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本文采用南纬45度以前的南极地区的自由空间异常及地形的最新数据求其布自异常的分布.并从重力异常方面考查了该地陆区及邻近海域的地下构造.全部陆区出现负异常,这表示巨厚的冰床及基底地形的重量全由地壳均衡地支撑着.在大陆周围的海域部分.大洋中脊比起周围地区相对地存在有负异常地带.进一步详加解析的结果.罗斯海的地下构造与大洋中脊有关联性,而且这一地区岩石圈与软流圈的界面不清,暗示软流圈的境界要上达于地壳的下层.本研究使用了已往有南极的重力与地形的资
In this paper, we use the latest data of the free space anomalies in the Antarctic and latitude 45 degrees south latitude to determine the distribution of the anomalies from the anomaly, and examine the subsurface structures in the continental and adjacent areas from the gravity anomaly. Abnormal, which means that the thick ice sheet and the weight of the topography of the basement are all supported by the crust in a balanced manner. In the part of the sea area around the continent, the mid-ocean ridge has a negative anomaly relative to the surrounding area. . The underground structure of the Ross Sea is associated with the mid-ocean ridge, and the interface between the lithosphere and asthenosphere in this area is unclear, suggesting that the boundary of the asthenosphere should reach the lower crust of the earth.In this study, The gravity and topography of the capital