We have studied the groundwater level anomaly before the Datong Yanggao earthquake by using the fuzzy mathematical method.
采用模糊数学从属函数和异常系列方法，以大同-阳高地震为例，对强震发生的时间与地点预测进行研究。
Based mainly on the structural system concept, a 2-d catastrophic model of groundwater (level and geochemistry) anomaly, interference and earthquake has been established in this paper.
本文主要运用结构系统概念，建立地下水(水位、水化学)异常量、干扰量与地震之间的二维突变模型。
Our results show that the subordinate function method can be used to identify the anomaly of groundwater level changes.
结果表明：模糊数学从属函数方法是提取水位异常的较好方法。
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