西安鄠邑台低频电扰动异常初步分析  

A preliminary analysis of the low-frequency electric field perturbations at Huyi Seismic Station,Xi’an

作　　者：唐好丛 朱林 任慧琼 TANG Haocong;ZHU Lin;REN Huiqiong(Xi’an Earthquake Monitoring Center,Shaanxi Province 710018,China)

机构地区：[1]西安市地震监测中心,中国陕西710018

出　　处：《地震地磁观测与研究》2021年第6期105-111,共7页Seismological and Geomagnetic Observation and Research

摘　　要：描述了西安市鄠邑地球物理观测台TDW-26型低频电扰动观测仪器的原理及台站环境。通过现场调查、灌水试验和观测资料对比,分析鄠邑台低频电扰动NS向测值突跳异常产生原因,认为该台低频电扰动NS向异常与降雨存在一定相关关系,雨水渗入破损线缆套管是造成测值突跳的主要原因,经现场对线缆套管维护处理,突跳异常基本消除。This paper describes the observation principle of the TDW-26 electromagnetic sensor and environment at the Huyi Seismic Station.The causes of abnormal spikes on the NS component observations of the low-frequency electric field are analyzed by carrying out a field investigation,experimental,and data analysis.It is believed that there is a certain correlation between the anomalies and rainfall.Rainwater seeping into damaged cable casing is the main cause of observed abnormal spikes.After the field cable casing maintenance,the abnormal observations disappear.

关 键 词：低频电扰动 异常分析 降雨 灌水试验 

分 类 号：P315.722[天文地球—地震学]