Dataset Identification:
Resource Abstract:
- description: This is a tiled collection of the 3D Elevation Program (3DEP) and is 1/3 arc-second (approximately 10 m) resolution.The
3DEP data holdings serve as the elevation layer of The National Map, and provide foundational elevation information for earth
science studies and mapping applications in the United States. Scientists and resource managers use 3DEP data for hydrologic
modeling, resource monitoring, mapping and visualization, and many other applications. The elevations in this DEM represent
the topographic bare-earth surface. The seamless 1/3 arc-second DEM layers are derived from diverse source data that are processed
to a common coordinate system and unit of vertical measure. These data are distributed in geographic coordinates in units
of decimal degrees, and in conformance with the North American Datum of 1983 (NAD 83). All elevation values are in meters
and, over the continental United States, are referenced to the North American Vertical Datum of 1988 (NAVD88). The seamless
1/3 arc-second DEM layer provides coverage of the conterminous United States, Hawaii, Puerto Rico, other territorial islands,
and in limited areas of Alaska. The seamless 1/3 arc-second DEM is available as pre-staged products tiled in 1 degree blocks
in Erdas .img, ESRI arc-grid, and grid float formats. The seamless 1/3 arc-second DEM layer is updated continually as new
data become available. Other 3DEP products are nationally seamless DEMs in resolutions of 1, and 2 arc seconds. These seamless
DEMs were referred to as the National Elevation Dataset (NED) from about 2000 through 2015 at which time they became the seamless
DEM layers under the 3DEP program and the NED name and system were retired. Other 3DEP products include one-meter DEMs produced
exclusively from high resolution light detection and ranging (lidar) source data and five-meter DEMs in Alaska as well as
various source datasets including the lidar point cloud and interferometric synthetic aperture radar (Ifsar) digital surface
models and intensity images. All 3DEP products are public domain.; abstract: This is a tiled collection of the 3D Elevation
Program (3DEP) and is 1/3 arc-second (approximately 10 m) resolution.The 3DEP data holdings serve as the elevation layer of
The National Map, and provide foundational elevation information for earth science studies and mapping applications in the
United States. Scientists and resource managers use 3DEP data for hydrologic modeling, resource monitoring, mapping and visualization,
and many other applications. The elevations in this DEM represent the topographic bare-earth surface. The seamless 1/3 arc-second
DEM layers are derived from diverse source data that are processed to a common coordinate system and unit of vertical measure.
These data are distributed in geographic coordinates in units of decimal degrees, and in conformance with the North American
Datum of 1983 (NAD 83). All elevation values are in meters and, over the continental United States, are referenced to the
North American Vertical Datum of 1988 (NAVD88). The seamless 1/3 arc-second DEM layer provides coverage of the conterminous
United States, Hawaii, Puerto Rico, other territorial islands, and in limited areas of Alaska. The seamless 1/3 arc-second
DEM is available as pre-staged products tiled in 1 degree blocks in Erdas .img, ESRI arc-grid, and grid float formats. The
seamless 1/3 arc-second DEM layer is updated continually as new data become available. Other 3DEP products are nationally
seamless DEMs in resolutions of 1, and 2 arc seconds. These seamless DEMs were referred to as the National Elevation Dataset
(NED) from about 2000 through 2015 at which time they became the seamless DEM layers under the 3DEP program and the NED name
and system were retired. Other 3DEP products include one-meter DEMs produced exclusively from high resolution light detection
and ranging (lidar) source data and five-meter DEMs in Alaska as well as various source datasets including the lidar point
cloud and interferometric synthetic aperture radar (Ifsar) digital surface models and intensity images. All 3DEP products
are public domain.
Citation
- Title 1/3rd arc-second Digital Elevation Models (DEMs) - USGS National Map 3DEP Downloadable Data Collection.
-
- creation Date
2018-07-26T19:03:59.967901
Resource language:
Processing environment:
Back to top:
Metadata data stamp:
2018-08-06T19:35:04Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T19:35:04Z
Metadata contact
-
pointOfContact
- organisation Name
CINERGI Metadata catalog
-
- Contact information
-
-
- Address
-
- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:3ad2089f-be76-4937-8f1b-32b81f2a4024
Metadata record format is ISO19139 XML (MD_Metadata)