地震地磁观测与研究2017，Vol.38Issue(6)：41-47,7.DOI:10.3969/j.issn.1003-3246.2017.06.008
网格剖分方式对大地电磁数据反演的影响
The influence of mesh generation method on the inversion of magnetotelluric data
摘要
Abstract
With the development of computer technology, magnetotelluric data inversion method has been an unprecedented development. A very important issue in the process of inversion is how to generation mesh, and which standards can be follow. Previous studies on this issue are very limited. In this paper, the study on this issue can help us to determine the factors that affect the mesh generation, and ifnd a suitable mesh generation method. So we design a complex model, and add the random error to the data, which get from the forward, as the inversion input data. And then the data is inversed whit the different mesh generation method, the different inversion methods, and the same parameters. The results obtained are compared and analyzed. The results show that, under the conditions of the model and parameters which be used in this paper, the DASOCC inversion, when the vertical and horizontal mesh all get less, can get the satisfactory results. That is, using the mesh of one lattice for one measuring point in horizontal and gradually more sparse lattice in vertical, 100m in the surface and 1.1 times in turn to depth. For a better inversion result of the NLCG inversion, it is suggested the same mesh in vertical as DASOCC inversion, but inserting a lattice between two measuring points in horizontal.关键词
大地电磁/二维反演/网格剖分方式Key words
magnetotelluric/2D inversion/mesh generation method引用本文复制引用
田继枫..网格剖分方式对大地电磁数据反演的影响[J].地震地磁观测与研究,2017,38(6):41-47,7.基金项目
中国地震局地球物理研究所中央级公益性科研院所基本科研业务专项(项目编号:DQJB15B05) （项目编号:DQJB15B05）
