Assessing Sediment Transport on Estuary-Sea Area Using a Two-Dimensional Coastal Topography Evolution Model

The amount of sediment yield due to erosion in the watershed causes morphological evolution in the estuary-sea area. Eroded sediments are carried by runoff and transported downstream the rivers, finally into coastal areas. Consequently, deposited sediments will alter the morphology of estuary-sea. Therefore, the quantity of sediment from the watershed should be evaluated reasonably to improve the precision of simulating topography evolution in the coastal areas. Therefore, the hydrograph of flow discharge and suspended sediment concentration and sediment yield need to be estimated and then be used as the boundary conditions for the Two-Dimensional Topography Evolution model to simulate sediment transport and topography evolution in the estuary-sea area.