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
Abstract:
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.