Manifestation of seismic activity in variations of the EM field and basic ionospheric characteristics

Abstract

The theoretical analysis of manifestation of seismic events in the electromagnetic field and fluctuations of the ionospheric parameters is presented. The three-dimensional case is investigated with due account of nonlinear, dispersive and dissipative properties of a medium. This give us a possibility to conduct more accurate study of influence of seismic activity in near and far zones of the epicenters of the earthquakes. It is demonstrated that EM response, as some precursor of the seismic event, can be observed ahead the seismic wave front, and its amplitude exponentially decreases with propagation. As for the ionospheric response, the post-effects at ionospheric heights are studied. It is very important for understanding and explaining of relations in the Earth-atmosphere-ionosphere system.