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	Provedor de dados 5 (1) Autor Broto, Karine (1) Exley, Russell J. K. (1) Gailler, Audrey (1) Ker, Stephan (1) Minshull, Tim A. (1) Plaza-faverola, Andreia (1) Westbrook, Graham K. (1) Mais... Palavra-chave Atlantic margin (1) Bearing sediments (1) Continental margins (1) Marine sediments (1) Mid norwegian margin (1) Reflection tomography (1) Storegga slide (1) Travel time tomography (1) Velocity models (1) Voring plateau (1) Mais... Tipo do documento Text (1) Ano 2010 (1) País France (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Evidence from three-dimensional seismic tomography for a substantial accumulation of gas hydrate in a fluid-escape chimney in the Nyegga pockmark field, offshore Norway 5 Plaza-faverola, Andreia; Westbrook, Graham K.; Ker, Stephan; Exley, Russell J. K.; Gailler, Audrey; Minshull, Tim A.; Broto, Karine. In recent years, it has become evident that features commonly called gas chimneys provide major routes for methane to pass through the methane-hydrate stability zone in continental margins and escape to the ocean. One of many such chimneys lying beneath pockmarks in the southeastern Voring Plateau off Norway was investigated with a high-resolution seismic experiment employing a 2-D array of sixteen 4-component ocean bottom seismic recorders at approximately 100 m separation and a dense network of shots to define the 3-D variation of the chimney's structure and seismic properties. The tomographic model derived from P wave travel times shows that P wave velocity inside the chimney is up to 300 m/s higher than in the surrounding strata within the... Tipo: Text Palavras-chave: Travel time tomography; Mid norwegian margin; Storegga slide; Bearing sediments; Voring plateau; Reflection tomography; Continental margins; Marine sediments; Atlantic margin; Velocity models. Ano: 2010 URL: http://archimer.ifremer.fr/doc/00012/12326/9111.pdf Registros recuperados: 1 Primeira ... 1 ... Última

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