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FLUXMANCHE radiotracers measurements: A contribution to the dynamics of the English Channel and North Sea

Abstract : From 1986 to 1992, 125Sb released by the nuclear fuel reprocessing plant at La Hague has been used to study the transfer of waters from mid-Channel areas towards the Straits of Dover. Since 1940, these investigations have formed part of the MAST 53 FLUXMANCHE programme and have involved repeated measurements on a Straits of Dover transect. A discussion of the results is presented here which takes into account new information provided by a hydrodynamic model developed in the framework of FLUXMANCHE; it combines knowledge of the monthly fluxes of water trough the Straits of Dover and week-by-week simulation of the 125Sb activities of waters flowing in this aera. It is proposed that soluble radionuclides introduced into the central Channel are transferred towards the Straits of Dover over a time which varies from four to seven months depending on the route taken.
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P. Guegueniat, P. Bailly Du Bois, J.C. Salomon, M. Masson, L. Cabioch. FLUXMANCHE radiotracers measurements: A contribution to the dynamics of the English Channel and North Sea. Journal of Marine Systems, Elsevier, 1995, 6 (5-6), pp.483-494. ⟨10.1016/0924-7963(95)00019-L⟩. ⟨hal-02433484⟩

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