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Shuttle Radar Topographic Mission Digital Elevation Model Data

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Provider

LandInfo Worldwide Mapping LLC.

LandInfo Worldwide Mapping LLC. provides digital elevation model images (DEMs) for most of the earth,excluding north and south polar areas.

The Shuttle Radar Topography Mission (SRTM) was flown aboard the NASA Space Shuttle Endeavour February 11-22, 2000. This version of the SRTM data was purchased by LandInfo World Mapping from the United States Geological Survey in July 2005.

Description

Shuttle Radar Topographic Mission is a joint project between the U.S. National Aeronautics and Space Administration (NASA) and the National Geospatial Intelligence Agency (NGA). The SRTM project utilized dual Spaceborne Imaging Radar (SIR-C) and dual x-band Synthetic Aperture Radar (X-SAR) to acquire two images simultaneously. When combined, these two images produce a single three-dimensional image.

Water Body Data

These files are a by-product, where the terrain elevation data has been edited to portray water bodies that meet minimum capture criteria (islands with length greater than 300 meters, lakes with length greater than 600 meters and rivers with width greater than 183 meters.

Projection

Geographic (Latitude / Longitude)

Datum

Horizontal Datum: WGS84

Vertical Datum: WGS84 / EGM 96 geoid

Vertical Units: Meters

Resolution

3 arc second (approx. 90m) and 30 second arc tiles

Format & Access

  • SRTM Digital Elevation Model data is in BIL (simple binary raster) format.
  • Water Body Data is in ESRI shapefile format
  • The SRTM Digital Elevation Model data in 30 second arc tiles are also available in image formats as .gif and .jpg.

Sample Images

— Images are courtesy of McMaster University Lloyd Reeds Map Collection

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Data Access

Contact

519–824–4120 ext. 56417

Visit

The DRC is located behind the Research Help desk in the McLaughlin Library.

Check DRC help hours

Last updated January 8th, 2008 by D.B. (details)