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一、引言自1967年在首都圈(N38°～41°、E113°～120°)建立跨断层测量点(台)监测断层的现今活动以来,对本区所发生的唐山7.8级地震和大同阳高6.1级地震以及部分 M_s>4.5级地震均显示出较好的地震前兆异常活动,显然,在断层活动与地震活动之间有着密切相关的、内在的、机制上的联系.从构造地质学的角度来研究断层活动与强震的关系,可以认为强震只是断层活动的瞬
I. INTRODUCTION Since the present activity of monitoring the fault at the cross-fault point (station) in the capital circle (N38 ° ~ 41 °, E113 ° ~ 120 °) in 1967, the Tangshan 7.8-magnitude earthquake and the Datong Yanggao The 6.1 magnitude earthquake and some M_s> 4.5 earthquakes all showed good earthquake precursory anomalies. Obviously, there is a closely related, intrinsic and mechanistic connection between fault activity and seismic activity. From the point of tectonic geology To study the relationship between fault activity and strong earthquakes, we can conclude that strong earthquakes are only the instantaneous faults