Greenland Ice Sheet Surface Properties and Ice Dynamics from ERS-1 SAR Imagery
Greenland Ice Sheet Surface Properties and Ice Dynamics from ERS-1 SAR Imagery
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DOI：
10.1126/science.262.5139.1530
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发表时间：
1993-12
期刊：
影响因子：
56.9
通讯作者：
M. Fahnestock;R. Bindschadler;R. Kwok;K. Jezek
中科院分区：
文献类型：
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作者：
M. Fahnestock;R. Bindschadler;R. Kwok;K. Jezek
来自欧洲航天局 ERS-1 卫星的 C 波段合成孔径雷达 (SAR) 图像揭示了格陵兰冰盖表面的基本分区。这些区域具有与积雪结构相关的反向散射特征，该特征随着不同海拔处积雪和融化的平衡而变化。使用这种高分辨率图像可以准确定位区域的边界。这些图像还揭示了格陵兰岛东北部的大型水流特征，类似于南极洲的冰流，可能在冰盖的冰排出过程中发挥着重要作用。
C-band synthetic aperture radar (SAR) imagery from the European Space Agency's ERS-1 satellite reveals the basic zonation of the surface of the Greenland Ice Sheet. The zones have backscatter signatures related to the structure of the snowpack, which varies with the balance of accumulation and melt at various elevations. The boundaries of zones can be accurately located with the use of this high-resolution imagery. The images also reveal a large flow feature in northeast Greenland that is similar to ice streams in Antarctica and may play a major role in the discharge of ice from the ice sheet.