摘要
介绍和分析了昌黎台地电场观测中常出现的一些干扰和典型变化形态以及分析排查过程,认为主要存在5种干扰变化:(1)雷电、降雨影响;(2)线路接触不良;(3)直流干扰;(4)电极极化;(5)观测系统(主机)故障。各种干扰源不同其变化形态也不同,可以从变化形态和变幅方面进行判断。
This article describes and analyzes the interference to geoelectric field and their typical variation characteristic in Changli seismic station, as well as analysis process. The result shows that there are main ly five types of interference： （1） thunder and rainfall, （2） bad contact of line, （3） DC interference, （4） polarized electrode, （5） fault of observation system. The variation characteristics of the five types of interference are different and depend on their own source. Therefore, we can judge them according to their var iation characteristics.
出处
《华北地震科学》
2011年第4期38-43,48,共7页
North China Earthquake Sciences
基金
2010年河北省地震局重点项目(201020)
关键词
昌黎台
地电场
干扰类型
变化特征
ChangI.i seismic station
geoelectric field
interference type
variation characteristics
