Busse, F.H. and Simitev, R.D. (2008). Toroidal flux oscillation as possible cause of geomagnetic excursions and reversals. Physics of the Earth and Planetary Interiors, 168 (3-4), pp. 237-243.
Abstract
It is proposed that convection driven dynamos operating in planetary cores could be oscillatory even when the oscillations are not directly noticeable from the outside. Examples of dynamo simulations are pointed out that exhibit oscillations in the structure of the azimuthally averaged toroidal magnetic flux while the mean poloidal field shows only variations in its amplitude. In the case of the geomagnetic field, global excursions may be associated with these oscillations. Long period dynamo simulations indicate that the oscillations may cause reversals once in a while. No special attempt has been made to use most realistic parameter values. Nevertheless some similarities between the simulations and the paleomagnetic record can be pointed out. Crown
Publication DOI: | https://doi.org/10.1016/j.pepi.2008.06.007 |
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Divisions: | College of Engineering & Physical Sciences > Systems analytics research institute (SARI) |
Additional Information: | © 2009, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
Uncontrolled Keywords: | geodynamo,excursions,reversal,dynamo oscillations |
Publication ISSN: | 1872-7395 |
Last Modified: | 05 Aug 2024 12:20 |
Date Deposited: | 24 Sep 2013 11:18 |
Full Text Link: | |
Related URLs: |
http://www.scop ... tnerID=8YFLogxK
(Scopus URL) |
PURE Output Type: | Letter |
Published Date: | 2008-07 |
Authors: |
Busse, F.H.
Simitev, R.D. |
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Version: Accepted Version
License: Creative Commons Attribution Non-commercial No Derivatives
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