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中文摘要：
采用2004~2008年的ICESat测高冰盖表面高程数据GLA12,利用重复轨道算法,计算了南极冰盖在这期间的高程变化率。结果显示,在西南极沿岸部分地区,冰盖高程变化较为活跃,部分区域每年高程减少量超过3m;东南极内陆地区,冰盖高程变化则相对稳定,部分沿海地区高程有所降低。
英文摘要：
ICESat is the first satellite with laser altimeter. One of its purposes is to determinate the changes of Antarctic ice sheets. The repeat track analysis method was applied to calculate elevation changes of Antarctic ice sheets with ICESat GLA12 data from 2004 to 2008. The results show that the elevation changed evidently in West Antarctica, and decreased in many parts. However, the elevation changed does not obviously in the East Antarctic in- land areas, decreases in parts of the East Antarctic coasts.
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