Abstract
This study newly developed an air-sea-water quality coupled model in order to consistently analyze long-term and short-term variations of water structure in a coastal zone. The model was applied to Ise Bay area and its validity and utility were verified through the comparisons between the numerical results and observation data. As a result, it was revealed that the coupled model can simulate not only long-term variation such as formation and deformation processes of density stratification and dynamic process of hypoxia, but also complex water variation in a short period with high accuracy.