江苏-南黄海地区断裂带附近的小震活动与主震的关系

Relation between small and main earthquake activities near fault zones in Jiangsu and South Yellow Sea area

通过对 1 970年以来 ,江苏南黄海地区的 9次ML>5 4中强地震发生前的中小震活动分析 ,发现该地区ML>5 4中强地震 (本文称为主震 )发生前 2～ 3年内均有一系列ML3 0左右中小地震发生 ,而且这些中小地震的空间分布与主震在同一断裂带上。根据断裂带上的中小震活动情况 ,运用地震活动性的有关分析方法 ,对未来地震进行外推 ,并进行检验。得出 ,可以将断裂带附近发生的一些ML3 0左右的小震 。

Through analysis for small earthquake activity before nine moderate earthquakes of M L>5 4 occurred in Jiangsu and South Yellow Sea region since 1970, it is discovered that a series small earthquake of some M L 3 0 occurred in 2～3 years before the moderate earthquakes of M L>5 4(main earthquakes),and small earthquakes and its main earthquake all occurred in a same rupture belt The main earthquake in the future can be predicted using the small earthquake activity in the rupture belt