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In this tool (coastline development) you can compute alongshore sediment transports and shoreline dynamics.
The tool requires a shoreline, cross-shore profile, a wave climate and sediment characteristics (you can inspect the generic data availability in the top panel of the tool). Breakwaters will also be used in case they are provided. Breakwaters fully block alongshore transports at the nearest coastline grid pointcell.
Alongshore transports are based on either the Kamphuis or CERC alongshore sediment transport formula.
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E.g.: when increasing both the number of gridpoints and the run-period by a factor 2, the computation will take 8x longer (!)
User input fields
Default value are provided for a number of input parameters. These can be adjusted according to the specific, local stituation. The following input parameters can be defined:
Sediment parameter summary
This section provides an overview of the sediment characteristics (Median grain size D50, Porosity and Density) used for the sediment transport calculation. They can be changed in the Sediment inputfields in Generic Data.
Transport formula
Select the transport formula used for the calculation of te sediment transport. You can choose between Kamphuisor CERC.
Physical parameters
Breaker index -
Depth of closure -
Active height -
Water density -
Computation parameters
N points -
Total time -
Time interval -
Boundary parameters
Left boundary
Right boundary
Tool limitations
The following processes are not included in the tool: wave shadow zoning, alongshore varying wave climates, by-passing of breakwaters, non-linear beach profiles etc.
Results in terms of alongshore transports and coastline dynamics should therefore be interpreted with a considerable range of uncertainty.
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