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VISUALIZATION MEASUREMENT OF MIGRATION OF SEDIMENT PARTICLES ON DUNES
Journal article

VISUALIZATION MEASUREMENT OF MIGRATION OF SEDIMENT PARTICLES ON DUNES

Ryota Tsubaki, Sándor Baranya, Marian Muste and Yuji Toda
Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.74(4), pp.I_1093-I_1098
2018
DOI: 10.2208/jscejhe.74.I_1093

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Abstract

An experimental study was conducted to clarify sediment particle motion and its relation to the dune migration. High-definition action video cameras were utilized to record the images of particle motion in a domain covering dune scale. Image processing was conducted to homogenize the illumination heterogeneity due to bed form and light reflection at the water surface. Then, Particle Image Velocimetry was conducted to quantify the instantaneous velocity distribution of sediment particles. Unsteady sediment motion and its relation to the shape, deformation of the shape and migration of dunes were discussed.

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