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| Legeais, Jean-francois; Ollitrault, Michel; Arhan, Michel. |
| Subsurface float measurements at 800 m depth carried out from 1994 to 2003 in the Brazil Basin are used to characterise the equatorward Intermediate Western Boundary Current (IWBC) and its connections to the ocean interior. Transversally, the boundary flow is less than 100 km wide, and most intense at 10-20 km from the 800 m isobath. Its average velocities range from similar to 0.1 ms(-1) to 0.3 ms(-1) depending on latitude, with individual daily values as high as 0.7 ms(-1). The flow meridional extent exhibits 3 contrasted domains: (i) from 27 degrees S to the Vitoria-Trindade Ridge at 20 degrees 30'S, the boundary flow intensifies northward along a relatively smooth topography. A counter current adjacent to it on its seaward side feeds it with... |
| Tipo: Text |
Palavras-chave: Brazil basin; Intermediate water; Western boundary current. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00134/24561/22690.pdf |
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| Krug, M.; Swart, S.; Gula, J.. |
| Gliders were deployed for the first time in the Agulhas Current region to investigate processes of interactions between western boundary currents and shelf waters. Continuous observations from the gliders in water depths of 100-1000m and over a period of 1month provide the first high-resolution observations of the Agulhas Current's inshore front. The observations collected in a nonmeandering Agulhas Current show the presence of submesoscale cyclonic eddies, generated at the inshore boundary of the Agulhas Current. The submesoscale cyclones are often associated with warm water plumes, which extend from their western edge and exhibit strong northeastward currents. These features are a result of shear instabilities and extract their energy from the mean... |
| Tipo: Text |
Palavras-chave: Western boundary current; Coastal and shelf; Sub-mesoscale; Agulhas Current; Ocean gliders; Instabilities. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00376/48687/69640.pdf |
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| Gasparin, Florent; Maes, Christophe; Sudre, Joel; Garcon, Veronique; Ganachaud, Alexandre. |
| A water mass analysis of the Coral Sea thermocline waters provides a description of their distribution, pathways and mixture based on recent oceanographic cruises in this region of strong western boundary currents. The Optimum Multiparameter method is used to determine the relative contribution of core water masses based on their measured temperature, salinity and dissolved oxygen. The thermocline waters, carried by the broad South Equatorial Current (SEC), are essentially composed of four core water masses of different origins. Coming from the south, the South Pacic Tropical Water South (SPTWS, σ=25.3 kg.m−3) and the Western South Pa-cic Central Water (WSPCW, σ=26.3 kg.m−3) enter the Coral Sea by the channel between the island of New Caledonia and the... |
| Tipo: Text |
Palavras-chave: Thermocline water masses; Optimal Multiparameter analysis; Southwest Pacific Ocean; Western boundary current. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00220/33147/31619.pdf |
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