  The present paper deals with an attempt to check up the theoretical model of
self-generated seismo-electromagnetic oscillations of LAI system on the basis
of retrospective data. Application of the offered simple model enables one to
explain qualitatively the mechanism of VLF electromagnetic emission initiated
in the process of an earthquake preparation. It is worth to pay attention to
the fact that frequency changes from MHz to kHz in electromagnetic emission
spectrum comes to a good agreement with avalanche-like unstable model of fault
formation. L'Aquila earthquake taken as an example to isolate reliably the
Earth VLF emission from the magnetospheric electromagnetic emission of the same
frequency range, MHD criterion is offered together with geomagnetic activity
indexes. On the basis of the considered three earthquakes, according to the
opinion of authors the model of self-generated seismo-electromagnetic
oscillations of the LAI system will enable us to approach the problem of
resolution of earthquake prediction by certain accuracy.
