OPTIMUM CONDITION FOR STABILTY OF AN ARTIFICIAL BEACH WITH A GRAVEL FILTER LAYER UNDER IRREGULAR WAVE ACTION
Proceedings of the 32nd International Conference
PDF

Keywords

sediment transport
numerical simulation
change in water level
digital image

How to Cite

Tsujimoto, G., Hosoyamada, T., & Kakinoki, T. (2011). OPTIMUM CONDITION FOR STABILTY OF AN ARTIFICIAL BEACH WITH A GRAVEL FILTER LAYER UNDER IRREGULAR WAVE ACTION. Coastal Engineering Proceedings, 1(32), sediment.103. https://doi.org/10.9753/icce.v32.sediment.103

Abstract

The safety of a fail-safe artificial beach was studied. Beach profile changes and the onshore-offshore distribution of the sand particle size were measured in a water flume. Under the action of erosive waves, sand particles are deposited on the run-up area. Because of the increasing permeability of the filter layer, the beach profile can be in equilibrium. A filter layer promotes the sorting of sand particles, and depositional waves deposit coarse sediments on the onshore side and fine sediments on the offshore side for an erosive-type beach. A filter layer has the potential to change the beach profile without requiring changes in the water level. The permeability of a filter layer has greater effect on the water velocities and water surface in the stage of run- down than in the stage of run-up.
https://doi.org/10.9753/icce.v32.sediment.103
PDF

References

Asano T.1999.Wave action near the swash zone, Summer Seminar, JSCE, B-6-1-17. (in Japanese)

Horikawa,K.,T.Sunamura and H.Kondo. 1976. Experiments on two dimensional beach profile changes due to wave actions, Annual Journal of Coastal Eng., JSCE, 23,193-200. (in Japanese)

Nishi I., M. Sato,K.Matano, S.Makino and H. Yasui,1988. Experiments on beach profile changes under irregular waves, Annual Journal of Coastal Eng., JSCE, 35,426-466. (in Japanese)

Tsujimoto G., T.Hosoyamada, T.Ohnishi and T.Kakinoki, 2007. Beach profile change of an artificial coast with a gravel filter layer, Coastal Structure 07, 571-582.

Tsujimoto G., F.Yamada and T.Kakinoki, 2008. A study on measuring sand particle size using digital images of sediment by Rubin's method, Annual Journal of Civil Engineering in the Ocean, JSCE, 36, 464-468. (in Japanese)

Uda T., A. Omata andT. Takebuchi. 1989. Time and spatial variation of sediment grain size and mechanism of berm at the foreshore side, Annual Journal of Coastal Eng., JSCE, 36,359-363. (in Japanese)

Barnard Patrick L., David M.Rubin, Jodi Harney and Neomi Mustain 2007.Field test comparioson of an autocorrelation technique for determining gain size using a digital 'beachball'camera versus traditional methods, Sedimentary Geology, 201, 180-195 http://dx.doi.org/10.1016/j.sedgeo.2007.05.016

Kobayashi, N. and Q. Wurjanto 1990, Numerical model for waves and on rough permeable slopes, Journal of Coastal Research, 149-166.

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

Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.