电磁卫星地面对比观测原型系统地电场观测资料特征分析

Characteristics of Geoelectric Field Data from a Ground-based Comparative Observation System of Electromagnetic Satellites

摘要:

通过对电磁监测试验卫星地面对比观测原型系统中古丰、寺滩和坪城地电场观测数据特征研究，结果表明：（1）3个台站的地电场观测数据均具有较为明显的正常日变化形态；（2）在磁暴发生期间，地电场各测向均记录到了同步的地电暴变化，其最大变幅均明显高于正常日变；（3）寺滩地电场记录到临震前的数据异常现象，在时间和空间上都与地震事件吻合较好。

Abstract:

This paper analyzed geoelectric field observation data at Gufeng, Sitan, and Pingcheng stations from an electromagnetic, satellite ground-based, comparative observation system. Results showed that:(1) The normal diurnal variation was clear from geoelectric field data at the three stations. (2) During the occurrence of a geomagnetic storm, geoelectric storm changes were recorded in all directions of the geoelectric field, and the maximum variation amplitude of the geoelectric field was significantly larger than that of the normal diurnal variation. (3) Impending anomalies before the earthquakes, recorded by the geoelectric field at Sitan station, agreed well with earthquake occurrence in time and space.