Synchronization episodes in annual numbers of earthquakes in the Mongolian-Baikal Region

• Published in: Doklady earth sciences Vol. 431; no. 1; pp. 339 - 344
• Main Authors: Klyuchevskii, A. V., Bayar, G., Bum-ochir, S.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01.03.2010; Springer; Springer Nature B.V
• Subjects: Analysis; Correlation analysis; Earth and Environmental Science; Earth Sciences; Earthquakes; Geology; Geophysics; Lithosphere; Seismology; Statistics; Mongolia; Baikal Region; Mongolia; correlation; lithosphere; synchronization; earthquakes; seismic process
• ISSN: 1028-334X; 1531-8354
• DOI: 10.1134/S1028334X10030165

Correlation analysis of annual numbers of earthquakes for Baikal Region and Mongolia allowed us to discover episodes of synchronized change in velocity of the seismic current in the territory of seven territories and twelve sections of the Mongolian-Baikal Region (MBR), substantially distant from each other. The three episodes of short-term synchronization in seismic process in the MBR were detected, namely, in the late 1960s, in the early 1980s, and in the mid 1990s. The episode of the early 1980s was observed in all the territories, while the episode of the late 1960s was expressed more weakly in Mongolia and distinguished mostly with an implementation length of three years. The episode of the mid 1990s requires further study with the use of parameters for seismic sources. The observed synchronization for annual numbers of earthquakes is evidence for the fact that activation of seismic process takes place almost simultaneously throughout the huge territory of the MBR during stress reconstruction in the lithosphere of the Baikal Rift Zone (BRZ); this activation forms a short-term coherent change in the velocity of quakes current for the spatial-temporal distribution of seismicity, which shows the seismogenic relation between Baikal Region and Mongolia.