ON SOME STRONG EARTHQUAKES IN CENTRAL ASIA IN SECOND HALF
OF
XIX CENTURY
N.G. Mokrushina, R.N. Vakarchuk, R.E. Tatevossian
Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia
Corresponding author: N.G. Mokrushina, e-mail: nina305@inbox.ru
Abstract. Materials on felt earthquakes in Samarkand and Fergana regions (Uzbekistan Republic) in the period 1868 – 1892 are presented based on original sources of information not used before. Epicenter location and magnitude for earthquakes April 7, 1869, and March 2, 1892, are evaluated for the first time, for other two earthquakes (April 3, 1868 and September 18, 1892) the uncertainty of previously published solutions is significantly reduced. Reduction of uncertainties of former solutions is achieved thanks to formalized method of epicenter and magnitude assessment which copes successfully with sparse datasets. One of the restrictions on the whole set of solutions is the association of the epicenter to certain active tectonic structures. This criterion is used only for selection of the preferable solution out of whole set of solutions, which is obtained solely based on macroseismic data. The complete set of solutions is conserved and can be used for the analysis of accuracy and objectivity of the preferable solution.
Keywords: historical earthquakes, macroseismology, macroseismic field equation.
About the authors
MOKRUSHINA Nina Georgievna – Schmidt Institute of Physics of the Earth, Russian Academy of Sciences. Russia, 123242, Moscow, Bolshaya Gruzinskaya st., 10-1. E-mail: nina305@inbox.ru
VAKARCHUK Roman Nikolaevich – Schmidt Institute of Physics of the Earth, Russian Academy of Sciences. Russia, 123242, Moscow, Bolshaya Gruzinskaya st., 10-1. E-mail: roman@ifz.ru
TATEVOSSIAN Ruben Eduardovich – Schmidt Institute of Physics of the Earth, Russian Academy of Sciences. Russia, 123242, Moscow, Bolshaya Gruzinskaya st., 10-1. E-mail: ruben@ifz.ru
Cite this article as: Mokrushina N.G., Vakarchuk R.N., Tatevossian R.E. On some strong earthquakes in Central Asia in second half of XIX century, Voprosy Inzhenernoi Seismologii (Problems of Engineering Seismology). 2020. V. 47, No. 2. P. 45–63 [in Russian]. https://doi.org/10.21455/VIS2020.2-3
English translation of the article will be published in Seismic Instruments, ISSN: 0747-9239 (Print) 1934-7871 (Online), https://link.springer.com/journal/11990