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Tsunami response in semienclosed tidal basins using an aggregated model

Abstract: 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.

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 Autoría: Bastón S., Olabarrieta M., Lomónaco P., Méndez F.J., Medina R.,

 Fuente: Journal of Hydraulic Engineering August 2012 | Volume 138, Issue 8 744-751

Editorial: American Society of Civil Engineers

 Fecha de publicación: 01/08/2012

Nº de páginas: 8

Tipo de publicación: Artículo de Revista

 DOI: 10.1061/(ASCE)HY.1943-7900.0000573

ISSN: 0733-9429,1943-7900

Url de la publicación: https://ascelibrary.org/doi/10.1061/%28ASCE%29HY.1943-7900.0000573