Model of Semi-Connected Tidal Inlets |

**Agnieszka Herman**

*Institute of Oceanography, University of Gdansk, Poland*

The most important features of SeCoTide are:

- The model can be run for any number of basins
*N*. - The basin surface areas can be described by any nondecreasing function of
*z*,*A*(_{b}*z*). Similarly, the cross-sectional areas and mean depths of the inlets and of the watersheds depend on water level:*A*(_{c}*z*),*A*(_{w}*z*) and*h*(_{c}*z*),*h*(_{w}*z*), respectively. - The user can provide the input parameters for the model either in a dimensional form or in terms of parameters analogous e.g to the Helmholtz frequency defined traditionally for single tidal inlets (see the model description for details).
- Based on time series of sea-surface elevation at the entrance to each inlet the model calculates time series of sea levels in each basin and of the current velocities through the inlets and watersheds.
- The model equations are written in a matrix form and solved by means of variable-order multistep ODE solver available in MATLAB.
- SeCoTide can be run via a simple, easy-to-use Graphical User's Interface (GUI) with help in HTML describing all technical details of its usage. The computational part of the programme (MATLAB m-file) is available as well (see the Download section). This is how the main window of the present SeCoTide version 0.9 looks like:

- SeCoTide version 0.9A Users Guide (pdf)
- Example application of SeCoTide: Magdalen Island Archipelago (pdf)
- go to the download page to download:
**SeCoTide GUI**(requires MATLAB^{®}release 2008a or the MATLAB Compiler Runtime, which can be obtained from me upon request) and/or**SeCoTideCalc.m**– the computational module as a MATLAB^{®}script.

Herman, A., 2007. Numerical modelling of water transport processes in partially-connected tidal basins. *Coastal Engng*, 54, 297-320, doi:10.1016/j.coastaleng.2006.10.003. (article)

Urbański, J.A., Herman, A., 2009. Water exchange between the basins of the German Wadden Sea studied with a coupled Matlab-ArcGIS model. *J. Coastal Res.*, SI 56 (Proc. 10th Int. Coastal Symp., Lisbon, Portugal), 1085-1089. (article)

- Inlets Online, U.S. Army Engineer Research and Development Center
- Tidal Inlets web-site at the TU Delft

- linear friction formulation
- improved error handling
- additional visualisation possibilities
- ... and any other ideas that show up

If you have any comments or suggestions, or if you found any bugs in the model, I'll be grateful if you send me an e-mail: oceagah@univ.gda.pl.

You may also want to visit my home page: Agnieszka Herman

You may also want to visit my home page: Agnieszka Herman