Physics
Scientific paper
Jan 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3401302c&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 1, CiteID L01302
Physics
2
Global Change: Solid Earth (1225), Global Change: Remote Sensing (1855), Hydrology: Geomorphology: General (1625), Hydrology: Remote Sensing (1640), Hydrology: Instruments And Techniques: Modeling
Scientific paper
The Shuttle Radar Topographic Mission (SRTM) produced digital elevation models (DEMs) of most of Earth's land surface, but the radar observational geometry resulted in data voids in areas of high relief. Here we test the derivation of elevation from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) nighttime thermal data for the purpose of filling these voids. The method uses the general linear relationship between temperature and altitude as described by the environmental lapse rate. The results for the test area are generally superior to void filling by interpolation, particularly where voids cross ridges or canyons. Errors associated with the approach are identified along with potential improvements.
Crippen Robert E.
Fielding Eric J.
Hook Simon J.
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