A comparative study of models to predict storm impact on beaches

Iñaki Santiago (), Denis Morichon, Stéphane Abadie, Ad J. H. M. Reniers and Pedro Liria
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Iñaki Santiago: Université de Pau et des Pays de l’Adour
Denis Morichon: Université de Pau et des Pays de l’Adour
Stéphane Abadie: Université de Pau et des Pays de l’Adour
Ad J. H. M. Reniers: Delft University of Technology
Pedro Liria: AZTI-Tecnalia Herrera Kaia

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2017, vol. 87, issue 2, No 14, 843-865

Abstract: Abstract The storm impact scale of Sallenger (J Coast Res 890–895, 2000) was tested on a partially engineered beach. This scale is supposed to provide a convenient tool for coastal managers to categorize the storm impact at the shore. It is based on the relation between the elevation of storm wave runup and the elevation of a critical geomorphic or man-made structures in the present study. Two different approaches were tested to estimate the elevation of extreme storm wave runup: (1) a parametric model based on offshore wave conditions and local beach slope and (2) the XBeach process-based model that solves implicitly the runup. The study shows comparisons between impact regimes computed with the two methods and those derived from video observations acquired during 2 weeks while the site was battered by three consecutive storms. Storms scenario including wave conditions with higher return periods and different tidal range were also investigated. The advantages and disadvantages of the two methods used to compute extreme water level are then compared, and guidelines for the development of early warning system are drawn.

Keywords: Storm impact; XBeach; Extreme runup; Risk management; Urbanized beach (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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DOI: 10.1007/s11069-017-2830-6

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