Analysis and Modelling of Waves, Tides and Currents On Sediment Distribution In Banyuasin River Estuary

Abstract

Sedimentation at the mouth of the Banyuasin River is a natural process whereby solid materials such as sand, mud, and other deposits accumulate in areas where the river meets the ocean. This process occurs because the flow of river water laden with solid materials slows down upon entering the calmer waters at the river mouth. By conducting analysis and modeling at the mouth of the Banyuasin River, patterns of sedimentation and the magnitude of sedimentation resulting from the convergence of river currents with waves, tides, and ocean currents at the mouth of the Banyuasin River can be determined. The analysis is performed using quantitative methods, the results of which can identify sedimentation patterns at the mouth of the Banyuasin River by considering several important factors, namely river currents, ocean waves, tidal fluctuations, and ocean currents. Modeling results using the Mike-21 software indicate that sedimentation occurs at various parts of the Banyuasin mouth, with relatively small volume magnitudes. The conclusion from this analysis and modeling is that sediment deposition at the mouth of the Banyuasin River exhibits dynamic stability due to the influence of significant river currents during certain seasons, allowing sediment deposition to occur within a certain period, while at other times, the sediment deposition is carried back by the river currents towards the sea.