zhaiyaobiaotistyle5>Studies and Applications of 2-D CSAMT Modeling and Inversion with A Dipole Source and Topography
详细信息
- 责任者：Lei Da (Institute of Geophysical and Geochemical Exploration ; CAGS ; Langfang 065000 ; China)
- 刊名：Chinese Journal of Geophysics
- 出版年：2010
- 卷期：53(4)
- 关键词：可控源音频大地电磁法 ; controlled-source audio magnetotelluric methods
- 页码：p.982-993
- 图表：7 illus., 23 refs.
- 分类号：1600
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
Taking eliminating terrain effect as the main target, this paper adopts the 2D earth and 3D source terrain model and uses the weighted cosine integral method to carry out finite-element calculation in wave-number domain. To simulate complex terrain the author selected cross-symmetrical triangular grid to realize forward calculation of 2D CSAMT data for the electrical equatorial dipole array. On the basis of the 2D forward calculation, a set of rolling terrain 2D CSAMT inversion technique was developed based on the OCCAM method. Through theoretical calculation and real data processing, the terrain effects could be effectively corrected.