Is low Rayleigh number convection possible in the Earth's core?

Details Is low Rayleigh number convection possible in the Earth's core? Is low Rayleigh number convection possible in the Earth's core?

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29g...9b&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 7, pp. 9-1, CiteID 1105, DOI 10.1029/2001GL014597

Physics

5

Geomagnetism And Paleomagnetism: Dynamo Theories, Planetology: Fluid Planets: Interiors (8147), Tectonophysics: Core Processes (1507)

Scientific paper

A simple model based on the rotating cylindrical annulus configuration is presented which demonstrates that two different sources of buoyancy one of which is characterized by a very low diffusivity can interact such that the latter balances the non-geostrophic part of the Coriolis force. It is suggested that the concentration of light elements in the Earth's core could play this role thereby facilitating immensely convection driven by thermal buoyancy.

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