由实测资料看天然电磁场的平面波特性  

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

作　　者：陈木森[1] 王友胜[1] 叶柏元[1] 

机构地区：[1]江汉石油管理局地球物理勘探处,湖北潜江433100

出　　处：《地震地质》2001年第2期217-221,共5页Seismology and Geology

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。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.

关 键 词：大地电磁测深 平面波 天然电磁场 资料处理 数据采集 

分 类 号：P319.1[天文地球—固体地球物理学]