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Russian Geology and Geophysics

2013 year, number 2

ACCELERATION RESPONSE SPECTRA FOR THE EARTHQUAKES OF THE SOUTHWESTERN FLANK OF THE BAIKAL RIFT ZONE

A.F. Drennov, V.I. Dzhurik, S.P. Serebrennikov, E.V. Bryzhak, N.N. Drennova
Keywords: Acceleration response spectra, strong earthquakes, sense of fault motion, Baikal Rift Zone
Pages: 223-230

Abstract

The acceleration response spectra of earthquakes with M = 4.0—6.5 in the southwestern part of the Baikal Rift Zone have been studied. The absorption properties of the medium and the attenuation of seismic signals in the study region were determined. Average acceleration response spectra were obtained for regional earthquakes. A comparative analysis of the acceleration response spectra was made for earthquake’s focal mechanisms with different senses of motions: reverse faults, reverse slip, strike slip, and oblique slip. The effect of the sense of fault motion in the seismic source on acceleration response spectra was determined.