摘要
本文通过对云南西部7个水汞观测站,1990年—1996年9月省内及邻区26次M≥50级地震的水汞资料进行异常时空强及其异常形态的分析研究,总结出云南水汞在远震和近震前的前兆异常特征,用这些前兆异常特征对1996年9月后1年内各观测站的水汞异常与所发生的地震进行检验,结果很好。此项研究,有助于对未来发震地区的判定。
Through analyzing the time apace distribution,strength and shape of the mercury anomaly in groundwater at the seven observation stations in west Yunnan for the 26 earthquakes with M≥5 0 occurred in Yunnan and its neibouring areas from 1990 to September,1996,the precursor characteristics of the mercury anomaly in groundwater before the far and near shocks in Yunnan are summed up.Check for relation between the mercury anomalies at the observation stations and the earthquakes within one year after September,1996 is made and good results are obtained.The results might be useful to judge future seismogenic areas.