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

Consecutive Times in BCT

Christopher Esposito, modified 6 Years ago.

Consecutive Times in BCT

Padawan Posts: 35 Join Date: 10/16/12 Recent Posts
Hello All,

One of my models won't run, with the following error:

*** ERROR Consecutive times in peepE04_from20161211.bct must increase

But the problem is that I am quite sure that the times in this .bct file are strictly increasing. The Matlab output below shows that this is the case, so I am not sure what the problem is. I am attaching a model that shows this same error in a .zip file, and I would appreciate it if someone could take a look at it to see if I am missing something. The td-diag file is included in the zip file.

One further note: these files were all written using the Delft3D Matlab toolbox, but I get the same behavior if I save them with the standard GUI.

Thanks for the help


>> bct=bct_io('read','peepE04_from20161211.bct');
>> steps1=bct.Table(1).Data(2:end,1)-bct.Table(1).Data(1:end-1,1);
>> steps2=bct.Table(2).Data(2:end,1)-bct.Table(2).Data(1:end-1,1);
>> min(steps1)

ans =


>> min(steps2)

ans =



Fernando Barreto, modified 6 Years ago.

RE: Consecutive Times in BCT

Padawan Posts: 74 Join Date: 6/21/12 Recent Posts
The times in .bct file are negative, I don't think that Delft3D allows this.

Fernando Barreto.
Christopher Esposito, modified 6 Years ago.

RE: Consecutive Times in BCT

Padawan Posts: 35 Join Date: 10/16/12 Recent Posts
you're right. that worked. I thought I had tested that, but apparently I hadn't.