SEISMICITY of BAIKAL and TRANSBAIKALIA in 2015-Reference-Cited by-同舟云学术

SEISMICITY of BAIKAL and TRANSBAIKALIA in 2015

Published:2021-12-14 Issue:24 Volume: Page:129-138
ISSN:1818-6254
Container-title:Earthquakes in Northern Eurasia
language:ru
Short-container-title:

Author:

Melnikova V.¹^ORCID,Gileva N.²,Filippova A.³,Radziminovich Ya.¹^ORCID,Kobeleva E.²

Affiliation:

1. Institute of the Earth’s crust SB RAS, Irkutsk; Baikal branch of GS RAS, Irkutsk

2. Baikal branch of GS RAS, Irkutsk

3. Pushkov institute of terrestrial magnetism, ionosphere and radio wave propagation RAS, Moscow, Troitsk

Abstract

We consider the character of the seismic process in the Baikal and Transbaikalia regions in 2015. 36430 earthquakes with KR≥3 were recorded by seismic stations of permanent and temporary networks during the year due to the sharp increase of a number of seismic events at the north-east of the study region in the area of the large Muyakan seismic activation. 53 earthquakes were felt in the cities, towns and local settlements with an intensity not exceeding 6. The largest Tallaysk earthquake (KR=14.0, Mw=5.1) occurred at the North-Muya Ridge and was followed by few aftershocks. Focal mechanisms were determined for 118 seismic events from P-wave first-arrival polarities and based on seismic moment tensors inverted from the surface wave data. It has been found, that normal faults are realized in the sources of 49 % of earthquakes with the obtained focal mechanisms.

Publisher

Geophysical Survey of the Russian Academy of Sciences - GS RAS

Reference23 articles.

1. Gileva, N.A., & Kobeleva, E.A. (2021). [Seismic stations of the Baikal branch of the GS SB RAS (network code BAGSR) in 2015]. Zemletriaseniia Severnoi Evrazii [Earthquakes in Northern Eurasia], 24(2015). Electronic supplement. Retrieved from http://www.ceme.gsras.ru/zse/app-24.html (In Russ.).

2. Sanzhieva, D.P-D., & Predein, P.A. (2021). [Seismic stations of the Buryat branch of the GS SB RAS (network code BUGSR) in 2015]. Zemletriaseniia Severnoi Evrazii [Earthquakes in Northern Eurasia], 24(2015). Electronic supplement. Retrieved from http://www.ceme.gsras.ru/zse/app-24.html (In Russ.).

3. Golenetsky, S.I. (1988). [Earthquakes in the Baikal and Transbaikalia]. In Zemletriaseniia v SSSR v 1985 godu [Earthquakes in the USSR in 1985] (pp. 124–135). Moscow, Russia: Nauka Publ. (In Russ.).

4. Gileva, N.A., & Kobeleva, E.A. (2021). [Seismic stations of the Muyakan temporary local network in 2015]. Zemletriaseniia Severnoi Evrazii [Earthquakes in Northern Eurasia], 24(2015). Electronic supplement. Retrieved from http://www.ceme.gsras.ru/zse/app-24.html (In Russ.).

5. Gileva, N.A., Khritova, M.A., & Khamidulina, O.A. (2018). [Results of localization of earthquakes of the Muyakan sequence in 2014–2015]. In Materialy XIII Mezhdunarodnoi seismologicheskoi shkoly "Sovremennye metody obrabotki i interpretatsii seismologicheskikh dannykh" [Proceedings of the XIII International Seismological Workshop "Modern Methods of Processing and Interpretation of Seismological Data"], (pp. 86–90). Obninsk, Russia: GS RAS. (In Russ.).

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