CONSTRUCTING A NUMERICAL MODEL OF CESIUM CONCENTRATION ANARYSIS SEDIMENT CONSIDER MASS TRANSPORT IN THE TOKYO BAY

Abstract

 Object of this study is to predict distribution of cesium deposited on the bottom of Tokyo Bay by means of a 3-dimensional flow model linked with a diffusion model for emergency in the Tokyo bay. We have divided the bottom sediment layers into 3 layers: the boundary layer (between sea water layer and the parti-cle layer), the bioturbated layer, and the diffusion layer; and constructed an analysis model that treats the coupling of matter between sea water and the bottom sediment layer. Results were compared to the published observation data in order to examine applicability of the used models.