Redistribution of Energy during Horizontal Stretching of Ocean Vortices by Barotropic Currents

V. V. Zhmur; Жмур В. В.; D. A. Harutyunyan; Арутюнян Д. А.

doi:10.31857/S0030157423010185

Redistribution of Energy during Horizontal Stretching of Ocean Vortices by Barotropic Currents

作者: Zhmur V.V.¹, Harutyunyan D.A.²
隶属关系:
1. P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences
2. Moscow Institute of Physics and Technology (State University)
期: 卷 63, 编号 1 (2023)
页面: 3-19
栏目: Физика моря
URL: https://journal-vniispk.ru/0030-1574/article/view/136219
DOI: https://doi.org/10.31857/S0030157423010185
EDN: https://elibrary.ru/AFRQHI
ID: 136219

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详细
作者简介
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详细

The paper proposes a study of the transformation of the physical properties of mesoscale vortices during their strong elongation by horizontal barotropic currents. It is shown that when the core is pulled out, the kinetic and available potential energies of the vortex individually, as well as their sum (the total mechanical energy of the vortex) decreases, and the vortex itself degrades in all physical parameters. The decrease in the energy of the ensemble of vortices when they are pulled out by the background flow is interpreted as a manifestation of the reverse energy cascade property or, in older terminology, the phenomenon of negative viscosity.

关键词

geostrophy, ageostrophy, quasi-geostrophic approximation, mesoscale and submesoscale vortex formations (vortex filaments, filaments), vortex core, core energy, available potential energy, Rossby number, inverse energy cascade

作者简介

V. Zhmur

P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences

编辑信件的主要联系方式.
Email: zhmur-vladimir@mail.ru
Russia, Moscow

D. Harutyunyan

Moscow Institute of Physics and Technology (State University)

Email: zhmur-vladimir@mail.ru
Russia, Moscow

参考

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