The last column in Table 5 presents the product of Reynolds number 

 and drag coefficient for most of the samples. In all cases they are more 

 than the value of 24, given by Rouse (1937) for particles within the range 

 of Stokes' relationship but seldom more than 48, or twice 24. Thus, 

 owing to the relatively high viscosity of the sea water on 25 March 1963, 

 the sand grains exhibited dynamic properties not too dissimilar from those 

 to be expected for finer grains. It is interesting to note that this 

 product (Re x Crj) is almost the same for particles with shape factor of 

 0.7 and 1.0 up to Reynolds numbers of about 30 (Table 1). 



The data for average Reynolds number of the different beach zones in 

 the three transects appear in Table 6. These indicate that there is little 

 or no difference in Reynolds number in the shoaling zone along the whole 

 length of the area sampled. Several "t" tests showed that the differences 

 were not significant (P<0.01). Although differences between the breaker 

 zones at the 3rd Street transect and the 15th Street and Pendleton transects 

 appear to exist, "t" tests failed to show any difference between the three 

 transects (P<0.05) because of the large variances involved. Differences 

 between the swash zone at the 15th Street transect and at the other two 

 transects could be considered different in spite of the very few samples 

 taken. Nevertheless, it should be kept in mind that a great variability 

 among samples is characteristic of the swash zone (Krumbein and Slack, 

 (1956) and, therefore, attribution of significance to this difference 

 could be unfounded. Definite differences, corroborated by "t" tests 

 (P<0.05), are present between the swash-berm zone at the 15th Street 

 transect and the other two transects, while the difference between the 3rd 

 Street and Pendleton transects is not significant (P<0.01). 



Rudee Inlet Area. Figure 10 presents Reynolds number isolines for 

 the stations in the vicinity of Rudee Inlet. The left-hand vertical axis 

 demarcates the 3rd Street fishing pier. The dotted lines and arrow at the 

 400-foot mark on the lower horizontal axis indicate the approximate 

 position of the inlet channel and direction of water flow at the time of 

 sampling. Isolines R e = 9 and R e = 13 were not extended beyond their limits 

 toward the 3rd Street pier because data collected from the pier a short time 

 later indicated values much lower than 9 and 13. Thus, it may be assumed 

 that the inshore and offshore components of these isolines become con- 

 tinuous on the south side of the pier. It is to be noted that R e values 

 inside isoline R e = 13 can be quite high; e.g., 54.78 at station S-13. 



Isoline R e = 9 can be considered to approximately demarcate the 

 boundaries of the effect of the inlet outflow on the characteristics of 

 the beach sediments. Reynolds numbers of 5 and 6, as shown by samples from 

 stations outside of isoline R e = 9, are expectable since most of the 

 stations were beyond the zone of significant breakers. This conclusion is 

 supported by the data collected at the 3rd Street pier stations (Figure 8). 

 Thus, the data show clearly the effect of the Rudee Inlet outflow in alter- 

 ing the normal pattern of distribution of sediment properties along the 

 beach strip studied, as reflected by the distribution of Reynolds numbers. 



14 



