Abstract
The diffusion-controlled migration of radionuclides released from a leaky canister located in a subseabed sedimentary layer, bounded at the top by the ocean and at the bottom by an impermeable basalt zone, is analyzed to determine the transport rate to the ocean floor. The unsteady-state diffusion equations for radionuclide decay chains have been solved by integral transform techniques to obtain analytical solutions for the concentration distribution, flux at the ocean-sediment interface and discharge rate to the ocean floor for each chain member. By means of a parametric study the effects of the major parameters on the release rate of radionuclides to the ocean floor are elucidated.
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