FN Archimer Export Format PT J TI Circulation on the shelf and the upper slope of the Bay of Biscay BT AF LE BOYER, Arnaud CHARRIA, Guillaume LE CANN, Bernard LAZURE, Pascal MARIE, Louis AS 1:1;2:1;3:2,3;4:1;5:3; FF 1:PDG-ODE-DYNECO-PHYSED;2:PDG-ODE-DYNECO-PHYSED;3:;4:PDG-ODE-DYNECO-PHYSED;5:PDG-ODE-LPO; C1 IFREMER, Ctr Bretagne, DYNECO Physed, F-29280 Plouzane, France. Univ Bretagne Occidentale, UBO CNRS IRD IFREMER UMR6523, Lab Phys Oceans, F-29238 Brest, France. Ctr Bretagne, IFREMER, UBO CNRS IRD IFREMER UMR6523, Lab Phys Oceans, F-29280 Plouzane, France. C2 IFREMER, FRANCE UBO, FRANCE CNRS, FRANCE SI BREST SE PDG-ODE-DYNECO-PHYSED PDG-ODE-LPO IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 2.115 TC 20 TU Centre national de la recherche scientifique Institut de recherche pour le développement Institut français de recherche pour l'exploitation de la mer Université de Bretagne Occidentale UR https://archimer.ifremer.fr/doc/00139/24976/26395.pdf LA English DT Article CR ASPEX 2010A ASPEX1 ASPEX3 ASPEX4 CAROLS 2010 BO Le Suroît Thalassa Côtes De La Manche DE ;Bay of Biscay;Observation;Shelf and slope circulation;Vertical profile;ADCP;Wind driven circulation AB Here, we used measurements taken with an array of 10 acoustic Doppler current profilers deployed from July 2009 to August 2011 to describe the tidally filtered circulation over the shelf and upper slope on the French side off the French coasts of the Bay of Biscay. The measurements provided an overview of the shelf and slope circulation throughout the entire water column over a large range of spatial and time scales. The average circulation over the shelf and upper slope of the Bay of Biscay was poleward following the topography with a speed of the order of 3 cm s(-1). This average circulation had marked seasonal variability. In summer, the currents were equatorward on the outer shelf near surface. Deeper in the water column, the flow remained poleward. In winter, the intensity of the current increased in the north, while it reached its maximum in the south in autumn. On a weekly scale, this behaviour was associated with strong surface currents near the coast in the northern part of the domain in winter and strong currents affected the whole water column in the southern part of the domain in autumn. Correlations of the along-shore currents with wind suggest that wind stress drives almost half of the total observed circulation. We suggest that this forcing acts either directly via local winds or potentially by coastal-trapped waves generated by non-local winds. The potential remote forcing mechanism acts predominately in the southern Bay of Biscay when the wind blows eastward along the northern Spanish coast. (c) 2013 Elsevier Ltd. All rights reserved. PY 2013 PD MAR SO Continental Shelf Research SN 0278-4343 PU Pergamon-elsevier Science Ltd VL 55 UT 000317943800009 BP 97 EP 107 DI 10.1016/j.csr.2013.01.006 ID 24976 ER EF