苏22井水温映震效能及典型地震前兆特征分析

摘要

分析苏22井2008年观测以来11次水温数据下降变化异常，排除仪器故障、人为干扰及降雨等因素。与地震活动的对比分析发现，苏22井水温具有较好的映震效能，变化幅度≥0．005℃的水温异常与井孔周围300 km 范围内 ML 4．0以上地震有较好的对应关系。%In this paper,we analyzed the water temperature data of Su No.22 well since 2008 and found that there are eleven anomalies during the observation of water temperature.Through analyzing,we eliminated interference factors of instrument failure,human disturbance and rainfall etc.Comparing with earthquake activity,we can see that the water temperature of Su No.22 well has good earthquake reflection ability.The water temperature anomalies which are with the drop amplitude more than 0.005℃ have a good relationship (with the rate of 4/7)with earthquakes which have a magnitude bigger than ML 4.0 and occurred in the range of 300 km around.