EARTHQUAKE: INCIDENCE OF TERRESTRIAL MAGNETISM WITH FOUCAULT CURRENTS DURING PREPARATORY PHASES AND DURING SEISMIC RETURNS

Abstract

Contrarily to electric field, the magnetic one has a non-vanishing value inside an electric conductor as for example the Earth. Thus, the terrestrial magnetism could generate, in accord with propitious conditions, Foucault currents in all conducting particles in the crust of the earth. It is enough that these particles move or change their forms to modify the crossing magnetic flow (especially few time before an earthquake, by the contact and crack mechanic inside and around the fault). Thus created Foucault currents would naturally migrate to the surface of conductor – Earth and would constitute signals susceptible to play the role of seismic precursors.