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Apr 26, 2012
The Influence of Mud on the Inner Shelf, Shoreface, Beach, and Surf Zone Morphodynamics — Cassino, Southern Brazil
Authors: Lauro J. Calliari [email protected], K. Todd Holland [email protected], Pedro S. Pereira, Rafael M. C. Guedes, and Renato E. SantoAuthor Affiliations
Publication: Coastal Sediments '07
Abstract
The inner shelf, shoreface and beach at Cassino, located in the southernmost sector of the Brazilian coastline, are characterized by marked differences in grain size and sediment composition compared to adjacent areas. This lateral heterogeneity in sediment properties controls the geomorphology of the inner continental shelf and shoreface, and influences the shoreline accretion rate and beach morphodynamic behavior along a 25 Km stretch of coast. Short-term effects are associated with episodic events of mud deposition on the beach during heavy storms that often result in strong gradients in hydrodynamic processes. These gradients in turn influence the morphodynamic behaviors on the sectors affected by the mud deposits and can create coastal hazards relating to beach usage. These findings are almost certainly applicable in other regions where significant sediment heterogeneity exists.
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© 2007 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Fundação Universidade Federal do Rio Grande (FURG), Av. Itália, Km8, Campus Carreiros, Rio Grande, RS, Brazil. E-mail: [email protected]
Naval Research Laboratory, Code 7440.3, Stennis Space Center, MS 39525. E-mail: [email protected]
Pedro S. Pereira
Fundação Universidade Federal do Rio Grande (FURG), Av. Itália, Km8, Campus Carreiros, Rio Grande, RS, Brazil
Rafael M. C. Guedes
Fundação Universidade Federal do Rio Grande (FURG), Av. Itália, Km8, Campus Carreiros, Rio Grande, RS, Brazil
Renato E. Santo
Fundação Universidade Federal do Rio Grande (FURG), Av. Itália, Km8, Campus Carreiros, Rio Grande, RS, Brazil
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