Fig.2 Time history of kinetic energies from the mixed layer to the seventh layer (a) and from the eighth layer to the thirteenth layer(b). The mixed layer kinetic energy decrease rapidly for the first four years (a) and the eleventh layer kinetic energy increases at the end of the year, suggesting that the mixed layer energy was transferd downward. After 130 years integration the kinetic energies from the mixed layer to the seventh layer reach cycro-stationary state, while the deeper layers show interannual change.
