Data/hora: 07/06/2024 02:19:31

Provedor de dados: | 5
País: | France
Título: | High frequency of sediment gravity flow events in the Var submarine canyon (Mediterranean Sea)
Autores: | Khripounoff, Alexis; Vangriesheim, Annick; Crassous, Philippe; Etoubleau, Joel.
Data: | 2009-07
Ano: | 2009
Palavras-chave: | West Mediterranean Sea; Particle flux; Var canyon; Hyperpycnal flow; Turbidity current.
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.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2009/publication-6640.pdf

DOI:10.1016/j.margeo.2009.03.014

Editor: | Elsevier
Relação: | http://archimer.ifremer.fr/doc/00000/6640/
Formato: | application/pdf
Fonte: | Marine Geology (0025-3227) (Elsevier), 2009-07 , Vol. 263 , N. 1-4 , P. 1-6
Fonte: | 2009 Elsevier Ltd All rights reserved.