SPOT5-HRS digital elevation models and the monitoring of glacier elevation changes in North-West Canada and South-East Alaska
- 作者：Etienne Berthier ; Thierry Toutin
- 关键词：Glacier ; Ice cap ; Climate change ; Glacier surge ; International Polar Year ; Topography ; DEM ; SPOT5 ; SRTM ; ICESAT ; Alaska ; British Columbia
- 刊名：Remote Sensing of Environment
- 出版年：2008
- 期刊代码：79_00344257
- 类别：ear
- 出版时间：15 May 2008
- 卷：112
- 期：5
- 页码：2443-2454
- 文件大小：3079 K
摘要
Monitoring the response of land ice to climate change requires accurate and repeatable topographic surveys. The SPOT5-HRS (High Resolution Stereoscopic) instrument covers up to 120 km by 600 km in a single pass and has the potential to accurately map the poorly known topography of most glaciers and ice caps. The acquisition of a large HRS archive over ice-covered regions is planned by the French Space Agency (CNES) and Spotimage, France during the 2007–2008 International Polar Year (IPY). Here, we report on the accuracy and value of HRS digital elevation model (DEM) over ice and snow surfaces.