Beaches : profiles, processes and permeability

Gourlay, M. R. (Michael Richard) Beaches : profiles, processes and permeability. St. Lucia: Dept. of Civil Engineering, University of Queensland, 1980.

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Author Gourlay, M. R. (Michael Richard)
Title Beaches : profiles, processes and permeability
Place of Publication St. Lucia
Publisher Dept. of Civil Engineering, University of Queensland
Publication year 1980
Sub-type Other
Series Research report (University of Queensland. Dept. of Civil Engineering) ; no.CE 14.
Language eng
Total number of pages 36
Year available 1980
Subjects 290800 Civil Engineering
Formatted Abstract/Summary

Synopsis

The factors influencing beach profiles are discussed together with some of the advantages and limitations of laboratory investigations of beach processes. Previous evidence for the importance of the dimensionless fall velocity H0/Tw in determining the type of beach profile is reviewed together with the influence of initial profile slope upon the equilibrium of profile form. A laboratory investigation of equilibrium beach profiles formed in two sediments with very different permeabilities, 0.22 mm marine sand and 1.55 mm crushed coal, is described. The experimental results presented include an extensive summary of the sediment properties of each beach material , selected equilibrium beach profiles and various hydraulic and beach profile parameters including wave set-up within the beach. The importance of H0/Tw in beach processes in confirmed and it is found that the effects of beach permeability are related to the magnitude of the parameter wf/w, the ratio of the fluidising velocity of the sediment to the velocity of the sediment particles in clear water.

Keyword Beaches
Sediment transport
Q-Index Code AX
Q-Index Status Provisional Code
Institutional Status Unknown

 
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