以地球内部结构为立论基础和现代物理学中的引力理论和粒子理论为理论根据,阐明了地球外壳与内核运动的差异性,进而提出了以摩擦起电为主的差速发电机制和地磁场的形成机理,总结出了地球内核旋转轴上任一点的强度计算公式和地磁极性的判别方法,并解释了地磁学中的磁轴问题、磁极漂移和地磁场的极
性转换。

In this paper, discusses the difference of the rotating speeds between the earth external-shell and internal-core basing on both the internal structure and the theories of gravitation and particle in physics of today. The paper puts the genesis of the generating electricity by the difference of the velocity because the friction mainly causes electricity, and puts the genesis of the dipole magnetic field in the earth. The paper concluds the intensitive formation in any point of rotating axis of internal core in the earth and the method of determining the geomagnetics-pole characteristics, and explains the the critical questions of magnetic axis,magnetic pole drift and polarity transform of geomagnetic field in the geomagnetics.