地震地质 ›› 2001, Vol. 23 ›› Issue (2): 217-221.

• 大地电磁法研究与应用 • 上一篇    下一篇

由实测资料看天然电磁场的平面波特性

陈木森, 王友胜, 叶柏元   

  1. 江汉石油管理局地球物理勘探处, 湖北潜江433100
  • 收稿日期:2001-01-31 修回日期:2001-02-28 出版日期:2001-06-05 发布日期:2009-10-26

THE INVESTIGATION ON PLANE WAVE CHARACTERISTICS OF GEOMAGNETIC FIELD BY OBSERVED MT DATA

Chen Musen, Wang Yousheng, Ye Baiyuan   

  1. Geophysical Exploration Department of Jianghan Oil Bureau, Hubei 433100
  • Received:2001-01-31 Revised:2001-02-28 Online:2001-06-05 Published:2009-10-26

摘要: 在大地电磁测深资料处理中发现,同时观测的多个测点的磁道信号在一定距离范围内互换,电磁测深曲线形态变化微小。通过实际资料处理结果研究了天然电磁场平面波的某些量化特性,其结果显示,在一定范围内的天然磁场信号满足平面波的特性。该研究结果为大地电磁测深勘探中合理布设磁场探测器,提供了实际依据。

关键词: 大地电磁测深, 平面波, 远参考

Abstract: The remote reference MT technigue was used in the MT measurement experiment. The electric fields were recorded at site 113-214 and the magnetic fields were recorded at 4 sites including site 113-214. The apparent resistivity and impedance phase curves have been obtaind for sites 113-214 by using electric fields at this site and magnetic fields at all 4 sites, respectively. The agreement is reached among 4 groups of apparent resistivity and phase curves. The experiment indicates that the hypothesis on plan wave of electromagnetic source can be satisfied.

Key words: Magnetotelluric sounding, Plan wave, Remote reference MT method