Obiettivo 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. Campo scientifico natural sciencescomputer and information sciencesdatabasessocial sciencessociologysocial issuessocial inequalitiesnatural scienceschemical sciencesnuclear chemistryradiation chemistry Programma(i) FP2-MAST 1 - Specific research and technological development programme (EEC) in the field of marine science and technology (MAST), 1989-1992 Argomento(i) Data not available Invito a presentare proposte Data not available Meccanismo di finanziamento CSC - Cost-sharing contracts Coordinatore RISOE NATIONAL LABORATORY Contributo UE Nessun dato Indirizzo Frederiksborgvej 399 ROSKILDE Danimarca Mostra sulla mappa Costo totale Nessun dato Partecipanti (5) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE Francia Contributo UE Nessun dato Indirizzo Université de Paris-sud 11, 104 91405 GOMETZ LA VILLE Mostra sulla mappa Costo totale Nessun dato Commissariat à l'Energie Atomique (CEA) Francia Contributo UE Nessun dato Indirizzo Centre d'Études de Cadarache Sere-Ders 13113 SAINT-PAUL-LEZ-DURANCE Mostra sulla mappa Costo totale Nessun dato ENERGY RESEARCH CENTRE OF THE NETHERLANDS Paesi Bassi Contributo UE Nessun dato Indirizzo Westerduinweg 3 PETTEN Mostra sulla mappa Collegamenti Sito web Opens in new window Costo totale Nessun dato FEDERAL MARITIME AND HYDROGRAPHIC AGENCY Germania Contributo UE Nessun dato Indirizzo Bernhard-Nocht-Strasse 78 20359 HAMBURG Mostra sulla mappa Costo totale Nessun dato MAFF Fisheries Laboratory Regno Unito Contributo UE Nessun dato Indirizzo NR33 0HT Lowestoft Mostra sulla mappa Costo totale Nessun dato