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1 SURVEY OF GLOBAL SEISMICITY IN 2011A total of 26 strong earthquakes with MS ≥ 7. 0 occurred in 2011 throughout the worldaccording to the China Seismic Network ( Table 1 ) . The strongest earthquake was the Japanearthquake measuring MS9. 0 on March 11 ( Fig. 1) . The frequency was slightly lower and the
1 SURVEY OF GLOBAL SEISMICITY IN 2011A total of 26 strong earthquakes with MS ≥ 7. 0 occurred in 2011 throughout the worldccording to the China Seismic Network (Table 1). The strongest earthquake was the Japanearthquake measuring MS9. 0 on March 11 (Fig. 1). The frequency was slightly lower and the