RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 13, ES1001, doi:10.2205/2013ES000526, 2013

Geostrophic balance and reversals of the geomagnetic field

M. Yu. Reshetnyak

Abstract

The 3D geodynamo model in the rapidly rotating spherical shell with heating from below is considered. We show that correlation of the geomagnetic dipole with total magnetic energy in the core depends on the forces balance in the dynamo system. As a result, reversals of the field not always reflect essential changes of the magnetic energy in the core. This result is closely related to the slow decay of the magnetic spectrum at the surface of the core, and in the bulk of the liquid core, especially.

Received 23 November 2012; accepted 13 March 2013; published 17 March 2013.

 
Citation: Reshetnyak M. Yu. (2013), Geostrophic balance and reversals of the geomagnetic field, Russ. J. Earth Sci., 13, ES1001, doi:10.2205/2013ES000526.
 

Copyright 2013 by the Geophysical Center RAS.

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