地电场观测中雷电干扰变化特征分析

Change Feature Analysis of Lightening Disturbance in Observation of Geoelectric Field

利用昌黎地震台2002年以来的地电场资料,对观测中常见的雷电干扰问题进行了变化形态特征分析。结果表明:雷电或雷雨在地电场观测中的干扰是无规则变化,多数为高频地上下突跳,且变化幅度视雷电距离不同而各异,6个测道虽能同时记录干扰,但形态或变幅并不相同,通过长短极距幅值比计算结果,此特征显而易见。

Using the geoelectric field data of Changli seismostation since 2002, the article makes change form feature analysis of common lightening disturbance in observation. The result shows that the lightening disturbance in observation of geoelectric field is random, sudden jump up and down with mostly high-frequency and range varies depending on the distance of thunder and lightning, 6 test roads can also record noise, shape or amplitude varies by length configuration and amplitude calculation results, this characteristic is obvious.