COMMENTS ON SIMULATION ON SEDIMENTATION O F CO2 IN DEEP-SEA

This letter gives some critical comments on the paper in the title aut hored by Saji et al. [published in Kagaku Kogaku Ronbunshu, 22, 1273-1 280 (1996)]. We point out that the momentum and the CO2-conservation e quations used to simulate the dissolution of CO2 in the sea may be ser iously erroneous. An inconsistency between these equations and some of the results of the simulation is suspected. Questions are raised on t he authors' assumptions of physical quantities such as the hydrate den sity, the CO2-in-seawater solubility, and the initial size of liquid-C O2 droplets or hydrate balls released into the sea.