Chapter
Apr 26, 2012
Sediment Transport Patterns During Overwash
Authors: Ana Matias [email protected], Ana Vila-Concejo [email protected], Óscar Ferreira [email protected], Brad Morris [email protected], and João A. Dias [email protected]Author Affiliations
Publication: Coastal Sediments '07
Abstract
Overwash is an important process in the evolution of barrier systems. The main aim of this paper is to present short-term measurements on sediment transport induced by overwash processes. For that purpose fieldwork campaigns were performed including measurements of oceanographic conditions, overwash flows, overwash-induced morphology variations, and sediment transport patterns. The sediment dynamics induced by overwash varied according to the washover morphology even though the tidal levels or incident energy were similar. The sediment movement inside the washover plain during an overwash event can be divided into three main stages: Stage 1 — Crest Accretion, Stage 2 — Onshore Transport, and Stage 3 — Dynamic Equilibrium. The sediment transport inside the washover lobe can be characterized by one onshore flow stage, but with variations in magnitude related to the tidal levels and breaking wave height.
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Published In
Coastal Sediments '07
Pages: 2049 - 2060
Copyright
© 2007 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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Affiliations
CIACOMAR — Universidade do Algarve, Avenida 16 Junho, s/n, 8700-311 Olhão, Portugal. E-mail: [email protected]
Coastal Studies Unit, School of Geosciences F09, University of Sydney, Sydney NSW 2006, Australia. E-mail: [email protected]
F.C.M.A./C.I.M.A. — Universidade do Algarve, Campus de Gambelas, 8005-139Faro, Portugal. E-mail: [email protected]
W.R.L., School of Civil and Environmental Engineering, University of New South Wales, King St, Manly Vale, Sydney NSW 2093, Australia. E-mail: [email protected]
F.C.M.A./C.I.M.A. — Universidade do Algarve, Campus de Gambelas, 8005-139Faro, Portugal. E-mail: [email protected]
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