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对人造卫星观测确定的地球重力场球谐函数系数所对应的密度异常源深度进行了探讨。从不同的角度出发求出了不同阶球谐函数所对应的源之深度。结果表明,低阶球谐函数所对应的源之深度大于1000公里直至核幔边界是可能的,而至25阶的高阶球谐函数所对应的密度异常源均在壳下。
The density anomaly source depth corresponding to the spherical gravitational field coefficient determined by satellite observations was discussed. From different points of view, the depth of source corresponding to different order spherical harmonics is obtained. The results show that it is possible that the depth of the source corresponding to the low-order spherical harmonic function is greater than 1000 km up to the boundary of the mantle and the anomalies of density anomalies corresponding to the higher order spherical harmonic functions of the order 25 are under the shell.