SOURCE PARAMETERS of STRONG EARTHQUAKES of the EARTH

Abstract

For nine strongest earthquakes in Russia and the World, dynamic parameters were determined. They were calculated from the P-wave spectra recorded by IRIS-IDA digital equipmentat Obninsk (OBN), Talaya (TLY) and Arti (ARU) stations at the epicentral distances =30–80°.The following parameters are given: seismic moment, rupture length, stress drop and apparent stress, average displacement during rupture of earthquake. The moment magnitude Mw obtained from seismic moment M0 at Obninsk, Talaya, and Arti stations was calculate by the formula of H. Kanamori.A comparison of the obtained parameters M0 and Mw with the data of the GCMT international center showed their proximity.