SEDIMENT TRANSPORT PATHWAYS DETERMINED FROM GRAIN CHARACTERISTICS BASED ON DIGITAL IMAGES

Gozo Tsujimoto, Masahiro Tamai, Sota Nakajyo, Tetsuya Kakinoki, Koji Uno

Abstract


①The grain size accumulation curve obtained by an image picture is comparable as the mechanical sieving technique ②With decreasing of the diameter of sand grain, the value of roundness increases. So the shape of sand grain gets in a perfect circle and the distributions of roundness frequency show the Gaussian distribution.③The sediment path way along the beaches on Awaji Island estimated by the expanded model corresponds to observation data very well.④The statistical significant level of the expanded model for sediment transport path way increases with introducing the value of roundness.

Keywords


sediment tranport; coastal process;grain size

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References


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DOI: https://doi.org/10.9753/icce.v34.posters.17