Impact Of Tides On Eddies Formation In Sulawesi Sea. Dwiyoga Nugroho
Research Center For Oceanography
Abstract
In this study, we investigate the effects of explicit tidal forces on numerical models of eddies formation in the Sulawesi Sea. The model used was ROMS CROCO, with a 1/36 degree horizontal grid resolution in 30 vertical layers. The effect of tides on eddies is examined by comparing the results of two simulations with and without tides forcing, namely TIDE and NOTIDE. Seasonal analyzes of the model are strongly correlated with satellite observational data and climatological results. Models with explicit tides show higher correlation values than models without tides. The model was run for three years and the effect of eddy kinetic energy on mean seasonal eddy kinetic energy was performed between two simulations. The eddy kinetic energy is smaller in non-tidal simulations. The effects of internal tides on eddies are analyzed using instantaneous results, and the vertical structural profiles of eddies are found to be different in the two simulations. Moreover, model results showed that internal tides provide additional mixing energy to the eddies.
