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全球地震活动概况据我国地震台网测定，１９９８年全球共发生７级以上地震１７次，最大为１１月２９日印尼苏拉威西岛东北７８级地震，其次为３月２５日南太平洋７７级和５月４日琉球群岛７７级地震（图１）。图１１９９８年全球Ｍｓ≥７０地震震中分布１９９８年...
According to China’s seismological network survey, a total of 17 earthquakes of magnitude 7 occurred in 1998 in the world with a maximum of 7.8 on the northeast of Sulawesi Island on November 29, followed by March 25 in the southern Pacific Ocean July 7th and May 7 Ryukyu 7.70 earthquake (Figure 1). Figure 11998 global Ms ≥ 7.0 epicentral distribution in 1998 ...