Rossby Waves and Zonons in Zonostrophic Turbulence

Semion Sukoriansky; Nadejda Dikovskaya; Roger Grimshaw; Boris Galperin

doi:10.1063/1.3701355

Rossby Waves and Zonons in Zonostrophic Turbulence

Semion Sukoriansky, Nadejda Dikovskaya, Roger Grimshaw, Boris Galperin

College of Marine Science

Research output: Contribution to journal › Article › peer-review

Abstract

Two-dimensional, small-scale forced turbulent flows on the surface of a rotating sphere, along with the familiar Rossby-Haurwitz waves, reveal a new class of waves termed zonons. The zonons form non-dispersive wave packets that propagate in the westward direction with the velocity equal to the phase speed of the most energetic Rossby-Haurwitz wave. Zonons preserve their identity even after the forcing is switched off and the flow undergoes structural reorganization. Zonons reside in locations with the maximum meridional shear and are engaged in strong energy exchange with themean flow. These physical properties of zonons point to their identitywith Rossby solitary waves. The symbiosis between themean flow and the solitarywaves plays an important role in the large-scale dynamics.

Original language	American English
Journal	AIP Conference Proceedings
Volume	1439
DOIs	https://doi.org/10.1063/1.3701355
State	Published - Jan 1 2012

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title = "Rossby Waves and Zonons in Zonostrophic Turbulence",

abstract = " Two-dimensional, small-scale forced turbulent flows on the surface of a rotating sphere, along with the familiar Rossby-Haurwitz waves, reveal a new class of waves termed zonons. The zonons form non-dispersive wave packets that propagate in the westward direction with the velocity equal to the phase speed of the most energetic Rossby-Haurwitz wave. Zonons preserve their identity even after the forcing is switched off and the flow undergoes structural reorganization. Zonons reside in locations with the maximum meridional shear and are engaged in strong energy exchange with themean flow. These physical properties of zonons point to their identitywith Rossby solitary waves. The symbiosis between themean flow and the solitarywaves plays an important role in the large-scale dynamics.",

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T1 - Rossby Waves and Zonons in Zonostrophic Turbulence

AU - Sukoriansky, Semion

AU - Dikovskaya, Nadejda

AU - Grimshaw, Roger

AU - Galperin, Boris

PY - 2012/1/1

Y1 - 2012/1/1

N2 - Two-dimensional, small-scale forced turbulent flows on the surface of a rotating sphere, along with the familiar Rossby-Haurwitz waves, reveal a new class of waves termed zonons. The zonons form non-dispersive wave packets that propagate in the westward direction with the velocity equal to the phase speed of the most energetic Rossby-Haurwitz wave. Zonons preserve their identity even after the forcing is switched off and the flow undergoes structural reorganization. Zonons reside in locations with the maximum meridional shear and are engaged in strong energy exchange with themean flow. These physical properties of zonons point to their identitywith Rossby solitary waves. The symbiosis between themean flow and the solitarywaves plays an important role in the large-scale dynamics.

AB - Two-dimensional, small-scale forced turbulent flows on the surface of a rotating sphere, along with the familiar Rossby-Haurwitz waves, reveal a new class of waves termed zonons. The zonons form non-dispersive wave packets that propagate in the westward direction with the velocity equal to the phase speed of the most energetic Rossby-Haurwitz wave. Zonons preserve their identity even after the forcing is switched off and the flow undergoes structural reorganization. Zonons reside in locations with the maximum meridional shear and are engaged in strong energy exchange with themean flow. These physical properties of zonons point to their identitywith Rossby solitary waves. The symbiosis between themean flow and the solitarywaves plays an important role in the large-scale dynamics.

UR - https://digitalcommons.usf.edu/msc_facpub/1510

UR - https://doi.org/10.1063/1.3701355

U2 - 10.1063/1.3701355

DO - 10.1063/1.3701355

M3 - Article

VL - 1439

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

ER -

Rossby Waves and Zonons in Zonostrophic Turbulence

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