Certain spectral properties of cyclonic turbulence in the Earth's liquid core

Details Certain spectral properties of cyclonic turbulence in the Earth's liquid core Certain spectral properties of cyclonic turbulence in the Earth's liquid core

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ge%26ae..48..400r&link_type=abstract

Geomagnetism and Aeronomy, Volume 48, Issue 3, pp.400-407

Physics

4

91.10.By, 91.35.Cb

Scientific paper

Rapid diurnal rotation of planets results in the appearance of cyclonic thermal turbulence in liquid cores, which is the source of generation of the observed magnetic fields. The model that makes it possible to reproduce characteristic features of small-scale geostrophic flows in the physical and wave spaces is considered in the work. The flows of energy and hydrodynamic helicity as a function of the wavenumber have been estimated. Joint existence of direct and inverse cascades has been indicated. The consequences for the Earth’s core and geodynamo problems have been considered.

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