Deep analysis and research on abnormal tracking of precursory data in Anhui Province

Through combing the 6 kinds of data anomalies such as observation system, human interference in Anhui Province during 2014—2017, a background value database is formed so that the changing characteristics of events can be deeply analyzed. The following conclusions are obtained from the comprehensive study: ① Temporal changes show that all kinds of abnormal events in Anhui Province are increasing year by year; ② Disciplinary characteristics show that geoelectricity, geomagnetism, deformation and fluid observation anomalies are dominated by certain events, having certain disciplinary characteristics; ③ Space distribution shows that all kinds of abnormal events are distributed randomly and no obvious regional characteristics are founded; ④ All kinds of events are characterized by influencing factors and changing forms, and used as an important criterion for tracking analysis in Anhui Province. These results provide not only a scientific basis for the determination of precursory anomalies and trend prediction in Anhui Province, but also a guidance for the operation and maintenance of Anhui precursory instruments.