Solution strategies for two- and three-dimensional magnetotelluric forward problems

摘要：

We analyse a variety of solution strategies for two-dimensional(2D) and three-dimensional(3D) magnetotelluric forward problems. To impose efficient strategies on the problem, the finite-element equations arising from Maxwell equations are employed in the magnetotelluric forward problem.Krylov subspace methods are then used to solve the resulting kernel for solving 2D and 3D forward problems, where multiple solutions of the forward problem are required. In there, the Bi-CGSTAB algorithm with incomplete LU decomposition for preconditioning was used to solve this system linear equation, with advantages of high speed, high precision and stability. By numerical simulation, we verified the correctness of the 2D/3D magnetotelluric forward method.

关键词： Magnetotelluric forward modeling finite-element Krylov subspace Bi-CGSTAB

作者: TONG Xiaozhong LIU Jianxin GUO Rongwen SUN Ya LI Aiyong

作者单位: School of Info-physics and Geomatics Engineer, Central South University, Changsha, China School of Info-physics and Geomatics Engineer, Central South University, Changsha, China;Key Laborat Team 814, East China Bureau of nonferrous metal Geological Exploration, Zhenjiang, China

会议类型: 国际会议

会议名称: The 19th International Workshop on Electromagnetic Induction in the Earth(第十九届国际地球电磁感应学术研讨会)

会议地点: 北京

会议语种:英文

页码: 562-564

在线出版日期: 2008-10-23（万方平台首次上网日期，不代表论文的发表时间）