物探与化探2024，Vol.48Issue(2)：451-460,10.DOI:10.11720/wtyht.2024.1150
基于PARDISO直接求解器的三维自然电位正反演
3D forward and inverse modeling of self-potential data based on the PARDISO direct solver
摘要
Abstract
In recent years,the self-potential method has played a significant role in the exploration and evaluation of seafloor massive sulfide resources.This study explored the 3D forward and inverse modeling algorithms for self-potential based on the PARDISO direct solver.First,the finite volume method was employed to discretize the self-potential control equation,and the PARDISO direct solver was utilized to improve the forward modeling efficiency.The reliability of the forward modeling algorithm was verified by comparing the numerical solution with the analytical solution.The 3D inverse modeling algorithm considered the topographic factor and incorporated the minimum support constraint and depth weighting into the objective function.The inversion results of theoretical model data effec-tively reconstructed the ore body structure.Finally,the self-potential data obtained from indoor sandbox experiments were inverted u-sing the inverse modeling algorithm,obtaining that the current density anomaly was roughly consistent with the position of the metal bar.Therefore,the inverse modeling algorithm proposed in this study holds critical significance for subsequent inversion of large-scale spontaneous potential data.关键词
自然电位法/3D聚焦反演/PARDISO直接求解器Key words
self-potential method/3D focusing inversion/PARDISO direct solver分类
天文与地球科学引用本文复制引用
苏朝阳,沈金松,罗辉..基于PARDISO直接求解器的三维自然电位正反演[J].物探与化探,2024,48(2):451-460,10.基金项目
国家自然科学基金项目(42074217) （42074217）
