彰武地震前出现了一批地下水动态异常,其中包括震中区地下水升降、变色、变味、翻花冒泡等宏观地下水动态异常,也包括深井网出现的微动态异常,它们在临震前变化明显。异常井孔在空间上与近期发生的地震、震群邻近,在时间上与地震活动、其他前兆异常基本同步,显示出一幕整体活动图象,为统一应力场作用的结果。 A series of groundwater dynamic anomalies occurred before the Zhangwu earthquake, including macroscopic groundwater dynamic anomalies such as groundwater rise and fall, discoloration, smelling and overturning bubbles in the epicenter area, as well as micro-dynamic anomalies appearing in the deep well pattern. The changes were obvious before the earthquake . The abnormal borehole is spatially adjacent to the recent earthquake and earthquake swarm, and is basically synchronous in time with the seismic activity and other precursory anomalies. It shows the whole moving image as a result of the unified stress field.