Evaluating ICESat full waveforms over the part of Nyainqêntanglha Mountain range, the Tibetan Plateau

Junchao Shi, M. Menenti, R. Lindenbergh
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引用次数: 0

Abstract

Glaciers in the Tibetan mountains are expected to be sensitive to climate change. The change of glacier mass is locally depending on e.g. precipitation, melting and variation in ice flow. In this paper we analyze the data acquired by ICESat/GLAS laser altimetry, along several tracks over the glaciers of the Nyainqêntanglha range from February, 2003 to November, 2004. The surface characteristics are evaluated within laser footprints over the glacier outlines based on the glaciological inventory on the Tibetan Plateau constructed by CAREERI, CAS. For this purpose, we extract two waveform parameters: the waveform width and the number of modes. These parameters are compared with surface slope and roughness obtained from the ASTER GDEM (Global Digital Elevation Model).
估算青藏高原Nyainqêntanglha山脉部分地区的ICESat全波形
预计西藏山区的冰川对气候变化很敏感。冰川质量的变化局部取决于降水、融化和冰流的变化。本文分析了2003年2月至2004年11月在Nyainqêntanglha冰川上若干轨迹的ICESat/GLAS激光测高数据。基于中国科学院中国冰川研究中心(CAREERI)构建的青藏高原冰川清查资料,对冰川轮廓上的激光足迹表面特征进行了评价。为此,我们提取了两个波形参数:波形宽度和模态数。这些参数与ASTER GDEM(全球数字高程模型)获得的地表坡度和粗糙度进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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