关键词: 地下水异常, 模糊识别, 地震预报

Abstract: We have studied the groundwater level anomaly before the Datong-Yanggao earthquake by using the fuzzy mathematical method. Our results show that the subordinate function method can be used to identify the anomaly of groundwater level changes. Before the earthquake,in certain area and at different time scales,the group anomaly of groundwater level had a pattern of increasing and accelerating changes. This information can be used to predict the occurrence time of earthquakes. If the distribution of water level anomaly and distribution of the water wells which have anomaly look like two zones,the intersection area of the both zones may be the site of future major earthquakes.

Key words: Groundwater level anomaly, Fuzzy identification, Earthquake prediction