江苏苏05井、苏06井水温近年来典型异常特征分析及其机理讨论

Characteristic Anomalous and Mechanism of Water Temperature of the Jiangsu No.05 well and No.06 Well before Earthquake

近10年历史震例的分析表明,江苏苏05井、苏06井水温观测资料异常与江苏及邻省中等地震有很好的对应关系。本文对2010年后两口井的观测数据进行分析,总结了苏05井、苏06井水温测项在震前的典型异常特征:(1)异常表现为打破上升趋势的下降变化;(2)震前异常持续时间为2—3个月左右,映震范围在300km左右;(3)两口井的震前异常幅度在0.003℃左右。根据总结的异常特征并结合水温与井孔结构关系、水温与水位的关系、不同层位水温观测原理以及水化分析结果等,对异常可能的成因进行了初步探讨。

By analyzing history earthquakes occurred during recently 10 years we found that the water temperature anomalous of the Jiangsu Su No.05 well and Su No.06 well have good relationship with mid-earthquakes occurred in Jiangsu and neighboring province. In this paper we analyzed the data of the two wells since 2010 and summarized the typical characteristics of the water temperature of Su No.05 well and Su No.06 well as follows：1） the anomalous shows decreasing trend, 2） the during time is among 2-3 months and the epicentrals are about 300km, 3） the anomalous amplitude is about 0.003℃. Finally we discussed the probable mechanism according to borehole structure, the relationship between water level and water temperature, the water temperature value observed in different levels and hydration analysis etc.