GTOPO30 was derived from several raster and vector sources of topographic information. For easier distribution, GTOPO30 has been divided into tiles which can be selected from the map shown above. Detailed information on the characteristics of GTOPO30 including the data distribution format, the data sources, production methods, accuracy, and hints for users, is found in the GTOPO30 README link, at the end of this article.
18 February 2011
Global 30 Arc-second Elevation Data : GTOPO30
GTOPO30 was derived from several raster and vector sources of topographic information. For easier distribution, GTOPO30 has been divided into tiles which can be selected from the map shown above. Detailed information on the characteristics of GTOPO30 including the data distribution format, the data sources, production methods, accuracy, and hints for users, is found in the GTOPO30 README link, at the end of this article.
You may also like:
FAIR USE NOTICE: This site contains copyrighted
material the use of which has not always been specifically authorized by the copyright
owner. We are making such material available in our efforts to advance understanding
of environmental, political, human rights, economic, democracy, scientific, and
social justice issues, sustainable development, environmental, community and worker
health, democracy, public disclosure, corporate accountability, and social justice
issues, etc. We have included the full text of the article rather than a simple
link because we have found that links frequently go "bad" or change over time. We
believe this constitutes a "fair use" of any such copyrighted material as provided
for in section 107 of the US Copyright Law. In accordance with Title 17 U.S.C. Section
107, the material on this site is distributed without fee or payment of any kind
to those who have expressed a prior interest in receiving the included information
for research and educational purposes. If you wish to use copyrighted material from
this site for purposes of your own that go beyond 'fair use', you must obtain permission
from the copyright owner.