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The January 6, 2006, Balei earthquake as a reflection of the present tectonic activity of the east Trans-Baikal Region

The January 6, 2006, Balei earthquake as a reflection of the present tectonic activity of the... The results of detailed studies of the January 6, 2006, Balei earthquake ( K p = 13.1, M b = 4.7 (7)), which occurred in an almost aseismic area of the east Trans-Baikal Region, are presented. The focal mechanism and dynamical characteristics of the focus are considered, and the structural-tectonic position of the focus is analyzed. It is supposed that the focus of this seismic event coincides with an activated segment of the northwest-striking Balei-Darasun fault. The maximal observed macroseismic intensity was 5–6 points by the MSK-64 scale (in the town of Baleis). The origination of foci for the earthquake with such intensity and magnitude takes place substantially owing to subhorizontal northeastern compression, the varied-rank block structure of the medium, and low rate values of tectonic motions; on aggregate, all these factors promote the accumulation of stresses in the Earth’s crust. The obtained data can be useful for the purpose of assessment in seismic danger of the region. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Doklady Earth Sciences Springer Journals

The January 6, 2006, Balei earthquake as a reflection of the present tectonic activity of the east Trans-Baikal Region

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References (7)

Publisher
Springer Journals
Copyright
Copyright © 2011 by Pleiades Publishing, Ltd.
Subject
Earth Sciences; Earth Sciences, general
ISSN
1028-334X
eISSN
1531-8354
DOI
10.1134/S1028334X11040222
Publisher site
See Article on Publisher Site

Abstract

The results of detailed studies of the January 6, 2006, Balei earthquake ( K p = 13.1, M b = 4.7 (7)), which occurred in an almost aseismic area of the east Trans-Baikal Region, are presented. The focal mechanism and dynamical characteristics of the focus are considered, and the structural-tectonic position of the focus is analyzed. It is supposed that the focus of this seismic event coincides with an activated segment of the northwest-striking Balei-Darasun fault. The maximal observed macroseismic intensity was 5–6 points by the MSK-64 scale (in the town of Baleis). The origination of foci for the earthquake with such intensity and magnitude takes place substantially owing to subhorizontal northeastern compression, the varied-rank block structure of the medium, and low rate values of tectonic motions; on aggregate, all these factors promote the accumulation of stresses in the Earth’s crust. The obtained data can be useful for the purpose of assessment in seismic danger of the region.

Journal

Doklady Earth Sciences – Springer Journals

Published: Apr 1, 2011

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