电磁测深中水平电偶源漏电对观测数据的影响

来源期刊：中南大学学报(自然科学版)1996年第4期

论文作者：毛先进 鲍光淑

文章页码：379 - 382

关键词：频率域电磁测深; 电偶源; 漏电影响; 观测数据

Key words：frequency electromagnetic sounding; electric dipoles; influence of current leakage; measured values

摘    要：研究了频率域电磁测深中水平电偶源漏电对观测数据的影响.分析和计算结果表明,从理论上看,这种影响不会使卡尼亚电阻车发生畸变,但使电、磁场值明显减小,一方面降低了信嗓比,另一方面使得电场和磁场分量各自定义的视电阻率明显降低.此外,作者还提出了避免这种影响的措施.

Abstract: The influence of current leakage from horizontal electric dipole on frequency electromagnetic sounding data was studied in this paper. Analysis and computation results showed that such a influence did not theoretically make Cagniard resistivity distorted, but the amplitudes of electric and magnetic fields were decreased clearly. So the signal to noise ration was also decreased,and the apparent resistivities definded by electrical and magnetic fields respectively were also decreased clearly. Some means to avoid this kind of influence was presented in this paper.