Open AccessModelling Geomagnetic Variations in or near an Ocean using a Generalized Image Technique
Author(s) -
Greenhouse J. P.,
Parker R. L.,
White A.
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.tb05834.x
Subject(s) - geology , geophysics , earth's magnetic field , conductor , mantle (geology) , electromagnetic induction , boundary value problem , boundary (topology) , geodesy , geometry , mathematical analysis , magnetic field , physics , mathematics , quantum mechanics , electromagnetic coil
Summary A generalized image technique is described for modelling electromagnetic induction in two‐dimensional systems, consisting of a thin (Price‐type) ocean overlying a perfect conductor in the mantle. The method constructs a Green's function for currents in the ocean by conformally mapping the perfect conductor boundary into a straight line. Examples are given that show the effects to be expected at an ocean‐continent boundary with isotherms rising under the ocean, and at a mid‐ocean rise where the high temperatures are believed to be quite shallow.