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Clark Di Leoni, P.; Mininni, P.D. "Absorption of waves by large-scale winds in stratified turbulence" (2015) Physical Review E - Statistical, Nonlinear, and Soft Matter Physics. 91(3)
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Abstract:

The atmosphere is a nonlinear stratified fluid in which internal gravity waves are present. These waves interact with the flow, resulting in wave turbulence that displays important differences with the turbulence observed in isotropic and homogeneous flows. We study numerically the role of these waves and their interaction with the large-scale flow, consisting of vertically sheared horizontal winds. We calculate their space- and time-resolved energy spectrum (a four-dimensional spectrum) and show that most of the energy is concentrated along a dispersion relation that is Doppler shifted by the horizontal winds. We also observe that when uniform winds are let to develop in each horizontal layer of the flow, waves whose phase velocity is equal to the horizontal wind speed have negligible energy. This indicates a nonlocal transfer of their energy to the mean flow. Both phenomena, the Doppler shift and the absorption of waves traveling with the wind speed, are not accounted for in current theories of stratified wave turbulence. © 2015 American Physical Society.

Registro:

Documento: Artículo
Título:Absorption of waves by large-scale winds in stratified turbulence
Autor:Clark Di Leoni, P.; Mininni, P.D.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and IFIBA, Buenos Aires, 1428, Argentina
Palabras clave:Dispersions; Turbulence; Current theories; Dispersion relations; Homogeneous flow; Horizontal layers; Internal gravity waves; Large-scale flows; Stratified fluid; Stratified turbulence; Wind
Año:2015
Volumen:91
Número:3
DOI: http://dx.doi.org/10.1103/PhysRevE.91.033015
Título revista:Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Título revista abreviado:Phys. Rev. E Stat. Nonlinear Soft Matter Phys.
ISSN:15393755
CODEN:PLEEE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15393755_v91_n3_p_ClarkDiLeoni

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Citas:

---------- APA ----------
Clark Di Leoni, P. & Mininni, P.D. (2015) . Absorption of waves by large-scale winds in stratified turbulence. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 91(3).
http://dx.doi.org/10.1103/PhysRevE.91.033015
---------- CHICAGO ----------
Clark Di Leoni, P., Mininni, P.D. "Absorption of waves by large-scale winds in stratified turbulence" . Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 91, no. 3 (2015).
http://dx.doi.org/10.1103/PhysRevE.91.033015
---------- MLA ----------
Clark Di Leoni, P., Mininni, P.D. "Absorption of waves by large-scale winds in stratified turbulence" . Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, vol. 91, no. 3, 2015.
http://dx.doi.org/10.1103/PhysRevE.91.033015
---------- VANCOUVER ----------
Clark Di Leoni, P., Mininni, P.D. Absorption of waves by large-scale winds in stratified turbulence. Phys. Rev. E Stat. Nonlinear Soft Matter Phys. 2015;91(3).
http://dx.doi.org/10.1103/PhysRevE.91.033015