利用CryoSat-2卫星研究南极Dome A地区冰盖高程变化

Using CryoSat-2 Satellite to Study Ice Sheet Elevation Change of Dome A Region in Antarctic

利用CryoSat-2卫星的数据研究了南极Dome A地区2011-2014年间的冰盖高程变化,统计了不同年份交叉点不符值的变化情况,提示了Dome A地区的季节性变化特征。利用2011-2014年的数据分别绘制了南极Dome A地区的数字高程模型,统计了各个模型间的差值和标准差,确定了Dome A地区最高点的位置及其高程,并且与ICESat卫星以及第21次中国南极科学考察得出的结果进行了对比,结果较为一致。

This paper studies ice sheet elevation change in antarctic Dome A region from 2011 to 2014 by using the CryoSat-2 satellite data.The variation of cross point discrepancy in different years is calculated,the seasonal variation characteristics of Dome A region are suggested.Digital elevation model of South Pole Dome A region was drawn by using the data from 2011 to 2014.The difference and standard deviations between models were calculated,and the position and elevation of the highest point in Dome A region were determined.Compared with the results of ICESat satellite and the 21st Chinese National Antarctic,their results are consistent.