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

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