Author(s): Serene H. X. Tay, Alamsyah Kurniawan, Seng Keat Ooi, Vladan Babovic
Linked Author(s): Seng Keat Ooi
Keywords: Hydrodynamic, modelling, coastal, Singapore Strait, Malacca Strait
Abstract: Geographically located between Indian Ocean and South China Sea, the straits of Singapore and Malacca are one of the world's busiest maritime trading routes. In addition to shipping operations, more facilities and infrastructure have been constructed near the coast of Singapore in the recent years, and they are heavily dependent on sea water for different purposes such as cooling and desalination. Therefore, coastal water quality management is becoming one of Singapore's national interests. One of the tools to help achieving this is a high spatial resolution localized model that represents the Singapore coastal water condition accurately. Previous studies show the seasonal pattern in the throughflow of straits of Singapore and Malacca that is not induced locally, but rather caused by wind and pressure forcing applied on large basin scale water bodies; South China Sea and Indian Ocean, respectively. In order to account for this non-tidal flow in a localized model of high spatial resolution, several types of modelling approaches have been introduced previously such as multi-scale and multi-domain modelling. One of these approaches includes nesting of the local detailed model in a large domain model to obtain forcing condition at the nested boundaries. This paper will evaluate the various nested boundary conditions to simulate the hydrodynamics in Singapore and Malacca straits accurately for operational forecast and management. The optimum boundary condition setting of the nested model in Singapore Strait is found to be one with boundary condition of current velocity prescribed in the Eastern and Western boundaries and water level in the Southern boundary
Year: 2017