武山22号井水氡中期异常与地震关系的探讨

Discussion on Relationship between Middle-team Anomalies of Radon in No.22 Well at Wushan Station and Earthquakes

利用从属函数法对1984-2003年武山22号井水氡资料进行分析。共提取出5次从属函数中期异常,其中4次对应了在甘肃及邻区发生的MS≥5.8地震。对异常特征及其地震的对应关系做了讨论,提出了中强、强震时间预测的指标与方法。

Using the subordinate function method, the observation date of radon in No. 22 well at Wushan station from 1984 to 2003 are analyzed. Five Middle-term anomalies on the curves of subordinate function are found, and 4 of the anomalies corresponded with earthquake （Ms≥5.8） in Gansu province and adjacent regions. With this the relationship between the anomaly and earthquake, the feature of anomaly are discussed. The method and criterion of time prediction for strong and moderate-strong earthquake are obtained from the amonaly of radon.