Thermoelectric Currents of Earth’s Core Generate the Earth’s Magnetic Field

Arkadiy Nikolaevich Dmitriev

doi:10.4236/ijg.2017.88059

Abstract

The geotemperature gradient is considered as taking main part in generating the Earth’s magnetic field. It is shown that geotemperature gradient functions as a generator of both nuclear and mantle thermoelectrical currents thanks to the great temperature difference between the core and the mantle. The movement of those currents is close to the radial direction towards the Earth’s crust. However, the nuclear thermocurrents movement tends to cyclically change into opposite one. If the mantle and core thermocurrents move oppositely, the Earth’s crust cools down globally and ice age comes, but if they move unidirectionally then global warming comes. The calculation show that the Earth’s surface can warm up to not more than 10°C. The latter, considering how human factor affects the warming of Earth, is incomparably great. There are calculations that show power of the Earth’s thermocurrents being enough to generate and maintain the Earth’s magnetic field, its modern dynamics and the poles inversion.

Highlights

At the present time, the most elaborate theory of substantiating electrical currents generation in the planet’s metal core is based on hydromagnetic dynamo which works on the self-excitation principle
The article shows that the Earth’s body has an advantageous combination of such physical elements as the electroconductivity of the metal core and the temperature difference between the planet center and the lower mantle, which is determined by the geotemperature gradient
It is known from the physics, that interaction of those factors inevitably leads to appearance of both thermo e.m.f

Summary

Introduction

The most elaborate theory of substantiating electrical currents generation in the planet’s metal core is based on hydromagnetic dynamo which works on the self-excitation principle. He thought that the forth from right member [∇η,∇T ] was different from zero and generated the star’s magnetic field, whereas the first three members could be neglected because they were small and could not be performed at the considered model of moving unmagnetized plasm. There is the third attempt to reanimate geothermoelectrical currents below It is shown on the example of Earth that those geothermocurrents, moving directionally inside the conducting shells (the core and the lower mantle) and affected by the great difference of geotemperatures, can generate not raw but real powerful magnetic fields of Earth and other “hot” planets of the solar system, because the phenomenon is universal. The schematic geothermoelectrical model (protomodel) of the Earth’s magnetic field is considered for the first time in the author’s article [15]

Calculations of Magnetic Field for the Lower Mantle

Magnetic Field Calculations for the Metallic Core of the Earth

Thermoelectrical Model of Earth’s Magnetic Field

Briefly about the Cyclicity of Cooling and Warming of the Earth’s Crust

The Calculation of the Expected Temperature Warming of the Earth’s Crust

Conclusions