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US GeoData digital elevation models

Fact Sheet 102-96

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Abstract

Digital elevation model (DEM) data consist of a sampled array of regularly spaced elevation values referenced horizontally either to a Universal Transverse Mercator (UTM) projection or to a geographic coordinate system. The grid cells are spaced at regular intervals along south to north profiles that are ordered from west to east. the U.S> Geological Survey (USGS) produces five primary types of elevation data: 7.5-minute DEM, 30-minute DEM, 1-degree DEM, 7.5-minute Alaska DEM, and 15-minute Alaska DEM.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
US GeoData digital elevation models
Series title:
Fact Sheet
Series number:
102-96
Year Published:
1997
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Description:
2 p.