|Author(s)||Khripounoff Alexis1, Vangriesheim Annick1, Crassous Philippe1, Etoubleau Joel2|
|Affiliation(s)||1 : IFREMER, Ctr Brest, Dept DEEP LEP, F-29280 Plouzane, France.
2 : IFREMER, Ctr Brest, Dept GM, F-29280 Plouzane, France.
|Source||Marine Geology (0025-3227) (Elsevier), 2009-07 , Vol. 263 , N. 1-4 , P. 1-6|
|WOS© Times Cited||52|
|Keyword(s)||West Mediterranean Sea, Particle flux, Var canyon, Hyperpycnal flow, Turbidity current|
|Abstract||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.|
Khripounoff Alexis, Vangriesheim Annick, Crassous Philippe, Etoubleau Joel (2009). High frequency of sediment gravity flow events in the Var submarine canyon (Mediterranean Sea). Marine Geology, 263(1-4), 1-6. Publisher's official version : https://doi.org/10.1016/j.margeo.2009.03.014 , Open Access version : https://archimer.ifremer.fr/doc/00000/6640/