APPENDIX H: NOTATION 



a Length (m) 



A Amplitude of periodic beach cusps (m) 



2 

 A Cross-sectional periodic beach area (m ) 



A, B Constants in general functions of the Laplace transform variable 



B Length of shadow region downdrift of a groin (m) 



Cg, Wave group velocity to breaking point (m/sec) 



D Depth of closure (m) 



erf Error function 



f(x) Arbitrary initial shoreline shape (m) 



2 

 g Acceleration of gravity (m /sec) 



h Constant 



H , Significant breaking wave height (m) 



i Integer number 



ierfc Integral of the error function 



k Slope of a line segment 



K Nondimensional constant 



L Geometric length (m) 



L{y} Laplace transform of a function y 



L Nondimensional groin length 



m Integer number 



n Integer number 



N Number of solution areas or reaches 



p Pitch height of a circle segment (m) 



P Loss percentage from a beach fill 



q Sand transport rate per unit length of beach from a source or sink 

 3 

 (m /m/sec) 



q Constant sand discharge from a river acting as a point source 



3 

 (m /sec) 



q R Time variable sand discharge from a river acting as a point source 



(m /sec); constant sand discharge from a river with a finite mouth 



(m /m/sec) 



q Amplitude of sand discharge from a river acting as a point source 

 2 



(m /sec) 



s/e 



HI 



