利用ICESat测量南极冰盖表面高程变化  

CHANGE OF SURFACE ELEVATION IN ANTARCTIC ICE SHEETS BY ICESAT MEASUREMENT

作　　者：鄂栋臣[1] 袁乐先[1] 杨元德[1] 张胜凯[1] 谢苏锐[1] 赵云[1] 宁新国[1] 

机构地区：[1]武汉大学中国南极测绘研究中心,武汉430079

出　　处：《大地测量与地球动力学》2014年第6期41-43,49,共4页Journal of Geodesy and Geodynamics

基　　金：国家重大科学研究计划项目(2012CB957701;2013CBA01804);国家自然科学基金项目(41176173);南北极环境综合考察及资源潜力评估项目(CHINARE2014);武汉大学珞珈青年学者项目

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。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.

关 键 词：ICESAT 卫星测高 重复轨道 南极 冰盖 

分 类 号：P223[天文地球—大地测量学与测量工程]