A LABORATORY STUDY OF OFFSHORE TRANSPORT OF SEDIMENT AND A MODEL FOR ERODING BEACHES
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Keywords

laboratory study
offshore transport
sediment transport
eroding beach

How to Cite

Sunamura, T. (1980). A LABORATORY STUDY OF OFFSHORE TRANSPORT OF SEDIMENT AND A MODEL FOR ERODING BEACHES. Coastal Engineering Proceedings, 1(17), 64. https://doi.org/10.9753/icce.v17.64

Abstract

A two-dimensional laboratory investigation of sediment transport, induced by shallow-water waves, showed that the sediment motion over suspension-dominant asymmetric ripples is closely related to the development of eroding beaches. High-speed motion picture analysis revealed that vortices, formed over this type of ripple, play a crucial role in transporting the sediment to the offshore region. A relation for net offshore sediment flux was formulated for sand 0.02 cm in diameter. A simple model for eroding beaches was proposed and its validity was checked by using two existing data sets for 0.02-cm sand beaches; the model could predict fairly well profile and shoreline changes in the early stages.
https://doi.org/10.9753/icce.v17.64
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