FN Archimer Export Format PT J TI An operational model to simulate post-accidental radionuclide transfers in Toulon marine area: preliminary development BT AF DUFFA, Celine DUFOIS, Francois COUDRAY, Sylvain AS 1:1;2:3;3:2; FF 1:;2:;3:PDG-ODE-LER-LERPAC; C1 IRSN (Institut de Radioprotection et Sureté Nucléaire), Centre IFREMER, Zone Portuaire du Brégaillon, 83507 La Seyne sur Mer, France Ifremer, Zone Portuaire du Brégaillon, 83507 La Seyne sur Mer, France Univ Cape Town, Mare Inst, Dept Oceanog, ZA-7701 Rondebosch, South Africa C2 IRSN, FRANCE IFREMER, FRANCE UNIV CAPE TOWN, SOUTH AFRICA SI TOULON SE IRSN PDG-ODE-LER-LERPAC IN WOS Ifremer jusqu'en 2018 copubli-france copubli-int-hors-europe copubli-sud IF 1.774 TC 9 UR https://archimer.ifremer.fr/doc/00053/16465/15998.pdf LA English DT Article DE ;Bay of Toulon;Radionuclides;Dispersion;MARS AB As part of its development of post-accident management tools, the French Institute for Radiological Protection and Nuclear Safety is setting up a model to simulate radionuclide dispersion in the Toulon marine area (one of France's main military ports). The model is based on the MARS 3D code developed by IFREMER. It reproduces hydro-sedimentation phenomena in the Bay of Toulon with a horizontal spatial resolution of 100 m and 30 vertical sigma levels and also factors in radioactive decay and dissolved/particulate distribution of the radionuclides studied. With no tide, the major currents in this area are generated by the wind. The model effectively reproduces the resulting hydrodynamic phenomena, which were measured throughout the summer of 2009 in the channel that links the Little Bay to the Large Bay of Toulon. When the Mistral (wind from the West/Northwest) blows, a surface current quickly appears, which pushes water southwards from the Little Bay, and which is offset by a bottom current (upwellings). When the wind blows from the East, the currents move in the opposite direction, and southeasterly waves, dependent on wind strength and fetch, occur in the Large Bay. Here, we give an example of the simulated dispersion of radionuclides released directly into the surface waters near the Arsenal, demonstrating the constraint relative to dispersion generated by the half-closed configuration of the Little Bay. Sediment in the Little Bay also forms an area where the most highly reactive radionuclides would accumulate, and where the lack of waves has the effect of considerably limiting the phenomena of resuspension. PY 2011 PD NOV SO Ocean Dynamics SN 1616-7341 PU Springer Heidelberg VL 61 IS 11 UT 000296638200007 BP 1811 EP 1821 DI 10.1007/s10236-011-0429-0 ID 16465 ER EF