Accession Number : AD0721552

Title :   Field Study of Wave Transmission Through a Rubble-Mound Breakwater.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Calhoun,Ronald Joel

Report Date : MAR 1971

Pagination or Media Count : 87

Abstract : Characteristics of sea and swell incident at a permeable rubblemound breakwater located in Monterey Harbor, California, are resolved into reflected and transmitted components. The wave characteristics are studied by analyzing synchronized wave records of three underwater sensors judiciously placed, two to seaward and one to landward of the breakwater. Power spectra and cross spectra are calculated for various characteristic sea states selected from three months of observations. Amplitude and phase are determined for the spectral wave components comprising the partial standing wave phenomena. This study was unique in that it entails experiments conducted in the field on a prototype structure in the natural environment. Transmission has been studied heretofore exclusively with scale models. The coefficients of transmission are considerably less for the prototype than predicted by a Corps of Engineers model study of the Monterey Breakwater. The differences are apparently related to more wave energy scattering and dissipation due to turbulence than predicted by the model. (Author)

Descriptors :   (*OCEAN WAVES, WAVE PROPAGATION), (*BREAKWATERS, HYDRAULIC MODELS), STRUCTURAL PROPERTIES, POWER SPECTRA, TIDES, HARBORS, WAVE FUNCTIONS, THESES, CALIFORNIA

Subject Categories : Physical and Dynamic Oceanography
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE