The secular variation of earth's magnetic field

Details The secular variation of earth's magnetic field The secular variation of earth's magnetic field

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.317..777b&link_type=abstract

Nature (ISSN 0028-0836), vol. 317, Oct. 31, 1985, p. 777-781.

Computer Science

Numerical Analysis

183

Earth Core, Mathematical Models, Planetary Magnetic Fields, Secular Variations, Earth Mantle, Error Analysis, Geophysical Fluids, Numerical Analysis

Scientific paper

Models of the magnetic field at the core-mantle boundary (CMB) at selected epochs from 1715.0 to 1980.0 are investigated. The characteristics of the secular variation are shown and discussed, and the large changes in flux that are found are interpreted using numerical models. The results suggest that the flow of core fluid is coupled to the mantle, and that magnetic diffusion is significant.

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