一、前言观测表明,在地壳形变区域中,如果发生一次较大的地震,那么由主震所激发而与主震有关的余震便立即进行活动,余震释放能量的总和与主震释放能量的比值,取决于地震序列活动的类型、根据我国境内6.0级以上地震统计的研究,大致分为下列几种类型。1.孤立型这种类型的地震序列活动,其能量基本上通过主震一次释放;前震和余震能 Foreword Observations show that if a large earthquake occurs in the crustal deformation zone, the aftershocks triggered by the main shock and related to the main shock immediately move. The ratio of the sum of the energy released by the aftershock and the energy released by the main shock , Depending on the type of seismic sequence activity, according to China’s territory more than 6.0 earthquake statistics research, broadly divided into the following types. 1. Isolated-type seismic sequence activity of this type, whose energy is essentially released once by the main shock; foreshocks and aftershocks