Ndoye S., Capet X., Brochier Timothée, Machu Eric, Brehmer Patrice. (2015). Dynamical functioning of the southern Senegal upwelling as a new explanation of small pelagic spawning pattern [résumé]. In :
PREFACE-PIRATA-CLIVAR Tropical Atlantic Variability Conference. [s.l.] : IRD, p. 67. PREFACE-PIRATA-CLIVAR Tropical Atlantic Variability Conference, Cape Town (ZAF), 2015/08/25-27 .
Titre du document
Dynamical functioning of the southern Senegal upwelling as a new explanation of small pelagic spawning pattern [résumé]
PREFACE-PIRATA-CLIVAR Tropical Atlantic Variability Conference, Cape Town (ZAF), 2015/08/25-27
In the south at part of the large marine ecosystem of the Canary Current, off Southern Senegal is situated a peculiar upwelling sector characterized by a major coastline irregularity in its northern part (the 'Cap-Vert' peninsula) and a wide continental shelf further South. The southern Senegal coastal Ocean plays a major role in the national ecosystem production. Its dynamical functioning is investigated using ROMS (regional oceanographic Oceanic Modeling System) numerical simulations at horizontal resolution ~ 2km, i.e. resolving fine-scale details of the frontal system present over the continental shelf during the upwelling season. The presence of Cap-Vert peninsula in the North exerts a major influence over the mesoscale activity, Ekman coastal divergence and upwelling patterns, and more generally over the pathways followed by cold subsurface water feeding the coastal divergence. Our dynamical analysis offers important new insight into the spawning
patterns of major exploited fish species observed in the region, e.g. during the recent surveys at sea.
Plan de classement
Dynamique des eaux [032DYNEAU]
;
Poissons [034BIOVER01]
