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. 
 

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

 

 

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Water level simulation with astronomic components are the same

EE
Esther Espinoza, modified 1 Year ago.

Water level simulation with astronomic components are the same

Padawan Posts: 25 Join Date: 4/6/17 Recent Posts
Hi, first of all sorry if this is too obvious to ask.

I want to model water level using astronomic components for april and june of the same year for the open boundary, because I also want to simulate water level but using time series data for the same months (tide gauge data) in order to obtain the difference between both series which would be the meteorological tide. However, the results for both months, april and june, using the astronomic components are exactly the same so the highs and lows do not coincide with the results simulated with the time series data. I did two simulations with the astronomic components, one for each month. So, how do I make the model consider time for each month?

Then, I did just one simulation from april to june which obviously took more time. The results for april and june were different but the phase lag was not gone, even though it was reduced a little bit I can't use those results to obtain the meteorological tide. How do I solve this? Is it necessary to simulate the whole period in one simulation? What about if I want to simulate the same month for two different years? I will take a lot of computational time for that.

The astronomic components for both months were almost the same, there was no considerable difference.

Thanks!