【摘要】 系统研究了1985年以来江苏及邻区的36次小震群,结果表明,江苏及邻区的地震具有成丛活动的特点,每一丛地震活动持续时间和平静时间没有明显的周期性,这反映了它是在一定的外部应力环境控制下发生的。江苏及邻区地震的成丛活动与台湾地区7级以上强震有一定的呼应关系,多发生在台湾地区7级以上强震前后。分析表明,台湾地区7级以上强震孕育范围较大,明显影响和控制了江苏及邻区的震群活动,而江苏及邻区的震群活动对大范围区域应力场的增强具有指示意义,对台湾地区7级以上强震的发生也具有一定的中短期指示意义。更多还原

【Abstract】 Thirty-six earthquake swarms since 1985 in Jiangsu and neighboring areas are studied in this paper. Earthquake swarms show clustering characteristics and have a good correlation with M>7 earthquakes in Taiwan.Result shows that the genesis regions of strong earthquakes at Taiwan are all large, which influence and control the seismicity and clustering of earthquake swarms in Jiangsu and neighboring areas.The clustering of earthquake swarms has a relationship with the increasing of regional stress field, and has short-term indicative meaning in occurrence of M>7 earthquakes in Taiwan.更多还原