【摘要】 为实现瞬变电磁测深资料的精细解释,本文提出了回线源瞬变电磁拟地震剖面转换的思路。给出水平层状介质下的转换模型,并提出了转换方法及转换步骤;直接由野外实测的二次感应电压数据,经过傅氏交换,在频率域利用线性数字滤波求出地面波阻抗;再经过反傅氏变换,在时间域利用线性规划法求取瞬变电磁场反射系数序列q_m;最终以q_m为参数绘制拟地震剖面。结果表明该方法效果明显。更多还原

【Abstract】 In order to realize accurate interpretation of TEM sounding data, the idea of pseudo-seismic section transformation for TEM data produced by loop-source had been presented in the paper. The mathematical model was given in a condition of horizontal layered medium, the transform method and processing procedure have been put forward the secondary induced voltage data measured in field,after Fourier transform,was used to compute the wave-impedance by using linear numeric filtering in frequency domain;then after inverse Fourier transform,the reflection coefficient sequence qm of TEM field has been computed by linear programming in time-domain, and finally the pseudo-seismic section has been plotted by parameter qm. The results showed that the method is effective .更多还原