Open AccessThe Geomagnetic Effects of Two‐dimensional Conductivity Inhomogeneities at Different Depths
Author(s) -
Jones F. Walter,
Price Albert T.
Publication year - 1971
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.1971.tb03604.x
Subject(s) - overburden , earth's magnetic field , geology , surface (topology) , conductivity , geophysics , field (mathematics) , geometry , magnetic field , mathematics , physics , geotechnical engineering , quantum mechanics , pure mathematics
Summary Field distributions and surface effects of two‐dimensional conductivity inhomogeneities are investigated. Inhomogeneities of different thicknesses at the Earth's surface and also inhomogeneities of fixed sizes but at various depths are considered. A numerical method is used to solve the differential equations and boundary conditions for the two‐dimensional models. The surface variations of the various components are compared for the different dimensions and overburden depths. Important differences are found in the behaviour of the apparent resistivities calculated for H and E polarizations of the applied field.