It means that earthquakes recur clusteringly in time intervals of close length. This model contains two kinds of meanings: one is that earthquake cluster quasi-periodically recurs, and the other is that earthquakes within an earthquake cluster clusteringly recur.

這種所謂準周期叢集復發(fā)是指大陸板內(nèi)地震以大致相近的時間間隔成群叢集發(fā)生日韩手机自拍无码专区，它包含有兩層含義：一是指地震叢是準周期重復發(fā)生的；二是指在某一地震叢內(nèi)，地震又是叢集復發(fā)的。