Problems of Engineering Seismology: article

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
Journal: Problems of Engineering Seismology
Tome: 47
Number: 2
Year: 2020
Pages: 45-63
UDK: 550.34
DOI: 10.21455/VIS2020.2-3
Аnnotation file
Bibliographic list
Keywords: historical earthquakes, macroseismology, macroseismic field equation
Аnnotation: 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.