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.
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)
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
关键词
低频电扰动
异常分析
降雨
灌水试验
low-frequency electric field disturbance
anomaly analysis
rainfall
water filling test
