Electromagnetic scattering by twodimensional inhomogeneity due to an oscillating magnetic dipole
Abstract
A numerical method of computing the electromagnetic response of twodimensional earth models to an oscillating magnetic dipole is presented. The generalized electromagnetic variational integral is reduced to a sum of twodimensional variational integrals by Fourier transformation. Discretization of each twodimensional integral is carried out in terms of the secondary electric fields using the finite element method. Following the variational principle, each harmonic integral is reduced to a set of simultaneous equations. From each set of electric field solutions obtained by solving the simultaneous equations, the secondary magnetic fields are computed numerically. After inversely Fourier transforming the secondary electric and magnetic fields, the total fields are finally obtained by adding and analytically calculated primary fields.
 Publication:

Ph.D. Thesis
 Pub Date:
 May 1978
 Bibcode:
 1978PhDT........92L
 Keywords:

 Electromagnetic Scattering;
 Magnetic Dipoles;
 Numerical Analysis;
 Algorithms;
 Earth Surface;
 Electric Fields;
 Finite Element Method;
 Fourier Transformation;
 Magnetic Fields;
 Oscillations;
 Two Dimensional Models;
 Communications and Radar