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Pis'ma v Zh. Èksper. Teoret. Fiz., 2018, Volume 108, Issue 2, Pages 75–82 (Mi jetpl5621)  

PLASMA, HYDRO- AND GAS DYNAMICS

Zonal flows in two-dimensional decaying magnetohydrodynamic turbulence on a $\beta$-plane

T. A. Zinyakovab, A. S. Petrosyanba

a Space Research Institute, Russian Academy of Sciences, Moscow, Russia
b Moscow Institute of Physics and Technology (State University), Dolgoprudnyi, Moscow region, Russia

Abstract: A scale for two-dimensional $\beta$-plane magnetohydrodynamic turbulence is proposed that characterizes an upper bound of the energy containing interval similar to a classical Rhines scale for neutral fluid turbulence on a $\beta$-plane. It is found that only unsteady zonal flows with complex temporal dynamics are formed in two-dimensional magnetohydrodynamic turbulence on the $\beta$-plane. It is shown that flow nonstationarity is due to the appearance of isotropic magnetic islands caused by the Lorentz force in the system. The characteristic dimensions of a flow are in agreement with the proposed scale.

Funding Agency Grant Number
Russian Academy of Sciences - Federal Agency for Scientific Organizations 28
Foundation for the Development of Theoretical Physics and Mathematics BASIS


DOI: https://doi.org/10.1134/S0370274X18140011

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English version:
Journal of Experimental and Theoretical Physics Letters, 2018, 108:2, 85–92

Bibliographic databases:

Document Type: Article
Received: 07.05.2018
Revised: 25.06.2018

Citation: T. A. Zinyakov, A. S. Petrosyan, “Zonal flows in two-dimensional decaying magnetohydrodynamic turbulence on a $\beta$-plane”, Pis'ma v Zh. Èksper. Teoret. Fiz., 108:2 (2018), 75–82; JETP Letters, 108:2 (2018), 85–92

Citation in format AMSBIB
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\paper Zonal flows in two-dimensional decaying magnetohydrodynamic turbulence on a $\beta$-plane
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2018
\vol 108
\issue 2
\pages 75--82
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\crossref{https://doi.org/10.1134/S0370274X18140011}
\transl
\jour JETP Letters
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\vol 108
\issue 2
\pages 85--92
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