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	Provedor de dados ArchiMer (2) Autor Charlou, Jean-luc (2) Jean Baptiste, Philippe (2) Appriou, Pierre (1) Bougault, Henri (1) Dmitriev, Leonid (1) Fouquet, Yves (1) Fourre, Elise (1) German, Christopher (1) Needham, Hubert D (1) Radford Knoery, Joel (1) Rona, Peter A (1) Silantiev, Sergei (1) Vaslet, Nathalie (1) Mais... Palavra-chave Heat flux (1) Helium (1) Hydrothermal vents (1) Isotopes (1) Mid Atlantic Ridge (1) Tipo do documento Text (2) Ano 2004 (1) 1993 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Helium isotopes at the Rainbow hydrothermal site (Mid-Atlantic Ridge, 36 degrees 14 ' N) ArchiMer Jean Baptiste, Philippe; Fourre, Elise; Charlou, Jean-luc; German, Christopher; Radford Knoery, Joel. The He-3/He-4 ratio and helium concentration have been measured in the vent fluids and the dispersing plume of the Rainbow hydrothermal site, on the Mid-Atlantic Ridge (MAR). The He-3/He-4 ratio (7.51 R-a) and He-3 end-member concentration (25 pmol/kg) are in the range of observed values elsewhere on mid-ocean ridges, pointing to the relative homogeneity of the upper mantle with respect to helium isotope geochemistry. He-3 is linearly correlated with methane and manganese throughout the plume, with CH4/He-3 and Mn/He-3 ratios identical to those measured in the hot fluids. The bulk residence time of the plume in the rift valley estimated from the plume He-3 budget is similar to20 days. The He-3 flux transported by the plume, calculated from current-meter... Tipo: Text Palavras-chave: Mid Atlantic Ridge; Heat flux; Isotopes; Hydrothermal vents; Helium. Ano: 2004 URL: https://archimer.ifremer.fr/doc/2004/publication-772.pdf Fast and slow spreading ridges: structure and hydrothermal activity - Ultramafic Topographic Highs and CH4 output ArchiMer Bougault, Henri; Charlou, Jean-luc; Fouquet, Yves; Needham, Hubert D; Vaslet, Nathalie; Appriou, Pierre; Jean Baptiste, Philippe; Rona, Peter A; Dmitriev, Leonid; Silantiev, Sergei. Tipo: Text Ano: 1993 URL: http://archimer.ifremer.fr/doc/00070/18116/15664.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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