前言龙镇5.4级地震的发生,打破了黑龙江省近几十年来很少出现中等强度地震的状况。虽然在震中区周围前兆观测台很少,但是,地震前后出现了较多的宏观异常现象,这些异常现象出现的时间与地震发生时刻相呼应,宏观现象出露点与活动性断裂构造展布基本 Preface The occurrence of the 5.4-magnitude earthquake in Longzhen broke the situation that moderate-intensity earthquakes rarely occurred in Heilongjiang Province in recent decades. Although there are few precursory observational stations around the epicenter area, there are many macro-anomalies before and after the earthquake. The occurrence time of these anomalies corresponds to the time of the earthquake. The demarcation of macroscopic phenomena and the distribution of active faults