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本文根据ＯＳＵ９１Ａ地球重力场模型和地形资料，计算了南极洲的空间重力异常和布格重力异常，分析了空间重力异常变化剧烈的原因及其与高程的相关性，同时根据布格重力异常用两层界面的反演方法计算了冰盖厚度和地壳厚度，冰盖厚度较大的地区位于极区的东南部，而极区周围和西南部地区厚度较小。地壳较厚的地区位于极区的东南部，最大达５６ｋｍ，西南部地区地壳较薄，最小值为８ｋｍ。
Based on the OSU91A Earth's gravity field model and the terrain data, the spatial gravity anomalies and Bouguer gravity anomalies in Antarctica are calculated. The reasons for the dramatic changes in gravity anomalies and their correlation with elevation are analyzed. According to the Bouguer gravity anomalies, The ice sheet thickness and crustal thickness are calculated by the inversion method. The areas with large ice sheet thickness are located in the southeast part of the polar region, while the thickness around the polar region and the southwestern part is small. The thick crust is located in the southeast of the polar region with a maximum of 56 km. The crust is thin in the southwest, with a minimum of 8 km.