| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
High frequency of sediment gravity flow events in the Var submarine canyon (Mediterranean Sea)
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| Autores: |
Khripounoff, Alexis
Vangriesheim, Annick
Crassous, Philippe
Etoubleau, Joel
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| Data: |
2009-07
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| Ano: |
2009
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| Palavras-chave: |
West Mediterranean Sea
Particle flux
Var canyon
Hyperpycnal flow
Turbidity current
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| Resumo: |
This study aimed to analyze the role river floods play in triggering gravity flows and to investigate the role of submarine canyon systems as a conduit for terrigenous material to the deep sea. Two years of measurements in the Var canyon at depths ranging from 1200 m to 2350 m indicate that six floods of the Var River triggered hyperpycnal flows, an important mechanism for transporting particulate matter to the deep-sea floor. These sediment gravity flows were characterized by a sudden increase of current velocity that lasted 8 to 22 h and by downward particle fluxes that reached up to 600 g m(-2)d(-1) of particles and 3.1 g m(-2)d(-1) in terms of organic carbon. These large inputs of sediment and organic carbon may have a significant impact on deep-sea ecosystems and carbon storage in the Mediterranean Sea.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/2009/publication-6640.pdf
DOI:10.1016/j.margeo.2009.03.014
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| Editor: |
Elsevier
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| Relação: |
http://archimer.ifremer.fr/doc/00000/6640/
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| Formato: |
application/pdf
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| Fonte: |
Marine Geology (0025-3227) (Elsevier), 2009-07 , Vol. 263 , N. 1-4 , P. 1-6
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| Direitos: |
2009 Elsevier Ltd All rights reserved.
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