Abstract
CO2 oceanic sequestration is considered to enable industry made CO2 to be separated from the atmosphere. On the other hand, it is feared that the CO2 injected in the coastal zone may lower pH of seawater, thus may adversely affect marine animals.
For evaluating the biological influences, we have studied to predict the CO2 distribution around the CO2 injection site with the combination of near field model(gravitational plume model) with the far field model(ocean circulation model) developed by us.
Based on the predicted CO2 concentration, values of pH were computed. The minimum pH occurs at the injection point with 7.79. It was inferred that by reduction of pH occurs with the influence area of the injection point, considering the existing data of relation between pH values and the possibility of survival.
