基于非结构三角网格的海洋CSEM和MT二维联合反演研究

艾正敏, 叶益信, 汤文武, 陈晓, 杜家明

A test study of 2D joint inversion of marine CSEM and MT based on unstructured triangular grid

AI Zheng-Min, YE Yi-Xin, TANG Wen-Wu, CHEN Xiao, DU Jia-Ming

图3 自适应正演网格剖分示意(以CSEM网格为例) a—初次优化网格,1 445个节点,2 849个三角单元; b—第12次自适应细化后的最终网格部分,43 127个节点,86 139个三角单元; 示意图只展示了模型中间的异常区域

Fig.3 Schematic diagram of adaptive forward meshing (taking CSEM mesh as an example) a—the first optimized mesh containing 1 445 nodes and 2 849 triangular elements; b—the final mesh after the 12th adaptive refinement, containing 43 127 nodes and 86 139 triangular elements; the diagram only shows the abnormal area in the middle part of the model