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1966年3月,在我国河北省邢台地区连续发生了5次M_s>6级的强地震。其中,3月22日在宁晋县东汪附近发生的地震为最大(M_s=7.3)。本文先论述了这些强地震及其较大余震的空间分布特征,然后利用已有的地震震源参数分析了本区最新构造运动的方式,推测了这些地震发生之前本区的应变图象,并根据这些分析结果讨论了强地震的迁移和互相触发关系。
In March 1966, five strong earthquakes of magnitude M_s> 6 occurred successively in Xingtai, Hebei Province, China. Among them, on March 22, the quake occurred near Dongwang in Ningjin County was the largest (M_s = 7.3). In this paper, the spatial distribution characteristics of these strong earthquakes and their large aftershocks are firstly discussed. Then the latest tectonic movements in this area are analyzed by using the existing seismic source parameters, and the strain images in this area before these earthquakes are speculated. According to The results of these analyzes discuss the strong earthquakes’ migration and mutual triggering.