Open AccessEstimates for Induced Oceanic Electric Currents Flowing near the Coast and their Associated Magnetic Fields just Inland
Author(s) -
HewsonBrowne R. C.
Publication year - 1973
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1973.tb02403.x
Subject(s) - geophysics , magnetic field , electric field , magnitude (astronomy) , electric current , geology , generality , magnetic anomaly , electromagnetic induction , ocean current , magnetic potential , current (fluid) , physics , mechanics , oceanography , electromagnetic coil , psychology , quantum mechanics , astronomy , psychotherapist
Summary In studying the electric currents and magnetic fields arising from induction in the oceans a number of numerical procedures have been devised by various authors. In all of these methods difficulties arise at the edge of the oceans where the electric currents and magnetic fields change appreciably over a small distance. A physical explanation of these phenomena has been given in the preceding paper in terms of magnetic merging. In the present paper estimates are obtained for the electric currents and magnetic fields near the coast. These depend partly upon the induced currents which are enhanced near the ocean'smargin and partly upon the currents far from the edge of the ocean. A two‐dimensional model is formulated and related to more general models. The orders of magnitude which are obtained are believed to have certain generality, and are tested against exact calculations.