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	Provedor de dados ArchiMer (2) Autor Stewart, Andrew L. (2) Adkins, Jess F. (1) Burke, Andrea (1) Ferrari, Raffaele (1) Gula, Jonathan (1) Jansen, Malte F. (1) Mcwilliams, James C. (1) Renault, Lionel (1) Solodoch, Aviv (1) Thompson, Andrew F. (1) Mais... Palavra-chave Last Glacial Maximum (1) Overturning circulation (1) Radiocarbon (1) Tipo do documento Text (2) Ano 2020 (1) 2015 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Why Does the Deep Western Boundary Current “Leak” around Flemish Cap? ArchiMer Solodoch, Aviv; Mcwilliams, James C.; Stewart, Andrew L.; Gula, Jonathan; Renault, Lionel. The southward flowing deep limb of the Atlantic Meridional Overturning Circulation is comprised of both the Deep Western Boundary Current (DWBC) and interior pathways. The latter are fed by “leakiness” from the DWBC in the Newfoundland Basin. However, the cause of this leakiness has not yet been explored mechanistically. Here the statistics and dynamics of the DWBC leakiness in the Newfoundland Basin are explored using two float data sets and a high-resolution numerical model. The float leakiness around Flemish Cap is found to be concentrated in several areas (“hotspots”) that are collocated with bathymetric curvature and steepening. Numerical particle advection experiments reveal that the Lagrangian mean velocity is offshore at these hotspots, while... Tipo: Text Ano: 2020 URL: https://archimer.ifremer.fr/doc/00630/74184/73787.pdf The glacial mid-depth radiocarbon bulge and its implications for the overturning circulation ArchiMer Burke, Andrea; Stewart, Andrew L.; Adkins, Jess F.; Ferrari, Raffaele; Jansen, Malte F.; Thompson, Andrew F.. Published reconstructions of radiocarbon in the Atlantic sector of the Southern Ocean indicate that there is amid-depth maximum in radiocarbon age during the Last Glacial Maximum (LGM). This is in contrast to the modern ocean where intense mixing between water masses results in a relatively homogenous radiocarbon profile. Ferrari et al. (2014) suggested that the extended Antarctic sea ice cover during the LGM necessitated a shallower boundary between the upper and lower branches of the meridional overturning circulation. This shoaled boundary lay above major topographic features associated with strong diapycnal mixing, isolating dense southern sourced water in the lower branch of the overturning circulation. This isolation would have allowed radiocarbon to... Tipo: Text Palavras-chave: Radiocarbon; Overturning circulation; Last Glacial Maximum. Ano: 2015 URL: https://archimer.ifremer.fr/doc/00497/60855/64245.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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