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	Provedor de dados ArchiMer (1) Autor Bourillet, Jean-francois (1) Cauquil, E (1) Cochonat, Pierre (1) Foucher, Jean-paul (1) Grauls, D (1) Ondreas, Helene (1) Sultan, Nabil (1) Tonnerre, T (1) Mais... Palavra-chave Continental margins (1) Finite difference (1) Gas hydrate (1) Heat flow (1) Seafloor reflectivity (1) Stefan problem (1) Temperature (1) Mais... Tipo do documento Text (1) Ano 2004 (1) País France (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Dynamics of gas hydrate: case of the Congo continental slope ArchiMer Sultan, Nabil; Foucher, Jean-paul; Cochonat, Pierre; Tonnerre, T; Bourillet, Jean-francois; Ondreas, Helene; Cauquil, E; Grauls, D. A numerical model is developed to study the temperature effect on stability and phase transformation of gas-hydrate. The model uses a mathematical formulation based on the enthalpy form of the conservation law of energy. The use of the enthalpy form instead of the temperature form as often done in the literature has made the problem numerically simpler. The model is then applied to describe the effect of sea bottom temperature variations on the stability of gas hydrate occurrences and on the seafloor reflectivity in sediments of the Congo continental slope. Indeed, a migrating seafloor reflectivity front is observed on 3D seimic images from two surveys performed 6 months apart and interpreted as a migrating gas hydrate stability zone. Seawater temperature... Tipo: Text Palavras-chave: Temperature; Stefan problem; Seafloor reflectivity; Gas hydrate; Heat flow; Finite difference; Continental margins. Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-702.pdf Registros recuperados: 1 Primeira ... 1 ... Última

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