The method of finite differences has been employed to solve a variety of 3D electromagnetic (EM) forward problems arising in geophysical applications. Specific sources considered include dipolar and magnetotelluric (MT) field excitation in the frequency domain. In the forward problem, the EM fields are simulated using a vector Helmholtz equation for the electric field, which are approximated using finite differences on a staggered grid. To obtain the fields, a complex-symmetric matrix system of equations is assembled and iteratively solved using the quasi minimum method (QMR) method. Perfectly matched layer (PML) absorbing boundary conditions are included in the solution and are necessary to accurately simulate fields in propagation regime ...
This thesis presents the development of a computational algorithm in Fortran, to model 3D magnetotel...
Finite-element solutions to the three-dimensional geophysical electromagnetic forward modeling prob...
We are developing a new 3D code for application to electromagnetic induction tomography and applicat...
A numerical modeling algorithm has been developed to simulate the electromagnetic response of a thre...
A suite of programs collectively referred to as 3Dfeem (3-D finite element electromagnetic model) ha...
Electromagnetic (EM) surveys are widely used in geophysical study. Reliable 3-D forward modeling is...
An effective solver for the large complex system of linear equations is critical for improving the a...
A finite-difference approach with non-uniform meshes was presented for simulating magnetotelluric re...
Summary. This paper deals with the further development of finite-difference methods for electromagne...
We attempted to develop a direct time-domain, finite-difference solution for the electromag-netic re...
A 3-D frequency domain EM modeling code has been implemented for helicopter electromagnetic (HEM) si...
Journal ArticleNumerical modeling of the quasi-static electromagnetic (EM) field in the frequency do...
W. Hohmannt ABSTRACT An inhomogeneous Dirichlet boundary condition is imposed at the surface of the ...
Conservation of electric current and magnetic flux can be explicitly enforced by modeling Maxwell&ap...
We describe a novel staggered-standard grid finite-difference (FD) modeling algorithm for computing ...
This thesis presents the development of a computational algorithm in Fortran, to model 3D magnetotel...
Finite-element solutions to the three-dimensional geophysical electromagnetic forward modeling prob...
We are developing a new 3D code for application to electromagnetic induction tomography and applicat...
A numerical modeling algorithm has been developed to simulate the electromagnetic response of a thre...
A suite of programs collectively referred to as 3Dfeem (3-D finite element electromagnetic model) ha...
Electromagnetic (EM) surveys are widely used in geophysical study. Reliable 3-D forward modeling is...
An effective solver for the large complex system of linear equations is critical for improving the a...
A finite-difference approach with non-uniform meshes was presented for simulating magnetotelluric re...
Summary. This paper deals with the further development of finite-difference methods for electromagne...
We attempted to develop a direct time-domain, finite-difference solution for the electromag-netic re...
A 3-D frequency domain EM modeling code has been implemented for helicopter electromagnetic (HEM) si...
Journal ArticleNumerical modeling of the quasi-static electromagnetic (EM) field in the frequency do...
W. Hohmannt ABSTRACT An inhomogeneous Dirichlet boundary condition is imposed at the surface of the ...
Conservation of electric current and magnetic flux can be explicitly enforced by modeling Maxwell&ap...
We describe a novel staggered-standard grid finite-difference (FD) modeling algorithm for computing ...
This thesis presents the development of a computational algorithm in Fortran, to model 3D magnetotel...
Finite-element solutions to the three-dimensional geophysical electromagnetic forward modeling prob...
We are developing a new 3D code for application to electromagnetic induction tomography and applicat...