On the Electric Field due to Tides II

Abstract

In the previous paper, the electric field induced by tidal current was discussed in some detail for the case where the earth's magnetic field is vertical. In this paper we shall consider the effect of the horizontal magnetic field on the electric field and current distribution in the sea water and the sea bed. A general description will be made in Section 2 concerning the phenomenon in the tidal current of rectangular cross-section, and a method of obtaining the electric potential in general case of velocity distribution will be given Section 3. In Section 4, a method of solving so-called two-layer problems will be discussed in general, and in Sections 5 and 6, some results of numerical computation will be shown. The method by which some of these results have been obtained will be explained in Appendix I, while Appendix II will be devoted to a list of the formulas for electric potential, electric field and electric current due to horizontal component of the earth's magnetic field in the streams of rectangular cross-section with various velocity distributions.