Long-term polarity stability and strength of the geomagnetic dipole

Details Long-term polarity stability and strength of the geomagnetic dipole Long-term polarity stability and strength of the geomagnetic dipole

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.331..702p&link_type=abstract

Nature (ISSN 0028-0836), vol. 331, Feb. 25, 1988, p. 702-705. NSF-supported research.

Physics

28

Field Strength, Geomagnetism, Long Term Effects, Magnetic Dipoles, Paleomagnetism, Polarity, Atlantic Ocean, Dynamo Theory, Indian Ocean, Magsat Satellites

Scientific paper

Evidence is presented for a correlation between terrestrial polarity superchrons and paleointensity data as well as marine-magnetic and MAGSAT anomalies. The results indicate that the dipole moment is correlated to the reversal frequency, being appreciably greater during the fixed polarity superchrons. This new information derived from the reversal record provides fresh insight into the workings of the geodynamo and also explains why the oceanic crust associated with the Cretaceous quiet zone carries such a strong thermoremanence.

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