The Zagan earthquake of February 1, 2011, in the low-seismoactive zone of western Transbaikalia: Observations and analysis
- Authors: Melnikova V.I.1, Seredkina A.I.1, Radziminovich Y.B.1, Melnikov A.I.1, Gilyova N.A.2, Tubanov T.A.3
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Affiliations:
- Institute of the Earth’s Crust
- Baikalian Branch of the Geophysical Survey
- Institute of Geology
- Issue: Vol 52, No 4 (2016)
- Pages: 290-300
- Section: Article
- URL: https://journals.rcsi.science/0747-9239/article/view/177347
- DOI: https://doi.org/10.3103/S0747923916040058
- ID: 177347
Cite item
Abstract
We described the February 1, 2011 (Mw = 4.7) Zagan earthquake occurred in the area of the Zagan range. This event is one of the most significant in western Transbaikalia. Macroseismic effects of this seismic event were felt over a wide territory: the intensity of II was observed at the distance of more than 300 km. Earthquake focal parameters (hypocentral depth, seismic moment, moment magnitude and focal mechanism) calculated from the data on surface wave amplitude spectra correspond to the structural position of the origin connected with a zone of plastic flow (slip) bordering the northwest slope of the Zagan range (similar complex of the metamorphic core). The results obtained prove the existence of the continental extension processes in this area.
Keywords
About the authors
V. I. Melnikova
Institute of the Earth’s Crust
Author for correspondence.
Email: vimel@crust.irk.ru
Russian Federation, ul. Lermontova 128, Irkutsk, 664033
A. I. Seredkina
Institute of the Earth’s Crust
Email: vimel@crust.irk.ru
Russian Federation, ul. Lermontova 128, Irkutsk, 664033
Ya. B. Radziminovich
Institute of the Earth’s Crust
Email: vimel@crust.irk.ru
Russian Federation, ul. Lermontova 128, Irkutsk, 664033
A. I. Melnikov
Institute of the Earth’s Crust
Email: vimel@crust.irk.ru
Russian Federation, ul. Lermontova 128, Irkutsk, 664033
N. A. Gilyova
Baikalian Branch of the Geophysical Survey
Email: vimel@crust.irk.ru
Russian Federation, ul. Lermontova 128, Irkutsk, 664033
Ts. A. Tubanov
Institute of Geology
Email: vimel@crust.irk.ru
Russian Federation, ul. Sakh’yanovoi 6a, Ulan-Ude, Republic of Buryatia, 670047