Objective Radionuclides discharged from La Hague are used to trace advection and dispersion of water masses in the European Coastal Current from the English Channel to the entry of the Baltic. Time series of radionuclide measurements in water samples taken in the English Channel, at the Netherlands coast, in the German North Sea sector and in Danish waters are being performed. 3 fundamentally different numeric models are being developed in the programme. The 2-dimensional IFREMER model and the 3-dimensional BSH model are independent of the sampled data, whereas the Risoe box model is utilizing the data. Model simulations will be compared with collected database. The database will furthermore be made available as a model evaluation tool for other groups working with coastal water mass and contaminant advection and dispersion. Finally, the projects includes a first competent estimate of the prospects for using iodine-129 measured by accelerator man spectrometry (AMS) as a sensitive oceanographic tracer, and radiochemical work on improving and documenting the discrimination against disturbing impurities in the technetium-99 analytical procedure.PROJECT DESCRIPTION: Radionuclides discharged from La Hague will be used to trace transport and dispersal of coastal water masses. A time-series of radionuclide measurements in water samples taken in the English Channel at the Dutch coast, in the German North Sea sector and in Danish waters will be performed. Rates of water transport, dilution of the coastal currents with other water masses and transit times will be elucidated. Radionuclides ratios facilitate tracing of specific discharges in spite of dilution. This will contribute significantly to the knowledge of transit routes, transit times and mixing. The data will be used to improve models capable of describing the transport quantitatively. The results from the sampling programme will furthermore provide a unique data set for validating other models. Fields of science natural sciencescomputer and information sciencesdatabasessocial sciencessociologysocial issuessocial inequalitiesnatural scienceschemical sciencesnuclear chemistryradiation chemistry Programme(s) FP2-MAST 1 - Specific research and technological development programme (EEC) in the field of marine science and technology (MAST), 1989-1992 Topic(s) Data not available Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator RISOE NATIONAL LABORATORY Address Frederiksborgvej 399 Roskilde Denmark See on map EU contribution € 0,00 Participants (5) Sort alphabetically Sort by EU Contribution Expand all Collapse all CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE France EU contribution € 0,00 Address Université de paris-sud 11, 104 91405 Gometz la ville See on map Commissariat à l'Energie Atomique (CEA) France EU contribution € 0,00 Address Centre d'études de cadarache sere-ders 13113 Saint-paul-lez-durance See on map ENERGY RESEARCH CENTRE OF THE NETHERLANDS Netherlands EU contribution € 0,00 Address Westerduinweg 3 Petten See on map Links Website Opens in new window FEDERAL MARITIME AND HYDROGRAPHIC AGENCY Germany EU contribution € 0,00 Address Bernhard-nocht-strasse 78 20359 Hamburg See on map MAFF Fisheries Laboratory United Kingdom EU contribution € 0,00 Address NR33 0HT Lowestoft See on map
