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Decay of the virtual dipole moment during polarity transitions and geomagnetic excursions Decay of the virtual dipole moment during polarity transitions and geomagnetic excursions

Lin, Jin Lu, Verosub, Kenneth L. and Roberts, A.P. (1994) Decay of the virtual dipole moment during polarity transitions and geomagnetic excursions Decay of the virtual dipole moment during polarity transitions and geomagnetic excursions Geophysical Research Letters, 21, (7), pp. 525-528.

Record type: Article

Abstract

We have analyzed paleointensity data from five polarity transitions and geomagnetic excursions recorded by lava flows. We find a significant correlation between the logarithm of the virtual dipole moment and the angle between the virtual geomagnetic pole and the Earth's rotation axis. This correlation implies that any physical model for geomagnetic field behavior during transitions and excursions must address the question of how changes in direction are linked to changes in intensity. In addition, large changes in paleointensity may occur even when the virtual geomagnetic pole is still at high latitude so the concept of transitional direction must be redefined.

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Published date: 1994
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 66145
URI: http://eprints.soton.ac.uk/id/eprint/66145
ISSN: 0094-8276
PURE UUID: 21bdd77f-74e3-4b6d-9bf9-5ef05113e837

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Date deposited: 05 May 2009
Last modified: 19 Jul 2017 00:27

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Contributors

Author: Jin Lu Lin
Author: Kenneth L. Verosub
Author: A.P. Roberts

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