Izvestiya, Physics of the Solid Earth

, Volume 50, Issue 3, pp 403–414 | Cite as

Seismic moment tensor of Pribaikalye earthquakes from the surface-wave amplitude spectra

Article

Abstract

The method of surface-wave amplitude spectra inversion for the seismic moment tensor (SMT) is implemented and tested in the Pribaikalye region. The SMTs are calculated for 39 events with Mw = 4.4–6.3, which occurred in the region in 2000–2011. Based on the obtained data, the seismotectionic deformations of the crust are estimated in two seismically active areas-the Northern Pribaikalye and northeastern Baikal rift zone. It is found that on a level of moderate-magnitude events, the region is dominated by the regimes of subhorizontal northwestern extension and strike-slip faulting, which reflects the long-term trends in the stress field of the crust in these parts of the rift.

Keywords

seismic moment tensor of the earthquake surface waves seismotectonic deformation of the crust 

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© Pleiades Publishing, Ltd. 2014

Authors and Affiliations

  1. 1.Institute of the Earth’s Crust, Siberian BranchRussian Academy of SciencesIrkutskRussia

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