Towards a realistic theory of the geodynamo

Details Towards a realistic theory of the geodynamo Towards a realistic theory of the geodynamo

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gapfd..60...89b&link_type=abstract

Geophysical and Astrophysical Fluid Dynamics, vol. 60, Issue 1, pp.89-134

Physics

Fluid Dynamics

22

Dynamo Theory, Geomagnetism, Model-Z, Turbulence

Scientific paper

The physics of the geodynamo is discussed. The main processes relevant for the buoyancy driven geodynamo are isolated. The successive stages of development of geodynamo theory are briefly described. The mechanism of local turbulence in the Earth's core is explained, and an estimate is presented of the turbulent transport of density inhomogeneities in the Earth's core. The significance of this turbulent transport to the geodynamo mechanism is stressed. The general scheme of the complete geodynamo theory of the future is outlined.

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