MEAD (part II)-Predictions of radioactivity concentrations in the Irish Sea.

The predictions from MEAD, a model that simulates the transport of radionuclides in the marine environment, are presented for the Irish Sea. MEAD predictions for (137)Cs and Pu(alpha) are presented following discharges from BNFL Sellafield and the predictions compared to measured data from near the discharge location and further a field in the Irish Sea. The model performs well in most circumstances given the uncertainties involved in both modelling and data collection although some inconsistencies in the predictions are found. MEAD is also compared to other models of radionuclide transport in the Irish Sea.

[1]  G. Round,et al.  Predictions of Radionuclide Dose Rates from Sellafield Discharges using a Compartmental Model , 1998 .

[2]  M. G. Lyons,et al.  Developments in the Cumbria Model and its Application to Radiological Assessment in the Irish Sea , 1998 .

[3]  R. Periáñez Modelling the physico-chemical speciation of plutonium in the eastern Irish Sea: a further development. , 2000, Journal of environmental radioactivity.

[4]  P. McDonald,et al.  MEAD (part I)--a mathematical model of the long-term dispersion of radioactivity in shelf sea environments. , 2003, Journal of environmental radioactivity.

[5]  G. J. Hunt,et al.  Remobilisation of artificial radionuclides from the sediment of the Irish Sea , 1990 .

[6]  C. Myttenaere,et al.  Application of distribution coefficients to radiological assessment models , 1986 .

[7]  R. Periáñez,et al.  Three-dimensional modelling of the tidal dispersion of non-conservative radionuclides in the marine environment. Application to 239,240Pu dispersion in the eastern Irish Sea , 1999 .

[8]  R. Pentreath,et al.  The incorporation of plutonium, americium and curium into the Irish Sea seabed by biological activity , 1984 .

[9]  S. Malcolm,et al.  The interstitial water chemistry of 239,240Pu and 241Am in the sediments of the north-east Irish Sea , 1990 .

[10]  P. McDonald,et al.  Remobilization of Sellafield-derived radionuclides and transport from the north-east Irish Sea , 1997 .

[11]  R. Periáñez Three-dimensional modelling of the tide-induced dispersion of radionuclides in the sea , 1998 .

[12]  Reconstructing historical radionuclide concentrations along the east coast of Ireland using a compartmental model. , 2000, The Science of the total environment.

[13]  R. Lewis,et al.  Dispersion in Estuaries and Coastal Waters , 1997 .

[14]  J. Vives i Batlle,et al.  The availability of plutonium and americium in Irish Sea sediments for re-dissolution. , 2001, The Science of the total environment.

[15]  J. N. Aldridge CSERAM: A Model for Prediction of Marine Radionclide Transport in both Particulate and Dissolved Phases , 1998 .

[16]  C. W. Gear,et al.  Numerical initial value problem~ in ordinary differential eqttations , 1971 .

[17]  D. Mccubbin,et al.  The role of thermal and photochemical reactions upon the remobilisation of Pu from an Irish Sea sediment , 1999 .

[18]  P. Blowers,et al.  Dissolved plutonium and americium in surface waters of the Irish Sea, 1973–1996 , 1999 .

[19]  R. Periáñez A three dimensional σ-coordinate model to simulate the dispersion of radionuclides in the marine environment : application to the Irish Sea , 1998 .