Open AccessLONGSHORE SEDIMENT TRANSPORT ON DEAN BEACH PROFILES
Author(s) -
William G. McDougal,
Robert T. Hudspeth
Publication year - 1984
Publication title -
coastal engineering proceedings
Language(s) - English
Resource type - Journals
eISSN - 2156-1028
pISSN - 0589-087X
DOI - 10.9753/icce.v19.101
Subject(s) - longshore drift , sediment transport , planar , geology , dimensionless quantity , submarine pipeline , sediment , bed load , intersection (aeronautics) , surf zone , geomorphology , energetics , geotechnical engineering , mechanics , oceanography , physics , geography , thermodynamics , computer graphics (images) , cartography , computer science
Natural beaches exhibit an equilibrium profile that is planar nearshore and non-planar, concave-up offshore. The longshore current on these Dean equilibrium beaches is shown to depend on the location of the intersection between the planar and non-planar profiles and on the dimensionless mixing strength parameter if the eddy viscosity coefficient is linearly dependent on the distance offshore. The effect of the profile intersection on the longshore sediment transport rate is demonstrated for two energetics based sediment transport models; viz. the Bagnold and energetics stress models.
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