Impact of dense shelf water cascading on the transfer of organic matter to the deep western Mediterranean basin

[1] During winter 2005–2006, particle fluxes and nearbottom currents were measured in and around the LacazeDuthiers and Cap de Creus submarine canyons (western Gulf of Lion). Current anomalies show the occurrence of a major dense shelf water cascading event down to the slope, the latest recorded up to date in the area. Concomitant increased total mass fluxes highlight the ability of cascading waters to transport large amounts of coarse sediment and organic matter, which is predominantly of terrestrial origin. In addition, results reveal that the current regime and associated grain size sorting is the responsible for a geochemical gradient of settling organic particles along the slope. Citation: Sanchez-Vidal, A., C. Pasqual, P. Kerhervé, A. Calafat, S. Heussner, A. Palanques, X. Durrieu de Madron, M. Canals, and P. Puig (2008), Impact of dense shelf water cascading on the transfer of organic matter to the deep western Mediterranean basin, Geophys. Res. Lett., 35, L05605, doi:10.1029/2007GL032825.