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The alpha-effect in the presence of rapid rotation

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Abstract

The relation of the hydrodynamic helicity and alpha-effect predicted by the mean-field dynamo theory is considered using the three-dimensional dynamo model in the rapidly rotating flat layer heated from below. Despite the theoretical limitations associated with the requirement of uniformity and isotropism of random fields, the alpha-effect is actually proportional to helicity in the geostrophic flows under consideration. Interpretation of this nice agreement is proposed.

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Authors and Affiliations

  1. Schmidt Joint Institute of Physics of the Earth, Russian Academy of Sciences, Bol’shaya Gruzinskaya ul. 10, Moscow, 123810, Russia

    M. Yu. Reshetnyak

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  1. M. Yu. Reshetnyak
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Correspondence to M. Yu. Reshetnyak.

Additional information

Original Russian Text © M.Yu. Reshetnyak, 2012, published in Doklady Akademii Nauk, 2012, Vol. 444, No. 5, pp. 496–500.

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Reshetnyak, M.Y. The alpha-effect in the presence of rapid rotation. Dokl. Phys. 57, 224–228 (2012). https://doi.org/10.1134/S1028335812060067

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  • DOI: https://doi.org/10.1134/S1028335812060067

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