X b Width of surf zone , m 



y Shoreline position, m 



Ydiff Shoreline position difference, m 



y G1 Length of groin on left side of cell 1, m 



y GN Length of groin on right side of cell N, m 



y LT Width of littoral zone, m 



Y add Added shoreline width of a beach fill, m 



Y diff Difference in calculated and measured shoreline positions, m 



tan fi Average nearshore bottom slope, deg 



7 Wave breaking proportionality constant 



c Calculation scheme stability coefficient, m 2 /sec 



€ x Calculation scheme stability coefficient, m 2 /sec 



€ 2 Calculation scheme stability coefficient, m 2 /sec 



6 Angle of wave crest to depth contour, deg 



6 Mean value of sinusoidally varying wave angle, deg 



8 r Angle of wave ray started at Point 1 that will reach a given location 

 (Point 2) , deg 



b Angle of wave crests to x-axis, deg 



bs Angle of wave crests to the shoreline, deg 



D Angle used to determine the value of the diffraction coefficient, deg 



8 G Angle defined by Points 1 and 2 used to approximate angle 6 lt deg 



B s Angle of shoreline to x-axis, deg 



p Density of water, kg/m 3 



p s Density of sediment, kg/m 3 



AQ Change in longshore sand transport rate, m 3 /sec 



At Time step, sec 



AV Change in volume of small beach section, m 3 



Ax Grid spacing alongshore, m 



Ay Change in shoreline position, m 



' Prime; denotes new time level 



E3 



