Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/60001
Title: Near-Inertial Wave Trapping Near the Base of an Anticyclonic Mesoscale Eddy Under Normal Atmospheric Conditions
Authors: Martínez-Marrero, A. 
Barceló-Llull, B.
Pallàs-Sanz, E.
Aguiar González, Miguel Borja 
Estrada Allis, Sheila Natali 
Gordo, C. 
Grisolía, D. 
Rodríguez-Santana, A. 
Arístegui, J. 
UNESCO Clasification: 2510 Oceanografía
Keywords: Internal Gravity-Waves
Finescale Parameterizations
Richardson-Number
Turbulent Dissipation
Energy-Dissipation
Kinetic-Energy
Ocean
Propagation
Breaking
Scale
Near-Inertial Waves
Anticyclonic Eddy
Canary Eddy Corridor
Eddies
Mixing
Issue Date: 2019
Project: Estudios de la Bomba Vertical Oceánica en Remolinos de Mesoscala 
Flujos de Carbono en Un Sistema de Afloramiento Costero (Cabo Blanco, Nw de África); Modulación A Submesoscala de la Producción, Exportación y Consumo de Carbono 
Journal: Journal of geophysical research. Oceans 
Abstract: Observational evidence demonstrates the signature of near-inertial wave (NIW) trapping by a long-lived westward propagating mesoscale anticyclonic eddy under normal atmospheric conditions. Cross-eddy sections of density and shipboard acoustic Doppler current profiler data show the downward (upward phase) propagation of NIW packets with vertical wavelengths of 200 m within the eddy, and wave energy amplification in a critical vertical layer located near the base of the anticyclone. Elevated strain variance, enhanced turbulent kinetic energy dissipation rates obtained from a fine-scale parameterization, and the occurrence of low (≤1) gradient Richardson numbers are consistent with turbulence production and mixing from 400 m to at least the maximum sampling depth of 725 m associated with the trapped NIWs. The observation of NIW packets near the eddy base at two different stages of the survey separated by 10 days and the persistence of low to moderate winds before and during the eddy sampling strongly suggest that our findings may be common in similar open-ocean anticyclonic eddies under normal wind conditions.
URI: http://hdl.handle.net/10553/60001
ISSN: 2169-9275
DOI: 10.1029/2019JC015168
Source: Journal Of Geophysical Research-Oceans [ISSN 2169-9275],v. 124 (11), p. 8455-8467, (Noviembre 2019)
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