1.0 



H_ 

 Hb 



0.5 



(a) Laboratory 



K 

 O 



E 



Z 



(b) Field 



Figure 73. Experimental studies of wave height decay in surf zones as 



function of distance from breakpoint: (a) laboratory (after 

 Sawaragi and Iwata, 1974); (b) field (after Suhayda and 

 Pettigrew, 1977). 



195 



