Temporal and power parameters of aftershock process of the Kuriles-Kamchatka earthquakes

Category: 14-4
A.I. Lutikov, S.N. Rodina


UDC 550.34.013.2


A.I. Lutikov, S.N. Rodina


Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia



Aftershock sequences of 32 strong and moderate Kurile-Kamchatka earthquakes of magnitude range in 5.3 £ MW £ 8.3 were analysed. The suggested criteria for selecting the moment of sequence termination were used to calculate their parameters, used further to build regressive dependencies. A close correlation was found  between the moment magnitude of the main event and decimal logarithms of two characteristics - the total scalar seismic moment release during aftershock process and its duration.

It is shown that in theoretical terms, the total scalar seismic moment of aftershocks is determined by the moment magnitude and the scalar seismic moment of the strongest aftershock as well as the parameters of the recurrence plot built throughout the aftershock sequence.

Keywords: earthquakes, aftershock sequence, total scalar seismic moment, duration of aftershock sequence, Kurile-Kamchatka region.



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