安徽巢湖井数字化水温资料分析

Analysis on the Digital Temperature Data of the Chaohu Well in Anhui Province

对安徽省巢湖皖14井两年多数字化水温资料异常进行了分析,采用1套同型号的仪器进行了对比观测,结果表明:该井数字化水温观测资料信息量丰富,不仅有降雨、气压的扰动,还有大震的同震效应和震后效应;对比观测期间,两套放置在不同深度的水温仪均记录到井区附近MS3.5地震前显著的短临突变异常,而同井的水位观测异常的信息量要小得多。因此,在一些处于特殊部位的井孔内布设深井水温观测仪,将有助于前兆异常的捕捉。

We analyze two years＇ data of the water temperature of No.14 Well in Chaohu City,Anhui Province,and compare the data with those recorded by another same model bathythermograph in the same well.We find that the information of digital temperature is very rich,it includes not only the disturbance of rain and atmospheric pressure,but also the coseismic effect and post-earthquake effect of the strong earthquakes.In the period of comparative observation,the two bathythermographs placed at different depths could record short-term precursory before several MS3.5 earthquakes occurred nearby.But at the same time and in the same well,the anomalous information of water level observation is few.Thus,at some special tectonic places,to emplace a number of deep wells for water-temperature observation will help to catch the seismic precursors.