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A 2D 4-phases marine dispersion model for non-conservative radionuclides: Part. 1. Conceptual and computational model



A 2D 4-phases marine dispersion model for non-conservative radionuclides: Part. 1. Conceptual and computational model



Journal of Environmental Radioactivity 20(2): 71-88



Modelling the dispersion of non-conservative radionuclides in a given marine environment involves a wide set of complex processes: horizontal water movements (advection and diffusion), suspended matter dynamics, sediment composition, accumulation or erosion rates, continental water input and its dispersion pattern, evaporation-precipitation balance and the ionic exchange among the different phases. In this paper we present the conceptual and computational basis of a mathematical model which includes all the above processes. This model has been developed in different stages, in such a way that every new step includes the previously validated model and is subject to a further validation. Here, the sub-grid scale processes, such as the ionic exchanges and other activity transfers among phases, are included. In the second part of this work, which is presented in a separate paper, the model is applied and validated using studies of 137Cs and 239+240Pu dispersion in the Irish Sea.

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Accession: 008019280

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DOI: 10.1016/0265-931x(93)90035-6


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