Email this article Zonal Flows in Two-Dimensional Decaying Magnetohydrodynamic Turbulence on a β-Plane
- Authors: Zinyakov T.A.1,2, Petrosyan A.S.1,2
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Affiliations:
- Space Research Institute
- Moscow Institute of Physics and Technology (State University)
- Issue: Vol 108, No 2 (2018)
- Pages: 85-92
- Section: Plasma, Hydro- and Gas Dynamics
- URL: https://journals.rcsi.science/0021-3640/article/view/161174
- DOI: https://doi.org/10.1134/S002136401814014X
- ID: 161174
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Abstract
A scale for two-dimensional β-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 -plane. It is found that only unsteady zonal flows with complex temporal dynamics are formed in two-dimensional magnetohydrodynamic turbulence on the -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.
About the authors
T. A. Zinyakov
Space Research Institute; Moscow Institute of Physics and Technology (State University)
Author for correspondence.
Email: zinyakov@phystech.edu
Russian Federation, Moscow, 117997; Dolgoprudnyi, Moscow region, 141701
A. S. Petrosyan
Space Research Institute; Moscow Institute of Physics and Technology (State University)
Email: zinyakov@phystech.edu
Russian Federation, Moscow, 117997; Dolgoprudnyi, Moscow region, 141701
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