Abstract
Based on the solution of inverse problem for the main magnetic field of Earth, it is shown that the global sources of magnetic field are situated in the equatorial region of the Earth’s core. The estimates of magnetic moments, volumetric currents and their densities are obtained. The direction of the current flow is determined, which can be explained by the motion of the positively charged core matter under the influence of tidal forces, directed against the basic axial rotation of the Earth. The core is positively charged due to migration of electrons across the core-mantle boundary. For the planets of the Solar system estimates of the tidal forces produced by the Sun and the satellites of the planets are obtained. A close linear relationship is established between the magnitude of tidal forces and the observed magnetic field of the planets. As a result, we arrive to a simple geodynamo mechanism in which the electric current is the motion of weakly positively charged liquid core associated with the action of tidal forces.
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