Electromagnetic Induction in a Hemi-Spherical Ocean by S_q

Abstract

A theory of electromagnetic induction within a hemi-spherical conducting sheet is described. The theory is applied to the induction by S_q in a large ocean of uniform depth bounded by two meridians. The patterns of the induced currents are obtained and illustrated both for the 24- and 12-hourly components. Unlike the previous theories, the effect of self-induction, which turns out to be rather important, is fully taken into account. The magnetic fields produced by the currents induced in the ocean amount to several gammas. The electric field in the sea associated with the induction would be of the order of mv/km.