WAVE NUMERICAL MODEL OF SWELL AND SEA AT ROTE STRAIT

Abstract

A spectral wave numerical simulation based on SWAN is used to model 10 years wave climate at Rote Strait, Nusa
Tenggara Timur province. ERA5 reanalysis data of total wave and wind is used for model forcing. Simulation results show
waves direction in Rote strait are coming from southeast and southwest. Waves direction at nearshore of southeast Timor island
coast are coming from southeast because of refraction and diffraction. Waves height over 0.8 m occurs in 320 days in one year.
50 years wave return period calculated at 2.68 m height. Indeed, port development in Rote strait area need to consider the down
time caused by waves and extreme wave forces in the design.