An aggregated model to evaluate tsunami response in semienclosed water bodies is presented in this work. The model is based on one-dimensional shallow water equations and can include long-wave external forcing such as a tsunami. It has been successfully validated against experimental data from a physical model, and its predictions for a case study have been compared with results from the Cornell multigrid coupled tsunami (COMCOT) model. The model can be used as a predictive tool because a calibration using a theoretical value for expansion and contraction losses has been performed and differences with the typical calibration are less than 10%, which is considered acceptable. This allows using the model in the absence of measured data, which is very difficult to obtain in case of a tsunami event. A case study for the Gulf of Cádiz (Spain) has been simulated with the COMCOT model. The aggregated model predicted the response for a harbor more accurately than for estuarine systems with tidal flats. Nevertheless, the aggregated model has been demonstrated as a useful general tool to predict the response of semienclosed tidal basins to a tsunami event, and hybrid models coupling advanced models to simulate ocean tsunami propagation with the model presented here would be useful in developing coastal warning alert systems.
|Number of pages||8|
|Journal||Journal of Hydraulic Engineering|
|Publication status||Published - Aug 2012|
Baston, S., Olabarrieta, M., Lomonaco, P., Mendez, F. J., & Medina, R. (2012). Tsunami response in semienclosed tidal basins using an aggregated model. Journal of Hydraulic Engineering, 138(8), 744-751. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000573