Email this article Geodynamo Models
- Authors: Reshetnyak M.Y.1,2
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Affiliations:
- O. Yu. Shmidt Institute of Physics of the Earth, Russian Academy of Sciences
- N. V. Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation
- Issue: Vol 61, No 8-9 (2019)
- Pages: 537-544
- Section: Article
- URL: https://journals.rcsi.science/0033-8443/article/view/243905
- DOI: https://doi.org/10.1007/s11141-019-09914-9
- ID: 243905
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Abstract
We consider typical approaches to modeling of geodynamo processes in the liquid core of the Earth. Some features of magnetohydrodynamic turbulence under rapid rotation conditions are presented. On the example of net helicities, it is shown how rapid rotation facilitates the generation of a large-scale magnetic field and how the mechanism of the inverse effect of the magnetic field on the flow under geostrophy conditions is implemented. The arguments, based on the symmetry properties, in favor of the existence of a connection between the rapid rotation and the inversion frequency, as well as a number of other large-scale characteristics of the dynamo system, are given.
About the authors
M. Yu. Reshetnyak
O. Yu. Shmidt Institute of Physics of the Earth, Russian Academy of Sciences; N. V. Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation
Author for correspondence.
Email: m.reshetnyak@gmail.com
Russian Federation, Moscow; Moscow
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