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1 .SURVEYOFGLOBALSEISMICITYIN 2 0 0 3In 2 0 0 3,atotalof2 0strongearthquakeswithMS7 0occurredintheworldasdeterminedbytheChineseSeismicStationNetwork (Table 1 ) .ThestrongestonewastheHokkaidoearthquakewithMS=8 0onSeptember 2 6 (Fig .1 ) .Whencomparedwith 2
1. SURVEY OF GLOBAL SEISMICITY IN 2 0 0 3 In 2 0 0 3, at total of 0 0 0 Strongearthquakes with MS 7 0occurredintheworldasdeterminedbytheChineseSeismicStationNetwork (Table 1) .ThestrongestonewastheokkaidoearthquakewithMS = 8OonSeptember 2 6 (Fig. 1) .Whencomparedwith 2