Abstract
By the example of a standard three-dimensional model of thermal convection in a rotating spherical shell, it is shown how radial density gradient ▿ρ affects the generation of hydrodynamic helicity χ. For example, the generation of χ weakly depends on ▿ρ inside a Taylor cylinder and, outside the cylinder, the compressibility of the liquid amplifies the generation of χ. The consequences for the geodynamo theory are considered.
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Original Russian Text © M.Yu. Reshetnyak, 2012, published in Geomagnetizm i Aeronomiya, 2012, Vol. 52, No. 3, pp. 421–425.
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Reshetnyak, M.Y. Effect of compressibility on the generation of hydrodynamic helicity in the Earth’s liquid core. Geomagn. Aeron. 52, 398–402 (2012). https://doi.org/10.1134/S0016793212030139
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DOI: https://doi.org/10.1134/S0016793212030139