参考道方法在大地电磁测深数据中的应用研究

Application of Reference Technique in Magnetotelluric Sounding Data

通过选取不同的参考距离、不同质量的大地电磁实测数据作为互参考点,研究在分别采用本地电参考,本地磁参考,互参考电场,互参考磁场处理后的大地电磁测深数据的卡尼亚电阻率曲线及相位曲线,及分析了参考道方法在大地电磁测深数据处理中的应用效果。结果表明,采用互参考方法优于采用本地参考方法,且采用磁场作为参考信号要明显好于采用电场作为参考信号,所以多用磁场作为参考信号,也表明了互参考方法是有效的,可行的。

Through selected the magnetic field data of the different reference distance and different quality as a mutual reference point,study on the Cagniard resistivity curve and phase curve of used the local electric field reference,local magnetic field reference,mutual reference electric field,mutual reference magnetic field treatment and the application effect of the reference method in magnetotelluric data processing is analyzed. The results show that the mutual reference method is better than the local reference method,and the use of the magnetic field as a reference signal to be better than that of used electric field as the reference signal. So the magnetic field is used as the reference signal. The results also show that the mutual reference method is effective and feasible.