FN Archimer Export Format
PT J
TI Sediment dynamics in the Gulf of Lion (NW Mediterranean Sea) during two autumn-winter periods with contrasting meteorological conditions
BT 
AF Estournel, Claude
   Mikolajczak, Guillaume
   Ulses, Caroline
   Bourrin, François
   Canals, Miquel
   Charmasson, Sabine
   Doxaran, David
   Duhaut, Thomas
   Durrieu de Madron, Xavier
   Marsaleix, Patrick
   Palanques, Albert
   Puig, Pere
   Radakovitch, Olivier
   Sanchez-Vidal, Anna
   Verney, Romaric
AS 1:1;2:1;3:1;4:2;5:3;6:4;7:5;8:1;9:2;10:1;11:6;12:6;13:4;14:3;15:7;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;14:;15:PDG-ODE-DYNECO-DHYSED;
C1 LEGOS, Université de Toulouse, CNES/CNRS/IRD/UT3, 14 avenue Edouard Belin, 31400 Toulouse, France
   CEFREM, CNRS, Université de Perpignan Via Domitia, 52 Avenue Paul Alduy, 66860 Perpignan, France
   GRC, Marine Geosciences, Department of Earth and Marine Dynamics, Faculty of Earth Sciences, University of Barcelona, Martí i Franquès s/n, E-08028 Barcelona, Spain
   Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSE-ENV/SRTE/LRTA, BP 13, F-13115 Saint-Paul-Les-Durance, France
   LOV, Sorbonne Université, CNRS, 181 Chemin du Lazaret, 06230 Villefranche-sur-Mer, France
   Marine Sciences Institute, Consejo Superior de Investigaciones Científicas, Barcelona 08003, Spain
   IFREMER, DYNECO/DHYSED, ZI Pointe du Diable, 29280 Plouzané, France
C2 UNIV TOULOUSE, FRANCE
   UNIV PERPIGNAN, FRANCE
   UNIV BARCELONA, SPAIN
   IRSN, FRANCE
   UNIV SORBONNE, FRANCE
   CSIC, SPAIN
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-DYNECO-DHYSED
IN WOS Ifremer UPR
   copubli-france
   copubli-europe
   copubli-univ-france
IF 4.1
TC 4
UR https://archimer.ifremer.fr/doc/00811/92256/98283.pdf
LA English
DT Article
CR CASCADE
BO L'Atalante
DE ;Sediment transport;Continental shelf;Submarine canyons;Storms;Cascading;Flood;Northwestern Mediterranean Sea;Gulf of Lion;Rhone river
AB A simulation based on a hydro-sedimentary model was conducted for the period between summer 2010 and spring 2012 in the Gulf of Lion (northwestern Mediterranean Sea) to understand the spatial and temporal variability of sediment transport, erosion and deposition on the continental shelf and slope. Datasets of both simulated and observed current, temperature and suspended matter from the shelf and the Cap de Creus Canyon which is the main export route towards the continental slope, were first compared to assess the reliability of the simulation. The simulation shows the massive sediment accumulation near the Rhone River mouth (∼ 56% of the inputs), the accretion along the mid-shelf mud belt, and the impact of dense shelf water cascading on sediment resuspension and erosion inside the Cap de Creus Canyon. The two studied autumn-winter periods were strongly contrasted in terms of meteorological conditions and subsequent impacts on the sediment dynamics. During the first period (2010–2011) dominated by marine storms, the shelf sediment underwent strong changes, the Rhone River sediment load accumulated in a relatively small area, stock of littoral sands moved to the inner shelf (20–40 m) while inner shelf fine particles fed the mid-shelf mud belt and the upper Cap de Creus Canyon. During the second period (2011–2012) with very little marine wind and a particularly cold winter, sediment on the shelf underwent little change except for a southwestward growth of the Rhone River prodeltaic deposit. Sediment from the southwestern end of the shelf as well as from the upper Cap de Creus Canyon was flushed toward deeper reaches by dense shelf water cascading. Cascading also had a more moderate impact in the various canyons incising the continental shelf. Our work supports the view of an unbalanced sedimentary system, with a deficit mainly over the inner shelf, whose main driver is probably the strong and fast reduction of particulate matter inputs from the Rhone River (by a factor of 4 in less than one century). 
PY 2023
PD JAN
SO Progress In Oceanography
SN 0079-6611
PU Elsevier BV
VL 210
UT 000906949800001
DI 10.1016/j.pocean.2022.102942
ID 92256
ER

EF