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



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Different reference levels in Delft3d Flow (for water level simulation)

Esther Espinoza, modified 3 Years ago.

Different reference levels in Delft3d Flow (for water level simulation)

Padawan Posts: 25 Join Date: 4/6/17 Recent Posts
Hi I'm modelling water level for an estuary. The reference level of the bathymetry data I got was with respect to the MLWS (Mean Low Water Spring) because the data is taken for navigation purposes. The reference level of the amplitudes (time series) of tides, was with respect to the MWL (Mean Water Level). I modelled an example to see what happens, I got no error. But I'm still wondering if the error about modelling water level (MWL) with bathymetry respect to the MLWS generates significant changes in the results and how Delft3d works with reference levels. Do you know how this difference will influence the results or how can I correct this before or after the simulation? The area I'm modelling is kind of big.