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Accession Number ADA578398
Title Nonuniform Sediment Transport Modeling at Grays Harbor, WA.
Publication Date May 2011
Media Count 15p
Personal Author A. Sanchez W. Wu
Abstract A depth-averaged two-dimensional nonuniform sediment transport model is applied to the beaches adjacent to Grays Harbor, WA, USA to test the model skill in predicting nearshore morphology change. The model considers bed material hiding exposure, sorting, stratification, bed-slope effects, avalanching, non-erodible bed surfaces, and transport due to asymmetrical waves, Stokes drift, roller and undertow. The sediment transport, bed change and sorting equations are solved simultaneously and implicitly at the same time step as the hydrodynamics. The model is able to capture the onshore migration of the offshore bar and filling of the trough but has difficulty in the foreshore region where swash zone processes are neglected. The calculated nearshore water depths agree with measurements with an average Brier Skill Scores of 0.3 and bed changes with an average correlation coefficient R(expn 2) of 0.53.
Keywords Bathymetry
Depth
Equations
Grain size
Grays harbor(Washington)
Harbors
Hydrodynamics
Morphology
Nonuniform sediment transport models
Numerical methods and procedures
Sediment transport
Washington(State)


 
Source Agency Non Paid ADAS
NTIS Subject Category 48G - Hydrology & Limnology
72B - Algebra, Analysis, Geometry, & Mathematical Logic
46B - Fluid Mechanics
Corporate Author Army Engineer Waterways Experiment Station, Vicksburg, MS. Coastal Hydraulics Lab.
Document Type Technical report
Title Note Conference paper.
NTIS Issue Number 1321
Contract Number N/A

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