Geophysical Journal | 2008 volume 30 4

Nonequilibrium radiation of the Earth crust as the indicator of the geo dynemycal processes

© Yu.A. Bogdanov, V.N. Pavlovych

This paper discusses the problems of the natural Earth pulse electromagnetic emission appearance and its usage for the Earth interior exploration. We have proposed the model of such emission generation based on the initiation of optical vibrations of complex crystal lattice and therefore associated electromagnetic oscillations that appear due to formation and movement of point, linear (dislocation) and three-dimensional (microcracks, pores) defects of crystals. In solid state physics the electromagnetic radiation associated with inherent (optical) lattice vibrations is called polariton radiation. As long as intensity of defect creation is in direct proportion to de-formation of the crystal, the intensity of the signal generated will be maximal in maximal deformation zones of the Earth crust. This fact allows the application of this radiation for the Earth crust structure study. Referring to polariton emission, the strained rock is active medium, i. e. the existence of radiation stimulates creation and vanishing of defects leading to radiation amplification. Such mechanism of non-linear amplification of electromagnetic waves together with "transparency windows" existence may explain the observed ultraweak attenuation of such electromagnetic waves in the Earth crust. In this work, we gave the examples of geopolariton radiation usage for investigations of the Earth crust structure.

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