CD Skripsi
Analisis Pengaruh Arus Terhadap Transpor Sedimen Suspensi Material Gambut
The knowledge of sediment transport required to solve coastal problems. Sediment transport affects the coast through abrasion and sedimentation processes. It’s important to learn the dynamic of suspended sediment in understanding sediment transport. One of the factors that influences sediment transport is current. In this research, experiments were conducted with one-way flow, then flowed with sediment mixtures to obtain velocity and turbidity data. The material used in this experiment was peat and clay obtained from Bengkalis Island. Datas retrieved with 3 methods, sampling method, using Acoustic Doppler Current Profiler (ADCP) method and using turbidity meter. The conclusion acquired from this experiment: (1) Velocity of the flow declined at depth closer to the base of the flume. Velocity of the flow with 13 cm height is higher due to higher water discharge. (2) The settling velocity of peat smaller than clay. Flow turbulence is able to lift the sediment so there’s no deposition. (3) Turbidity of flow with clay mixture increased at depth closer to the base of flume. The high value of clay settling velocity and the flow velocity relatively small causing accumulation of clay material resulting in the high turbidity value. (4) Current affects sediment transport through comparison between velocity of flow and settling velocity of materials. Sediment will be carried away when the settling velocity of material is relatively small that when compared, the turbulence flow is able to carry the sediment and prevent the sediment to settle.
Keywords: ADCP, current, peat, sediment transport, turbidity
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