Geophysical research: article

S. Baranov1
P. Shebalin2
1 Kola Branch of Federal Research Center Unified Geophysical Survey, RAS 2 Institute of Earthquake Prediction Theory and Mathematical Geophysics, RAS
Journal: Geophysical research
Tome: 19
Number: 2
Year: 2018
Pages: 34-56
UDK: 550.343.6
DOI: 10.21455/gr2018.2-2
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Keywords: mainshock, aftershocks, scaling relation, fault plane solution, aftershock area
Аnnotation: The paper considers the task of quick estimating an area where aftershocks are expected after a strong earthquake using information about its mainshock. The suggested approach is based on the hypotheses by Y. Kagan that geometrical parameters of earthquake focal zones are self-similar. This hypothesis allows one to extend scaling relation connecting an earthquake magnitude and its fault size to the aftershock area size. The research data are ANSS Comprehensive Catalog (ComCat) provided by USGS and GCMT catalog that contains seismic moment tensors and fault plane solutions of earthquakes. We used data for 1975-2016 covering the whole Earth. It is shown that scaling relation R µ10