The effect of relative crest submergence on wave breaking over submerged slopes

C.E. Blenkinsopp, J.R. Chaplin

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Abstract

Experiments were performed in a wave flume to measure the intensity, transmission and reflection of waves breaking over a submerged reef with an offshore gradient of 1:10. The results demonstrate that the relative water depth over the reef crest (h/H) is a dominant factor affecting the breaking characteristics. In particular it is found that as the relative crest submergence is reduced, there is a considerable increase in the intensity of wave breaking over the reef that can be quantified through measurements of the air cavity enclosed beneath the plunging jet. It is also shown that there is a corresponding decrease in wave transmission and reflection as the submergence is reduced.
Original languageEnglish
Pages (from-to)967-974
Number of pages8
JournalCoastal Engineering
Volume55
Issue number12
Early online date5 May 2008
DOIs
Publication statusPublished - 1 Dec 2008

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