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Influence of hydrodynamics and sedimentary characteristics of Barqueiro Ria on Arealonga Beach dynamics

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Delgado-Fernandez, Irene, Alcantara-Carrio, Javier, Alejo, Irene, Alonso, Ignacio and Louzao, Maite (2002) Influence of hydrodynamics and sedimentary characteristics of Barqueiro Ria on Arealonga Beach dynamics. Journal of Coastal Research, SI 36 . pp. 231-239. [Journal article]

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Abstract

The Barqueiro Ria, located on the north coast of the Iberian Peninsula, is one of the Galician "Rías Altas", which includes Arealonga Beach, the longest beach in the Ria, located in the inner portion. During the 1990s strong erosion has been registered on the beach and associated dunes, while a wide intertidal spit has grown westward. This behaviour is related to the hydrodynamic and sedimentary characteristics of the Ría and Sor Estuary.Tide and wave influence are evaluated using numerical simulations for storm events. Seasonal topographic monitoring of beach and dune profiles and surface sediment samples allow to describe the variations in sedimentary volume and map sediment units. Furthermore, grain size parameters trends are used to determine the sediment transport patterns. Three different zones have been defined along beach and foredune according to their sedimentary dynamics behaviour: i) Eastern zone, with a clear erosive tendency generating the backshore and foredune destruction ii) Middle zone, with dune erosion but sediment accumulation in the intertidal zone, and iii) Western zone, where the beach presents an accumulative profile, with a well developed supratidal area and active dunes.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Environmental Sciences
Research Institutes and Groups:Environmental Sciences Research Institute
Environmental Sciences Research Institute > Coastal Systems
ID Code:18449
Deposited By:Ms Irene Delgado-Fernandez
Deposited On:24 May 2011 11:26
Last Modified:24 May 2011 11:26

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