Environmental modelling: Modified approach for compartmental models

摘要

Compartment modelling is used for evaluation of radiological consequences and dispersion of radionuclides in the marine environment. One of the general features of the compartment modelling is an instantaneous mixing of contaminants in the ocean. The influence on radionuclide dispersion in the marine environment and radioecological assessment of the developed modified approach for compartment modelling with non-instantaneous mixing of contaminants in oceanic space is discussed. New modifications of the model (calculations of doses to biota and ice transport of radionuclides) underline the significance of the modified approach. Simulations provided by the modified approach indicate that the algorithm with non-instantaneous mixing in oceanic space can predict the different time trends for ice and water transport in the Arctic Ocean (for instance, more rapid transport of contaminants by ice through the Kara Sea to the Fram Srait in comparison to water transport).