The Dynamo Theory of the Earth's Main Magnetic Field.

Abstract

The possibility of the dynamo action in the earth core is considered in the case when the toroidal fluid velocity is larger than the poloidal velocity. Infinite numbers of stationary dynamos, each corresponding to a different eigen-value y=4πκaV2·2c, are shown to be possible there. The dynamo including the dipole field is that for the smallest y. The geophysical significance of this result is considered in section 4. A mechanism of rever sion of the earth's main magnetic field is proposed in section 4.