Effect of coast slope on solitary breaking waves attenuation by coastal vegetation

Document Type : Research Paper

Authors

1 MSc. Graduated / Shahid Chamran University of Ahwaz

2 Professor / Shahid Chamran University of Ahwaz

Abstract

Every year, long waves attacks such as tsunamis cause coastal erosion and destruction and bring irreparable damages to the life and properties of people. Recent approaches of coastal protection are based on environmental balance. Of the new methods of coastal protection against destructive force of waves is planting coastal forest known as green belt. Coast slope is one of effective factors which contributes with the wave breaking condition and wave run-up. Hence, the aim of present study is to investigate the effect of coast slope on solitary breaking waves attenuation by coastal forest. To this purpose, a sloping coast and a coastal vegetation model were installed in a flume equipped to a frictionless force measurement system. The experiments were conducted in four different coast slopes in both with coastal vegetation and without coastal vegetation mode. The results indicated that increase of the coast slope causes the waves to break faster into vegetation area, hence more wave force absorption. The amount of the wave force reduction in presence of vegetation in comparison with the non-vegetated condition in different coast slopes was 17 percent on average.

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References

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Iranian Journal of Soil and Water Research
Volume 49, Issue 1
March and April 2018
Pages 111-123

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