Regional-scale application of the decision support system MOIRA-PLUS: an example of assessment of the radiological impact of the Chernobyl accident on the fresh water ecosystem in Italy.
Title: Regional-scale application of the decision support system MOIRA-PLUS: an example of assessment of the radiological impact of the Chernobyl accident on the fresh water ecosystem in Italy.
Author: Luigi Monte
Reference: Journal of Environmental Radioactivity. Feb2011, Vol. 102 Issue 2, p73-83. 11p.
doi: 10.1016/j.jenvrad.2010.10.002
Keywords: Decision support systems; Fresh water environment; Radionuclide migration models; Lakes; Rivers; MOIRA-PLUS
Abstract: ► MOIRA-PLUS is a computerised decision support system aimed at evaluating the behaviour of radiocaesium and radiostrontium in fresh water ecosystems and at assessing the appropriateness of suitable strategies for the management of the contaminated aquatic environment by the application of advanced multi-attribute analysis techniques. ► MOIRA-PLUS (release 4.1.2) allows the user to customise the migration model for the assessment of the behaviour of radionuclides in complex networks of water systems including, for instance, a main watercourse and several tributaries of different order. ► The test and the calibration of MOIRA-PLUS migration models applied to 18 rivers and 10 lakes in Italy gave the opportunity of customising MOIRA for practical applications to the fresh water environment in the Italian territory. ► The calibrations of the MOIRA-PLUS environmental models offered the opportunity of assessing site-specific values of several migration parameters of importance for predicting the dynamics of radiocaesium in the selected water bodies (radionuclide sedimentation velocity, radionuclide transfer coefficient from catchments, radionuclide burial rate to deep sediment). ► Conclusions: MOIRA-PLUS can be easily customised to complex freshwater systems at regional scale. Information and data obtained from independent empirical studies can be promptly exploited for testing and calibrating the models. MOIRA-PLUS can be used for quick evaluations of radionuclide fluxes through the aquatic compartments and of the doses released to humans.
URL: http://www.sciencedirect.com/science/article/pii/S0265931X10002250
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