CONTENTS 



FIGURES- -Continued 



Page 



15 The effect of the relative structure width on wave transmission of 



impermeable breakwaters 32 



16 Wave transmission coefficients for BW14 32 



17 Wave transmission coefficients for a breakwater tested by Saville 



(1963) with B/h = 0.88 33 



18 Wave transmission coefficients for a breakwater tested by Saville 



(1963) with B/h = 3.2 33 



19 Observed and predicted coefficients of wave transmission by 



overtopping 34 



20 Percent of wave energy at the forcing wave period for wave 



transmission by overtopping of a smooth impermeable structure .... 34 



21 Sample incident, reflected, and transmitted wave spectra .- . 36 



22 Spectral peakedness of incident, reflected, and transmitted wave 



spectra 37 



23 Zero up-crossing analysis 37 



• 24 Transmitted versus incident wave height distributions for a 



breakwater with dg/h = 0.8 38 



25 Transmitted versus incident wave height distributions for a 



breakwater with d /h =1.0 38 



26 Sample incident and transmitted joint distributions of wave height 



and period 39 



27 Definition of terms for wave transmission for permeable breakwaters. . 40 



28 Wave transmission and reflection' coefficients for BW3 41 



29 Sample observed and predicted reflection coefficients for permeable 



subaerial breakwaters '*! 



30 Wave transmission coefficients for a subaerial and a submerged 



breakwater ^2 



31 Observed and predicted transmission coefficients for BW3 45 



32 Observed and predicted transmission coefficients for BW12 45 



33 Observed and predicted transmission coefficients for BW4 46 



34 Observed and predicted transmission coefficients for breaking and 



nonbreaking conditions 46 



6 



