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An experimental study of changes of beach profile and mean grain size caused by tsunami-like waves

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An experimental study of changes of beach profile and mean grain size caused by tsunami-like waves

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dc.contributor.author Chen, Jie
dc.contributor.author Huang, Zhenhua
dc.contributor.author Jiang, Changbo
dc.contributor.author Deng, Bin
dc.contributor.author Long, Yuannan
dc.date.accessioned 2012-10-11T06:13:58Z
dc.date.available 2012-10-11T06:13:58Z
dc.date.copyright 2012
dc.date.issued 2012-10-11
dc.identifier.citation Chen, J., Huang, Z., Jiang, C., Deng, B., & Long, Y. (2012). An experimental study of changes of beach profile and mean grain size caused by tsunami-like waves. Journal of Coastal Research, 28(5), 1303-1312.
dc.identifier.uri http://hdl.handle.net/10220/8760
dc.description.abstract Devastating tsunami waves can mobilize a substantial amount of coastal sediments and change the coastal morphology considerably. In this study, laboratory experiments were performed in a wave flume to investigate the changes of beach profile and mean grain size caused by tsunami-like waves that have a front similar to that of a solitary wave and an undulating tail following the wave front. A composite slope was constructed using a mixture of two sizes of sand. In addition to recording the wave rush-up and rush-down processes using video cameras, measurements were also made on water surface elevation, bed profile and the final size distribution of the sand mixture for three water depths. The results showed that sand suspension and erosion were caused mainly by sheet flows when water retreats from the beach, whereas the offshore sandbars, composed mainly of coarser sand, formed mainly from the run-down jumps caused by the collapsing of retreating water with waves in the undulating tail. The findings of this study have the potential to assist researchers in understanding nearshore tsunami flows from tsunami deposits.
dc.language.iso en
dc.relation.ispartofseries Journal of coastal research
dc.rights © 2012 Coastal Education & Research Foundation.
dc.subject DRNTU::Science::Geology::Volcanoes and earthquakes
dc.title An experimental study of changes of beach profile and mean grain size caused by tsunami-like waves
dc.type Journal Article
dc.identifier.doi http://dx.doi.org/10.2112/JCOASTRES-D-11-00180.1

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