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文章利用美国《震中初定月报》和《中国地震台临时报告》,分别计算了1973年以来每年全球和中国的地震活动性指数,结果显示1976年是高峰年,以后地震活动逐年持续下降。
Based on the U.S. Monthly Earthquake Preliminary Report and the Chinese Seismological Bureau Interim Report, the paper separately calculated the annual global and China seismicity indices since 1973. The results show that 1976 was the peak year, and the seismic activity continued to decline year after year.