Modeling electromagnetic field in shelf areas
A.V. Marinenko, M.I. Epov, E.P. Shurina
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the RAS, 3 prosp. Akad. Koptyuga, Novosibirsk, 630090, Russia
Keywords: marine geophysics; finite-element method; electric field; conductivity; electric charge
Pages: 467-476
Abstract
Water salinity at shallow sea depths in shelf areas changes with depth, which causes respective conductivity changes. We discuss algorithms for computing monochromatic electric fields using the vector finite-element method with different realizations of depth dependence of conductivity. The algorithms have been applied to compute vertical conductivity patterns and to explore its influence on the electric field measured on the surface.
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