractive alternative to conventional substations where space is limited, such as in urban areas. Consequently, it is important to address the issue of environmental conditions in and around the GIS. This paper presents the results of a survey of power-frequency electric and magnetic fields in and around a 230 kV/28 kV GIS. The survey was designed to cover the electric and magnetic fields from the substation equipment and from the power lines and cables surrounding the substation. It also includes a determination of the shielding effect of the GIS bus sheath. The information provided should allow the prediction of electric and magnetic field levels from other GIS of similar design.

  4. Workshop on user experience with gas-insulated substations

    SciTech Connect

    Graybill, H.W.

    1981-12-01

    There is widespread interest among American and Canadian utilities in the interchange of operating and maintenance experience with gas-insulated substations (GIS). Those utilities who do not yet have GIS on their systems are likewise interested in the operating experience of those who do. A two-day workshop on GIS was held in Portland, Oregon, on July 30 and 31, 1981. The first day of the workshop was open to users only, and the agenda for the day consisted of user presentations on the following subjects: GIS station design and layout; specification and acquisition of GIS equipment; installation and commissioning; and operation and maintenance. On the second day, manufacturers were invited to present their experience, status, and progress in recent developments and improvements. The session was concluded with a general discussion of experience, problems, etc. No formal written papers were presented. The highlights of each verbal presentation and of ensuing discussion are presented in this report.

  5. Piezoelectric effect in InAs/InP quantum rod nanowires grown on silicon substrate

    SciTech Connect

    Anufriev, Roman; Chauvin, Nicolas Bru-Chevallier, Catherine; Khmissi, Hammadi; Naji, Khalid; Gendry, Michel; Patriarche, Gilles

    2014-05-05

    We report on the evidence of a strain-induced piezoelectric field in wurtzite InAs/InP quantum rod nanowires. This electric field, caused by the lattice mismatch between InAs and InP, results in the quantum confined Stark effect and, as a consequence, affects the optical properties of the nanowire heterostructure. It is shown that the piezoelectric field can be screened by photogenerated carriers or removed by increasing temperature. Moreover, a dependence of the piezoelectric field on the quantum rod diameter is observed in agreement with simulations of wurtzite InAs/InP quantum rod nanowire heterostructures.

  6. Effect of surface steps on the microstructure of lateral composition modulation

    SciTech Connect

    FOLLSTAEDT,DAVID M.; NORMAN,A.G.; RENO,JOHN L.; JONES,ERIC D.; TWESTEN,R.D.; LEE,STEPHEN R.; MOUTINHO,H.; MASCARENHAS,A.

    2000-03-23

    Growth of InAs/AlAs short-period superlattices on appropriately miscut (001) InP substrates is shown to alter the microstructure of composition modulation from a 2D organization of short compositionally enriched wires to a single dominant modulation direction and wire lengths up to {approximately}1 {micro}m. The effects of miscut are interpreted in terms of surface step orientation and character. The material is strongly modulated and exhibits intense optical emission. The 1D modulations appear potentially useful for new devices that take advantage of the preferred direction formed in the growth plane.

  7. Transparently wrap-gated semiconductor nanowire arrays for studies of gate-controlled photoluminescence

    SciTech Connect

    Nylund, Gustav; Storm, Kristian; Torstensson, Henrik; Wallentin, Jesper; Borgstrm, Magnus T.; Hessman, Dan; Samuelson, Lars

    2013-12-04

    We present a technique to measure gate-controlled photoluminescence (PL) on arrays of semiconductor nanowire (NW) capacitors using a transparent film of Indium-Tin-Oxide (ITO) wrapping around the nanowires as the gate electrode. By tuning the wrap-gate voltage, it is possible to increase the PL peak intensity of an array of undoped InP NWs by more than an order of magnitude. The fine structure of the PL spectrum reveals three subpeaks whose relative peak intensities change with gate voltage. We interpret this as gate-controlled state-filling of luminescing quantum dot segments formed by zincblende stacking faults in the mainly wurtzite NW crystal structure.

  8. 1/2 l angle 100 r angle l brace 100 r brace dislocation loops in a zinc blende structure

    SciTech Connect

    Chu, S.N.G.; Nakahara, S. )

    1990-01-29

    We report, for the first time, the identification of extrinsic dislocation loops lying on the {l brace}100{r brace} planes with {1/2}{l angle}100{r angle} types of Burgers vectors in a zinc blende structure in InGaAsP lattice matched to InP. These dislocation loops generated only in nonradiative recombination assisted point-defect motion process under intensed laser light, and form the {l angle}100{r angle} type dark line defects in degraded 1.3 {mu}m wavelength laser diodes.

  9. Light-splitting photovoltaic system utilizing two dual-junction solar cells

    SciTech Connect

    Xiong, Kanglin; Yang, Hui; Lu, Shulong; Dong, Jianrong; Zhou, Taofei; Wang, Rongxin; Jiang, Desheng

    2010-12-15

    There are many difficulties limiting the further development of monolithic multi-junction solar cells, such as the growth of lattice-mismatched material and the current matching constraint. As an alternative approach, the light-splitting photovoltaic system is investigated intensively in different aspects, including the energy loss mechanism and the choice of energy bandgaps of solar cells. Based on the investigation, a two-dual junction system has been implemented employing lattice-matched GaInP/GaAs and InGaAsP/InGaAs cells grown epitaxially on GaAs and InP substrates, respectively. (author)

  10. Intersubband absorption in CdSe/Zn{sub x}Cd{sub y}Mg{sub 1-x-y}Se self-assembled quantum dot multilayers

    SciTech Connect

    Shen, A.; Lu, H.; Charles, W.; Yokomizo, I.; Tamargo, M. C.; Franz, K. J.; Gmachl, C.; Zhang, S. K.; Zhou, X.; Alfano, R. R.; Liu, H. C.

    2007-02-12

    The authors report the observation of intersubband absorption in multilayers of CdSe/Zn{sub x}Cd{sub y}Mg{sub 1-x-y}Se self-assembled quantum dots. The samples were grown by molecular beam epitaxy on InP substrates. For samples with the CdSe dot layers doped with Cl and with the deposited CdSe equivalent layer thickness between 5.2 and 6.9 ML, peak absorption between 2.5 and 3.5 {mu}m was observed. These materials are promising for intersubband devices operating in the mid- and near-infrared ranges.

  11. Introduction to fifth international workshop on mercuric iodide nuclear radiation detectors

    SciTech Connect

    Schieber, M.

    1982-01-01

    Mercuric iodide is a wide bandgap semiconductor, with Eg approx. = 2.14 eV at room temperature. Therefore, HgI/sub 2/ is totally different from the well-studied, narrower gap, elemental semiconductors such as Si and Ge, and also different in its physical and chemical properties from the known semiconductor binary zinc-blend compounds such as GaAs or InP. The purpose of studies in the last decade was to further our understanding of HgI/sub 2/; recent progress is reported. (WHK)

  12. Investigation of temperature dependence of neutron yield and electron screening potential for the d(d, n){sup 3}He reaction proceeding in deuterides ZrD{sub 2} and TiD{sub 2}

    SciTech Connect

    Bystritsky, V. M.; Bystritskii, Vit. M.; Dudkin, G. N.; Filipowicz, M.; Gazi, S.; Huran, J.; Kobzev, A. P.; Mesyats, G. A.; Nechaev, B. A.; Padalko, V. N.; Parzhitskii, S. S.; Pen'kov, F. M.; Philippov, A. V.; Kaminskii, V. L.; Tuleushev, Yu. Zh.; Wozniak, J.

    2012-08-15

    The temperature dependence of the enhancement factor for the dd reaction proceeding in TiD{sub 2} and ZrD{sub 2} is investigated. The experiments were carried out at the Hall pulsed ion accelerator (INP, Polytechnic University, Tomsk, Russia) in the deuteron energy interval 7.0-12.0 keV and at temperatures ranging from 20 to 200 Degree-Sign C. The values obtained for the electron screening potentials indicate that the dd reaction enhancement factor does not depend on the target temperature in the range 20-200 Degree-Sign C. This result contradicts the conclusions drawn by the LUNA Collaboration from their work.

  13. Isoelectronic co-doping

    DOEpatents

    Mascarenhas, Angelo

    2004-11-09

    Isoelectronic co-doping of semiconductor compounds and alloys with deep acceptors and deep donors is used to decrease bandgap, to increase concentration of the dopant constituents in the resulting alloys, and to increase carrier mobilities lifetimes. Group III-V compounds and alloys, such as GaAs and GaP, are isoelectronically co-doped with, for example, N and Bi, to customize solar cells, thermal voltaic cells, light emitting diodes, photodetectors, and lasers on GaP, InP, GaAs, Ge, and Si substrates. Isoelectronically co-doped Group II-VI compounds and alloys are also included.

  14. An Incident Management Preparedness and Coordination Toolkit

    SciTech Connect

    Koch, Daniel B; Payne, Patricia W

    2012-01-01

    Although the use of Geographic Information Systems (GIS) by centrally-located operations staff is well established in the area of emergency response, utilization by first responders in the field is uneven. Cost, complexity, and connectivity are often the deciding factors preventing wider adoption. For the past several years, Oak Ridge National Laboratory (ORNL) has been developing a mobile GIS solution using free and open-source software targeting the needs of front-line personnel. Termed IMPACT, for Incident Management Preparedness and Coordination Toolkit, this ORNL application can complement existing GIS infrastructure and extend its power and capabilities to responders first on the scene of a natural or man-made disaster.

  15. Transient ground potential rise in gas insulated substations - assessment of shock hazard

    SciTech Connect

    Ford, G.L.; Geddes, L.A.

    1982-10-01

    Breakdowns and disconnect switch operations in gas insulated switchgear (GIS) generate short duration high potentials on the grounded GIS enclosures. These high potentials cause breakdowns between the GIS enclosures and other nearby grounded components, and have resulted in low voltage protection and control wiring failures and personnel shocks. The mechanism of the transient ground rise phenomenon and the equipment related problems are discussed in two companion papers. The question of the degree of personnel shock hazard imposed by transient ground rise is discussed in this paper. The physiological effects of short duration impulses are reviewed and it is concluded that further biomedical research is required.

  16. SMOOTH OIL & GAS FIELD OUTLINES MADE FROM BUFFERED WELLS

    Energy Information Administration (EIA) (indexed site)

    The VBA code provided at the bottom of this document is an updated version (from ArcGIS ... but with "smu" suffix added to name. The first layer must contain the well points ...

  17. Women @ Energy: Emily Zvolanek | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    @ Energy: Emily Zvolanek March 29, 2013 - 4:12pm Addthis Emily Zvolanek is a senior GIS analyst in the Environmental Science Division at Argonne National Laboratory, where she...

  18. Help:Citations | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    the Cite template. For example, to cite U.S. Renewable Energy Technical Potentials: A GIS-Based Analysis in this page, just add the following code: Cite|Billy's paper|U.S....

  19. File:SWERA-202.pdf | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    File File history File usage Solar: monthly and annual average global horizontal (GHI) GIS data at 40km resolution for Sri Lanka from NREL Size of this preview: 776 600...

  20. NREL: MapSearch

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    to easily search our collection of maps created by the Geographic Information System (GIS) team. Please use the search box and the filters on the left of the screen to limit...

  1. Kenya-DLR Cooperation | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    2001 to 2004 the German Aerospace Center (DLR) worked with Kenya on solar resource and GIS analysis as part of UNEP's Solar and Wind Energy Resource Assessment (SWERA) Programme....

  2. Ghana-DLR Resource Assessments | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    2001 to 2004 the German Aerospace Center (DLR) worked with Ghana on solar resource and GIS analysis as part of UNEP's Solar and Wind Energy Resource Assessment (SWERA) Programme....

  3. File:SWERA-253.pdf | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    File File history File usage Solar: monthly and annual average global horizontal (GHI) GIS data at 40km resolution for Nepal from NREL Size of this preview: 776 600 pixels....

  4. File:SWERA-212.pdf | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Solar: monthly global horizontal (GHI) GIS data at 10km resolution for Central America from NREL Size of this preview: 776 600 pixels. Full resolution (1,650 1,275...

  5. Map Data: Alternative Fuel Stations

    Energy.gov [DOE]

    The geospatial vector data has been compressed into one file.  You will need to uncompress it before using a geographic information systems (GIS) program to view the data.

  6. Poly 3D fault modeling scripts/data for permeability potential of Washington State geothermal prospects

    DOE Data Explorer

    Michael Swyer

    2015-02-05

    Matlab scripts/functions and data used to build Poly3D models and create permeability potential GIS layers for 1) Mount St Helen's, 2) Wind River Valley, and 3) Mount Baker geothermal prospect areas located in Washington state.

  7. File:SWERA-213.pdf | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    File usage Solar: annual average direct normal (DNI) GIS data at 10km resolution for Cuba from SUNY Size of this preview: 776 600 pixels. Full resolution (1,650 1,275...

  8. File:SWERA-214.pdf | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    usage Solar: annual average global horizontal (GHI) GIS data at 10km resolution for Cuba from SUNY Size of this preview: 776 600 pixels. Full resolution (1,650 1,275...

  9. Salt Wells Geothermal Area | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    by Gary Edmondo (MiniGIS, Inc., Reno, NV)24 modified by the Great Basin Center for Geothermal Energy to include symbols for geothermal surface features was used to actively...

  10. Regional Consumer Hydrogen Demand and Optimal Hydrogen Refueling Station Siting

    SciTech Connect

    Melendez, M.; Milbrandt, A.

    2008-04-01

    Using a GIS approach to spatially analyze key attributes affecting hydrogen market transformation, this study proposes hypothetical hydrogen refueling station locations in select subregions to demonstrate a method for determining station locations based on geographic criteria.

  11. Albany, OR * Anchorage, AK * Morgantown, WV * Pittsburgh, PA...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    and model data on high performance computers with pre-loaded software, such as ArcGIS, Petra, EarthVision, GoldSim, MATLAB, and other advanced analytical, statistical and...

  12. I

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    sample to develop call list 94 The resulting list of 167 trade allies was entered into ArcGIS, a geographic information system platform, and mapped using the zip code of each trade...

  13. Diapositiva 1

    OpenEI (Open Energy Information) [EERE & EIA]

    se utilizaron los siguientes parmetros en el mdulo de anlisis geoestadstico de ArcGis: Tamao del lag igual a 9000 metros. Para ello se utiliz la regla emprica de que...

  14. Albany, OR * Anchorage, AK * Morgantown, WV * Pittsburgh, PA...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    their datasets using top-of-the-line research computers with key software, such as ArcGIS, Petra, GoldSim, and Earthvision, among other advanced geostatistical and analytical...

  15. How do I display the Map of Wind Farms csv coordinates in ArcMap...

    OpenEI (Open Energy Information) [EERE & EIA]

    display and how it is stored. I agree that it is not an ideal format for using with ArcGIS, but this can be easily modified using your favorite spreadsheet editor. Since Excel...

  16. Integrated: Geospatial Toolkit for Honduras from NREL - Datasets...

    OpenEI (Open Energy Information) [EERE & EIA]

    and easy to use geographic toolkit that allows non-GIS users to relate the renewable energy resource (solar and wind) data to other geographic data, such as land use, protected...

  17. 1

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Ultimately, the data will be incorporated into the ARM Website pages and provide common maps across ACRF sites. 1 ArcGIS 9.1, ESRI, 380 New York St., Redlands, CA 92373-8100 USA ...

  18. Rail Coal Transportation Rates

    Annual Energy Outlook

    on research by the U.S. Department of Energy and was only incorporated into the GIS analysis below; it is not in any other elements of this report. See Methodology for greater...

  19. File:SWERA-203.pdf | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    search File File history File usage Solar: monthly and annual average latitude tilt GIS data at 40km for Sri Lanka from NREL Size of this preview: 776 600 pixels. Full...

  20. File:SWERA-254.pdf | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    to: navigation, search File File history File usage Solar: monthly and annual latitude tilt horizontal GIS data at 40km resolution for Nepal from NREL Size of this preview: 776 ...

  1. File:SWERA-248.pdf | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    8.pdf Jump to: navigation, search File File history File usage Solar: monthly latitude tilt GIS data at 40km resolution for Bangladesh from NREL Size of this preview: 776 600...

  2. FEI Nova 200 Dual-Beam SEM/FIB

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    milling * GIS for Pt deposition * Kleindiek nanomanipulator for specimen lift-out * Oxford Inca EDS system * AutoTEM, AutoFIB, and slice and view automation software Fabricating...

  3. The U.S. Department of Energy, National Nuclear Security Agency's Use of Geographic Information Systems for Nuclear Emergency Response Support

    SciTech Connect

    A. L. Guber

    2001-06-01

    The U.S, Department of Energy (DOE), National Nuclear Security Agency's (NNSA) Remote Sensing Laboratory (RSL) provides Geographic Information System (GIS) support during nuclear emergency response activities. As directed by the NNSA, the RSL GIS staff maintains databases and equipment for rapid field deployment during an emergency response. When on location, GIS operators provide information products to on-site emergency managers as well as to emergency managers at the DOE Headquarters (HQ) Emergency Operations Center (EOC) in Washington, D.C. Data products are derived from multiple information sources in the field including radiological prediction models, field measurements taken on the ground and from the air, and pertinent information researched on the Internet. The GIS functions as a central data hub where it supplies the information to response elements in the field, as well as to headquarters officials at HQ during emergency response activities.

  4. Question about Map of Wind Farms | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    farms using GIS software. Submitted by Wzeng on 13 July, 2012 - 13:59 1 answer Points: 1 Hi, there is a button labeled "Download CSV" below the map. A recent change was made to...

  5. Tags | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    local utility grid lagi green apps blog department of energy wind vision logo software solar land use REEEP REEGLE Texas contest Database gateway pv land use Colorado GIS tcdb...

  6. Renewable Energy Atlas of the United States

    SciTech Connect

    Kuiper, J.; Hlava, K.; Greenwood, H.; Carr, A.

    2013-12-13

    The Renewable Energy Atlas (Atlas) of the United States is a compilation of geospatial data focused on renewable energy resources, federal land ownership, and base map reference information. This report explains how to add the Atlas to your computer and install the associated software. The report also includes: A description of each of the components of the Atlas; Lists of the Geographic Information System (GIS) database content and sources; and A brief introduction to the major renewable energy technologies. The Atlas includes the following: A GIS database organized as a set of Environmental Systems Research Institute (ESRI) ArcGIS Personal GeoDatabases, and ESRI ArcReader and ArcGIS project files providing an interactive map visualization and analysis interface.

  7. DOE/NV/11718-985

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Fish and Wildlife Service FY Fiscal Year GIS Geographic Information System GPS Global ... 04-17 Cleanup of Rainier Mesa Substation (1 site, 1 building) None 1.20 (2.96) 0 ...

  8. Microsoft Word - 03NESHAP-FINAL.doc

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... This graphic was accomplished by application of Geographical Information System (GIS) ... Gate 700 South 0.99 x 10 0 33 0.066 16 Substation 3545 0.72 x 10 0 27 0.048 20 Schooner ...

  9. Technology Transfer for Brownfields Redevelopment Project

    Energy.gov [DOE]

    The U.S. Department of Energy has provided six computers to Prichard to improve its decision-making process through Geographic Information System (GIS) as a decision-making tool. The agency has...

  10. EM Issues Report Cards to Portsmouth Site Contractors | Department...

    Energy.gov [DOE] (indexed site)

    ... EM Reviews Portsmouth, Paducah Site Contractor Performance, Determines Award Fees Larry McCandless of Fluor-BWXT Portsmouth demonstrates the use of the GIS viewer. EM Site Puts ...

  11. Laboratory announces selection of Venture Acceleration Fund recipients

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    With Simtable, Google Earth and GIS data are projected onto the sand surface, allowing the user to hand-model the terrain elevation. Changes in the sand surface are an interactive ...

  12. Venture Acceleration Fund recipients

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    With Simtable, Google Earth and GIS data are projected onto the sand surface, allowing the user to hand-model the terrain elevation. Changes in the sand surface are an interactive ...

  13. Assessment of Energy Production Potential from Tidal Streams...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    The project documented in this report created a national database of tidal stream energy potential, as well as a GIS tool usable by industry in order to accelerate the market for ...

  14. PV modules modelling

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Group of Energy PVsyst Far shadings Horizon line, may be easily defined on-site or by GIS programs (For example by Solmetrics SunEye, Camera+Software Horiz'on, etc.) Treated in ...

  15. EV Explorer: Giving Employers and Employees Better Information...

    Energy.gov [DOE] (indexed site)

    cars in fueleconomy.gov * Change your destination * Find it at http:gis.its.ucdavis.eduevexplorer or search for "EV Explorer" in Google * Funded by the California Energy ...

  16. Better Buildings Neighborhood Program Multi-Family Peer Exchange...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... with the University of Texas and Apartment Finders on a website with an interactive GIS interface-the plan is to highlight EE properties on it The goal of the project is ...

  17. FILE

    Office of Legacy Management (LM)

    time ;% material, etc :antrat,' Purehase C3-,yer ,-*y:j' ;fir-T T .jG -" ti2-2ki' PE"IaD: -- - - - ---- -.- ---- s B Gis ' fM--1.L - ->;:*:->q+ f c.. -. ...

  18. Microsoft Word - S08568_CY2011 Annual Rpt

    Office of Legacy Management (LM)

    ecology data for the Site are available for several data types and are stored in the GIS on the servers in Grand Junction, Colorado. The types of ecological spatial data that ...

  19. 1

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Today, SimTable, an innovative company and technology housed at the Santa Fe Complex, is revolutionizing firefighter training. With SimTable, Google Earth and GIS data are ...

  20. Datasets - OpenEI Datasets

    OpenEI (Open Energy Information) [EERE & EIA]

    License Info DISCLAIMER NOTICE This GIS data was developed by the National Renewable Energy Laboratory... ZIP Wind: wind power density maps at 50m above ground and 1km...

  1. OMEGA EP Beamlines - Laboratory for Laser Energetics

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Tiled Grating Assemblies in the grating compressor chamber. The EP laser looking north ... Two GIS systems will be used to perform detection scans of damage sites on both upper and ...

  2. Final Report- Development of an Open Source Utility-Scale Solar Project Siting Tool

    Office of Energy Efficiency and Renewable Energy (EERE)

    PVMapper is an open source GIS application for utility-scale PV project siting that optimizes site comparisons for specific users based on their own customizations of weights for specific data layers, distance, and social integration and risk tools.

  3. Geographically-Based Infrastructure Analysis

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... * 125,000 Vehicles - 2% Vehicles (LA & Orange County 2002 Census) - 5% Existing Production ( PNNL Hydrogen Data BookNREL GIS DataCEC Website) * 250,000 Vehicles - 4% ...

  4. Assessment of Energy Production Potential from Tidal Streams in the United States

    SciTech Connect

    Haas, Kevin A.; Fritz, Hermann M.; French, Steven P.; Smith, Brennan T.; Neary, Vincent

    2011-06-29

    The project documented in this report created a national database of tidal stream energy potential, as well as a GIS tool usable by industry in order to accelerate the market for tidal energy conversion technology.

  5. Assessment of Energy Production Potential from Tidal Streams in the United States

    Office of Energy Efficiency and Renewable Energy (EERE)

    The project documented in this report created a national database of tidal stream energy potential, as well as a GIS tool usable by industry in order to accelerate the market for tidal energy conversion technology.

  6. NREL: Energy Analysis - Meghan Mooney

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Meghan Mooney Photo of Meghan Mooney Meghan Mooney is a member of the Data Analysis and Visualization Group in the Strategic Energy Analysis Center. GIS Scientist II On staff since June 2015 Phone number: 303-384-7315 E-mail: meghan.mooney@nrel.gov Areas of expertise Spatial Analysis Statistics Cartography Transportation/mobility Primary research interests Transportation and alternative fuels Mobility and behavioral dimensions of climate change VGI and mixed methods GIS Education and background

  7. NREL: Energy Analysis - Nick Grue

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Grue Nick Grue is a member of the Data Analysis and Visualization Group in the Strategic Energy Analysis Center. Scientist II - GIS On staff since June 2014 Phone number: 303-384-7278 E-mail: nick.grue@nrel.gov Areas of expertise Geospatial analysis Web GIS Primary research interests Open source energy data Web visualization of energy data Renewable energy policy Education and background training B.A. in geography and environmental science, University of Colorado at Denver, Denver, CO, 2012

  8. Surge propagation in gas insulated substation

    SciTech Connect

    Matsumura, S.; Nitta, T.

    1981-06-01

    Surge propagation performance in a 550 kV gas insulated substation is studied experimentally and by computer simulation using the Electro-Magnetic Transients Program. Extra capacitance added to the system by the components of GIS such as potential devices, branch buses, circuit breakers deform the wave shape of the travelling surges. A simple modeling technique to represent GIS in surge analysis is proposed and its applicability is proved. Paper No. 80 SM 658-5.

  9. Development of electronic potential and current transducers suitable for gas insulated switchgear and adequate for application to substation digital control systems

    SciTech Connect

    Tokoro, K.; Harumoto, Y.; Ida, Y.; Mukae, H.; Ohno, Y.; Shimada, M.; Yamamoto, H.; Yoshida, Y.

    1982-10-01

    Substation Digital Control System (SDCS) had been developed for the future system controlling the large scale power system. For application of SDCS to Gas Insulated Switchgear (GIS), electronic potential and current transducers fit for GIS have been developed. This equipment is composed of a capacitive dividing type potential transducer, a low burden current transformer, an analogue-to-digital conversion unit and an optical fiber signal transmit system. Good performance is confirmed by the application tests simulating the field circumstances.

  10. Gas-insulated substations

    SciTech Connect

    Reason, J.

    1993-09-01

    Utilities serving urban areas can no longer take the position that gas-insulated substations (GIS) are costly and unreliable. The only part of a GIS installation that's more costly than an air-insulated station is the equipment itself. Everything else - land, site preparation, maintenance, operation, etc - is less costly. And in more and more cases, land - the most expensive component - is simply not available.

  11. Carbon doping of III-V compound semiconductors

    SciTech Connect

    Moll, A.J.

    1994-09-01

    Focus of the study is C acceptor doping of GaAs, since C diffusion coefficient is at least one order of magnitude lower than that of other common p-type dopants in GaAs. C ion implantation results in a concentration of free holes in the valence band < 10% of that of the implanted C atoms for doses > 10{sup 14}/cm{sup 2}. Rutherford backscattering, electrical measurements, Raman spectroscopy, and Fourier transform infrared spectroscopy were amonth the techniques used. Ga co-implantation increased the C activation in two steps: first, the additional radiation damage creates vacant As sites that the implanted C can occupy, and second, it maintains the stoichiometry of the implanted layer, reducing the number of compensating native defects. In InP, the behavior of C was different from that in GaAs. C acts as n-type dopant in the In site; however, its incorporation by implantation was difficult to control; experiments using P co-implants were inconsistent. The lattice position of inactive C in GaAs in implanted and epitaxial layers is discussed; evidence for formation of C precipitates in GaAs and InP was found. Correlation of the results with literature on C doping in III-V semiconductors led to a phenomenological description of C in III-V compounds (particularly GaAs): The behavior of C is controlled by the chemical nature of C and the instrinsic Fermi level stabilization energy of the material.

  12. The nature and origin of lateral composition modulations in short-period strained-layer superlattices

    SciTech Connect

    NORMAN,A.G.; AHRENKIEL,S.P.; MOUTINHO,H.R.; BALLIF,C.; ALJASSIM,M.M.; MASCARENHAS,A.; FOLLSTAEDT,DAVID M.; LEE,STEPHEN R.; RENO,JOHN L.; JONES,ERIC D.; MIRECKI-MILLUNCHICK,J.; TWESTEN,R.D.

    2000-01-27

    The nature and origin of lateral composition modulations in (AlAs){sub m}(InAs){sub n} SPSs grown by MBE on InP substrates have been investigated by XRD, AFM, and TEM. Strong modulations were observed for growth temperatures between {approx} 540 and 560 C. The maximum strength of modulations was found for SPS samples with InAs mole fraction x (=n/(n+m)) close to {approx} 0.50 and when n {approx} m {approx} 2. The modulations were suppressed at both high and low values of x. For x >0.52 (global compression) the modulations were along the <100> directions in the (001) growth plane. For x < 0.52 (global tension) the modulations were along the two <310> directions rotated {approx} {+-} 27{degree} from [110] in the growth plane. The remarkably constant wavelength of the modulations, between {approx} 20--30 nm, and the different modulation directions observed, suggest that the origin of the modulations is due to surface roughening associated with the high misfit between the individual SPS layers and the InP substrate. Highly uniform unidirectional modulations have been grown, by control of the InAs mole fraction and growth on suitably offcut substrates, which show great promise for application in device structures.

  13. Photopumped red-emitting InP/In{sub 0.5}Al{sub 0.3}Ga{sub 0.2}P self-assembled quantum dot heterostructure lasers grown by metalorganic chemical vapor deposition

    SciTech Connect

    Ryou, J. H.; Dupuis, R. D.; Walter, G.; Kellogg, D. A.; Holonyak, N.; Mathes, D. T.; Hull, R.; Reddy, C. V.; Narayanamurti, V.

    2001-06-25

    We report the 300 K operation of optically pumped red-emitting lasers fabricated from InP self-assembled quantum dots embedded in In{sub 0.5}Al{sub 0.3}Ga{sub 0.2}P layers on GaAs (100) substrates grown by metalorganic chemical vapor deposition. Quantum dots grown at 650{degree}C on In{sub 0.5}Al{sub 0.3}Ga{sub 0.2}P layers have a high density on the order of 10{sup 10} cm{sup {minus}2} and the dominant size of individual quantum dots ranges from {similar_to}5 to {similar_to}10 nm for 7.5 monolayer {open_quotes}equivalent growth.{close_quotes} These InP/In{sub 0.5}Al{sub 0.3}Ga{sub 0.2}P quantum dot heterostructures are characterized by atomic force microscopy, high-resolution transmission electron microscopy, and photoluminescence. Laser structures are prepared from wafers having two vertically stacked InP quantum dot active layers within a 100-nm-thick In{sub 0.5}Al{sub 0.3}Ga{sub 0.2}P waveguide and upper and lower 600 nm InAlP cladding layers. We observe lasing at {lambda}{similar_to}680 nm at room temperature in optically pumped samples. {copyright} 2001 American Institute of Physics.

  14. Defect production during ion implantation of various A/sub III/B/sub V/ semiconductors

    SciTech Connect

    Wesch, W.; Wendler, E.; Goetz, G.; Kekelidse, N.P.

    1989-01-15

    The present paper gives a survey about the defect generation caused by ion implantation of GaAs, InAs, GaP, and InP. By combining Rutherford backscattering spectrometry, optical spectroscopy, and transmission electron microscopic methods, further information concerning the kinetics of the defect production as well as the type of defects created is obtained. Generally, the defect concentration in the region of implantation parameters investigated can be described by the energy density deposited into nuclear processes. Below critical values of the nuclear deposited energy density in GaAs weakly damaged layers containing point defects and point defect clusters are produced. With increasing nuclear deposited energy density an increasing number of amorphous zones is created due to manifold overlap of the initial defect clusters. The results indicate that in GaAs and InAs already at relatively low implantation temperatures, the amorphization occurs via homogeneous defect nucleation. The results obtained for GaP and InP, on the other hand, point at a remarkable contribution of heterogeneous defect nucleation already at room temperature, leading to amorphization at markedly lower nuclear deposited energy densities in spite of nearly identical values of the nuclear deposited energy. It is therefore concluded that defect recombination and annealing at room temperature is much less pronounced in the phosphides than in the arsenides.

  15. Semiconductor Quantum Dots and Quantum Dot Arrays and Applications of Multiple Exciton Generation to Third-Generation Photovoltaic Solar Cells

    SciTech Connect

    Nozik, Arthur J.; Beard, Matthew C.; Luther, Joseph M.; Law, Matt; Ellingson, Randy J.; Johnson, Justin C.

    2010-10-14

    Here, we will first briefly summarize the general principles of QD synthesis using our previous work on InP as an example. Then we will focus on QDs of the IV-VI Pb chalcogenides (PbSe, PbS, and PbTe) and Si QDs because these were among the first QDs that were reported to produce multiple excitons upon absorbing single photons of appropriate energy (a process we call multiple exciton generation (MEG)). We note that in addition to Si and the Pb-VI QDs, two other semiconductor systems (III-V InP QDs(56) and II-VI core-shell CdTe/CdSe QDs(57)) were very recently reported to also produce MEG. Then we will discuss photogenerated carrier dynamics in QDs, including the issues and controversies related to the cooling of hot carriers and the magnitude and significance of MEG in QDs. Finally, we will discuss applications of QDs and QD arrays in novel quantum dot PV cells, where multiple exciton generation from single photons could yield significantly higher PV conversion efficiencies.

  16. High-performance, lattice-mismatched InGaAs/InP monolithic interconnected modules (MIMs)

    SciTech Connect

    Fatemi, Navid S.; Wilt, David M.; Hoffman, Richard W., Jr.; Stan, Mark S.; Weizer, Victor G.; Jenkins, Phillip P.; Khan, Osman S.; Murray, Christopher S.; Scheiman, David; Brinker, David

    1998-10-01

    High performance, lattice-mismatched p/n InGaAs/lnP monolithic interconnected module (MIM) structures were developed for thermophotovoltaic (TPV) applications. A MIM device consists of several individual InGaAs photovoltaic (PV) cells series-connected on a single semi-insulating (S.I.) InP substrate. Both interdigitated and conventional (i.e., non-interdigitated) MIMs were fabricated. The energy bandgap (Eg) for these devices was 0.60 eV. A compositionally step-graded InPAs buffer was used to accommodate a lattice mismatch of 1.1% between the active InGaAs cell structure and the InP substrate. 1x1-cm, 15-cell, 0.60-eV MIMs demonstrated an open-circuit voltage (Voc) of 5.2 V (347 mV per cell) and a fill factor of 68.6% at a short-circuit current density (Jsc) of 2.0 A/cm{sup 2}, under flashlamp testing. The reverse saturation current density (Jo) was 1.6x10{sup {minus}6} A/cm{sup 2}. Jo values as low as 4.1x10{sup {minus}7} A/cm{sup 2} were also observed with a conventional planar cell geometry.

  17. Direct growth of single-crystalline III–V semiconductors on amorphous substrates

    DOE PAGES [OSTI]

    Chen, Kevin; Kapadia, Rehan; Harker, Audrey; Desai, Sujay; Seuk Kang, Jeong; Chuang, Steven; Tosun, Mahmut; Sutter-Fella, Carolin M.; Tsang, Michael; Zeng, Yuping; et al

    2016-01-27

    The III–V compound semiconductors exhibit superb electronic and optoelectronic properties. Traditionally, closely lattice-matched epitaxial substrates have been required for the growth of high-quality single-crystal III–V thin films and patterned microstructures. To remove this materials constraint, here we introduce a growth mode that enables direct writing of single-crystalline III–V’s on amorphous substrates, thus further expanding their utility for various applications. The process utilizes templated liquid-phase crystal growth that results in user-tunable, patterned micro and nanostructures of single-crystalline III–V’s of up to tens of micrometres in lateral dimensions. InP is chosen as a model material system owing to its technological importance. Themore » patterned InP single crystals are configured as high-performance transistors and photodetectors directly on amorphous SiO2 growth substrates, with performance matching state-of-the-art epitaxially grown devices. In conclusion, the work presents an important advance towards universal integration of III–V’s on application-specific substrates by direct growth.« less

  18. The SPectrometer for Ice Nuclei (SPIN): An instrument to investigate ice nucleation

    DOE PAGES [OSTI]

    Garimella, Sarvesh; Kristensen, Thomas Bjerring; Ignatius, Karolina; Welti, Andre; Voigtlander, Jens; Kulkarni, Gourihar R.; Sagan, Frank; Kok, Gregory Lee; Dorsey, James; Nichman, Leonid; et al

    2016-07-06

    The SPectrometer for Ice Nuclei (SPIN) is a commercially available ice nucleating particle (INP) counter manufactured by Droplet Measurement Technologies in Boulder, CO. The SPIN is a continuous flow diffusion chamber with parallel plate geometry based on the Zurich Ice Nucleation Chamber and the Portable Ice Nucleation Chamber. This study presents a standard description for using the SPIN instrument and also highlights methods to analyze measurements in more advanced ways. It characterizes and describes the behavior of the SPIN chamber, reports data from laboratory measurements, and quantifies uncertainties associated with the measurements. Experiments with ammonium sulfate are used to investigatemore » homogeneous freezing of deliquesced haze droplets and droplet breakthrough. Experiments with kaolinite, NX illite, and silver iodide are used to investigate heterogeneous ice nucleation. SPIN nucleation results are compared to those from the literature. A machine learning approach for analyzing depolarization data from the SPIN optical particle counter is also presented (as an advanced use). Altogether, we report that the SPIN is able to reproduce previous INP counter measurements.« less

  19. Radio interference and transient field from gas-insulated substations

    SciTech Connect

    Harvey, S.M.; Wong, P.S.; Balma, P.M.

    1995-01-01

    Gas-insulated substations (GIS), owing to their compact nature, offer an attractive alternative to conventional substations in areas where space is limited, such as in urban areas. Consequently, it is important to address the issue of environmental conditions within the substation and in the surrounding areas. This paper reports the result of radio interference (RI) and transient field measurements at two GIS in Ontario, Canada. For comparison with RI levels taken at the GIS, RI levels outside two hospitals in the Toronto area were also measured. The transient field study covers electromagnetic interference (EMI) levels generated during switching operations, and includes measurements inside and outside the GIS. Measurements show that RI levels from the GIS were either below background levels, or contributed little to the background. RI levels outside the GIS and the hospitals were similar. Peak transient field values up to 580 V/m were measured inside the station building, and dropped to background values of 10 V/m at about 120 m from the station. The transient field (E) dropped off at a rate of 3/2 power with distance (d) from the air-insulated 115 kV bus, i.e. E {proportional_to} d{sup {minus}1.5}.

  20. Applying geographic information systems to support strategic environmental assessment: Opportunities and limitations in the context of Irish land-use plans

    SciTech Connect

    Gonzalez, Ainhoa; Gilmer, Alan; Foley, Ronan; Sweeney, John; Fry, John

    2011-04-15

    The strengthening of spatial database infrastructures, further promoted by the INSPIRE Directive adopted in 2007, has led to an increased use of spatial data in planning and decision-making. Given that land-use plans are intrinsically spatial, such evidence and approaches can significantly benefit plan-making. A spatial framework could especially support the specific Strategic Environmental Assessment (SEA) aspects of the plan-making process. Spatial tools such as Geographic Information Systems (GIS) are particularly well-placed to support the environmental integration sought in SEA by providing evidence through the spatial assessment of multiple environmental datasets. Moreover, GIS bring the opportunity to augment conventional assessment techniques (e.g. matrix-based assessments) by acting as visual mediators of spatial knowledge and by providing an effective tool for the spatial and temporal analysis of environmental impacts. This paper presents a GIS-based approach to SEA (GISEA), and analyses the above premise by evaluating the barriers, limitations, opportunities and benefits of its implementation. The GISEA approach has been applied to seven development plans of differing scales in the Republic of Ireland. The results of the case studies revealed that current issues in SEA (e.g. restricted time-frames and institutional arrangements) condition the implementation of a GIS-based approach. Moreover, GIS expertise, data accessibility and quality remain limiting factors to an effective GIS application in SEA. However, the results also confirmed that GIS have the potential to increase the objectivity and accuracy of the assessment, enhance both the understanding of environmental and planning considerations and the delivery of information, and, therefore, help to improve the effectiveness of SEA practice.

  1. Recent technology of size-reduction and large interrupting performance in development of gas circuit breakers

    SciTech Connect

    Nakamoto, T.; Toyoda, T.; Matsushita, K.; Tsuchiya, M.; Toda, H.; Hisamatsu, K.

    1995-12-31

    With puffer-type SF{sub 6} gas circuit breakers (GCB) in Japan, practical use at the rated voltage of 72kV was achieved in the latter half of the 1960s. Since then development has been promoted toward ever higher voltages and capacities. In the mid-1970s, 550kV 4-break GCBs came into practical use and GCBs have become the predominant high-voltage circuit breakers, covering all rated voltages. However, growing demand for electric energy and greater compactness led to the need for a higher interrupting performance per break. On the other hand, because of its high reliability and advantage of enabling substations to be much smaller, gas insulated switchgear (GIS) prevailed rapidly in Japan where it is difficult to acquire land for substations. In urban areas in particular, where substations must be constructed underground, there is demand for smaller GIS. To reduce the size of a GIS unit, studies are reviewing specifications such as temperature rise and insulation level or remodeling components into composites. Since the size of the GCB as the principal component of the GIS unit has a great effect on the entire GIS unit, when reducing the size of a GIS unit, it seems to be effective to make GCB smaller. GCB size can possibly be reduced by increasing the interrupting capacity per GCB break and by housing the 3-phase interrupting chamber in one tank, and this is further likely to help produce a compact GIS unit with the bus size greatly reduced if the GIS unit is designed skillfully. The GCB having the highest performance per break, at present, is the 550kV-63kA 1-break GCB. Three-phase common enclosed GCB up to a rated voltage of 300kV has been made practical. These GCBs enable GIS installation areas to be reduced to about 60% and 75% respectively. This paper presents the latest technologies employed for 550kV 1-break GCB and 300kV 3-phase common enclosed GCB to achieve higher performance and greater compactness.

  2. Object-oriented Geographic Information System Framework

    Energy Science and Technology Software Center

    2003-03-01

    JeoViewer is an intelligent object-oriented geographic information system (GIS) framework written in Java that provides transparent linkage to any object’s data, behaviors, and optimized spatial geometry representation. Tools are provided for typical GIS functionality, data ingestion, data export, and integration with other frameworks. The primary difference between Jeo Viewer and traditional GIS systems is that traditional GIS systems offer static views of geo-spatial data while JeoViewer can be dynamically coupled to models and live datamore » streams which dynamically change the state of the object which can be immediately represented in JeoViewer. Additionally, JeoViewer’s object-oriented paradigm provides a more natural representation of spatial data. A rich layer hierarchy allows arbitrary grouping of objects based on any relationship as well as the traditional GIS vertical ordering of objects. JeoViewer can run as a standalone product, extended with additional analysis functionality, or embedded in another framework.« less

  3. Fault analysis in gas-insulated equipment. Final report

    SciTech Connect

    Chu, F.Y.; Boggs, S.A.; Law, C.K.; Williamson, A.

    1982-02-01

    The results of a study on fault location techniques and damage analysis in Gas Insulated Substations (GIS) are presented. The objectives of the EPRI sponsored project are to gain a better understanding of in-service faults in GIS, to investigate the feasibility of thermal and electromagnetic techniques for locating faults and to develop prototype instrumentations for fault locations in GIS. The techniques developed and the information obtained in this project will be valuable to the maintenance engineer to plan for fast clean-up and repair after a fault, avoiding costly system downtime. The origins of the fast transient phenomena associated with initial breakdown of the gas and the thermal signature of the power arc after fault initiation in GIS were investigated with special emphasis to its application to fault location. The applications of an infrared, thermal imaging system and temperature sensitive paint to locate in-service faults with power follow-through were demonstrated, and an IR fault location system was developed. Both techniques are non-invasive and require no modification of existing GIS. Dynamic arc behaviour in a co-axial geometry and the thermal phenomena, such as pressure rise and enclosure burn-through associated with a power arc fault were investigated. A systematic framework to predict burn-through probability based on fault current distribution was developed. A discussion on the fault consequences and the damage assessment techniques is included.

  4. Substrate structures for InP-based devices

    DOEpatents

    Wanlass, Mark W.; Sheldon, Peter

    1990-01-01

    A substrate structure for an InP-based semiconductor device having an InP based film is disclosed. The substrate structure includes a substrate region having a lightweight bulk substrate and an upper GaAs layer. An interconnecting region is disposed between the substrate region and the InP-based device. The interconnecting region includes a compositionally graded intermediate layer substantially lattice-matched at one end to the GaAs layer and substantially lattice-matched at the opposite end to the InP-based film. The interconnecting region further includes a dislocation mechanism disposed between the GaAs layer and the InP-based film in cooperation with the graded intermediate layer, the buffer mechanism blocking and inhibiting propagation of threading dislocations between the substrate region, and the InP-based device.

  5. Method of making organic light emitting devices

    DOEpatents

    Shiang, Joseph John; Janora, Kevin Henry; Parthasarathy, Gautam; Cella, James Anthony; Chichak, Kelly Scott

    2011-03-22

    The present invention provides a method for the preparation of organic light-emitting devices comprising a bilayer structure made by forming a first film layer comprising an electroactive material and an INP precursor material, and exposing the first film layer to a radiation source under an inert atmosphere to generate an interpenetrating network polymer composition comprising the electroactive material. At least one additional layer is disposed on the reacted first film layer to complete the bilayer structure. The bilayer structure is comprised within an organic light-emitting device comprising standard features such as electrodes and optionally one or more additional layers serving as a bipolar emission layer, a hole injection layer, an electron injection layer, an electron transport layer, a hole transport layer, exciton-hole transporting layer, exciton-electron transporting layer, a hole transporting emission layer, or an electron transporting emission layer.

  6. Electrical Properties of Er-doped In0.53Ga0.47As

    SciTech Connect

    Burke, Peter G.; Lu, Hong; Rudawski, Nicholas G.; Stemmer, Susanne; Gossard, Arthur C.; Bahk, Je-Hyeong; Bowers, John E.

    2011-03-03

    The electrical properties of In0.53Ga0.47As As thin films Er-doped to concentrations of 1.51017 7.21020 cm-3 grown by molecular beam epitaxy at 490 C on (001) InP substrates were studied. Electrical conductivity, carrier density, and carrier mobility as a function of Er doping were measured by Hall effect at temperatures of 20750 K. Additionally, high-angle annular dark-field scanning transmission electron microscopy and infrared absorption spectroscopy confirmed the presence of epitaxially embedded ErAs nanoparticles at Er concentrations ?81019 cm-3. The observed electrical properties are discussed in terms of the dependence of ErAs nanoparticle formation with Er doping.

  7. Wavelength controlled multilayer-stacked linear InAs quantum dot arrays on InGaAsP/InP (100) by self-organized anisotropic strain engineering: A self-ordered quantum dot crystal

    SciTech Connect

    Sritirawisarn, N.; Otten, F. W. M. van; Eijkemans, T. J.; Noetzel, R.

    2008-09-29

    Multilayer-stacked linear InAs quantum dot (QD) arrays are created on InAs/InGaAsP superlattice templates formed by self-organized anisotropic strain engineering on InP (100) substrates in chemical beam epitaxy. Stacking of the QD arrays with identical emission wavelength in the 1.55 {mu}m region at room temperature is achieved through the insertion of ultrathin GaAs interlayers beneath the QDs with increasing interlayer thickness in successive layers. The increment in the GaAs interlayer thickness compensates the QD size/wavelength increase during strain correlated stacking. This is the demonstration of a three-dimensionally self-ordered QD crystal with fully controlled structural and optical properties.

  8. Low-density InP-based quantum dots emitting around the 1.5??m telecom wavelength range

    SciTech Connect

    Yacob, M.; Reithmaier, J. P.; Benyoucef, M.

    2014-01-13

    The authors report on low-density InAs quantum dots (QDs) grown on AlGaInAs surfaces lattice matched to InP using post-growth annealing by solid-source molecular beam epitaxy. Clearly spatially separated QDs with a dot density of about 5??10{sup 8} cm{sup ?2} are obtained by using a special capping technique after the dot formation process. High-resolution micro-photoluminescence performed on optimized QD structures grown on distributed Bragg reflector exhibits single QD emissions around 1.5??m with narrow excitonic linewidth below 50??eV, which can be used as single photon source in the telecom wavelength range.

  9. Birefringence in the transparency region of GaAs/AlAs multiple quantum wells

    SciTech Connect

    Sirenko, A.A.; Etchegoin, P.; Fainstein, A.; Eberl, K.; Cardona, M.

    1999-09-01

    Birefringence measurements for in-plane propagation of light below the absorption edge in GaAs/AlAs multiple quantum wells (MQW{close_quote}s) are reported for different well/barrier widths. A remarkable drop in the low-frequency limit of the birefringence has been observed for MQW structures with small periods and ascribed to the presence of local fields. The temperature dependence of the birefringence is also studied and complementary results in InP quantum dot structures are also presented. The latter exhibit a strong resonant birefringence, which can be explained by the reduced dimensionality in the joint density of states for optical transitions in the dots. {copyright} {ital 1999} {ital The American Physical Society}

  10. Optical set-reset latch

    DOEpatents

    Skogen, Erik J.

    2013-01-29

    An optical set-reset (SR) latch is formed from a first electroabsorption modulator (EAM), a second EAM and a waveguide photodetector (PD) which are arranged in an optical and electrical feedback loop which controls the transmission of light through the first EAM to latch the first EAM in a light-transmissive state in response to a Set light input. A second waveguide PD controls the transmission of light through the second EAM and is used to switch the first EAM to a light-absorptive state in response to a Reset light input provided to the second waveguide PD. The optical SR latch, which may be formed on a III-V compound semiconductor substrate (e.g. an InP or a GaAs substrate) as a photonic integrated circuit (PIC), stores a bit of optical information and has an optical output for the logic state of that bit of information.

  11. Comparative analysis of quantum cascade laser modeling based on density matrices and non-equilibrium Green's functions

    SciTech Connect

    Lindskog, M. Wacker, A.; Wolf, J. M.; Liverini, V.; Faist, J.; Trinite, V.; Maisons, G.; Carras, M.; Aidam, R.; Ostendorf, R.

    2014-09-08

    We study the operation of an 8.5 μm quantum cascade laser based on GaInAs/AlInAs lattice matched to InP using three different simulation models based on density matrix (DM) and non-equilibrium Green's function (NEGF) formulations. The latter advanced scheme serves as a validation for the simpler DM schemes and, at the same time, provides additional insight, such as the temperatures of the sub-band carrier distributions. We find that for the particular quantum cascade laser studied here, the behavior is well described by simple quantum mechanical estimates based on Fermi's golden rule. As a consequence, the DM model, which includes second order currents, agrees well with the NEGF results. Both these simulations are in accordance with previously reported data and a second regrown device.

  12. 100 mm Engineered InP-on-Si Laminate Substrates for InP-based Multijunction Solar Cells

    SciTech Connect

    Atwater, Harry

    2012-06-25

    The project focused on fabrication of InP/Si laminate substrates as templates for growth of InGaAsP/InGaAs and InAlAs/InGaAsP/InGaAs multijunction solar cells. InP/Si template substrates were developed and used as templates for InGaAs solar growth. A novel feature of the program was development of the virtual substrate template, which enables a substrate to be formed with a lattice constant intermediate between those of GaAs and InP. Large-area virtual substrate templates were formed by transfer and bonding of dislocation free InGaAs films wafer onto silicon substrates.

  13. Microstructure of compositionally modulated InAlAs

    SciTech Connect

    Twesten, R.D.; Millunchick, J.M.; Lee, S.R.; Follstaedt, D.M.; Jones, E.D.; Ahrenkiel, S.P.; Zhang, Y.; Mascarenhas, A.

    1996-12-31

    The authors have observed spontaneous, lateral composition modulation in tensile InAlAs alloy films grown as short-period superlattices on InP (001). They have analyzed these films using transmission electron microscopy, x-ray reciprocal space mapping, and polarized photoluminescence spectroscopy. They find the growth front is nonplanar, exhibiting {approximately} 2 nm deep cusps aligned with the In-rich regions of the compositionally modulated films. In addition to the measured 15 nm wavelength modulation in the [110] direction, a modulation of 30 nm wavelength is seen in the orthogonal [1{bar 1}0] direction. The photoluminescence from the modulated layer is strongly polarized and red shifted by 0.22 eV.

  14. CdSe self-assembled quantum dots with ZnCdMgSe barriers emitting throughout the visible spectrum

    SciTech Connect

    Perez-Paz, M. Noemi; Zhou Xuecong; Munoz, Martin; Lu Hong; Sohel, Mohammad; Tamargo, Maria C.; Jean-Mary, Fleumingue; Akins, Daniel L.

    2004-12-27

    Self-assembled quantum dots of CdSe with ZnCdMgSe barriers have been grown by molecular beam epitaxy on InP substrates. The optical and microstructural properties were investigated using photoluminescence (PL) and atomic force microscopy (AFM) measurements. Control and reproducibility of the quantum dot (QD) size leading to light emission throughout the entire visible spectrum range has been obtained by varying the CdSe deposition time. Longer CdSe deposition times result in a redshift of the PL peaks as a consequence of an increase of QD size. AFM studies demonstrate the presence of QDs in uncapped structures. A comparison of this QD system with CdSe/ZnSe shows that not only the strain but also the chemical properties of the system play an important role in QD formation.

  15. Accumulation capacitance frequency dispersion of III-V metal-insulator-semiconductor devices due to disorder induced gap states

    SciTech Connect

    Galatage, R. V.; Zhernokletov, D. M.; Dong, H.; Brennan, B.; Hinkle, C. L.; Wallace, R. M.; Vogel, E. M.

    2014-07-07

    The origin of the anomalous frequency dispersion in accumulation capacitance of metal-insulator-semiconductor devices on InGaAs and InP substrates is investigated using modeling, electrical characterization, and chemical characterization. A comparison of the border trap model and the disorder induced gap state model for frequency dispersion is performed. The fitting of both models to experimental data indicate that the defects responsible for the measured dispersion are within approximately 0.8 nm of the surface of the crystalline semiconductor. The correlation between the spectroscopically detected bonding states at the dielectric/III-V interface, the interfacial defect density determined using capacitance-voltage, and modeled capacitance-voltage response strongly suggests that these defects are associated with the disruption of the III-V atomic bonding and not border traps associated with bonding defects within the high-k dielectric.

  16. Spectral utilization in thermophotovoltaic devices

    SciTech Connect

    Clevenger, M.B.; Murray, C.S.

    1997-12-31

    Multilayer assemblies of epitaxially-grown, III-V semiconductor materials are being investigated for use in thermophotovoltaic (TPV) energy conversion applications. It has been observed that thick, highly-doped semiconductor layers within cell architectures dominate the parasitic free-carrier absorption (FCA) of devices at wavelengths above the bandgap of the semiconductor material. In this work, the wavelength-dependent, free-carrier absorption of p- and n-type InGaAs layers grown epitaxially onto semi-insulating (SI) InP substrates has been measured and related to the total absorption of long-wavelength photons in thermophotovoltaic devices. The optical responses of the TPV cells are then used in the calculation of spectral utilization factors and device efficiencies.

  17. Optical data latch

    DOEpatents

    Vawter, G. Allen

    2010-08-31

    An optical data latch is formed on a substrate from a pair of optical logic gates in a cross-coupled arrangement in which optical waveguides are used to couple an output of each gate to an photodetector input of the other gate. This provides an optical bi-stability which can be used to store a bit of optical information in the latch. Each optical logic gate, which can be an optical NOT gate (i.e. an optical inverter) or an optical NOR gate, includes a waveguide photodetector electrically connected in series with a waveguide electroabsorption modulator. The optical data latch can be formed on a III-V compound semiconductor substrate (e.g. an InP or GaAs substrate) from III-V compound semiconductor layers. A number of optical data latches can be cascaded to form a clocked optical data shift register.

  18. After Action Report - Kazakhstan NSDD July 2015

    SciTech Connect

    Fox, Caterina; Eppich, Gary; Kips, Ruth; Knight, Kim; Belian, Anthony; Gray, Paul; Canazaro, B.

    2015-07-25

    On Monday 20 July, Caterina Fox, Ruth Kips and Kim Knight were invited to participate in Kazakhstan's nuclear material inventory management working group meeting coordinated by Alexander Vasilliev as nuclear forensics subject matter experts. The meeting included participants from Kazakhstan's nuclear regulatory agency (CAESC, the Committee on Atomic and Energetic Supervision and Control) and 3 institutes 1. Institute of Nuclear Physics, INP (Almaty), 2. National Nuclear Center, NNC (Kurchatov), and 3. Ulba Metallurgical Plant, UMP (Oskemen). CAESC requested attendance of an MC&A expert, an IT Specialist, and a Physical Security Specialist from each site. The general meeting concerned considerations for creating unified or compatible systems for nuclear material inventory management. NSDD representatives provided an overview of nuclear forensics and presented considerations for developments of inventory management that might be synergistic with future consideration of development of a National Nuclear Forensics Library to support nuclear forensics investigations.

  19. Jack Deslippe Application Performance Group

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Application Performance Group NERSC Optimizing Excited-State Electronic-Structure Codes for Intel Knights Landing What is GW Materials: InSb, InAs Ge GaSb Si InP GaAs CdS AlSb, AlAs CdSe, CdTe BP SiC C 60 GaP AlP ZnTe, ZnSe c-GaN, w-GaN InS w-BN, c-BN diamond w-AlN LiCl Fluorite LiF DFT GW The "GW" method is an accurate approach for simulate the "excited state" properties of materials. Examples: - What happens when you add or remove an electron from a system - How do

  20. Optical and electrical characterization of InGaBiAs for use as a mid-infrared optoelectronic material

    SciTech Connect

    Petropoulos, J. P.; Zhong, Y.; Zide, J. M. O.

    2011-07-18

    In{sub 0.53}Ga{sub 0.47}Bi{sub x}As{sub 1-x} films were grown on InP:Fe substrates by molecular beam epitaxy, with Bi concentrations up to x = 3.60%. Bi content in the epilayers was determined by Rutherford backscattering spectroscopy, and channeling measurements show Bi incorporating substitutionally. Unlike previous work, electrical and optical data are obtained for all samples. A redshift in peak wavelength of about 56 meV/%Bi was observed using spectrophotometry. The valence band anti-crossing model is applied, showing In{sub y}Ga{sub 1-y}Bi{sub x}As{sub 1-x} lattice-matched to InP is possible by varying the composition, with a theoretical cutoff wavelength of about 6 {mu}m.