ENERGY DISSIPATION ON A ROUGH SLOPE

Assuming long normally incident waves, described by linear theory, the energy dissipation on a rough slope is accounted for by introducing a term expressing the bottom shear stress. The theoretical development leads to a determination of the reflection coefficient as a function of the horizontal extent of the slope relative to the wave length in front of the slope and an equivalent slope friction factor. A method for the accurate determination of the reflection coefficient from experimental data is developed and used to establishe an empirical relationships for the frictional characteristics of a rough slope. The resulting semi-empirical procedure for estimating the reflection coefficient of rough slopes is shown to yield fairly accurate results. The results show that bottom friction may account for the dissipation of 80% of the incident wave energy on a slope as large as 13 where the incicent waves show no sign of breaking.

  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  United States  10017-2398
  • Authors:
    • Madsen, O S
    • White, S M
  • Publication Date: 1976-2

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00131188
  • Record Type: Publication
  • Report/Paper Numbers: ASCE +11904
  • Files: TRIS
  • Created Date: May 14 1976 12:00AM