Estimation of the Baroclinic Tidal Energy in the Timor Sea Based on a General Circulation Model

Xixi Wen, SCSIO South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China and Shiqiu Peng, South China Sea Inst. of Oceanology, Guangzhou, China
Baroclinic tidal energy generated by the major semidiurnal (M2 and S2) and diurnal (K1 and O1) tidal constituents in the Timor Sea is investigated by using MITgcm with high-resolution configuration. The components of the governing equation for the depth-integrated baroclinic energy are analyzed. It is shown that the baroclinic kinetic energy budget behaviors are different in the shallow continent shelf (< 150 m), continent slope (150 - 1200 m) and the deeper ocean (> 1200 m). Most of the baroclinic kinetic energy is generated at the continent slope and part of it dissipates locally. A fraction of it propagates into the shallower continent shelf and dissipates there. In addition, tidally induced diapycnal diffusivities tend to be strong in both deep ocean and thermocline.