电偶源频率电磁测深二维层状模型参数化反演

THE PARAMETRIC INVERSION OF TWO DIMENSIONAL LAYER MODEL IN FREQUENCY ELECTROMAGNETIC SOUNDING WITH ELECTRICAL DIPOLE SOURCE

本文在大地电磁测深松弛（ｒａｐｉｄ）反演理论方法的基础上，探讨了电偶源频率电磁测深（赤道装置）阻抗视电阻率的二维反演问题。由二维层状模型反演目标函数的近似简化出发。将全剖面的二维反演约化为沿剖面各测点的逐一测点一维反演，从而构制了一个简易可行的二维层状模型参数化反演方案。反演试验表明。

On the basis of the theory and method of rapid inversion in MTS, the two dimensional inverse problem of impedane apparent resistivity in frequency EM sounding with electrical dipole source (equatorial equipment) was studied. From the approximate reduction to the inverse objective function of two dimensional layer model, the two dimensional inversion along the total profile was reduced to the one dimensional inversion of each site along the profile, and a simple easy scheme of the parametric inversion for two dimensional layer model was made. The inverse tests show that the two dimensional inverse method is practicable and effective.