Morphodynamics of beach / dune systems: ...
Type de document :
Compte-rendu et recension critique d'ouvrage
Titre :
Morphodynamics of beach / dune systems: examples from the coast of France
Auteur(s) :
Sabatier, François [Auteur correspondant]
Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement [CEREGE]
Anthony, Edward [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Héquette, Arnaud [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Suanez, Serge [Auteur]
Littoral, Environnement, Télédétection, Géomatique [LETG - Brest]
Musereau, Jonathan [Auteur]
Littoral, Environnement, Télédétection, Géomatique [LETG - Rennes]
Ruz, Marie Hélène [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Régnauld, Hervé [Auteur]
Littoral, Environnement, Télédétection, Géomatique [LETG - Rennes]
Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement [CEREGE]
Anthony, Edward [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Héquette, Arnaud [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Suanez, Serge [Auteur]
Littoral, Environnement, Télédétection, Géomatique [LETG - Brest]
Musereau, Jonathan [Auteur]
Littoral, Environnement, Télédétection, Géomatique [LETG - Rennes]
Ruz, Marie Hélène [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Régnauld, Hervé [Auteur]
Littoral, Environnement, Télédétection, Géomatique [LETG - Rennes]
Titre de la revue :
Géomorphologie : relief, processus, environnement
Pagination :
3-22
Éditeur :
Groupe français de géomorphologie (GFG) / Société d'Études pour le Développement Économique et Social (Sedes)
Date de publication :
2009
ISSN :
1266-5304
Mot(s)-clé(s) en anglais :
aeolian sediment transport
spatio-temporal scale
shoreface
erosion
storms
spatio-temporal scale
shoreface
erosion
storms
Discipline(s) HAL :
Planète et Univers [physics]/Sciences de la Terre/Géomorphologie
Environmental Sciences/Environment and Society
Environmental Sciences/Environment and Society
Résumé en anglais : [en]
Four representative sectors encapsulating the morphological and hydrodynamic diversity of the French coast are used to illustrate the morphodynamics of beach/dune systems at various timescales. These beach/dune systems ...
Lire la suite >Four representative sectors encapsulating the morphological and hydrodynamic diversity of the French coast are used to illustrate the morphodynamics of beach/dune systems at various timescales. These beach/dune systems cover the four shoreline sectors composing the French coast, i.e., the southern North Sea, the English Channel, the Atlantic Ocean, and the Mediterranean, and range from stormdominated short-fetch to swell settings, and from micro- to macrotidal. The short-term processes affecting the beach/dune systems are strongly hinged on wind incidence and storm intensity, while sediment supply, modulated by marine processes, notably storms and tides, and by the regional wind directions, constitutes the primary control on long-term patterns of development. Beach morphology, notably the presence of bar/berm-trough systems, and water levels attained during storms, constitute key elements in the process of sand supply to the dune systems, which vary from low, poorly developed forms in the Mediterranean, to the well developed, but largely presently stable to erosive systems characterising the other three sectors. The comparative study of these systems shows that there is no linear relationship between storm intensity and the rate of dune erosion (except on Vougot site, English Channel), because of the influence of various parameters, notably the antecedent beach state.Lire moins >
Lire la suite >Four representative sectors encapsulating the morphological and hydrodynamic diversity of the French coast are used to illustrate the morphodynamics of beach/dune systems at various timescales. These beach/dune systems cover the four shoreline sectors composing the French coast, i.e., the southern North Sea, the English Channel, the Atlantic Ocean, and the Mediterranean, and range from stormdominated short-fetch to swell settings, and from micro- to macrotidal. The short-term processes affecting the beach/dune systems are strongly hinged on wind incidence and storm intensity, while sediment supply, modulated by marine processes, notably storms and tides, and by the regional wind directions, constitutes the primary control on long-term patterns of development. Beach morphology, notably the presence of bar/berm-trough systems, and water levels attained during storms, constitute key elements in the process of sand supply to the dune systems, which vary from low, poorly developed forms in the Mediterranean, to the well developed, but largely presently stable to erosive systems characterising the other three sectors. The comparative study of these systems shows that there is no linear relationship between storm intensity and the rate of dune erosion (except on Vougot site, English Channel), because of the influence of various parameters, notably the antecedent beach state.Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Source :
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- Sabatier_et-al_2009.pdf
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