1715—1980年的核—幔边界磁场图,揭示出了磁场的静态特征、以及在大部分核—幔边界上不存在西向漂移现象。这种静态特征说明,地核中的流动是和地幔热耦合的。本文研究了各种耦合机制,并预言在核—幔边界上存在着横向不均匀性。这促进了用地震方法和大地水准面方法得到的下地幔和核—幔边界模型的比较,虽然要与分辨率很高的磁场进行详细的比较,它们的分辨率普遍是不够的。 The nuclear magnetic map of the core-mantle boundary from 1715 to 1980 revealed the static characteristics of the magnetic field and the absence of westward drift over most of the core-mantle boundary. This static feature shows that the flow in the earth’s core is thermally coupled with the mantle. In this paper, various coupling mechanisms are studied and it is predicted that there is lateral inhomogeneity on the boundary of the core-mantle. This has facilitated the comparison of the lower-mantle and core-mantle boundary models obtained by the seismic and geoid methods and their resolution is generally inadequate, though they are compared in detail with highly resolved magnetic fields.