Working Paper Review Version 1 This version is not peer-reviewed

Dissolved Artificial Radionuclides and Numerical Modelling for Coastal Seas Dispersion Studies: Data, Methods and Applications

Version 1 : Received: 23 January 2020 / Approved: 24 January 2020 / Online: 24 January 2020 (16:03:50 CET)

How to cite: Bailly du Bois, P.; Dumas, F.; Voiseux, C.; Morillon, M.; Oms, P.; Solier, L. Dissolved Artificial Radionuclides and Numerical Modelling for Coastal Seas Dispersion Studies: Data, Methods and Applications. Preprints 2020, 2020010290 Bailly du Bois, P.; Dumas, F.; Voiseux, C.; Morillon, M.; Oms, P.; Solier, L. Dissolved Artificial Radionuclides and Numerical Modelling for Coastal Seas Dispersion Studies: Data, Methods and Applications. Preprints 2020, 2020010290

Abstract

Significant amounts of anthropogenic radionuclides were introduced in ocean waters following nuclear atmospheric tests and development of the nuclear industry. Dispersion of artificial dissolved radionuclides has been extensively measured for decades over the European continental shelf. The radionuclide measurement and release fluxes databases provided here represent an exceptional opportunity to validate dispersion hydrodynamic models. MARS hydrodynamic model have been applied at different scales to reproduce in realistic conditions the measured dispersion. Specific methods have been developed to obtain qualitative and quantitative results and perform model/measurement comparisons. Model validation concerns short to large scales with dedicated surveys following the dispersion: it was performed within two and three dimensions framework and from minutes and hours following a release up to several years. Results are presented concerning the dispersion of radionuclides in marine systems deduced from standalone measurements, or according to model comparisons. It allows characterising dispersion over the continental shelf, pathways, transit times, budgets and source terms. This review exhibits the main features retained from the point of view of radiotracers, hydrodynamic models and model/measurement methods with perspectives of applications in other areas or oceanographic domains.

Supplementary and Associated Material

https://doi.pangaea.de/10.1594/PANGAEA.906749: IRSN measurements of dissolved radioactivity in seawater, 1982-2016, including liquid releases database issued from British and French nuclear plants

Subject Areas

radionuclide; tracer; data collection; antimony 125 (125Sb), tritium (3H), dispersion; modelling; English Channel; North Sea; Biscay Bay

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