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Measurement of sand creep on a flat sand bed using a high-speed digital camera
Article first published online: 2 MAR 2009
DOI: 10.1111/j.1365-3091.2009.01053.x
© 2009 The Authors. Journal compilation © 2009 International Association of Sedimentologists
Additional Information
How to Cite
WANG, Y., WANG, D., WANG, L. and ZHANG, Y. (2009), Measurement of sand creep on a flat sand bed using a high-speed digital camera. Sedimentology, 56: 1705–1712. doi: 10.1111/j.1365-3091.2009.01053.x
Publication History
- Issue published online: 15 SEP 2009
- Article first published online: 2 MAR 2009
- Manuscript received 19 July 2008; revision accepted 12 January 2009
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Keywords:
- Creep;
- high-speed digital camera;
- image processing;
- particle-tracking velocimetry;
- unsigned image subtraction
Abstract
In this study, a novel method for measuring sand creep along a flat bed was developed. Specifically, a high-speed digital camera was employed to record the sand creep movement. With an unsigned image subtraction, a new image queue could be formed from the original experimental images. The particle tracking was then calculated, after which the velocity and trajectory of the creep of sand grains was obtained. In addition, the creep fluxes of the different sand samples could also be calculated based on the velocities of the creep grains.