The August 2, 2007, Nevelsk earthquake: Instrumental data analysis |
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| Authors: | Ch U Kim V I Mikhailov R S Sen Ye P Semenova |
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| Institution: | 1. Institute of Marine Geology and Geophysics, Far East Division, Russian Academy of Sciences, Yuzhno-Sakhalinsk, Russia
2. Sakhalin Department, Geophysical Service, Russian Academy of Sciences, Yuzhno-Sakhalinsk, Russia
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| Abstract: | A catalogue of aftershocks of the 2007 Nevelsk earthquake (M
w = 6.2) was prepared on the basis of the data from the local network of digital seismic stations established on the southern
part of Sakhalin Island. The parameters of the aftershock hypocenters were determined using the method of the seismic wave
travel time inversion. The errors in the determination of the coordinates of the seismic events were analyzed. The particularities
of the spatiotemporal distribution of the aftershocks in the source zone of the earthquake were established. It was shown
that a strong aftershock was a subsource earthquake with its own source zone. This explains the disagreement between the energetic
characteristics and the size of the aftershock zone of the Nevelsk earthquake. |
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