%0 Journal Article
%T MAGNETOTELLURIC THREE-DIMENSIONAL MODELING USING THE STAGGERED-GRID FINITE DIFFERENCE METHOD<br>大地电磁法三维交错采样有限差分数值模拟
%A TAN HANDONG
%A <br>谭捍东
%J 地球物理学报
%D 2003
%I 
%X The crucial problems of 3 T5BZ]D forward modeling using the staggered-grid finite difference method are described in detail in this paper. They are staggered-grid, discretization of integrated form of Maxwell equation, boundary condition, solving linear algebra equations and calculating D forward modeling using the staggered-grid finite difference method are described in detail in this paper. They are staggered-grid, discretization of integrated form of Maxwell equation, boundary condition, solving linear algebra equations and calculating 3 T5BZ]D tensor impedance. Giving the more explicit boundary conditions and using Bi-conjugate gradients stabilized method to solve the linear algebra equation with large coefficient matrix, we get a fast algorithm of high-precision to calculate effectively electrical and magnetic fields in the whole space. This has been proved by comparing the 3D forward modeling solutions with analytic solution to abutting quarter-spaces, and 2D forward modeling to 2D prism using the 2D finite element method. This efficient algorithm has setup basis for research of D tensor impedance. Giving the more explicit boundary conditions and using Bi-conjugate gradients stabilized method to solve the linear algebra equation with large coefficient matrix, we get a fast algorithm of high-precision to calculate effectively electrical and magnetic fields in the whole space. This has been proved by comparing the 3D forward modeling solutions with analytic solution to abutting quarter-spaces, and 2D forward modeling to 2D prism using the 2D finite element method. This efficient algorithm has setup basis for research of 3D inversion .
%K Magnetotellurics
%K Staggered-grid finite difference method
%K Three-dimensional forward modeling
%K Boundary condition
%K Bi-conjugate gradients stabilized method<br>大地电磁法
%K 交错采样有限差分法
%K 三维正演
%K 双共轭梯度稳定解法
%K 边界条件
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=C6C9405129A4A9A5&yid=D43C4A19B2EE3C0A&vid=D997634CFE9B6321&iid=94C357A881DFC066&sid=703F3C1B6594BA64&eid=FD6137FFCE59D193&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=20&reference_num=10