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Long-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
Droits :
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