information obtained from the papers of the respective authors. 



a. Putnam, Munk, and Traylor Laboratory Observations (COUNT 1-37) 



At the University of California at Berkeley, longshore current 

 velocity was measured by timing the travel of potassium permanganate (KMn04) 

 dye on the central 10-foot section of a 39-foot (?) test beach. The -breaker 

 angle was obtained from vertical photographs, and wave height was measured 

 by electric point gages. 



A fixed, artificially roughened, p I ane beach was used in these experi- 

 ments. For numbers I through 14, the beach surface was roughened by bonding 

 natural sand to it. For numbers 15 through 28, the beach was covered with 

 sheet metal or smooth cement. For numbers 29 through 37, the beach was 

 covered with 1/4-inch gravel bonded with a thin grout. 



b. Saville Laboratory Observations (COUNT 38-46) 



At the University of California at Berkeley, additional long- 

 shore current data were obtained during a study of sand transport. The 

 travel of KMn04 dye along a 10-foot segment of the 60-foot beach was timed 

 to obtain velocity. Wave heights offshore were measured with point gages. 

 Offshore of the surf zone, the beach was concrete,- and inshore it was 0.3 mm 

 sand. The slope listed in the table (0.10) is that of the concrete, but the 

 slope in the surf zone may have been lower. 



Breaker angle (THETAB) and breaker height (HB) were not measured, but 

 the theoretical values in deep water (THETAO and HO) were computed from 

 sma I l-ampl itude wave theory. THETAB and HB were computed in this study 

 for the table using refraction graphs (Johnson, O'Brien, and Isaacs, 1948) 

 and ( Le Mehaute, 1961). The zero value of VMEAS in observation number 46 

 (SAVL 9) is for a run in which little net longshore current was observed. 



c. Brebner and Kamphuis Laboratory Observations (COUNT 47-187) 



These data were obtained from a model study at Queens Univer- 

 sity, Kingston, Ontario, Canada. THETAB and HB were not measured, so the 

 values listed in the table were also computed by using refraction graphs 

 as for Savi lie's data. Velocity was measured by timing the travel of an 

 immiscible, neutra I -density fluid along the beach between 15 and 20 feet 

 from the upstream wall. The concrete beach was at least 30 feet long and 

 roughened by indentations spaced on one-inch centers. Offshore wave 

 heights (not in table) were measured with an electric point gage. 



d. Galvin and Eagleson Laboratory Observations (COUNT 188-225) 



At the Massachusetts Institute of Technology, Hydrodynamics 

 Laboratory, wooden floats and a current meter were used to measure long- 

 shore current velocity. The listed velocity is that observed at 18 feet 

 from the upstream wall but considerable additional data are available on 

 the two-dimensional velocity distribution in the surf zone, as well as 



