依据沿大圆弧穿越南极点和斯科特站两地震台的地震瑞利面波波形资料，计算了两台之间的相速度频散，通过反演计算，获得了台间地下２００ｋｍ 岩石圈剪切波速度细结构。结果表明，横贯南极山脉地壳厚度约为４５ｋｍ ，５５～７５ｋｍ 之间存在明显低速带，它预示着这一深度有熔融的岩浆存在。 According to the seismic Rayleigh wave data of two seismometers crossing the south pole and the Scott station, the frequency dispersion of two phases was calculated. Based on the inversion calculation, the lithosphere Shear wave velocity fine structure. The results show that the thickness of the crust across the Antarctic Mountains is about 45 km and there is a clear low velocity zone between 55 km and 75 km, which indicates the existence of molten magma at this depth.