Mots-clés
Action anthropique Algarve Chenal de marée Cordon littoral Delta Dynamique littorale Géomorphologie littorale Impact Littoral Portugal Ria Formosa Transport sédimentaire Algarve Coastal dynamics Coastal environment Coastal geomorphology Delta Human impact Impact Portugal Sand bar Sediment transport Tidal creek Acción antrópica Caño de marea Cordón litoral Delta Dinámica litoral Geomorfología litoral Impacto Litoral Portugal Transporte sedimentarioLong-term morphological impacts of the opening of a new inlet on a multiple inlet system
Auteur(s) et Affiliation(s)
PACHECO, A.
CIMA/Univ. do Algarve, Faro, Portugal
FERREIRA, Ó.
CIMA/Univ. do Algarve, Faro, Portugal
WILLIAMS, J.J.
ABP Marine Environmental Research Ltd, Southampton, Royaume-Uni
Description :
This study focuses on the dominant Faro-Olhão and Armona inlets in the Ria Formosa barrier island system of southern Portugal. The equilibrium state and future evolution of the system are inferred using a range of morphological and hydrodynamic indicators, including the evolution of the inlet cross-section, changes in tidal prism, and changes in the dimensions (length and area) of barrier islands. The results reveal how the morphology of an interconnected two-inlet bay system and the adjacent coastlines has evolved following the artificial opening and stabilization of Faro-Olhão inlet since 1929. A clear relationship between barrier island size, inlet cross-section/width, and tidal prism is demonstrated. The work highlights the importance of ebb-tidal deltas both as sand reservoirs and as conduits through which sand exchange between estuaries or lagoons and the open coast is regulated.
Type de document :
Article de périodique
Source :
Earth surface processes and landforms, issn : 0197-9337, 2011, vol. 36, n°. 13, p. 1726-1735, nombre de pages : 10, Références bibliographiques : 43 ref.
Date :
2011
Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)