SYMBOLS AND DEFINITIONS— Continued 



r ls 



<out 



jetty length 

 •weir crest length 



longshore wave energy flux factor 



Q F easterly volumetric longshore transport rate 



Q gross volumetric longshore transport rate; total amount of sand 

 passing a point on the beach during a specified interval 



Q. volumetric sediment inflow rate to a control volume 



Q T total longshore sediment transport to the left for an observer looking 

 seaward 



Qn volumetric longshore sand transport rate 



Qn volumetric longshore sand transport rate along a straight beach (sand- 

 bypassing rate around a groin when t = °°; Pelnard-Considere model) 



Q t volumetric net longshore transport rate 



Q* empirical coefficient used in equation to determine wave overtopping 

 rates 



volumetric sediment outflow rate from a control volume 



Q R total longshore sediment transport to the right for an observer 

 looking seaward 



q instantaneous longshore sand transport rate at a point on the beach 

 •discharge of water over weir per unit of weir crest length 

 •wave overtopping rate per unit structure length for waves approaching 

 perpendicular to a structure 



q t average value of the longshore sand transport rate at a point on the 

 beach 



q' reduced wave overtopping rate per unit length of structure for waves 

 approaching at an angle 



R runup height above the SWL (runup that would occur on a structure if 

 the structure crest were above the limit of wave runup) 



T wave period 



t time 



t n time after n intervals 



t initial time 



