intro story Coast / Estuary

Coast / Estuary

Coastal systems are among the most dynamic physical systems on earth and are subject to a large variety of forces. The morphodynamic changes occurring to coastlines worldwide are of great interest and importance. These changes occur as a result of the erosion of sediments, its subsequent transport as bed load or suspended load, and eventual deposition. 
Estuaries are partly enclosed water bodies that have an open connection to the coast. Estuaries generally have one or more branching channels, intertidal mudflats and/or salt marshes. Intertidal areas are of high ecological importance and trap sediments (sands, silts, clays and organic matter).
Within the Delft3D modelling package a large variation of coastal and estuarine physical and chemical processes can be simulated. These include waves, tidal propagation, wind- or wave-induced water level setup, flow induced by salinity or temperature gradients, sand and mud transport, water quality and changing bathymetry (morphology). Delft3D can also be used operationally e.g. storm, surge and algal bloom forecasting. 
On this discussion page you can post questions, research discussions or just share your experience about modelling coastal and/or estuarine systems with Delft3D FM. 




Sub groups
D-Flow Flexible Mesh
Cohesive sediments & muddy systems



Message Boards

About the threshold depth for drying and flooding

Dong Liang, modified 2 Years ago.

About the threshold depth for drying and flooding

Youngling Posts: 4 Join Date: 11/4/14 Recent Posts
I am using Delft3D-FLOW to model a dynamic lake. I used the water area data to calibrate the parameter (threshold depth for drying and flooding). The optimal value tuned from experiments is about 1.0 m. Is it reasonable?
Some literature says the threshold depth should be a value small enough. If so, should I revise the bathmetry? What might caused the problem?