登入  |  English
感謝您對「自由軟體鑄造場」的支持與愛護,十多年來「自由軟體鑄造場」受中央研究院支持,並在資訊科學研究所以及資訊科技創新研究中心執行,現已完成階段性的任務。 原網站預計持續維運至 2021年底,網站內容基本上不會再更動。本網站由 Denny Huang 備份封存。
也紀念我們永遠的朋友 李士傑先生(Shih-Chieh Ilya Li)。

什麼是資源表列?

catalog-iconOpenFoundry 蒐集與自由軟體相關的連結資訊並將其分類,供您依此資源目錄架構,循序深入自由軟體豐富的應用世界。若此分類下發現有任何問題及建議,非常歡迎您協助我們改進,請寄至[email protected]

GTOPO30

Rate this listing
0 vote
GTOPO30 is a global digital elevation model (DEM) with a horizontal grid spacing of 30 arc seconds (approximately 1 kilometer). 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 file.

GTOPO30, completed in late 1996, was developed over a three year period through a collaborative effort led by staff at the U.S. Geological Survey's EROS Data Center (EDC). The following organizations participated by contributing funding or source data: the National Aeronautics and Space Administration (NASA), the United Nations Environment Programme/Global Resource Information Database (UNEP/GRID), the U.S. Agency for International Development (USAID), the Instituto Nacional de Estadistica Geografica e Informatica (INEGI) of Mexico, the Geospatial Information Authority of Japan (GSI) Manaaki Whenua Landcare Research of New Zealand, and the Scientific Committee on Antarctic Research (SCAR).

License:Publish Domain