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一九七七年冬,广西陆川县乌石附近发生一起小震群。这次震群活动从77年12月开始,到78年7月结束,共发生小震和微震880余次,释放的地震波总能量为1.3×10~(17)尔格。广西是少震区,地处桂东南的陆川县地震活动水平稍高一些。据史料记载,陆川周围八个县自明朝以来六百年间,共发生五级以上破坏性地震五次。陆川近年的小震活动平均每年
In the winter of 1977, a small swarm of swarms occurred near Wushi, Luchuan County, Guangxi. The earthquake swarm activity started in December 1977 and ended in July 78. A total of 880 small earthquakes and microseismic events occurred. The total seismic energy released was 1.3 × 10-17 Erg. Shaoxing is a small earthquake area in Guangxi, located in the southeastern Guangxi Luchuan earthquake activity slightly higher level. According to historical records, during the six hundred years since the Ming Dynasty in eight counties around Luchuan, a total of more than five devastating earthquakes occurred five times. In recent years, Lu Chuan small earthquake activity on average each year