辽宁省海城M4.4地震地磁异常ΔF的观测与分析  

The Observation and Analysis of the Magnetic Anomaly ΔF of Haicheng M4.4 Earthquake in Liaoning Province

作　　者：刘永强[1] 李伟[1] 李东春[1] LIU Yong-qiang;LI Wei;LI Dong-chun(Liaoning Earthquake Agency,Liaoning Shenyang 110034,China)

机构地区：[1]辽宁省地震局,辽宁沈阳110034

出　　处：《防灾减灾学报》2018年第2期9-14,共6页Journal of Disaster Prevention And Reduction

摘　　要：利用2017年度辽宁省流动地磁测区40个地磁观测点所得的流动地磁总场数据,结合2017年12月19日辽宁海城M4.4地震发生前后流动地磁监测结果,分析地磁场出现的邻期差值局部异常特征,在研究地磁时序变化和地磁前兆异常后,认定该区域地磁场总强度的异常是海城M4.4地震的前兆异常,得到了该地震与地磁场异常活动的关联。Based on the total field strength data observed in 40 geomagnetic observation points in the mobile geomagnetic area in Liaoning Province in 2017,and combined with the geomagnetic monitoring results before and after Haicheng M4.4 earthquake on December 19,2017,the local abnormal feature of the adjacent difference value of the geomagnetic field was represented.According to the research on the geomagnetic time series changes and the geomagnetic precursor anomalies,the anomalies of the total intensity of geomagnetic field was caused by Haicheng M4.4 Earthquake,by which the relevance between earthquake and the abnormal activities of the geomagnetic field was concluded.

关 键 词：地震 流动地磁测量 地磁场总强度 

分 类 号：P315.72[天文地球—地震学]