摘要
3D inversion of borehole-surface electrical data for complex geo-electrical models is still a challenging problem in geophysical exploration. We have developed a program for 3D inversion to borehole-surface electrical data based on the quasi-analytical approximation （QA） and re-weighted regularized conjugate gradient method （RRCG） algorithms using Visual Fortran 6.5. Application of the QA approximation to forward modeling and Frechet derivative computations speeds up the calculation dramatically. The trial calculation for synthetic data of theoretical model showed that the program is fast and highly precise.
地上凿穿表面的 3D 倒置为复杂 geo 电的模型的电的数据仍然是在地球物理的探索的一个挑战性的问题。我们为 3D 倒置开发了一个节目到地上凿穿表面电的数据基于伪分析的近似(质量保证) 并且 re 加权调整结合坡度方法(RRCG ) 用视觉 Fortran 6.5 的算法。到向前当模特儿和 Frechet 衍生物计算的 QA 近似的申请戏剧性地加快计算。为理论模型的合成数据的试用计算证明程序快、高度精确。
