Oceanography Database Development in Bangka Seas

摘要

Bangka island is the biggest island in Bangka Belitung Province and located between Sumatra and Kalimantan Island. Furthermore, Bangka seas are connecting Natuna sea with Java sea and also become a important part of Indonesia Throughflow. This geographic condition makes Bangka island has a unique oceanography characteristics. However, the information of oceanography database of the Bangka waters remains limited. Thus, the purpose of this research is to develop a oceanography database in Bangka seas to support the development in these region like the zoning plan of Bangka Belitung. Focus area of this study is at the Bangka seas around Bangka Island. The characteristic of oceanography will be discuss in this study covering water quality, tides, waves, and currents. For describe those oceanography characteristic, the data obtained from field observation and numerical methods. For the current this research using MIKE21 and also using SWAN (Simulating Waves Nearshore) software for wave model. Furthermore, the tidal data from Babel Ocean Observation Science and Technologies (BOOST) Center will be used in this discussion. In addition, the data of water quality are obtained from field observation in several sampling location. From this research, significant wave height (Hs) in Bangka seas around 0.02-1.87 meters and the currents ranges from 0.05-0.72 m/s. The direction of waves and current dominantly to the southeast when the west monsoon and head northwest when the east monsoon direction influenced by wind direction. Furthermore, tides type of Bangka seas is diurnal with around 2.3 m tidal range. For water quality, Bangka seas have around 22°C temperature, 22-31‰ salinity, and pH are around 8.