Elevation Changes of Antarctic Ice Sheet Derived from
Satellite Laser Altimetry
1 State Key Laboratory of Geodesy and Earth’s Dynamics, Institute of Geodesy and Geophysics,
CAS, 340 Xudong Street, Wuhan 430077,China
2 Key Laboratory of Geo-Informatics of NASMG，28 West-Lianhuachi Road, Beijing 100860,China
3 Key Laboratory for Polar Surveying and Mapping Science of NASMG, 129 Luoyu Road, Wuhan 430079,China
4 University of Chinese Academy of Sciences, A19 Yuquan Road, Beijing 100049,China
Abstract We estimate the temporal and spatial variation of Antarctic ice sheet elevation using repeat track analysis based on all of the ICESat operational periods (19 campaigns), the results show that the elevation of the ice sheet decreased for the past years. Due to the influence of the GIA, We analysis the contribution of three different GIA model and find the average height rates derived from the ICESat campaigns is about -1.17--1 cm/a based on the three different GIA models.
