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

Plotting 2 sets of flow vectors (model and observational) for calibration

Judith Herold, modified 2 Years ago.

Plotting 2 sets of flow vectors (model and observational) for calibration

Youngling Posts: 3 Join Date: 5/15/17 Recent Posts
Hi all,

I am using the standard Delft3D package for some coastal modelling. I would like to know what others use for post-processing for plotting flow vectors.
In particular for plotting 2 sets of flow vectors (superimposed on each other) in a 2D plane for calibration purposes.
One data set would be model output and the other observational velocity data.

In GPP you can plot 2 sets of model velocity output.

Can GPP also plot observational velocity data?
What format does the data file need to be in?
I tried to make a samples file (2D observation data) with extension .obs, following the GPP user manual (pg 46) with the following columns:
"X" "Y" "U velocity" "V velocity"
but GPP could not read the file.

Any suggestions on the best way (GPP or other package) to show both model and observational flow vectors would be appreciated.

Thanks, Judy.