Numerical simulations were conducted to predict the change of CO2 concentration in the ocean caused by volcanic CO2 seeped from the seafloor in Wakamiko Caldera in Kagoshima Bay. The behavior of CO2 bubbles, their dissolution, and the advection-diffusion of dissolved CO2 in the water column were numerically simulated. A multi-scale ocean model, in which hydrostatic meso-scale and non-hydrostatic small-scale models are combined, was used for this purpose. The calculated distribution of CO2 concentration was in good agreement with observed data and the validity of the present multi-scale ocean model was confirmed.
展开▼
