Physics
Scientific paper
Apr 1973
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973pepi....7...97j&link_type=abstract
Physics of the Earth and Planetary Interiors, Volume 7, Issue 1, p. 97-110.
Physics
Scientific paper
The perturbation of alternating geomagnetic fields by conductivity discontinuities is considered. A numerical method is used to solve the two-dimensional induction problem. Models in which the conductivity contrast between conductive regions is great, such as between oceanic and continental regions, are considered. The perturbation field distributions for models with higher conductivity contrasts are compared with lower conductivity contrast models using a method recently developed by Jones (1972). Total field solutions are obtained for several models by using a very large grid as well as a folding-in technique. Results from the two methods for the various models are compared. It is found that the folding-in technique offers an alternative method for handling higher conductivity contrasts.
Ainslie B. A.
Jones Walter F.
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