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	Provedor de dados ArchiMer (3) Autor Capuano, Tonia Astrid (3) Carton, Xavier (2) Speich, Sabrina (2) Blanke, Bruno (1) Laxenaire, Remi (1) Palavra-chave Indo-Atlantic exchange (3) AAIW (1) Cape Basin water masses (1) Dynamiques des masses d’eau (1) Eddy dynamics (1) Meso- and submesoscale dynamics (1) Meso- and submesoscale processes (1) Processus de méso- et sous-méso- échelle (1) Water masses dynamics (1) Échange Indo-Atlantique (1) Mais... Tipo do documento Text (3) Ano 2018 (2) 2017 (1) País France (3) Idioma Inglês (2) Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Dynamiques océaniques à petite échelle dans le Bassin du Cap et leur impact sur la circulation régionale ArchiMer Capuano, Tonia Astrid. This study addresses the role of oceanic small-scale processes in the formation and transformation of subsurface waters that participate in the Indo-Atlantic interocean exchange.We focus on the Cape Basin dynamics, characterized by a highly non-linear turbulence.We provide qualitative and quantitative evidence of the direct impact that meso- and submesoscale structures, their dynamical interactions and their seasonal variability have on the local thermocline and intermediate waters. A sequence of numerical simulations, ranging from ’eddy-permitting’ to ’submesoscale resolving’, underlines the importance of an adequate vertical resolution to correctly depict the water masses properties.We point out that Agulhas eddies are mainly generated through baroclinic... Tipo: Text Palavras-chave: Processus de méso- et sous-méso- échelle; Échange Indo-Atlantique; Dynamiques des masses d’eau; Meso- and submesoscale processes; Indo-Atlantic exchange; Water masses dynamics. Ano: 2017 URL: https://archimer.ifremer.fr/doc/00497/60903/64251.pdf Mesoscale and Submesoscale Processes in the Southeast Atlantic and Their Impact on the Regional Thermohaline Structure ArchiMer Capuano, Tonia Astrid; Speich, Sabrina; Carton, Xavier; Blanke, Bruno. The turbulent processes in the Cape Basin, the southeasternmost gate of the Atlantic Ocean, play a key role in the transport and mixing of upper to intermediate water masses entering the area from the Indian Ocean, making them especially relevant for the Indo-Atlantic transfer of heat and salt. In this paper, two numerical simulations at different horizontal resolutions are used to study mesoscale and submesoscale dynamics, their phenomenology, their evolution, and their impact on the local water masses. Submesoscale processes seasonally affect both, the upper and intermediate layers, but there are clear dynamical differences between the two layers. Several types of instabilities underline this spatial and temporal variability. Near the surface, mixed... Tipo: Text Palavras-chave: Meso- and submesoscale dynamics; Cape Basin water masses; Indo-Atlantic exchange. Ano: 2018 URL: https://archimer.ifremer.fr/doc/00600/71247/69618.pdf Indo-Atlantic Exchange, Mesoscale Dynamics, and Antarctic Intermediate Water ArchiMer Capuano, Tonia Astrid; Speich, Sabrina; Carton, Xavier; Laxenaire, Remi. This study evaluates the capability of eddy-permitting regional ocean models to reproduce the interocean exchange south of Africa. In this highly turbulent region, we show that the vertical structure of the horizontal flows need to be appropriately resolved to realistically advect thermocline water masses into the South Atlantic. Our results point out that a grid-spacing of 1/24 degrees on the horizontal and 50 m on the vertical homogeneously distributed are required to account for a correct transport of surface and subsurface water masses properties and their in-route transformation by mixing. Preliminary Lagrangian analyses highlight the primary role of the upper-ocean mesoscale eddies on water masses transport and fate, with a particular emphasis on... Tipo: Text Palavras-chave: Eddy dynamics; Indo-Atlantic exchange; AAIW. Ano: 2018 URL: https://archimer.ifremer.fr/doc/00600/71245/69616.pdf Registros recuperados: 3 Primeira ... 1 ... Última

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