Dernière mise à jour le : 20 janvier 2013

Runup estimations on a macrotidal sandy beach

DESCRIPTION

This paper presents a methodological approach to calculate runup from the analysis of morphodynamic conditions on a macrotidal sandy beach. The method is based on measurements of the elevation of high-tide deposits and on the analysis of morphological and hydrodynamic changes. A series of measurements has been carried out on the beach of Vougot (Brittany, France) under different wave conditions. This allowed to assess runup formula effectiveness on a macrotidal sandy beach and to determine the best slope parameters to estimate runup. The results suggest that on that macrotidal sandy beach the slope of the active section of the upper beach should be used instead of the entire slope of the foreshore, the latter resulting in an underestimation of runup elevations when used in predictive equations from the literature. Results obtained with widely used equations are relatively well correlated with observed values (r2=0.63).An analysis of the relationship between observed runup elevations and various variables has enabled the establishment of a runup estimation formula with a relatively good fit to the study site (r2= 0.86).

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keyboard_arrow_right Titre : Runup estimations on a macrotidal sandy beach
keyboard_arrow_right Type de documentation : Articles
keyboard_arrow_right Auteur(s) personne(s) : SUANEZ S., CARIOLET J.-M
keyboard_arrow_right Date de publication : 20 janvier 2013
keyboard_arrow_right Nombre de pages : 11-18
keyboard_arrow_right Editeur(s) : Elsevier
keyboard_arrow_right Tags thématiques : plage, sable, marée
keyboard_arrow_right Mots-clés libres : Morphodynamique/Milieu littoral/Onde/Hydrodynamique/Océan Atlantique/Europe Ouest/France/Océan Atlantique Nord Est/Bretagne/Runup/Morphodynamic/Beach slope/High-tide deposit/Macrotidal environment/Extreme water level
keyboard_arrow_right Localisation : PLOUGUERNEAU
keyboard_arrow_right Langue : Anglais

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