Electromagnetic Fields Generated by Ocean Waves.

摘要

A primary purpose of this paper is to generalize and extend previous work in order to remove restrictive assumptions imposed on sea water velocity fields. The author presumes only that the divergence of velocity vanishes and so only exclude flow fields produced by sound waves. By using Faraday's and Ampere's laws to derive a vector potential function for the induced electromagnetic field,the author demonstrates that the electromagnetic field generated by a progressive ocean wave in a horizontally stratified ocean is a sum of a transverse electric type field, a transverse magnetic type field,and an electrostatic field. Velocity components in a vertical plane containing the direction of wave propagation generate the transverse electric part of the field,and the velocity component normal to the plane generates the transverse magnetic part of the field. The electrostatic part of the field results from surface charges that halt vertical electric currents at an ocean surface.