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	Provedor de dados ArchiMer (2) Autor Cortijo, E (2) Labeyrie, L (2) Paillard, D (2) Chapman, M (1) Duplessy, Jc (1) Duprat, J (1) Keigwin, L (1) Lehman, S (1) Mais... Palavra-chave Composition isotopique de l’eau (1) Dernière période glaciaire (1) Heinrich events (1) Lust glacial periods (1) Rapid climatic variability (1) Sea water isotopic composition (1) Variabilité climatique rapide (1) Événements de Heinrich (1) Mais... Tipo do documento Text (2) Ano 2005 (1) 1999 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Heinrich events: hydrological impact ArchiMer Cortijo, E; Duplessy, Jc; Labeyrie, L; Duprat, J; Paillard, D. The hydrological impact of the massive iceberg discharges during Heinrich events has been quantified for Heinrich 4 about 37 kyr ago. This event took place in a context of relatively stable orbital forcing and global ice volume. In this article, we propose to quantify the hydrological impact of the Heinrich event 1 which occurred at about 16 kyr BP. This time period is particularly interesting because orbital forcing was strong and it marks the onset of the last deglaciation. The results obtained here show that Heinrich event 1 has a larger isotopic amplitude than Heinrich event 4 when considering the cores located near the melting source. Concerning surface circulation, the northward progression of the North Atlantic Drift is affected only by Heinrich... Tipo: Text Palavras-chave: Variabilité climatique rapide; Dernière période glaciaire; Composition isotopique de l’eau; Événements de Heinrich; Rapid climatic variability; Lust glacial periods; Sea water isotopic composition; Heinrich events. Ano: 2005 URL: https://archimer.ifremer.fr/doc/00232/34322/32714.pdf Changes in meridional temperature and salinity gradients in the North Atlantic Ocean (30 degrees-72 degrees N) during the last interglacial period ArchiMer Cortijo, E; Lehman, S; Keigwin, L; Chapman, M; Paillard, D; Labeyrie, L. Eight deep-sea sediment cores from the North Atlantic Ocean ranging from 31 degrees to 72 degrees N are studied to reconstruct the meridional gradients in surface hydrographic conditions during the interval of minimum ice volume within the last interglacial period. Using benthic foraminiferal delta(18)O measurements and estimates of Sea Surface Temperature (SST) and Sea Surface Salinity (SSS), we show that summer SSTs and SSSs decreased gradually during the interval of minimum ice volume at high-latitude sites (52 degrees-72 degrees N) whereas they were stable or increased during the same time period at low-latitude sites (31 degrees-41 degrees N). This increase in meridional gradients of SSTs and SSSs may have been due to changes in the latitudinal... Tipo: Text Ano: 1999 URL: https://archimer.ifremer.fr/doc/00240/35076/34550.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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