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

文献类型： 外文期刊

第一作者： Liu, Guang

作者： Liu, Guang;Dou, Chang-yong;Fan, Jing-hui;Fan, Jing-hui;Zhao, Feng;Mao, Ke-biao

作者机构：

关键词： Elevation change;Glacier;Synthetic aperture radar interferometry;TanDEM-X;Geladandong mountain;Tibetan Plateau

期刊名称：JOURNAL OF MOUNTAIN SCIENCE （ 影响因子：2.071； 五年影响因子：2.113 ）

ISSN： 1672-6316

年卷期： 2017 年 14 卷 5 期

页码：

收录情况： SCI

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.

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