吉林地区地电场变化特征分析研究

本文在初步介绍了吉林地区地电场观测台网基本概况的基础上, 对该区域记录到的地电场的基本变化特征进行了统计分析。 研究表明: ① 绝大部分台站记录到了比较典型的地电场静日变化, 主要表现为“峰—谷—峰”形态, 该变化形态在时间上具有同步性; ② 所有台站均记录到了比较明显的地电暴同步变化, 呈近似南北分布的几个台站记录到了微弱磁扰的同步变化; ③ 地电场日变化幅度呈现比较明显的年变化规律, 不同台站的地电场日变化幅度具有一定的差异性; ④ 正常工作状态下, 各个台站之间同测向观测数据具有比较好的相关性。

Analysis of the Characteristics of Geoelctrical Field Changes in the Jilin Region

In this paper we first introduced the geoelectric field observation network in Jilin region,and then statistically analysed the basic characteristics of the observed geoelectric field changes.The results show that: ① The typical daily variations of geoelectric field are recorded at most of stations as the type of "peak-valley-peak",and the morphological changes are simultaneous in time;② The obvious simultaneous changes during the electrical storm are recored at all the stations,and the simultaneous changes during weak magnetic disturbance at several stations of approximate north-south distribution;③ It is obvious that the change range of geoelectric field follows a annual change pattern,and the variation ranges differ from each other;④ Under normal state,the results of data correlation in the same direction between stations are good.