GRAIN-SIZE SORTING IN THE SWASH ZONE ON UNEQUILIBRIUM BEACHES AT THE TIMESCALE OF INDIVIDUAL WAVES

Tetsuya Kakinoki, Gozo Tsujimoto, Kohji Uno

Abstract


In comparison with hydrodynamics of the swash motion, measurements of sediment load using conventional method can be highly problematic, due to the difficulties, particularly wets and dries, very small water depths, aerated and high velocity, in measurements. For this reason, it is not clear that the sediment transport for each size of particle and sediment sorting in the swash zone. The purpose of this study is to investigate process of grain-size sorting in the swash zone at the time scale of individual waves in laboratory.

Keywords


grain-size sorting; swash zone; morphological change; image processing

References


David, Briggs (1977): Particle size analysis, Sources and methods in geography: Sediments, Butterworth, 55-110.

D.M.Rubin (2004): A simple autocorrelation algorithm for determining grain size from digital images of sediment, Journal of Sedimentary Research, Vol.74, No.1, 160-165.http://dx.doi.org/10.1306/052203740160

Paul D. Komar (1998): Beach morphology and sediments, Beach processes and sedimentation, Second Edition, Prentice Hall, 56-62.


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