FN Archimer Export Format
PT C
TI Numerical modelling of heterogeneous sediment transport: new insights for particulate radionuclide transport and deposition
BT 
AF RIVIER, Aurélie
   LE HIR, Pierre
   Bailly du Bois, Pascal
   Laguionie, Philippe
   Morillon, Mehdi
AS 1:1,2;2:2;3:1;4:1;5:1;
FF 1:;2:PDG-ODE-DYNECO-DHYSED;3:;4:;5:;
C1 Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PRP - ENV/SERIS/LRC, 50130 Cherbourg - Octeville, France
   Ifremer, Centre de Bretagne, DYNECO/DHYSED, CS 10070, 29280 Plouzané, France
C2 IRSN, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-DYNECO-DHYSED
UR https://archimer.ifremer.fr/doc/00394/50580/51274.pdf
LA English
DT Proceedings paper
CR TRACES
   TRACES 2015
BO Côtes De La Manche
DE ;sediment transport;numerical modelling;hiding;exposure;bedload;suspension
AB A sediment transport module which solves simultaneously bedload and suspended load is developed, in a context of multiclass sediment transport. Different approaches are used to simulate each transport mode: (i) bedload transport results from divergence of transport capacity and (ii) suspension transport is solved using erosion and settling fluxes associated with advection/diffusion equation. A focus is made on the significance of hiding and exposure processes in case of heterogeneous sediment bed. Their influence is strong on bedload sediment transport, and induces specific trends of sediment sorting in sand dunes. The application to heterogeneous sediment dynamics in the macrotidal area of the Normand Breton Gulf (English Channel), show that hiding and exposure processes enhance the trapping of fine sediments (p articles <64 μm, on which radionuclides are likely to adsorb) in locations where coarsest sediments are dominant. 
PY 2017
CT Proceedings of Coastal Dynamics 2017. Troels Aagaard, Rolf Deigaard, David Fuhrman. Part 26 Modelling of coastal sediment transport. Paper n°161. pp.1767-1778
ID 50580
ER

EF