LIST OF SYMBOLS 



a = — cosech(kd) semi-amplitude of displacement at the bottom 



2 



A L 



t 



A * 



_ A 1 A 3 

 A 2 A L 



B * 



2A 2 



c lVi 



c 



=-0.65 



'1' 2 



g 





h = 



2D 



H 

 k = 



2TT; 



> 



V 



K 2 



from irrotational theory. 



A , A A , A A constants of proportionality. 



constant of proportionality 

 constant determined experimentally 



constant determined experimentally 



exponent of f (y) from original smooth plate 

 measurement. 



coefficients 



c (y) concentration distribution of solid particles 



in a state of motion within the bed layer 



c average value of c (y) 



o 



C coefficient of lift 



d depth of water 



D bed material grain diameter 



e base of natural logarithms 



f (y) , f (y) empirical functions describing the velocity 



distribution and the phase shift in the boundary 

 layer respectively 



gravitational acceleration 



thickness of bed layer 



wave height (from crest to trough) 

 wave number 

 empirical constants 



i, distance traveled by a solid particle in one 



realization of motion. 



L = L + L' lift force - total 



