NDLI: Lithospheric stress and strain and the seismicity in the Belin-Busiingol fault zone, southern Baikal region

Content Provider	Springer Nature Link
Author	Dem’yavich, V. M. Klyuchevskii, A. V. Chernykh, E. N.
Copyright Year	2008
Abstract	This paper presents a space-time analysis of lithospheric stress and strain along with seismicity for the Belin-Busiingol fault zone in the southwestern flank of the Baikal Rift Zone (BRZ). It was found that large earthquakes tended to occur around the fault-slip line on the earth’s surface, and that an axial zone ±15 km wide contains more than 90% of all seismotectonic deformation and stress drops, mostly due to smaller shocks. The discrepancy between the simple seismicity pattern and the complex space-time structuring of the stress and strain is explained by the dominant effect of the large 1974, 1976, and 1991 earthquakes and their aftershock sequences, which have considerably simplified the formalized description of seismicity. The stress and strain in the fault zone is inhomogeneous and unstable. The observed discrepancy in the space-time occurrence of different types of slip at the foci of smaller and larger earthquakes seems to have been due to the varying responses of different-sized failure elements in the fault zone to stress changes. The dynamics of the stress field in the fault zone are in good agreement with the stress variations in the lithosphere of the southern Baikal Region and the BRZ, but the influence of shear deformation in the Altai and western Mongolia began to be felt in the late 1960s.
Starting Page	40
Ending Page	54
Page Count	15
File Format	PDF
ISSN	07420463
Journal	Journal of Volcanology and Seismology
Volume Number	2
Issue Number	1
e-ISSN	18197108
Language	English
Publisher	Nauka/Interperiodica
Publisher Date	2008-04-03
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Geophysics/Geodesy Geochemistry Geology
Content Type	Text
Resource Type	Article
Subject	Geology Geochemistry and Petrology Geophysics

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