STUDI GAYA PEMBANGKIT DAN POLA ARUS PERMUKAAN LAUT DI LABUAN BAJO DARI DATA HIGH FREQUENCY RADAR PADA BULAN OKTOBER-DESEMBER 2018

• Main Author: Baharsyah, Yustika
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/69059
• Institution: Institut Teknologi Bandung

Surface current data was processed in Labuan Bajo from October to December 2018 to analyse them spatially and temporally and to determine the driving force of surface currents. The current data set is derived from measurements of High Frequency (HF) radar, which operates on the electromagnetic wave spectrum at high frequency or short wave. The average wind speed over three months is 4.39 m/s, with winds primarily from the north and northeast, with the west monsoon strengthening and the east monsoon weakening. With a semidiurnal tidal type, the average elevation value for three months is 1.52 meters. The study area demonstrates that shallow waters have currents that move southward or approach the island of Komodo at irregular speeds, influenced by small islands. Because of the deep bathymetry, the current moves to the west following the wind direction, at a constant speed. The direction of the current indicates that the tides influence current movement in shallow water, whereas the wind influences current movement offshore. EOF mode 1 has a variance of 56.2% because of tides, mode 2 has a variance of 26.6% because of bi-weekly variability, and mode 3 has a variance of 17.2% because of the monthly period. The correlation and filtering results show that the influence of tides is greater than the influence of wind at each review point. However, the wind's influence remains strong in offshore compare to shallow water.