magnitudes of the field and laboratory measurements of THETAB and VMEAS, 

 despite the fact that wave heights differ by nearly two orders of magnitude, 



Accurate measurement of longshore currents in the field and laboratory 

 are still needed, particularly measurements of currents produced by condi- 

 tions intermediate between laboratory and ocean wave conditions. The non- 

 uniformity and unsteadiness of longshore currents should be studied under 

 controlled laboratory conditions, including how they are affected by vari- 

 ations in the geometry of the laboratory basin. In future studies, more 

 effort should be made to document the reliability of the experimental 

 procedure and the variability of the data. 



