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	Provedor de dados ArchiMer (2) Autor Condrey, Richard E. (1) De Batist, M (1) Dubois, Stanislas (1) Fleeger, John W. (1) Gelpi, Carey (1) Grippo, Mark A. (1) Marsset, Tania (1) Plagnol, Clara (1) Reynaud, Jean-yves (1) Tessier, Bernadette (1) Mais... Palavra-chave Sand bank (2) Biodiversity hotspot (1) Celtic Sea (1) Channels (1) Continental shelf (1) Dunes (1) Gulf of Mexico (1) Hypoxia refuge (1) Louisiana (1) Shallow habitat (1) Tidal dynamics (1) Very high-resolution seismics (1) Mais... Tipo do documento Text (2) Ano 2009 (1) 1999 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última The Celtic Sea banks: an example of sand body analysis from very high-resolution seismic data ArchiMer Marsset, Tania; Tessier, Bernadette; Reynaud, Jean-yves; De Batist, M; Plagnol, Clara. Very high-resolution seismic data from the Kaiser-I-Hind sand bank (southern Celtic Sea) recently highlighted the internal structure of the enigmatic Celtic Banks, which are among the deepest and largest shelf sand ridges. The main body of the bank is made up of 4 seismic/depositional units which reflect a transgressive evolution. New data on the detailed architecture of two of these units allow discussion of bank growth in terms of either (1) a channel–levee system preserved both by lateral migration and aggradation of the channels, or (2) a package of large offshore tidal sediment bodies (bar chains and/or giant dunes). Careful geometrical observations of seismic discontinuities make the second hypothesis more likely. The unit architecture is analysed in... Tipo: Text Palavras-chave: Sand bank; Tidal dynamics; Dunes; Channels; Celtic Sea; Very high-resolution seismics. Ano: 1999 URL: http://archimer.ifremer.fr/doc/00061/17192/14693.pdf Diversity and composition of macrobenthic community associated with sandy shoals of the Louisiana continental shelf ArchiMer Dubois, Stanislas; Gelpi, Carey; Condrey, Richard E.; Grippo, Mark A.; Fleeger, John W.. Along the Louisiana, USA continental shelf, sandy shoals are shallow, possibly oxygen-rich "islands" surrounded by deeper muddy deposits prone to hypoxia. Shoals also contain significant quantities of fine sand that may be mined in the future for coastal restoration. The ecological role of shoals remains poorly understood and we hypothesized that shoals provide critical habitat for benthic invertebrates. Using Ship Shoal as a model system, we assessed the diversity and structure of macrobenthic assemblages and how community structure varies with season and environmental parameters. High biomass (averaging 26.7 g m(-2)) and high diversity (161 species) of macrobenthos was found in 2006. Polychaetes (45%-72 species) and crustaceans comprised most of the... Tipo: Text Palavras-chave: Shallow habitat; Sand bank; Louisiana; Hypoxia refuge; Gulf of Mexico; Continental shelf; Biodiversity hotspot. Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6975.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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