Palaeomagnetic constraints on the geometry of the geomagnetic field during reversals

Details Palaeomagnetic constraints on the geometry of the geomagnetic field during reversals Palaeomagnetic constraints on the geometry of the geomagnetic field during reversals

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.356..400v&link_type=abstract

Nature (ISSN 0028-0836), vol. 356, no. 6368, April 2, 1992, p. 400-407.

Physics

Geophysics

74

Geomagnetism, Magnetic Field Configurations, Magnetic Field Inversions, Magnetic Poles, Paleomagnetism, Geophysics, Volcanoes

Scientific paper

Palaeomagnetic records of the path of the pole during reversals of the earth's magnetic field provide a test of the hypothesis that dipolar or low-order axisymmetric components of the field dominate during reversals. Multiple records of reversals during the past 12 Myr show no simple or consistent geographical pattern. Although a more robust analysis of the transitional field awaits a greater number of well-distributed sampling sites, the present data are not inconsistent with the simplest models, in which a field reminiscent of the nondipole component of the present-day field becomes dominant.

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