地震地磁观测与研究2025，Vol.46Issue(1)：71-77,7.DOI:10.3969/j.issn.1003-3246.2025.01.010
乌加河地电场优势方位角地震前后变化特征
Analysis of the variation characteristics of the dominant azimuth angle of the geoelectric field at Wujiahe Seismic Station before and after the earthquake
摘要
Abstract
10 MS≥4.0 earthquakes(including 2 events that occurred in Mongolia)within 500 km around the Wujiahe Seismic Station from 2017 to 2023 were selected to calculate and analyze the characteristics of the dominant azimuth of the geoelectric field before and after the earthquakes based on the geoelectric field tidal wave rock mass fracture water(charge)seepage model.The results show that among the selected 10 earthquakes,the azimuth angles of 6 events changed significantly 1-2 months before the earthquake and gradually returned to normal after the earthquake,among which the azimuth angle of 5 events showed an increasing trend and 1 event showed a decreasing trend.The accumulation of these earthquake cases is of great significance for the in-depth study of the anomaly characteristics of the seismic geoelectric field and the law of seismic activity.关键词
乌加河地电场/优势方位角/地震异常/变化特征Key words
Wujiahe geoelectric field/dominant azimuth/seismic anomalies/variation characteristics引用本文复制引用
刘伟,柴宁娇,王耀临,李东,冯雪东..乌加河地电场优势方位角地震前后变化特征[J].地震地磁观测与研究,2025,46(1):71-77,7.基金项目
内蒙古自治区地震局局长基金(项目编号:2023QN27) （项目编号:2023QN27）
