地震宏观异常是指地震前出现的,不用仪器设备也可观测到的非常明显的异常现象。宏观异常的种类包括:生物异常、地下水异常、地形变异常、电磁异常及气象异常等。生物异常是常见的地震宏观异常,其中大量的是动物异常。例如,1975年辽宁海城地震前出现了30多种,近900起动物异常,个体数量超过2000例。表现有蛇出洞、老鼠成群结队搬家、猪狗嚎叫不止不进食、牛马惨叫不进 The macro-anomaly of earthquakes refers to the very obvious anomaly observed before an earthquake without the use of equipment. Macro-anomalous species include: biological anomalies, groundwater anomalies, terrain anomalies, electromagnetic anomalies and meteorological anomalies. Biological anomalies are common macro-anomalies of the earthquakes, many of which are animal anomalies. For example, there were more than 30 species and nearly 900 animal anomalies before the Haicheng earthquake in Liaoning Province in 1975, with more than 2,000 individuals. The performance of a snake hole, mice move in droves, pigs and dogs howl not to eat, cattle scream not enter