Evaluation of the Shuttle Radar Topography Mission digital elevation model and application to the modeling of permanent deformation: Case studies on the North Mono eruption, California (1,325--1,368 A.D.) and Glacial Lake Iroquois, New York (12,200 yr B.P.).

摘要

The Shuttle Radar Topography Mission (SRTM) is the first global and contiguous topographic dataset spanning the latitudes of 60°N and 56°S. It used single pass interferometry synthetic aperture radar to record elevations across the Earth's surface producing a 30x30 m digital elevation model (DEM). Since the first release of the data, SRTM DEM V1, corrections have been made and released as the SRTM DEM V2. The purpose of this study is to investigate the SRTM DEM V2 and determine its vertical accuracy by checking it against the National Map Accuracy Standards (LAMAS) standards for maps with a scale of 1:24000 over the regions of Mono Lake, California and Central New York. Consideration of these study areas is based on the variations in the number of data takes and differences in vegetation cover. When the SRTM was compared to the DEMs produced by Topographic Synthetic Aperture Radar (TOPSAR) and National Elevation Dataset (NED) it passed the WAS and the SRTM specifications of 16 m Root Mean Square Error (RMSE) vertical error. (Abstract shortened by UMI.)