The SRTM tiles are DEM data divided in to one degree blocks for the surface of the earth. The data is divided into two resolutions, one at 3 arc seconds (90m) and one at 30 arc seconds (900m). 80% of the earths surface is covered for all of the area between 60 degrees N and 53 degrees S. SRTM data is in WGS84 datum and the elevation units are in metres. Digital Elevation Data for creating contours and other spatial analysis. World DEM data.
Creator
NASA / USGS
Date of creation
2005
Temporal extent
2000
Publisher
Land Information Worldwide Mapping, LLC
Edition
2000
Scale
30 arc second (approx. 1km)/ 1:500,000
Datum
WGS84
Data type
Require acknowledgement to use
None
Cost for use
None
Medium
web
Subjects
Geography
Open data
Restrictions
Public
Index link