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	Provedor de dados ArchiMer (2) Autor Bareille, Gilles (1) Labeyrie, Laurent (1) Labracherie, Monique (1) Lemoine, Flavien (1) Manthe, Sandrine (1) Maze, Guillaume (1) Salvignac, Marie-eve (1) Mais... Palavra-chave Océan Austral (2) Southern Ocean (2) Annular mode (1) Basse fréquence (1) Climat (1) Ice-rafted-detritus (1) Icebergs (1) Interactions océan-atmosphère (1) Low frequency (1) Mineralogy (1) Minéralogie (1) Mode annulaire (1) Ocean-atmosphere interactions (1) Particules détritiques (1) Variability (1) Variabilité (1) Mais... Tipo do documento Text (2) Ano 2006 (1) 2000 (1) País France (2) Idioma Francês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Variabilité et origine des apports détritiques dans le secteur indien de l'océan Austral au cours des derniers 30 000 ans ArchiMer Manthe, Sandrine; Bareille, Gilles; Salvignac, Marie-eve; Labracherie, Monique; Lemoine, Flavien; Labeyrie, Laurent. The surface water circulation variability in the southeastern Indian Sector has been investigated using micropalaeontological and isotopic analysis in a deep-sea core located near the Subantarctic Front. The frequency and intensity of iceberg and meltwater discharges have been studied by counting detrital grains >45 mu m, by determining their mineralogical composition, and by measuring delta(18)O in the planktonic foraminifera Neogloboquadrina pachyderma sinistral. The variability of hydrologic fronts was determined by estimating the sea surface temperatures (SST) using the Imbrie and Kipp foraminifera transfer function. Four iceberg discharge events were determined between 24 and 12 ka C-14 BP during the last glacial stage. Distinct but low magnitude... Tipo: Text Palavras-chave: Océan Austral; Particules détritiques; Minéralogie; Icebergs; Southern Ocean; Ice-rafted-detritus; Mineralogy; Icebergs. Ano: 2000 URL: http://archimer.ifremer.fr/doc/00220/33162/31670.pdf Interactions basses fréquences océan-atmosphère dans l’océan Austral ArchiMer Maze, Guillaume. Patterns of interannual variability of the ocean- atmosphere coupled system in the Southern Hemisphere ex- tratropics are studied with a simple dynamical model, in or- der to determine the basic physical processes of interaction independently of tropical forcing. The model used is an at- mospheric quasi-geostrophic model coupled to a "slab" oceanic mixed layer, which includes mean geostrophic advection by the Antarctic Circumpolar Current (ACC). The ocean-atmosphere coupling occurs through surface heat fluxes and Ekman cur- rent heat advection. In a fully coupled simulation, the atmos- pheric part of the model, which includes high frequency tran- sient eddies at midlatitudes, exhibits a strong Southern Annu- lar Mode (SAM) as the first mode of variability... Tipo: Text Palavras-chave: Climat; Océan Austral; Mode annulaire; Basse fréquence; Interactions océan-atmosphère; Variabilité; Climat; Southern Ocean; Annular mode; Low frequency; Ocean-atmosphere interactions; Variability. Ano: 2006 URL: http://archimer.ifremer.fr/doc/00186/29734/28147.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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