National Elevation Database, N39 W115 (NEVADA)

Metadata:

• Identification_Information
• Spatial_Data_Organization_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey (USGS), EROS Data Center

Publication_Date: 1999

Title: National Elevation Database, N39 W115 (NEVADA)

Edition: 1

Geospatial_Data_Presentation_Form: raster digital data

Publication_Information:

Publication_Place: Sioux Falls, SD

Publisher: U.S. Geological Survey

Online_Linkage: <http://keck.library.unr.edu/data/neds/39115.htm>

Description:

Abstract:

The U.S. Geological Survey has developed a National Elevation Database (NED). The NED is a seamless mosaic of best-available elevation data. The 7.5-minute elevation data for the conterminous United States are the primary initial source data. In addition to the availability of complete 7.5-minute data, efficient processing methods were developed to filter production artifacts in the existing data, convert to the NAD83 datum, edge-match, and fill slivers of missing data at quadrangle seams. One of the effects of the NED processing steps is a much-improved base of elevation data for calculating slope and hydrologic derivatives.

If you'd like to download the NED data for this area (SE corner: N39 W115) from the Keck Earth Science and Mining Research Center (served by the University of Nevada, Reno library system), follow this link: <http://keck.library.unr.edu/data/neds/39115.htm>

Purpose:

Geospatial elevation data are utilized by the scientific and resource management communities for global change research, hydrologic modeling, resource monitoring, mapping, and visualization applications.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19990201

Ending_Date: Unknown

Currentness_Reference: publication date

Status:

Progress: In work

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: 116.000

East_Bounding_Coordinate: 115.000

North_Bounding_Coordinate: 40.000

South_Bounding_Coordinate: 39.000

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD Parameter Keywords

Theme_Keyword: EARTH SCIENCE

Theme_Keyword: LAND SURFACE

Theme_Keyword: TOPOGRAPHY

Theme_Keyword: LANDFORMS

Theme_Keyword: TERRAIN ELEVATION

Theme_Keyword: 1-DEGREE DEM

Theme_Keyword: 2-ARC-SECOND DEM

Theme_Keyword: 7.5-MINUTE DEM

Theme_Keyword: CARTOGRAPHY

Theme_Keyword: DEM

Theme_Keyword: DIGITAL ELEVATION MODEL

Theme_Keyword: DIGITAL MAPPING

Theme_Keyword: EDC

Theme_Keyword: EROS

Theme_Keyword: GEODATA

Theme_Keyword: GIS

Theme_Keyword: MAPPING

Theme_Keyword: RASTER

Theme_Keyword: USGS

Place:

Place_Keyword_Thesaurus: GCMD Location Keywords

Place_Keyword: NORTH AMERICA

Place_Keyword: UNITED STATES

Place_Keyword: UNITED STATES OF AMERICA

Place_Keyword: NEVADA

Access_Constraints: None

Use_Constraints:

None. Acknowledgement of the originating agencies would be appreciated in products derived from these data.

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Customer Services Representative

Contact_Organization: EROS Data Center

Contact_Address:

Address_Type: mailing and physical address

Address:

U.S. Geological Survey EROS Data Center

City: Sioux Falls

State_or_Province: SD

Postal_Code: 57198

Country: USA

Contact_Voice_Telephone: 605-594-6151

Contact_Facsimile_Telephone: 605-594-6589

Contact_Electronic_Mail_Address: custserv@edcmail.cr.usgs.gov

Resource_Description: National Elevation Database (NED)

Distribution_Liability:

Although these data have been processed successfully on a computer system at the U.S. Geological Survey, EROS Data Center, no warranty expressed or implied is made by either regarding the utility of the data on any system, nor shall the act of distribution constitute any such warranty. The USGS will warrant the delivery of this product in computer-readable format and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer peripherals, or when the physical medium is delivered in damaged condition. Requests for adjustments of credit must be made within 90 days from the date of this shipment from the ordering site.

Metadata_Reference_Information:

Metadata_Date: 19990211

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Customer Services Representative

Contact_Organization: EROS Data Center

Contact_Address:

Address_Type: mailing and physical address

Address:

U.S. Geological Survey EROS Data Center

City: Sioux Falls

State_or_Province: SD

Postal_Code: 57198

Country: USA

Contact_Voice_Telephone: 605-594-6151

Contact_Facsimile_Telephone: 605-594-6589

Contact_Electronic_Mail_Address: custserv@edcmail.cr.usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version:

FGDC-STD-001-1998

Description of source data:

NED tiles are stored as arc/info grids. Each tile covers a 1x1 degree area of the earth's surface.

Example Grid information: dem10148

Cell size: one arc-second Data type: Floating Point Number of rows: 3600 Number of columns: 3600 Projection: Geographic Datum: NAD83 Units: Decimal Degrees Zunits: Meters Spheroid: GRS1980

VIEWING Tiles:

No software for viewing NED tiles are included on this disc. Free software for viewing other USGS digital cartographic data are available at the following internet sites:

dlgv32 is Windows95/NT software for viewing a variety of USGS geospatial data including GeoTIFF Tiles. <http://mcmcweb.er.usgs.gov/viewers/dlg_view.html>

Arc Explorer is a free lightweight GIS data explorer developed by ESRI. <http://www.esri.com/software/arcexplorer/index.html>

PCI Freeware Handler is an application for viewing, enhancing and examining remotely sensed imagery such as LANDSAT, SPOT, RADARSAT, ERS-1, NOAA AVHRR, aerial photography. The Freeware Handler is freeware, and is offered by PCI to the remote sensing community as a public service. <http://www.pcigeomatics.com/downl.html#FREEWARE>