GTOPO30

GTOPO30 is a digital elevation model for the world, developed by United States Geological Survey (USGS). It has a 30-arc second resolution (approximately 1 km), and is split into 33 tiles stored in the USGS DEM file format. According to DTED and USGS DEM the absolute vertical accuracy of GTOP30 varies from ±30 meters.

Gallery

This map is derived from GTOPO30 data that describes the elevation of Earth's terrain at intervals of 30 arcseconds (approximately 1 km). It uses hypsometric tints instead of contour lines to indicate elevation.

N60-90, W150-180	N60-90, W120-150	N60-90, W90-120	N60-90, W60-90	N60-90, W30-60	N60-90, W0-30	N60-90, E0-30	N60-90, E30-60	N60-90, E60-90	N60-90, E90-120	N60-90, E120-150	N60-90, E150-180
N30-60, W150-180	N30-60, W120-150	N30-60, W90-120	N30-60, W60-90	N30-60, W30-60	N30-60, W0-30	N30-60, E0-30	N30-60, E30-60	N30-60, E60-90	N30-60, E90-120	N30-60, E120-150	N30-60, E150-180
N0-30, W150-180	N0-30, W120-150	N0-30, W90-120	N0-30, W60-90	N0-30, W30-60	N0-60, W0-30	N0-60, E0-30	N0-60, E30-60	N0-60, E60-90	N0-60, E90-120	N0-60, E120-150	N0-60, E150-180
S0-30, W150-180	S0-30, W120-150	S0-30, W90-120	S0-30, W60-90	S0-30, W30-60	S0-30, W0-30	S0-30, E0-30	S0-30, E30-60	S0-30, E60-90	S0-30, E90-120	S0-30, E120-150	S0-30, E150-180
S30-60, W150	S30-60, W120	S30-60, W90-120	S30-60, W60-90	S30-60, W30-60	S30-60, W0-30	S30-60, E0-30	S30-60, E30-60	S30-60, E60-90	S30-60, E90-120	S30-60, E120-150	S30-60, E150-180
S60-90, W150-180	S60-90, W120-150	S60-90, W90-120	S60-90, W60-90	S60-90, W30-60	S60-90, W0-30	S60-90, E0-30	S60-90, E30-60	S60-90, E60-90	S60-90, E90-120	S60-90, E120-150	S60-90, E150-180
Each tile is available at a resolution of 1800 × 1800 pixels (approximate file size 1 MB, 60 pixels = 1 degree, 1 pixel = 1 minute)

See also

• Shuttle Radar Topography Mission
• Advanced Spaceborne Thermal Emission and Reflection Radiometer

External links

• GTOPO30 Page.