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The status of the world's public‐domain digital topography of the land and ice

The status of the world's public‐domain digital topography of the land and ice There has been no reasonably comprehensive survey of what digital, elevation models of the Earth's land surface exist in the public‐domain. We have performed a survey of these data, and we report on the coverage and cost of the data we have established. To qualify for inclusion in our coverage, we required the data to be available to the general public, obtainable from a specific, identified institution, and to have a determined cost. We have established that at 100 m resolution coverage exists of most of the the developed world. In the United States and Australia, the data are available at cost, at around 3000 km2 £−1. In the remaining countries, the data are available from mapping agencies with varying commercial pricing strategies. The total cost of the data we have identified is £ 1,688,312. For much of the world we are unable to confirm the existence of such data, and our experience is that in these regions it will prove difficult to obtain digital, elevation data, if, indeed, it exists at all. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Geophysical Research Letters Wiley

The status of the world's public‐domain digital topography of the land and ice

Geophysical Research Letters , Volume 19 (23) – Dec 2, 1992

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References (13)

Publisher
Wiley
Copyright
Copyright © 1992 by the American Geophysical Union.
ISSN
0094-8276
eISSN
1944-8007
DOI
10.1029/92GL01886
Publisher site
See Article on Publisher Site

Abstract

There has been no reasonably comprehensive survey of what digital, elevation models of the Earth's land surface exist in the public‐domain. We have performed a survey of these data, and we report on the coverage and cost of the data we have established. To qualify for inclusion in our coverage, we required the data to be available to the general public, obtainable from a specific, identified institution, and to have a determined cost. We have established that at 100 m resolution coverage exists of most of the the developed world. In the United States and Australia, the data are available at cost, at around 3000 km2 £−1. In the remaining countries, the data are available from mapping agencies with varying commercial pricing strategies. The total cost of the data we have identified is £ 1,688,312. For much of the world we are unable to confirm the existence of such data, and our experience is that in these regions it will prove difficult to obtain digital, elevation data, if, indeed, it exists at all.

Journal

Geophysical Research LettersWiley

Published: Dec 2, 1992

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