100-Meter Resolution Satellite View with Shaded Relief of the Conterminous United States - Direct Download
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
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Description
The Satellite View with Shaded Relief of the Conterminous United States map layer is a 100-meter resolution simulated natural-color image of the United States, with relief shading added to accentuate terrain features. Vegetation is generally green, with forests in darker green and grasslands or shrublands in lighter green. Areas of high reflectance, including urban areas, rock, and dry bare soil, are shown in shades of tan and pink. Very bright areas, such as snow and ice, are light blue. The image was produced by combining a mosaic of Landsat Thematic Mapper (TM) imagery from the Landsat 4 and Landsat 5 satellites with shaded relief generated from 100-meter elevation data extracted from the National Elevation Dataset (NED).
Published By National Aeronautics and Space Administration
Issued over 9 years ago
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Description
1024 x 1024 Liquid Crystal Multi-Level Spatial Light Modulator Project
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
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This data set consists of digital county boundaries for Oklahoma. The boundaries were derived from U.S. Geological Survey 1:100,000-scale Digital Line Graph data sets. Two attributes are associated with each county polygon. The first is the FIPS code and the second is the county name.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
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Description
This narrative report from the Civilian Conservation Corps summarizes activities done on Camp Buena Vista. Topics include land development and maintenance, wildlife activities, law enforcement, safety and recreation. Photographs are attached.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
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Description
This annual narrative report for Shell Lake NWR outlines Refuge accomplishments during the 1976 calendar year. The report begins with an introduction to the Refuge and information about general climate and habitat conditions. Construction and maintenance follows. Habitat management and wildlife is included. Next, interpretation and recreation are discussed.
Domestic Airline Consumer Airfare Report: Detailed Fare Information for Selected City-Pair Markets With Highest and Lowest Average Fares-2013 Q1
Published By Department of Transportation
Issued over 9 years ago
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Description
The US DOT through the Office of Aviation Analysis issues the Consumer Air Fare Report on a quarterly basis, which provides information about average prices being paid by consumers in the top 1,000 domestic city-pair markets in the continental United States. The source data is the US DOT Origin and Destination Survey.
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
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Description
This map layer shows elevation contour lines for Puerto Rico and the U.S. Virgin Islands. The map layer was derived from the 100-meter resolution elevation data set which is published by the National Atlas of the United States, and is in the same Albers Equal-area Conic projection as that source data set. Contour intervals match the steps used in the National Atlas Color-Sliced Elevation data sets. Contours were adjusted so that they are in the proper relationship to National Atlas 1:1,000,000-scale lakes, reservoirs, and wide (double-line) streams.
H12007_GEO: 1-m Bathymetric Grid Generated from National Oceanic and Atmospheric Administration (NOAA) Survey H12007 in the Vicinity of Cross Rip Channel, Nantucket Sound (Geographic, WGS84)
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
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Description
The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA), is producing detailed geologic maps of the coastal sea floor. Bathymetry, originally collected by NOAA for charting purposes, provides a fundamental framework for research and management activities off southern New England, shows the character and terrain of the seabed, and provides information on sediment transport and benthic habitat. During April-May 2009 NOAA completed hydrographic survey H12007 in the vicinity of Cross Rip Channel in Nantucket Sound off southern Cape Cod, Massachusetts and during June 2011 bottom photographs and surficial sediment data were acquired as part of ground-truth reconnaissance surveys of this area. Interpretations were derived from the multibeam echo-sounder data and the ground-truth data used to verify them.
Estimates of land in agricultural production in counties in the conterminous United States as reported in the 1987 Census of Agriculture
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
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Description
This coverage contains estimates of land in agricultural production in counties in the conterminous United States as reported in the 1987 Census of Agriculture (U.S. Department of Commerce, 1989a). Land in agriculture data are reported as either a number (for example, number of Farms), acres, or as a percentage of county area. Land in agriculture estimates were generated from surveys of all farms where $1,000 or more of agricultural products were sold, or normally would have been sold, during the census year. Most of the attributes summarized represent 1987 data, but some information for the 1982 Census of Agriculture also was included. The polygons representing county boundaries in the conterminous United States, as well as lakes, estuaries, and other nonland-area features were derived from the Digital Line Graph (DLG) files representing the 1:2,000,000-scale map in the National Atlas of the United States (1970). Agricultural land Census of Agriculture Counties United States
Published By National Aeronautics and Space Administration
Issued over 9 years ago
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Description
This product contains near-surface current estimates, derived using quasi-linear and steady flow momentum equations. The horizontal velocity is directly estimated from sea surface height, surface vector wind and sea surface temperature, these data were collected from the various satellites and in site instruments (see processing methods). The model formulation combines geostrophic, Ekman and Stommel shear dynamics, and a complementary term from the surface buoyancy gradient
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
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Description
Several trends have been observed over time in Back Bay. The salinity of Back Bay has fluctuated up and down between saline, slightly brackish, and a nearly freshwater environment. Anecdotally, Weiland 1897 noted productive oyster beds being replaced by submerged aquatic vegetation SAV, freshwater fisheries and waterfowl use with the closing of Currituck inlet. There has been a general decline in SAV populations, although Back Bay National Wildlife Refuge Refuge notes that in 1993 SAV appears to be making a slow come back in some areas. The Refuge also notes that winter waterfowl counts are currently a mere fraction of the observed numbers reported for the early part of this century. Historic waterfowl use observations correspond with a general decline in SAV populations since the early part of this century. Anecdotal observations indicate that the fish population may have been more marine in the early part of the century. Over the last four decades, which have been well documented, the fish species diversity, though nearly 50 freshwater, shows brackish water species accounting for 60 of the standing crop. The formerly renowned citation size largemouth bass fishery has been reduced from 17 of the biomass in 1980 to 2 of the biomass in 1986. Change in salinity increased salinity proving toxic to young bass and a lack of submerged aquatic vegetation food source have been suggested as possible causes of the declining fishery. In the less saline environment, recruitment of young bass may be more successful than in the past.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
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Mobitrum has started the development of virtual sensor test instrumentation in Phase I for characterization and measurement of ground testing of propulsion systems. It is clear that future wide availability of smart sensors will significantly reduce the cost and time required to design, repair, or modify sensor systems through modular and re-configurable capability. The Phase II effort will complete the development of: 1) common sensor interface, (2) microprocessor, (3) wireless interface, (4) signal conditioning and ADC/DAC, and (5) on-board EEPROM for metadata storage and executable software to create powerful, scalable, re-configurable, and reliable distributed test instrument. The transducer senses the physical quantity being measured and converts it into an electrical signal. Then the signal is fed to an A/D converter, and is ready for use by the processor to execute functional transformation based on the sensor characteristics stored in TEDS. In order to maximize the data efficiency, a plug-and-play is required to interface with traditional sensors to enhance their identity and capabilities for data processing and communications. Virtual sensor test instrumentation is built upon open-system architecture with standardized protocol modules/stacks easily to interface with industry standards and commonly used software such as IEEE 1451, MATLAB, and LabVIEW.
Published By U.S. Department of Health & Human Services
Issued over 9 years ago
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Description
These estimates are provided from 2010 data. Final amount of rebates will vary with market conditions and may be lower as insurance companies lower premiums for consumers to meet the MLR standard.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
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CERES Single Scanner Satellite Footprint, TOA, Surface Fluxes and Clouds (SSF) data in HDF.
Published By US Census Bureau, Department of Commerce
Issued over 9 years ago
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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.
This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural conservation practice (CPIT01), Gravity Irrigation Source (GI) on agricultural land by county (nri_it01)
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural conservation practice (CPIT01), Gravity Irrigation Source (GI) on agricultural land by county. Gravity Irrigation Source is described as irrigation "delivered to the farm and/or field by canals or pipelines open to the atmosphere; and, water is distributed by the force of gravity down the field by: 1) A surface irrigation system (border, basin, furrow, corrugation, wild flooding, etc.) or, 2) Sub- surface irrigation pipelines or ditches." (U.S. Department of Agriculture, 1995) This data set was created with geographic information systems (GIS) and database management tools. The acres on which GI's are applied were totaled at the county level in the tabular NRI database and then apportioned to a raster coverage of agricultural land within the county based on the Enhanced National Land Cover Dataset (NLCDe) 1-kilometer resolution land cover grids (Nakagaki, 2003). Federal land is not considered in this analysis because NRI does not record information on those lands.
Organochlorine pesticides contamination in fish and raccoons of Hillside National Wildlife Refuge, Holmes and Yazoo Counties, Mississippi
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
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Description
The U.S. Fish and Wildlife Service conducted this study because of the distinct possibility that DDTR DDT and its metabolites and other organochlorine pesticides were above concern levels in fish and aquatic oriented wildlife on the Hillside National Wildlife Refuge. There was also a belief that organochlorine pesticides were disrupting the endocrine systems of fish and wildlife, and that they may be resulting in toxic effects to the benthic macroinvertebrate community. DDTR concentrations were above concern levels in only two of the twenty one fish samples, which do not indicate a problem. Toxaphene concentrations in nine of the twenty one fish samples were above the predator protection level. This finding indicates that a toxaphene contamination problem occurs on the refuge. We cannot conclude at this time whether the polychlorinated biphenyls PCBs concentrations detected in the fish samples are adversely affecting mink on the refuge. Additional fish samples should be collected and analyzed for the more toxic PCB congeners to answer this question. Three of the raccoon tissue samples contained elevated concentrations of DDTR; however, these levels were well below concern levels mentioned in the literature. Analyses of the fish blood plasma indicated that endocrine disruption was not occurring in fish collected from the refuge. The raccoon blood plasma samples thawed in route to the laboratory, therefore, additional raccoon blood plasma samples should be collected in the future and analyzed. The bioassessment on Black Creek did not indicate that contaminants were adversely affecting the benthic macroinvertebrate community. Recommendations are provided in the report to address problems and concerns identified by this investigation.
Published By Department of Homeland Security
Issued over 9 years ago
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Description
Encase enterprise is currently the primary tool used to perform forensic analysis of TSA IT assets and equipment.
H11321_1M_SSS_UTM_STR.TIF: 1-m Stretched Sidescan Sonar Image of National Oceanic and Atmospheric Administration (NOAA) Survey H11321 in Central Rhode Island Sound (UTM)
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
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Description
The United States Geological Survey (USGS) is working cooperatively with the National Oceanic and Atmospheric Administration (NOAA) to interpret the surficial geology in estuaries along the coast of the northeastern United States. The purpose of our present study is to define the sea floor morphology and sedimentary environments in an area of Rhode Island Sound using sidescan-sonar imagery, multibeam bathymetry, and seismic records. The mosaic, bathymetry, and their interpretations serve many purposes, including: (1) defining the geological variability of the sea floor, which is one of the primary controls of benthic habitat diversity; (2) improving our understanding of the processes that control the distribution and transport of bottom sediments and their distribution of benthic habitats and associated infaunal community structures; and (3) providing a detailed framework for future research, monitoring, and management activities. The sidescan-sonar mosaics and bathymetry images also serve as base maps for subsequent sedimentological, geochemical, and biological observations, because precise information on environmental setting is important for selection of sampling sites and for accurate interpretations of point measurements.
Security and Hyper-accurate Positioning Monitoring with Automatic Dependent Surveillance-Broadcast (ADS-B) Project
Published By National Aeronautics and Space Administration
Issued over 9 years ago
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Description
Lightning Ridge Technologies, LLC, working in collaboration with The Innovation Laboratory, Inc., extend Automatic Dependent Surveillance ? Broadcast (ADS-B) into a safe, secure, authenticated system. Historically, ADS-B has been criticized for its inability to guarantee safe and secure surveillance in all operational conditions. The technology presented provides an integrity check on all ADS-B data that is independent of all primary surveillance modes and is 100% robust to all Global Positioning System (GPS) spoofing attacks. An important by-product of that integrity check provides us with the further ability to do aircraft-to-aircraft relative positioning that is more accurate and more reliable than any civilian system in existence today. The ADS-B integrity check and the aircraft-to-aircraft positioning can provide a further basis on which to enhance the safety of the National Airspace System (NAS). Our innovation extends ADS-B into a new standard for providing safe, secure, and authentic surveillance, which is required for Separation Assurance (SA) and Traffic Flow Management (TFM) in the Next Generation Air Transportation System (NextGen).
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
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Description
This Comprehensive Conservation Plan CCP executive summary was written to guide management on Stone Lakes National Wildlife Refuge for the next 15 years. This plan outlines the Refuge vision and purpose and describes how the Refuge will contribute to the overall mission of the Refuge System. The plan provides an introduction to the Refuge, an overview of the CCP planning process, a summary of Refuge resources, goals and objectives, and current management programs.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
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Description
In October of 1981, the U.S. Fish and Wildlife Service Service sent out a questionnaire to all field stations. The stations were requested to identify all fieldstation threats and conflicts. All Service field stations reported threats and conflicts of various levels of occurrence and magnitude. These reports were summarized in a July 1983 Report of Resource Problems on the national wildlife refuges, national fish hatcheries and research centers. Fourteen resource problems were identified at Big Stone National Wildlife Refuge. This comprehensive plan addresses current and planned actions to correct these problems by the staff of the Big Stone Refuge. The 1983 Jobs Bill, Service Construction Funds, and the Accelerated Refuge Maintenance Management ARMM Program have made some progress possible in addressing these identified problems. This plan was assembled in response to a request by the Washington Office in June of 1984. The corrective actions identified by Service managers reflect our best estimate of solutions at known levels of funding and manpower. The management summary which follows the section on resource problems is intended to summarize current and planned actions utilizing discretionary funds to address these problems.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
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A switchable holographic circle to point converter for use in LIDAR receivers Project
Published By National Aeronautics and Space Administration
Issued over 9 years ago
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The documents contained in this dataset reflect NASA's comprehensive IT policy in compliance with Federal Government laws and regulations.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
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The Phragmites control effort of 1993 was initiated as part of a cooperative program with the state of Virginias Division of Natural Heritage, called the Southern Watershed Common Reedgrass Control Project. They agreed to treat approximately 100 acres of Refuge property with dense Phragmites concentrations. These treatment areas consist of sites in Tracts 126 829 Sandbridge Road, 104 Riggs Tract, and in A and B pools on the Refuge. In late August, Ken Clark of the Division of Natural Heritage and the Refuge finalized the sites to be treated. On September 7, two line transects were established; one through a treatment site and the other through an untreated control site.