多分量地震监测系统AETA在张家口地区的应用  

APPLICATION OF MULTI-COMPONENT SEISMIC MONITORING SYSTEM AETA IN ZHANGJIAKOU AREA

作　　者：宋晓煜 李智豪 刘仲韬 郭凤霞 郝丽 SONG Xiaoyu;LI Zhihao;LIU Zhongtao;GUO Fengxia;HAO Li(Zhangjiakou Earthquake Monitoring Center Station,Zhangjiakou 015400,China;Seismological Bureau of Hebei Province,Shijiazhuang 050021,China)

机构地区：[1]张家口地震监测中心站,河北张家口075400 [2]河北省地震局,河北石家庄050021

出　　处：《高原地震》2021年第4期34-38,共5页Plateau Earthquake Research

摘　　要：通过对多分量地震监测系统记录的近三年张家口地区3级以上地震震前异常信息的分析,发现多个台站记录到异常信息,可能是相应地震的前兆异常。结合近三年各测点多分量仪器观测数据分析,发现低频地声均值单个突跳、低频地声振铃计数接连突跳、低频电磁振铃计数单个突跳及接连突跳这4种异常形式并非震前异常信号,而低频地声振铃计数缓慢上升后波动性变化及低频电磁均值出现方波形态这两种异常形式属于震前异常信号,可用于地震预测。Based on the analysis of the pre-seismic anomaly information recorded by the multi-component seismic monitoring system in the past three years,it is found that the anomaly information recorded by several multi-component instruments may be the precursive anomaly of the corresponding earthquake.Combined with the analysis of the observation data onto multi-component instruments in the past three years,it is found that the four abnormal forms—single jump of low frequency grounds sound mean,continuous jump of low frequency ground sound ring count,single jump and continuous jump of low frequency electromagnetic ring count—are not abnormal signals before earthquake.The change of low frequency ground sound rings counts,which goes up slowly and then fluctuates.The square wave form of low frequency electromagnetic mean is pre-earthquake abnormal signals.They can be used for earthquake prediction.

关 键 词：多分量 AETA 地震预测 

分 类 号：P315.63[天文地球—地震学]