芜湖皖28井水位异常综合分析  

Integrative analysis on the water level anomaly at Wuhu No.28 well in Anhui Province

作　　者：王俊[1] 张军[1] 陶月潮[1] 孙盼盼[1] 李军辉[1] 

机构地区：[1]安徽省地震局,中国合肥230031

出　　处：《地震地磁观测与研究》2014年第5期172-178,共7页Seismological and Geomagnetic Observation and Research

基　　金：安徽省地震局科研项目(201417)

摘　　要：针对2011年芜湖皖28井水位破年变异常,系统梳理该井相关资料,利用水位变幅、相关性分析及相对变差率进行分析。结果表明,该项异常信度较高,反映区域构造活动信息,是周边几次中等强度地震的共同前兆。通过剩余曲线、从属函数等数学方法,对该井历年水位观测数据进行异常识别。研究表明,该井水位异常主要表现为短期异常特征,与该井孔西北、西南侧中等地震有较好的对应关系。For understanding the anomaly of weter level which is breaking though the annual variance at Wuhu No. 28 well in Anhui Province in 2011, the relevant information about the well is reviewed. The correlation analysis on amplitude variance of water level and relative variation ratio shows that the abnormal is higher reliability, which reflects the regional tectonic activity information, and simultaneously,is a common precursor of several moderate earthquakes in its surrounding area. Subsequently, through the mathematical method of residual curve and subordinate function, the abnormities of water level in the observation data at this well over years are recognized. Our research shows that the water level anomalies are mainly of short- term anomalies and there is a good corresponding relationship with the medium earthquakes surrounding the borehole in the northwest and southwest side.

关 键 词：皖28井水位 破年变异常 相对变差率 剩余曲线 信息提取 

分 类 号：P315.723[天文地球—地震学]