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1987年全球发生Ms 7.0级地震14次,比本世纪以来的平均水平(18次年)低.地震频次高于去年,但能量释放总和低于去年.14次地震主要分布在环太平洋地震带上.最大地震是12月1日在阿拉斯加湾发生的8.1级地震.1987年在我国发生Ms 5.0级地震29次,高于本世纪以来的平均水平(14次年).在29次地震中,大陆占19次,台湾占10次,最大地震是1月24日在新疆乌什发生的6.4级地震.在西北地区发生15次中强地震,占大陆中强地震的79%,这表明西北地区地震活动
The 1987 Ms 7.0 earthquakes worldwide occurred 14 times lower than the average of this century (18 years), the frequency of earthquakes was higher than that of last year, but the total energy release was lower than that of last year, and the earthquakes were mainly distributed on the Pacific Rim. . The largest earthquake was the M 8.1 earthquake in the Gulf of Alaska on December 1. There were 29 MS 5.0 earthquakes in China in 1987, which was higher than the average of this century (14 years). In the 29 earthquakes, Accounting for 19 times, Taiwan 10 times, the largest earthquake was Wushu 6.4 magnitude earthquake on January 24. 15 moderate-strong earthquakes occurred in the northwestern region, accounting for 79% of the mainland moderate-strong earthquakes, indicating that the earthquake in the northwestern region activity