Geophysical processes and biosphere: article

Аnnotation: Detailed seismological studies performed by the seismological expedition of the Institute of Physics of the Russian Academy of Sciences in 1999-2001 in the vicinity of the Bushehr nuclear power plant in the territory of Southern Iran, allowed, in particular, developing a technique for determining the focal mechanisms of earthquakes using the direction of S-wave polarization in weak close seismic events. In the present work, the results of reconstruction of such determinations are compared with the focal mechanisms of strong earthquakes, determined in the ISC catalogs by the standard method, and with modern concepts of tectonic deformation of the Earth's crust in a wide neighborhood of the study area. It is established that the reconstruction carried out is in good agreement with both the typification of motions in the centers of strong earthquakes and with modern ideas about the nature of deformation of the Earth's crust within the observational network. This allows us to recommend the proposed methodology for reconstructing focal mechanisms for use in other regions.