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Dynamics and morpho-sedimentary interactions in the lower mesotidal estuary of Villaviciosa (NW Spain) : A management proposal
Flor, Germán (Universidad de Oviedo. Departamento de Geología)
Flor-Blanco, Germán (Universidad de Oviedo. Departamento de Geología)
Rey, J. (Esgemar, S.A. Estudios Geológicos Marinos)

Data: 2015
Resum: The accumulation of sediment in the mouth of Villaviciosa estuary (NW Spain) is becoming an obstaclefor the safe navigation in this estuary. One sector of its outer inlet is characterised by a broad shoal linkedwith a longshore bar of a beach, whose erosion is causing the silting of this area. On this basis, this paperaims to describe the processes that occurred in the lower part of the estuary due to the anthropogenicactivities in the channel and inlet. For this purpose, several measurements were made in the watercolumn and in the sedimentary bottoms to characterise the processes that occur in this area. Based onthese results, a dynamic and morpho-sedimentary model was developed to examine the interactionsbetween the lower estuary and the exposed part of the confining barrier beach, which allows to establishthe evolutionary trends of sedimentary bottoms linked to the marina of El Puntal. Different managementmeasures are carried out to reduce the impact of the sediment accumulation on the navigability, such asperiodically dredging in the inlet of the estuary, and the subsequent dumping of the sediments in areasnear to the closure depth. Consequently, future retreat of narrow inlet and sandy shoal can be avoided,maintaining the sedimentary volume in the system.
Drets: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria. Creative Commons
Llengua: Anglès.
Document: article ; recerca ; publishedVersion
Matèria: Longshore bar ; Dynamic and morpho-sedimentary model ; Inlet ; Management ; Villaviciosa estuary
Publicat a: Geologica acta, Vol. 13 Núm. 2 (June 2015) , p. 107-121, ISSN 1696-5728

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DOI: 10.1344/GeologicaActa2015.13.2.3

15 p, 4.7 MB

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