Published By National Aeronautics and Space Administration
Issued más de 9 años ago
Summary
Description
MERIS is a programmable, medium-spectral resolution, imaging spectrometer operating in the solar reflective spectral range. Fifteen spectral bands can be selected by ground command. MERIS is designed so that it can acquire data over the Earth whenever illumination conditions are suitable. The instrument's 68.5° field of view around nadir covers a swath width of 1150 km. This wide field of view is shared between five identical optical modules arranged in a fan shape configuration. The instrument is capable of 300m resolution delivered via direct broadcast, but collects a reduced resolution (~1.2km) global coverage data set on-board the spacecraft. This product contains the geophysical data products in sensor coordinates at the reduced resolution. The products included: chlorophyll a, remote sensing reflectance in the visible bands, aerosol optical depth at 86nm, aerosol angstrom parameter, diffuse attenuation at 490nm, particulate inorganic carbon concentration, particulate organic carbon concentration and the Morel CDOM index. These data were processed to Level 2 using NASA's OBPG l2gen software.
Published By US Fish and Wildlife Service, Department of the Interior
Issued más de 9 años ago
Summary
Description
This report discusses water needs and availability in western Nevada. There is not enough usable water from the Truckee and Carson Rivers to satisfy the demands of the Lake Tahoe area, all the irrigated areas along the Carson and Truckee Rivers, Pyramid Lake and the Wildlife Management Areas. This is on the basis of the present status of development, regardless of whether the water was more efficiently transported. The Department of Interior has negotiated a package agreement with Truckee Carson Irrigation District whereby the District will decrease its ultimate water right acreage from 87,500 to 74,500 acres. The agreement also provides for a reduction in the Districts historical water use from an annual receipt of about 496,500 acre feet to a maximum annual use of 406,000 acre feet. The reduction in water supply necessitates rehabilitation of Project features and the Districts distribution system in order to serve the irrigated lands, the Carson Lake Pasture and Stillwater Wildlife Management Area with adequate water based upon the reduced annual supply.
Published By Federal Emergency Management Agency, Department of Homeland Security
Issued más de 9 años ago
Summary
Description
The Floodplain Mapping/Redelineation study deliverables depict and quantify the flood risks for the study area. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual- chance flood event, and areas of minimal flood risk. The Floodplain Mapping/Redelineation flood risk boundaries are derived from the engineering information Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA).
Published By Social Security Administration
Issued más de 9 años ago
Summary
Description
System used to announcement job vacancies and collect applicant data and job applications.
Self-Biased Radiation Hardened Ka-Band Circulators for Size, Weight and Power Restricted Long Range Space Applications Project
Published By National Aeronautics and Space Administration
Issued más de 9 años ago
Summary
Description
Ferrite control components including circulators and isolators are fundamental building blocks of Transmit/Receive modules (TRM) utilized in high data rate active space transceivers and transponders for both long-range (LR) and low earth orbit (LEO) systems. These components are utilized to protect high power amplifiers (HPA) during the transmit cycle from destabilizing, and potentially harmful, power reflections from the antenna element. During receive cycle these components are utilized to direct lower power received signals with minimal attenuation to the low noise amplifiers (LNA). As such, performance specifications of these ferrite control components, such as bandwidth, insertion loss, isolation, power handling, temperature stability, radiation hardness, and linearity impose strict limitations on the overall system performance. Over the course of the proposed Ph1 SBIR program self-biased ferrite control components based on highly textured hexagonal ferrite compacts which have the potential to eliminate biasing magnets and significantly reduce the size, cost, and weight of the TRM while concurrently increasing power handling capability, and improving temperature stability and radiation hardness will be investigated. Specifically, a research and development path to realizing high performance self-biased ferrite materials and device designs for operation in space based environments at Ka-band (>27 GHz, 31.5 - 34 GHz targeted) is outlined.
Published By National Aeronautics and Space Administration
Issued más de 9 años ago
Summary
Description
This data product contains TOMS/Nimbus-7 UV Aerosol Index Monthly L3 Global 1x1.25 deg Lat/Lon Grid Version 8 data in ASCII format. The Total Ozone Mapping Spectrometer (TOMS) Version 8 Monthly Gridded Data consist of monthly, global coverage of total column ozone, aerosol index, Lambertian effective reflectivity(Rayleigh corrected) and surface UV-B Erythemal irradiances. Four TOMS instruments have been successfully flown on the following satellites: Nimbus-7 (Nov. 1978 - May 1993), Meteor-3 (Aug. 1991 - Dec. 1994), Earth Probe (July 1996 - current), and ADEOS (Sep. 1996 - June 1997). Earth Probe, Meteor-3 and Nimbus-7 data are currently reprocessed using the Version-8 algorithm (http://toms.gsfc.nasa.gov/version8/v8toms_atbd.pdf) . These Version-8 data are archived at NASA Goddard Earth Sciences Data and Information Services Center (GES DISC). The total ozone, aerosol index, reflectivity data and UV-B Erythemal irradiances are mapped to a global grid of size 180 x 288 with a Lat/Lon resolution of 1.00 x 1.25 degrees. These data are also stored in the EOS Version of Hierarchical Data Format (HDF-EOS). HDF was developed by the National Center for Supercomputer Applications (NCSA) at the University of Illinois at Urbana-Champaign. The GES DISC maintains an online Web-based system (Giovanni) for previewing the data, subsetting in ASCII format, and downloading the data and images. The URL for Giovanni is http://giovanni.gsfc.nasa.gov/. The Level-2 data at instrument resolution(approx 50km x 50km pixel at nadir, in HDF5 EOS format) are also available from the GES DISC. For more information regarding TOMS or other DAAC data sets please visit the GES DISC Home Page at http://disc.sci.gsfc.nasa.gov/acdisc/ , or contact the DISC Help Desk at: GES DISC Help Desk NASA Goddard Space Flight Center Code 610.2 Greenbelt, MD 20771 gsfc-help-disc@lists.nasa.gov TOMS data are produced by the Laboratory for Atmospheres at NASA Goddard Space Flight Center (Code 613). The Version-8 Algorithm Theoretical Basis Document (ATBD) is available from the TOMS site http://toms.gsfc.nasa.gov/version8/v8toms_atbd.pdf For detailed information about the TOMS instrument, data, and ozone see the TOMS official Home Page at: http://toms.gsfc.nasa.gov/.
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued más de 9 años ago
Summary
Description
Bathymetry of Lake Ontario has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more accessible to the public. The project is a cooperative effort between investigators at the NOAA National Geophysical Data Center's Marine Geology & Geophysics Division (NGDC/MGG) and the NOAA Great Lakes Environmental Research Laboratory (GLERL). was compiled utilizing the entire historic sounding data base. The entire historic hydrographic sounding data base from the U.S. and Canada, originally collected for nautical charting purposes, was used to create a complete and accurate representation of Lake Ontario bathymetry. The U.S. data primarily came from the NOS Hydrographic Survey Data. This and other bathymetric sounding data collected by the U.S. National Ocean Service's (NOS) Coast Survey and the U. S. Army Corps of Engineers was employed to construct bathymetric contours at 1 meter intervals from 1-10 meters depth and 2 meter intervals at depths greater than 10 meters. Compilation scales ranged from 1:10,000 to 1:50,000. Bathymetric sounding data collected by the Canadian Hydrographic Service (CHS) were employed to construct bathymetric contours at 1 meter intervals and compilation scales ranging from 1:1,000 to 1:30,000. Digitization of the bathymetric contours, merging of the bathymetric contour data sets, poster construction, and preparation of a CD-ROM, were accomplished at the NGDC. Multibeam bathymetric data collected by the University of New Brunswick's Ocean Mapping Group (UNB-OMG), with support of the Geological Survey of Canada (GSC) and the CHS, were kindly made available in gridded form. In the two areas where multibeam bathymetric data were available, no other bathymetric data were used in the compilations. In some areas all available Canadian and U. S. bathymetric sounding data, collected at different times on different survey expeditions, were used to derive the contours. The U.S. coastline used was primarily the GLERL Medium Resolution Vector Shoreline dataset (Lee, 1998). Where needed for more coverage, the NOS Medium Resolution Vector Shoreline for the Conterminous U.S. (1994) dataset was used. Coastlines from the CHS bathymetric sounding data field sheets were used to complete the Canadian coastline. Images were constructed using the publicly-available software Generic Mapping Tools (GMT).
Published By Department of Energy
Issued más de 9 años ago
Summary
Description
Monthly 1996 data at the company level on imports of crude oil and/or petroleum products into the 50 States, the District of Columbia, Puerto Rico, the Virgin Islands other U.S. possessions, and Foreign Trade Zones located in the 50 States and DC by each importer of record. Based on Form EIA-814 data.
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued más de 9 años ago
Summary
Description
This data set contains sensitive biological resource data for submerged aquatic vegetation (SAV), rare plant species [Water howellia (Howelia aquatilis) and Columbia yellowcress (Rorippa columbiae)], and other plant species in Columbia River. Vector polygons in this data set represent locations of habitat and rare plant distribution. Species-specific abundance, seasonality, status, life history, and source information are stored in relational data tables (described below) designed to be used in conjunction with this spatial data layer.This data set comprises a portion of the Environmental Sensitivity Index (ESI) data for Columbia River. ESI data characterize the marine and coastal environments and wildlife by their sensitivity to spilled oil. The ESI data include information for three main components: shoreline habitats, sensitive biological resources, and human-use resources.
Postconstruction tin of land surface on the Missouri River downstream from Gavins Point Dam near River Mile 761.4
Published By U.S. Geological Survey, Department of the Interior
Issued más de 9 años ago
Summary
Description
This geospatial data set contains an interpolated 3-D surface or, triangulated-irregular network (TIN), of the substrate surface between cross-sections 23 and 39 following construction of Emergent Sandbar Habitat near River Mile 761.4. The surface was generated from points collected by the echosounder and real-time kinematic (RTK) GPS on cross-sections in the downstream project reach surrounding the construction area at River Mile 761.4 below Gavins Point Dam on the Missouri River in South Dakota.
TIGER/Line Shapefile, 2014, Series Information File for the Address Range-Feature County-based Shapefile
Published By US Census Bureau, Department of Commerce
Issued más de 9 años ago
Summary
Description
The Address Ranges Feature Shapefile (ADDRFEAT.dbf) contains the geospatial edge geometry and attributes of all unsuppressed address ranges for a county or county equivalent area. The term "address range" refers to the collection of all possible structure numbers from the first structure number to the last structure number and all numbers of a specified parity in between along an edge side relative to the direction in which the edge is coded. Single-address address ranges have been suppressed to maintain the confidentiality of the addresses they describe. Multiple coincident address range feature edge records are represented in the shapefile if more than one left or right address ranges are associated to the edge. The ADDRFEAT shapefile contains a record for each address range to street name combination. Address range associated to more than one street name are also represented by multiple coincident address range feature edge records. Note that the ADDRFEAT shapefile includes all unsuppressed address ranges compared to the All Lines Shapefile (EDGES.shp) which only includes the most inclusive address range associated with each side of a street edge. The TIGER/Line shapefile contain potential address ranges, not individual addresses. The address ranges in the TIGER/Line Files are potential ranges that include the full range of possible structure numbers even though the actual structures may not exist.
Published By Federal Laboratory Consortium
Issued más de 9 años ago
Summary
Published By US Fish and Wildlife Service, Department of the Interior
Issued más de 9 años ago
Summary
Description
To provide the user with a general idea of areas where the final critical habitat for Welsh's milkweed (Asclepias welshii) occur based on the description provided in the Federal Register. The geographic extent includes Kane County, Utah.
Published By National Aeronautics and Space Administration
Issued más de 9 años ago
Summary
Description
The Mars Program Planning Group (MPPG) Final Report reiterates the importance of planetary sample return stating that sample return architectures provide a promising intersection of objectives for long term collaborations. The proposed innovation is an enabling technology for robotic planetary sample return missions. The proposed concept is a passive mechanism that works within a larger sample drilling system. Bear developed a complete planetary sample acquisition system called the Universal Sampling System (USS) which includes the baseline drill with Non-Rotating Technology (NRT Coring Drill) which was funded under a SBIR Phase 2 contract. Bear has several concepts for creating additional capabilities among them is the proposed Surface Abrasion Tool (SAT). The proposed innovation is a critical system component for meeting the science objectives of planetary sample return. Bear proposes to research and advance a Rock Abrasion (MER Rovers) like tool that can attach to and is driven by an existing coring drill thus requiring no additional motors. The proposed innovation has broad significance for the exploration of planets and small bodies. The proposed project is directly relevant to the topic as it addresses the importance of technologies for robotic mobility, manipulation, and sampling for in-situ analysis or return to earth from planetary small bodies, including Mars, Venus, comets, asteroids, and planetary Moons. Two main goals of the research are to: 1. Develop a method for attaching the surface abrasion tool to the larger coring drill without additional motors or wires. 2. Research the possible benefits/tradeoffs of cutting rather than grinding to remove rock surface with power constraints. Regardless of which technique is used to prepare the surface (cutting or grinding), the passive tool will strive to reduce the time it takes to prepare rock surfaces versus state of the art.
Published By US Census Bureau, Department of Commerce
Issued más de 9 años ago
Summary
Description
The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The purpose of this file is to provide the geography for the 2010 Census Blocks along with their 2010 housing unit count and population. Census Blocks are statistical areas bounded on all sides by visible features, such as streets, roads, streams, and railroad tracks, and/or by nonvisible boundaries such as city, town, township, and county limits, and short line-of-sight extensions of streets and roads. Blocks are the smallest geographic areas for which the Census Bureau publishes data from the decennial census. A block may consist of one or more faces.
Published By Department of Energy
Issued más de 9 años ago
Summary
Description
Data on the proved reserves, production, and drilling of crude oil, lease condensates, natural gas, and natural gas wells. Monthly and annual data available. Users of the EIA API are required to obtain an API Key via this registration form: http://www.eia.gov/beta/api/register.cfm
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued más de 9 años ago
Summary
Description
These images are part of a project funded by NOAA Office for Coastal Management to develop a high quality, user-friendly, attributed, centralized, multi-territorial digital database of georeferenced historic aerial imagery in the Pacific Islands region, including Hawaii, American Samoa, Guam, and the Commonwealth of the Northern Mariana Islands. The objective of this project is to make previously unavailable historic aerial imagery of the Pacific Islands available for public consumption through NOAA's Digital Coast website. These images were scanned on a flatbed scanner and georeferenced to existing basemap data.
Published By U.S. Environmental Protection Agency
Issued más de 9 años ago
Summary
Description
This asset includes a collection of information resources, training, and other media related to hazardous waste site cleanup and characterization. A major part of this asset is the CLU-IN System, which is a collection of websites designed to be the central reference library for ""the development, collection, evaluation, coordination, and dissemination of information relating to the utilization of alternative or innovative treatment technologies..."" for cleaning up hazardous waste sites (Title 42 Section 9660 (b)(8)). Information includes Best Practices for using innovative technologies, case studies and focus areas about characterization and remediation technologies, emerging issues, optimization, and green(ing) remediation. CLU-IN is available via web-based documentation, live events, podcasts, and videos. Additionally, the Technology Innovation and Field Services Division (TIFSD) supports both classroom and online training registration through Trainex.org. All EPA content is also posted on EPA's website.
Published By Federal Emergency Management Agency, Department of Homeland Security
Issued más de 9 años ago
Summary
Description
The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12000.
Soil analysis and native plant propagation: a case study on Laysan Island, Papahanaumokuakea Marine National Monument
Published By US Fish and Wildlife Service, Department of the Interior
Issued más de 9 años ago
Summary
Description
This final report documents methods and results for 3 objectives of a project funded by the Region 1 Inventory and Monitoring Initiative in FY 2012. Objectives were: Collect soil samples via stratified random sampling for composition analysis; consult horticultural specialists to determine the best locations to outplant specific native plant species; propagate 3 native Hawaiian plant species Cyperus pennatiformes, Chenopodium oahuense, Santalum ellipticum on Laysan Island in abundance and outplant in the recommended areas during the summer of 2012 to test horticulturist recommendations.
Published By National Aeronautics and Space Administration
Issued más de 9 años ago
Summary
Description
<p align="LEFT"> <font face="TimesNewRomanPSMT">One of the major goals of high-energy solar physics, and therefore of the Solar and </font><font face="TimesNewRomanPSMT">Heliospheric Physics (SHP) Program, is a detailed understanding of the particle acceleration </font><font face="TimesNewRomanPSMT">processes taking place on the Sun during solar flares. Flares can accelerate electrons to tens of </font><font face="TimesNewRomanPSMT">MeV and ions to energies exceeding 1 GeV, as evidenced by the neutral radiation that can be </font><font face="TimesNewRomanPSMT">studied remotely. The intense scientific interest in understanding this process is evidenced by </font><font face="TimesNewRomanPSMT">the large number of wh ite papers dedicated to the topic that were submitted in response to the </font><font face="TimesNewRomanPSMT">current Heliophysics Decadal Survey. A recurring theme in many white papers is the central role </font><font face="TimesNewRomanPSMT">that new, sensitive observations of the </font><b><font face="TimesNewRomanPS-BoldMT">gamma-ray line emissions </font></b><font face="TimesNewRomanPSMT">from flares must play in </font><font face="TimesNewRomanPSMT">disentangling the problem of acceleration and transport of energetic particles (Lin et al. 2010; </font><font face="TimesNewRomanPSMT">Shih et al. 2010; Desai et al. 2010). More specifically, to significantly advance the study of solar </font><font face="TimesNewRomanPSMT">flare particle acceleration, it will be necessary to&nbsp; </font><b><font face="TimesNewRomanPS-BoldMT">compare in detail the spatial, spectral, and </font></b><b><font face="TimesNewRomanPS-BoldMT">temporal evolution of electron signatures&nbsp; </font></b><font face="TimesNewRomanPSMT">(hard X-ray and gamma-ray continuum emission </font><font face="TimesNewRomanPSMT">from bremsstrahlung) </font><b><font face="TimesNewRomanPS-BoldMT">and ion signatures </font></b><font face="TimesNewRomanPSMT">(gamma-ray lines and pion-decay continuum from </font><font face="TimesNewRomanPSMT">accelerated ions colliding with the solar atmosphere) </font><b><font face="TimesNewRomanPS-BoldMT">over a wide dynamic range </font></b><font face="TimesNewRomanPSMT">of flare sizes </font><font face="TimesNewRomanPSMT">and intensities.</font></p> <p align="LEFT"> <font face="TimesNewRomanPSMT"><font face="TimesNewRomanPSMT">For the gamma-ray lines, comprehensive measurements require angular resolution of ~10 </font><font face="TimesNewRomanPSMT">arcsec or better at energies up to ~10 MeV, energy resolution of a few percent or better, and </font><font face="TimesNewRomanPSMT">sensitivity at least 10 times better than that of previous instruments. Making such complex </font><font face="TimesNewRomanPSMT">measurements over a large dynamic range presents a serious challenge to gamma-ray </font><font face="TimesNewRomanPSMT">instrumentation, which must deal with large backgrounds for faint flares and high count rates for </font><font face="TimesNewRomanPSMT">bright flares. In addition, future missions to study flare particle acceleration, such as the Solar </font><font face="TimesNewRomanPSMT">Eruptive Events (SEE) 2020 concept presented by Lin et al. (2010), will contain entire suites of </font><font face="TimesNewRomanPSMT">instruments to ensure that complementary measurements are made in a coordinated manner. </font><font face="TimesNewRomanPSMT">Unprecedented gamma-ray measurements must therefore be made without consuming the </font><font face="TimesNewRomanPSMT">spacecraft&rsquo;s mass, power, and telemetry budgets.</font></font></p> <p align="LEFT"> <font face="TimesNewRomanPSMT"><font face="TimesNewRomanPSMT"><font face="TimesNewRomanPSMT">Three recent technological developments potentially allow us to combine the abilities of </font><font face="TimesNewRomanPSMT">these pioneering instruments: 1) Recently developed scintillator materials, in particular LaCl </font><font face="TimesNewRomanPSMT" size="1"><font face="TimesNewRomanPSMT" size="1">3</font></font><font face="TimesNewRomanPSMT">:Ce </font><font face="TimesNewRomanPSMT">and LaBr </font><font face="TimesNewRomanPSMT" size="1"><font face="TimesNewRomanPSMT" size="1">3</font></font><font face="TimesNewRomanPSMT">:Ce, offer a far more attractive mix of stopping power, energy resolution, and fast time </font><font face="TimesNewRomanPSMT">response than NaI and BGO scintillators. Energy resolution better than 3% above 0.6 MeV and </font><font face="TimesNewRomanPSMT">timing resolution well below 500 ps are now well established. 2) Recently developed Silicon <font face="TimesNewRomanPSMT">Photo-Multipliers (SiPMs) offer a compact, low-mass, and low-power alternative to PMTs. We </font><font face="TimesNewRomanPSMT">have already shown that detectors composed of LaBr </font><font face="TimesNewRomanPSMT" size="1"><font face="TimesNewRomanPSMT" size="1">3 </font></font><font face="TimesNewRomanPSMT">scintillator coupled to SiPM readouts </font><font face="TimesNewRomanPSMT">perform well as gamma-ray spectrometers (Bloser et al. 2008, 2010a). 3) Newly available </font><font face="TimesNewRomanPSMT">compact arrays of SiPMs, with sensing elements typically 3 &ndash; 4 mm in size, promise the </font><font face="TimesNewRomanPSMT">additional ability to achieve fine spatial resolution within scintillators in a compact Anger </font><font face="TimesNewRomanPSMT">camera configuration. Gamma-ray detectors of this nature are currently being developed by the </font><font face="TimesNewRomanPSMT">medical imaging community (e.g., Schaart et al. 2009), and position resolution of 1 mm or better </font><font face="TimesNewRomanPSMT">has been demonstrated</font></font></font></font></p> <p align="LEFT"> &nbsp;</p> <p align="LEFT"> <font face="TimesNewRomanPSMT"><font face="TimesNewRomanPSMT"><b><font face="TimesNewRomanPS-BoldMT">We propose a program of instrument development and modeling to show that a fast </font></b><b><font face="TimesNewRomanPS-BoldMT">Compton telescope based on an innovative combination of new scintillator detectors and </font></b><b><font face="TimesNewRomanPS-BoldMT">light readout devices, combined with an imaging grid or mask, is a scientifically </font></b><b><font face="TimesNewRomanPS-BoldMT">competitive solution to this instrumentation challenge&nbsp;&nbsp;</font></b><font face="TimesNewRomanPSMT">In effect, we will attempt to combine </font><font face="TimesNewRomanPSMT">the best features of past solar gamma-ray instruments into an efficient, low-background, imaging </font><font face="TimesNewRomanPSMT">gamma-ray spectrometer. The RHESSI mission (Lin et al. 2002) made the first high-angularresolution </font><font face="TimesNewRomanPSMT">images at gamma-ray energies, adapting Fourier-synthesis methods previously used at </font><font face="TimesNewRomanPSMT">hard X-ray energies (e.g., the Yohkoh Hard X-ray Telescope; Kosugi et al. 1991) to image the </font><font face="TimesNewRomanPSMT">2.2 MeV neutron-capture line with a resolution of about 35 arcsec (Hurford et al. 2006). Earlier </font><font face="TimesNewRomanPSMT">gamma-ray spectrometers based on efficient inorganic scintillators, including those on the Solar </font><font face="TimesNewRomanPSMT">Maximum Mission (SMM; Forrest et al. 1980), Yohkoh (Yoshimori et al. 1992), and the </font><font face="TimesNewRomanPSMT">Compton Gamma Ray Observatory (e.g., Murphy et al. 1993), made sensitive spectral </font><font face="TimesNewRomanPSMT">observations up to &gt;10 MeV over a large range of flare intensities. The most sensitive gammaray </font><font face="TimesNewRomanPSMT">flare spectrometer of all was the COMPton TELescope (COMPTEL) on CGRO (Sch&ouml;nfelder </font><font face="TimesNewRomanPSMT">et al. 1993; Ryan &amp; McConnell 1996). As a scintillator-based Compton telescope, COMPTEL </font><font face="TimesNewRomanPSMT">was able to dramatically suppress background using a fast coincidence, time-of-flight (ToF) </font><font face="TimesNewRomanPSMT">measurements, and coarse imaging ability. COMPTEL was able to detect nuclear emission from </font><font face="TimesNewRomanPSMT">a C4 flare, the faintest such detection to date (Young et al. 2001).</font></font></font></p> <p> &nbsp;</p> <p> &nbsp;</p>
Published By Federal Emergency Management Agency, Department of Homeland Security
Issued más de 9 años ago
Summary
Description
The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the State Plane projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12000.
Published By Department of Transportation
Issued más de 9 años ago
Summary
Description
Contains data on roadside inspections of large trucks and buses, including violations discovered. The majority of this information comes from state police jurisdictions to FMCSA, although some Federally-conducted inspections are also included.
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued más de 9 años ago
Summary
Description
The Central Andes gravity data (6,151 records) were compiled by Professor Gotze and the MIGRA Group. This data base was received in April, 1997. Principal gravity parameters include Free-air Anomalies and Bouguer Anomalies (terrain and mass corrected). The gravity station data have been adjusted to the International Gravity Standardization Net 1971 (IGSN 71). The gravity anomaly computation uses the Geodetic Reference System 1967 (GRS 67) theoretical gravity formula. The data are randomly distributed within the area bounded by 64 - 71 degrees West and 20 - 29 degrees South in the Central Andes of South America.
Published By US Fish and Wildlife Service, Department of the Interior
Issued más de 9 años ago
Summary
Description
This report outlines an intensive effort to survey the vegetation in the Cranberry Pool impoundment at Missisquoi National Wildlife Refuge in 2000. The percentages of cover for the various species are charted in the study.