湖南湘阴井水位的一次大幅下降异常成因分析

Analysis on the cause of a large decrease of water level of Xiangyin well in Hunan

通过检查湘阴井的观测系统、排查其观测环境,包括对温度、气压、降雨量、湘江水位以及周边施工作业等的排查,并对湘阴井和湘江水的水样进行水质成分和氢氧同位素分析,认为湘阴井水位自2019年7月中旬开始出现的大幅下降异常现象是在当时湘阴县降雨量明显减少且湘江水位降低的情况下,附近工地施工引起的水位下降,不是地震前兆异常。

By checking the observation system of Xiangyin well,the observation environment,which includes temperature,pressure,rainfall,the water level of Xiangjiang river and surrounding construction operations,and analyzing hydrogen and oxygen isotope and water quality of the well water samples,we think that Xiangyin well began to appear abnormal phenomenon since 2019 in mid-July is influenced by the rainfall decreased significantly in Xiangyin and the water level of Xiangjiang river decreased,as well as the construction at a nearby site,and it is not an earthquake precursors anomaly.