Equation 25 is applicable for conditions in which the ratio of wave amplitude 

 to bed roughness exceeds 1.7. The data and curve fit to the data are shown in 

 Figure 5 . 



|3 





— r 



1 i i pin 



1 ] 1 1 | 1 1 II 



— r | i i | 



TTTT 



1 



" 





/* 









- 





/ « 





'_ 



5 



— 





• /* * 





— 





' 





. J:- 







2 



- 









~ 



iot 1 







, /» 







: 



. 



■v 





- 



5 



- 



• 



•A* 





- 









7 • 





_ 



2 







/;• 





- 



.-? 





*\ 



r.- 





" 



IU 





>\ 



LEGEN 



D 



: 



5 





;i 



Kal kanis 



" 







j 



- <^ = 1.68mm ^ Sand 





2 



in 3 





f 



x d, = 2.18 mm > s = 2.6 3 

 • <£ = 2£2 mm J 



- 





if 



— Abau-Seida 



: 













fh 



• <L = 2.61 mm ~] 



• dg = 1.21 mm ! Sand 



: 



5 r 





If 



— 







;■{ 



<L = 030mm /S=2.65 

 * <t = 0.145 mm) 



- 



2 





. ♦ d, = 0.70 mm i Glass 

 11 . S-2.23 



- 







- 



10 



, 



1 , 1 1 ! 1 III 1 1 1 ! ! . 1 III ! 1 III 



\ 1 1 



lO"' 2 5 lO"' 2 5 12 



1/2 f w P u^ 2 ) 



10' 



X= 



(p sr (5-1) d) 



Figure 5. Empirical relation for bed load transport using data 

 of Kalkanis and Abou-Seida (after Hales (1980)) 



Suspended-Load Transport in Unidirectional Flows 



15. Numerous cases exist where suspended load in unidirectional flows 

 is as important as bedload to the overall sediment transport rate. To 

 describe sediment transport dominated by suspended load, one must consider the 

 same parameters used to describe bed- load transport, as well as an additional 

 property of the particle and fluid, known as sediment fall speed. The 



19 



