No. Page 



34 Bypassing sand transport rate at the downdrift end of a groin 



x = W as a function of time 55 



35 Definition sketch for the problem of shoreline change in the 



vicinity of a detached breakwater 56 



36 Initial shoreline evolution in the vicinity of a shore-parallel 



detached breakwater (6 = 0.5 , a . = 0.4 rad , a „ = 0) 59 



ol oz 



37 Final shoreline position in the vicinity of a shore-parallel 



detached breakwater (6 = 0.5 , a , = 0.4 rad , a _ = 0) 60 



ol oz 



38 Definition sketch for a semi-infinite seawall for which no 



erosion occurs behind the seawall 61 



39 Definition sketch for a semi-infinite seawall for which erosion 



occurs behind the seawall 61 



40 Shoreline evolution in the vicinity of a seawall where 



erosion and flanking may occur behind it (a = 0.2 rad , 



a = 0.4 rad , 6=0.6) ?! 63 



o2 



41 Definition sketch for shoreline evolution downdrift of a jetty 



for which a finite number of solution areas is used to 



model diffraction 66 



42 Shoreline evolution in the vicinity of a groin for variable sand 



transport rate conditions (two solution areas; 6 = 0.5 , 



a . = -0.1 rad , a „ = -0.4 rad) 67 



ol o2 



43 Shoreline evolution behind a jetty with linear variation in 



breaking wave angle in the shadow zone (a = -0.1 rad , 



a„ = 0.4 rad) Y 69 



rl 



44 Shoreline evolution behind a jetty with exponential variation in 



breaking wave angle (a = 0.4 rad , yL = 1) 70 



