CONTENTS 



FIGURES- -continued 



Page 



.8 Spreading of sand along a shoreline due to instantaneous 



dumping at a point 25 



9 Sand dumping along a finite stretch of beach 25 



10 Equilibrium profile between two headlands . . . .* 27 



11 Two theoretical forms of shoreline equilibrium of 



river deltas 29 



12 Differences on shoreline configuration due to onshore- 



offshore transport near a groin 32 



13 Notation for the two- line theory 34 



14 Evolution of shoreline and offshore beach limit near a 



groin 38 



15 Effect of wave diffraction 41 



16 Hooked beaches 43 



17 Indentation ratio for a range of wave obliquity 43 



18 Orthogonal arrays for numerical scheme of hooked bay 45 



19 Orthogonal arrays for numerical scheme of hooked bay 46 



20 Semi logarithmic profiles 47 



21 Relationship between shoreline retreat and change in 



mean water level 48 



