Megaearthquake of March 11, 2011, in Japan: The event magnitude and the character of the aftershock sequence
The great Japanese earthquake (GJE) of March 11, 2011, was a megaevent. The conditions under which such seismic catastrophes occurred are discussed. The regime of the aftershocks of this megaevent is compared with the data on the aftershock sequences which accompanied the Simushir earthquakes (2006...
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| Veröffentlicht in: | Izvestiya. Atmospheric and oceanic physics 2011-12, Vol.47 (8), p.941-950 |
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| container_title | Izvestiya. Atmospheric and oceanic physics |
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| creator | Rodkin, M. V. Tikhonov, I. N. |
| description | The great Japanese earthquake (GJE) of March 11, 2011, was a megaevent. The conditions under which such seismic catastrophes occurred are discussed. The regime of the aftershocks of this megaevent is compared with the data on the aftershock sequences which accompanied the Simushir earthquakes (2006 and 2007) and the Andaman earthquake (2004) and with the seismicity behavior in the generalized vicinity of a strong earthquake. The aftershock sequences of the abovementioned strong earthquakes are shown to represent the sets of trend changes in the postshock activity and specific outbursts of seismic activity. Activity outbursts are characterized not only by an increase in the number and energy of events, but also by a decrease in the recurrence plot slope (
b
value) and the average earthquake depth. Some such outbursts correspond to the occurrence of strong repeated shocks. A possible mechanism for outbursts of seismic activity is proposed. The possibility of a stronger repeated shock in the vicinity of the megaearthquake of March 11, 2011, is discussed. |
| doi_str_mv | 10.1134/S000143381108007X |
| format | Article |
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b
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b
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b
value) and the average earthquake depth. Some such outbursts correspond to the occurrence of strong repeated shocks. A possible mechanism for outbursts of seismic activity is proposed. The possibility of a stronger repeated shock in the vicinity of the megaearthquake of March 11, 2011, is discussed.</abstract><cop>Dordrecht</cop><pub>SP MAIK Nauka/Interperiodica</pub><doi>10.1134/S000143381108007X</doi><tpages>10</tpages></addata></record> |
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| subjects | Climatology Disasters Earth and Environmental Science Earth Sciences Earthquakes Geophysics/Geodesy Marine Seismic activity Seismology |
| title | Megaearthquake of March 11, 2011, in Japan: The event magnitude and the character of the aftershock sequence |
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