Monitoring elevation change of glaciers on Geladandong Mountain using TanDEM-X SAR interferometry

被引:22
作者
Liu, Guang [1 ]
Fan, Jing-hui [2 ,3 ]
Zhao, Feng [4 ]
Mao, Ke-biao [5 ]
Dou, Chang-yong [1 ]
机构
[1] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China
[2] China Aero Geophys Survey, Beijing 100083, Peoples R China
[3] Remote Sensing Ctr Land & Resources, Beijing 100083, Peoples R China
[4] Beihang Univ, Sch Instrumentat Sci & Optoelect Engn, Beijing 100191, Peoples R China
[5] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China
基金
对外科技合作项目(国际科技项目); 美国国家科学基金会;
关键词
Elevation change; Glacier; Synthetic aperture radar interferometry; TanDEM-X; Geladandong mountain; Tibetan Plateau; ICE-SHEET MOTION; SATELLITE RADAR INTERFEROMETRY; MASS-BALANCE; ACCURACY ASSESSMENT; TOPOGRAPHY; GREENLAND; KARAKORAM; ALASKA; HIMALAYA; RETREAT;
D O I
10.1007/s11629-016-3992-5
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Glaciers play an important role in the climate system. The elevation change of a glacier is an important parameter in studies of glacier dynamics. Only a few ground-based measurements of high mountain glaciers are available due to their remoteness, high elevation, and complex topography. The acquisition from the German TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement) SAR imaging configuration provides a reliable data sources for studying the elevation change of glaciers. In this study, the bistatic TanDEM-X data that cover the Geladandong Mountain on the Tibetan Plateau were processed with SAR interferometry technique and the elevation changes of the mountain's glaciers during 2000-2014 were obtained. The results indicated that although distinct positive and negative elevation changes were found for different glacier tongues, the mean elevation change was about -0.14 +/- 0.26 m a(-1). Geoscience Laser Altimeter System (GLAS) data were obtained for comparison and verification. The investigation using GLAS data demonstrated the efficacy of the proposed method in determining glacier elevation change. Thus, the presented approach is appropriate for monitoring glacier elevation change and it constitutes a valuable tool for studies of glacier dynamics.
引用
收藏
页码:859 / 869
页数:11
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