Mesoscale hydrological variability induced by northwesterly wind on the French continental shelf of the Bay of Biscay

Type Article
Date 2006-06
Language English
Author(s) Puillat I1, Lazure PascalORCID1, Jegou Anne-Marie1, Lampert LuisORCID1, 2, Miller P3
Affiliation(s) 1 : IFREMER, Dyneco, Physed, F-29280 Plouzane, France.
2 : EPSHOM, F-29275 Brest, France.
3 : Plymouth Marine Lab, Plymouth PL1 3DH, Devon, England.
Source Scientia Marina (0214-8358) (Institut de Ciències del Mar de Barcelona, CSIC), 2006-06 , Vol. 70 , N. 1 , P. 15-26
WOS© Times Cited 31
Keyword(s) River plume, Upwelling, Lens, Mesoscale, Salinity
Abstract On the French continental shelf of the Bay of Biscay the variability of the surface salinity distribution has been mainly investigated at the seasonal and inter-annual scales. Here, new mesoscale features such as lower-salinity lenses observed in model results are investigated by hydrological measurements acquired during 8 cruises (1997-2000). These lenses are 50-80 km wide and similar to 30 m thick and occur during westerly to northerly wind events that push offshore the less saline water of river Plumes. These water masses detached from the coast are replaced with upwelled saltier water at the coast, so coastal upwelling is often observed at the same time along Landes and southern Brittany coasts. We show that in addition to the influence of seasonal and inter-annual variability of the wind and river outflows, short term meteorological variability may drive mesoscale structures on this continental shelf.
Full Text
File Pages Size Access
publication-3958.pdf 12 2 MB Open access
Top of the page

How to cite 

Puillat I, Lazure Pascal, Jegou Anne-Marie, Lampert Luis, Miller P (2006). Mesoscale hydrological variability induced by northwesterly wind on the French continental shelf of the Bay of Biscay. Scientia Marina, 70(1), 15-26. Open Access version : https://archimer.ifremer.fr/doc/00000/3958/