Dataset Identification:
Resource Abstract:
- description: This is a tiled collection of the 3D Elevation Program (3DEP) and is one meter 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. USGS standard one-meter DEMs are produced exclusively from high resolution light detection and ranging (lidar) source
data of one-meter or higher resolution. One-meter DEM surfaces are seamless within collection projects, but, not necessarily
seamless across projects. The spatial reference used for tiles of the one-meter DEM within the conterminous United States
(CONUS) is Universal Transverse Mercator (UTM) in units of meters, and in conformance with the North American Datum of 1983
(NAD83). All bare earth elevation values are in meters and are referenced to the North American Vertical Datum of 1988 (NAVD88).
Each tile is distributed in the UTM Zone in which it lies. If a tile crosses two UTM zones, it is delivered in both zones.
The one-meter DEM is the highest resolution standard DEM offered in the 3DEP product suite. Other 3DEP products are nationally
seamless DEMs in resolutions of 1/3, 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 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 one meter 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. USGS standard one-meter DEMs are produced exclusively from high
resolution light detection and ranging (lidar) source data of one-meter or higher resolution. One-meter DEM surfaces are seamless
within collection projects, but, not necessarily seamless across projects. The spatial reference used for tiles of the one-meter
DEM within the conterminous United States (CONUS) is Universal Transverse Mercator (UTM) in units of meters, and in conformance
with the North American Datum of 1983 (NAD83). All bare earth elevation values are in meters and are referenced to the North
American Vertical Datum of 1988 (NAVD88). Each tile is distributed in the UTM Zone in which it lies. If a tile crosses two
UTM zones, it is delivered in both zones. The one-meter DEM is the highest resolution standard DEM offered in the 3DEP product
suite. Other 3DEP products are nationally seamless DEMs in resolutions of 1/3, 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 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 meter Digital Elevation Models (DEMs) - USGS National Map 3DEP Downloadable Data Collection.
-
- creation Date
2018-07-26T19:22:39.501395
Resource language:
Processing environment:
Back to top:
Metadata data stamp:
2018-08-06T19:34:59Z
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 2018-08-06T19:34:59Z
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:988723e5-b093-4520-9ea3-cbfea7769bae
Metadata record format is ISO19139 XML (MD_Metadata)