Abstract
Benoa Bay is a micro tidal semi-enclosed water with a size of 10 km x 15 km of the inner bay with a narrow gap formed by Serangan Island and Benoa Peninsula. Benoa Bay is a strategic area in south of Bali Province linked to the Indian Ocean through a narrow entrance. Recently, a large amount of siltation occurred in this area, which is caused by sedimentation from five rivers discharged into the bay. The sedimentation in the lagoon is of ecological and physical concern due to the mangrove ecosystem disturbing and operation of Benoa port for the necessity of increased dredging. This paper deals with tide-induced flows in a semi-enclosed water body in a micro-tidal environment that is subjected to tide and river discharge conditions. In this study, The Coastal Modeling System (CMS) developed by Coastal Inlets Research Program was used for simulating flow, waves, sediment transport, and morphology changes in coastal areas. This CMS has effectively calibrate the data set supplemented by field observations.
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