河北省曹妃甸地震台2024年3月数字电扰动异常分析  

Analysis of digital electrical disturbance anomaly at Caofeidian Seismic Station,Hebei in March 2024

作　　者：张志相 贾立峰[2] 赵建明 孟令焕 ZHANG Zhixiang;JIA Lifeng;ZHAO Jianming;MENG Linghuan(Tangshan Earthquake Monitoring Center Station,Hebei Province 063021,China;Hebei Earthquake Agency,Shijiazhuang 050021,China)

机构地区：[1]唐山地震监测中心站,河北063021 [2]河北省地震局,石家庄050021

出　　处：《地震地磁观测与研究》2025年第1期102-108,共7页Seismological and Geomagnetic Observation and Research

基　　金：河北省地震局科技星火计划(项目编号:DZ20230315004)。

摘　　要：自2024年3月3日以来,曹妃甸地震台CNEM08-Ⅱ型电扰动仪NS、EW向测道均出现背景值增大的高值脉冲变化现象,且每日异常时段基本一致。通过观测系统检测和环境调研,排查各种干扰因素。为明确干扰源,采用现场实验和比对观测等手段进行分析,结果认为,此次异常由台站综合楼加固施工过程中打桩机电机供电干扰所致,非地震地球物理异常。Since March 3,2024,the NS and EW channels of the CNEM08-II type electrical disturbance instrument at Caofeidian Seismic Station have shown high-value pulse changes with increased background values,and the anomaly periods are consistent each day.Through the detection of the observation system and environmental investigation,various interference factors were ruled out.To identify the source of interference,on-site experiments and comparative observations were conducted for analysis.The results suggest that this anomaly was caused by the power supply interference from the pile driver motor during the reinforcement construction of the station's comprehensive building,and it is not an earthquake geophysical anomaly.

关 键 词：电扰动 曹妃甸地震台 异常分析 

分 类 号：P315.7[天文地球—地震学]