Study of Seismo Effects in Electromagnetic Field and Ionosphere

Abstract

The results of study of displaying of seismic activity in variations of both the electromagnetic (EM) field and the basic ionospheric characteristics are presented. The 3D case is considered taking into account the effects of weak nonlinearity, dispersion and dissipation in medium, that allows us to obtain more accurate re-sults for both the near and far zones from the earthquake epicenter. In study of the seismic response in the EM field, it is shown that a precursor arises ahead the front of seismic wave, its amplitude decreases exponentially with distance. Re-garding the response at ionospheric heights, the seismo-ionospheric post-effects have been studied, which are of great interest, in particular, for a better under-standing of relationships in the system "solid Earth - atmosphere - ionosphere".