Mutual Impedances for Parallel Wires Over a Two-Layer Earth

J. R. Wait developed an analytical formulation for the fields of an infinite line source above a stratified earth which can be extended to include any number of layers. This formulation is numerically evaluated using Filon´s method to give results on the mutual impedance between two long conductors above a stratified earth. To demonstrate the usefulness of this formulation, numerical results are compared to the experimental results of Bowen and Gilkeson in which the mutual impedance was observed in both its reactive and resistive components at Cross Keys, NJ.