地下水异常（groundwater anomaly）是指由构造应力作用引起的地下水水位升降、泉水流量变化、水质和水温变化、水中气体浓度变化，以及通过包气带逸出等地下水、气异常现象的总称
并用地下水异常、激光锁相应变仪测到的地震前兆，分析了地球自转短周期与地震的关系。
We have also analyses the relation between short cycle of earth rotation and earthquakes, according to the an…
按照这一模型进行的地下水理论前兆场正演的结果，与大地震前实际观测的地下水异常的典型图象，基本上是一致的。
According to deduction from the model, the result shows that theoretical precursory field is basically consistent with practical data of groundwater anomaly.
尽管难以在盐碱地里栽种树木，但覆盖地表和湿地的植被异常丰富，随着地下水位和PH值的细微变化而呈现不同的形态。
Though it is di? Cult to grow trees in the saline-alkali soil, the ground cover and wetland vegetation are rich and vary in response to subtle changes in the water table and PH values.
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