Permeability Effects on Irregular Wave Runup and Reflection

Authors

  • Nobuhisa Kobayashi
  • Daniel T. Cox
  • Andojo Wurjanto

Keywords:

Irregular wave, runup, reflection, permeability, breakwaters, experiment

Abstract

Six small-scale test runs were conducted to examine the detailed spectral and time series characteristics of irregular wave reflection and runup on 1:3 rough impermeable and permeable slopes. The permeability effects reduced the average reflection coefficient and significant runup as was observed by a number of researchers. The permeability effects on irregular wave reflection were found to reduce the reflection coefficient fairly uniformly over the wind wave frequency range. The permeability effects on irregular wave runup were found to reduce the low frequency wave components significantly. The measured runup distributions in the range of the exceedance probability greater than approximately 0.02 were represented by the Rayleigh distribution fairly well.

 

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Published

1991-01-29

Issue

Vol. 7 No. 1 (1991): Journal of Coastal Research

Section

Articles

License

Authorization for personal use is granted by the Coastal Education and Research Foundation [CERF]. By submitting a manuscript, the authors agree that the copyright for their article is transferred to the publisher if the article is accepted for publication. Assignment of copyright is not required, however, from authors who work for organizations which do not permit such assignment, The copyright covers the exclusive rights to reprduce and distribute the article, inclduing reprints, photographic reproductions, microform, or any other reproductions of a similar nature, and translations.