LIST OF FIGURES 

 No. Page 



1 Schematic illustration of a hypothetical equilibrium beach 



profile 8 



2 Definition sketch for geometric properties at a specific 



location as related to shoreline change 10 



3 Comparison between experimental and theoretical shoreline 



evolution 13 



4 Definition sketch for the two-line theory 14 



5 Two-line theory solution for a groin system 15 



6 Shoreline evolution between two groins initially filled with 



sand 16 



7 Shoreline evolution of an initially rectangular beach fill 



exposed to waves arriving normal to shore 19 



8 Percentage of sand volume lost from a rectangular fill as a 



function of dimensionless time 22 



9 Shoreline evolution when sand is supplied at x = to 



maintain a specific beach width y 23 



o 



10 Shoreline evolution of an initially semi-infinite 



rectangular beach 24 



11 Shoreline evolution of a rectangular cut in an infinite 



beach of width y 25 



12 Shoreline evolution of an initially triangular beach 27 



13 Comparison between analytical solution with the linearized 



transport equation and numerical solution with the original 

 transport equation for a triangular beach fill (for height-to- 

 width ratios of 1.0 and 0.5) 28 



14 Shoreline evolution of an initially trapezoidal beach form 29 



15 Shoreline of arbitrary shape approximated by N straight 



lines 30 



16 Semicircular-shaped beach approximated by a polygon 31 



17 Shoreline evolution of an initially semicircular beach 32 



18 Definition sketch for a circular segment-shaped beach 33 



