3 

 p Density of sand (kg/m ) 



a Wave number of periodic beach cusps (rad/m) 



t Integration variable 



<f> Phase angle 



(jj Angular frequency (rad/sec) 



Subscripts: Denoting various specific values of a variable or various 

 solution areas 



1, 2, 3... 



i, j , m 



H, v 



Superscripts: Denoting various specific values of a variable or various 

 solution areas 



1, 2, 3... 



a, b, m, v 



R, L 



Mathematical symbols 



d Differentiation 

 8 Partial differentiation 

 Absolute value 



H3 



