Study on Seasonal Variation of Cohesive Suspended Sediment Transport in Estuary of Mahakam Delta by using A Numerical Model
Abstract: A coupled
three-dimensional hydrodynamics and sediment transport model of HydroQual,
Inc., (2002), ECOMSED, has been used to simulate variation of suspended
cohesive sediment transport in Estuary of Mahakam Delta. The simulation results
indicate that tides and seasonal variation of river discharges are the main
causes of variations in the suspended sediment concentration in this area. A one-year simulation of suspended sediment
distribution shows that the suspended cohesive sediment discharge to the
Makassar Strait is mainly transported southward, namely through locations of
Muara Jawa and Muara Pegah and seems to reach a maximum distance of
distribution in January and a minimum one in October. The simulation results
also show that river discharges less influence the suspended sediment
concentration at Tanjung Bayur, which is
located at the tip of the channel in the middle, compared to the other
locations.
Keywords: Three-dimensional
hydrodynamics and sediment transport models, Estuary of Mahakam Delta, Suspended cohesive sediment concentration,
Tides, River discharges
Author: Safwan Hadi
Journal Code: jptsipilgg050001
