Accession Number:

AD0745922

Title:

Wave Reflection and Transmission at Permeable Breakwaters,

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE RALPH M PARSONS LAB FOR WATER RESOURCES AND HYDRODYNAMICS

Report Date:

1972-03-01

Pagination or Media Count:

238.0

Abstract:

Rubble mound breakwaters are designed to protect exposed marine areas from excessive wave activity. Observations of breakwaters inter-acting with surface waves in laboratory models and in full-scale field applications demonstrate that significant wave energy is transmitted through the interstices of structures commonly regarded as impervious. The objective of this investigation is the development of a theoretical analysis to account for this phenomenon. Three breakwater configurations are considered 1 crib style breakwaters with vertical walls and homogeneous fill, 2 conventional trapezoidal shape breakwaters with layered fill, and 3 pile array breakwaters composed of vertical piles placed in symmetric patterns. The two dimensional problem is studied. Waves are assumed to arrive at normal incidence. Author

Subject Categories:

  • Physical and Dynamic Oceanography
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE