A New Look On the Nature of the Earth's Magnetic Field

Abstract

There was examined the model of the Earth's dipole magnetic field based on the existing geothermocurrents in the Earth's core, that occurred because of the geothermal gradient and the related Seebeck effect. The calculations showed, that the energy of geothermocurrents is enough to keep Earth's Magnetic Field (EMF) at the present level, that is about (3 - 5)10-5 T. EMF model is quite innovative in comparison to the known electrical models, because it contains two branches of the planetary thermoelectrical element: “inner core - outer core - lower mantel”. These branches are connected through the more warmed and melted outer core. If the thermocurrents are simultaneously directed to the Earth's surface, a thaw period comes. If they are directed oppositely an ice age comes. As the directions of thermocurrents in the inner core change, EMF poles get inverted. At the moment of their inversion dipole magnetic field decreases up to its transitional disappearance. At the same time the pole caused by the lower mantel stays as 4.6 10-6 T. Thermoelectrical EMF model is universal. It enables us to calculate magnetic fields of any planet within the Solar System.