Do virtual geomagnetic poles follow preferred paths during geomagnetic reversals?

Details Do virtual geomagnetic poles follow preferred paths during geomagnetic reversals? Do virtual geomagnetic poles follow preferred paths during geomagnetic reversals?

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993natur.361..342m&link_type=abstract

Nature (ISSN 0028-0836), vol. 361, no. 6410, p. 342-344.

Computer Science

51

Geomagnetism, Magnetic Poles, Sedimentary Rocks, Statistical Analysis

Scientific paper

The available database of geomagnetic reversal records from the past 12 Myr are analyzed using a statistical test specifically designed to test the hypothesis of two preferred antipodal longitudinal bands. The analysis shows that the records, taken as a group of independent observations, show an overall preference for two antipodal longitudinal bands. However, the site longitudes are also strongly grouped and a comparison of the transitional virtual geomagnetic pole (VGP) longitude with site longitudes shows an unlikely grouping under the hypothesis of a genuine geographical preference for transitional VGPs. It is concluded that it is premature to accept the hypothesis of mantle control over the core during geomagnetic reversals.

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