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本文将Parker算法推广到物性具有三维分布的模型中,新的重磁场理论公式适用性更为普遍。此时密度和磁化强度的分布在横向任意变化、在纵向依多项式变化,磁化强度的方向可以有横向变化。文中给出了单层、多层(等厚度层、变厚度层)的正演计算公式,研究了变厚度层正演公式的加速求和措施,最后给出了数值模拟的结果。
In this paper, Parker’s algorithm is generalized to a model with three-dimensional distribution of physical properties. The applicability of new formulas of heavy-field theory is more common. In this case, the distribution of density and magnetization changes arbitrarily in the horizontal direction and changes in the longitudinal direction according to a polynomial. The direction of the magnetization can have a lateral change. In this paper, forward calculation formulas of single layer, multi-layer (equal-thickness layer and variable-thickness layer) are given, and the acceleration summation method of forward modeling of variable thickness layer is studied. Finally, numerical simulation results are given.