水平层状介质电磁法数据时频联合反演

摘要

通过一维层状介质电磁法数据的时域和频域正演结果,对不同电阻率大小的电阻层进行了反演计算,说明了在这种情况下电磁法数据时频联合反演的合理性.正演计算了一维层状模型下水平电偶极频率域水平电场响应及利用G-S变换计算时间域垂直磁场导数响应；利用最光滑模型约束反演方法建立了时频联合反演迭代公式.通过理论模型反演试算表明,该反演效果较好.%Based on the results of one-dimensional layered media forward modeling in time domain and the frequency domain of electromagnetic data, the inversion was carried out and the results indicated that the joint inversion of time-frequency was reasonable. It is carried out that forward calculation of horizontal electric field response of horizontal electric dipole in the one-dimensional layered model in frequency domain and the use of the G-S transforms calculation of the vertical magnetic field derivative of the time domain response, and that a time-frequency inversion iteration formula of smoothest model constrained inversion method is established. The theoretical model inversion result shows that the effect of inversion is good.