Sediment budget in direction of longshore drift on changi beach singapore essay

When a coastal sediment budget is in deficit, beach nourishment is one-way sediment equilibrium can be maintained. This type of management has been adopted all over the world in order to preserve and protect the coastal environment.

Within a coastal environment, the rate of change of sediment depends on the amount of sediment brought into the system compared to the amount of sediment that leaves the system. Although human activity contributes to the budget it is predominantly natural process that contributes to the coastal sedimentary budget.

Longshore drift can also supply sediment to one coastal area by moving it along the coast to adjacent areas. Constructive waves bring sediment to the shore from offshore locations and deposit it, adding to the sediment budget. Tides and currents do the same.

Sediment can be brought in by lorry and dumped on the beach before being spread out by bulldozers. Alternatively, sand and water can be pumped onshore by pipeline from offshore sources. In addition to this hard engineering, coastal management solutions can also affect the coastal budget.