The average size parameters for the different beach zones in each of 

 the three transects are shown in Table 6. The swash and berm zones above 

 the swash zone at time of sampling are combined, because the lower limit 

 of the berm zone was not established for this investigation. These data 

 show in a very gross fashion that the mean size and median diameters tend 

 to increase from the shoaling zone toward the swash-berm zone in the 

 three transects, although the differences found are not very large. Mz 

 and M(j do not change significantly between the breaker and swash zones at 

 the 15th Street transect. Sorting in all transects is poorest in the 

 breaker zone and best in the swash-berm zone, although the differences 

 between zones are not very large except possibly at the Pendleton Line 

 transect . 



The average M z and Md for samples collected from the top of the swash 

 zone are smaller than those for the combined swash-berm zone. This in- 

 dicates that these parameters are smaller in the swash zone than in the 

 berm zone since the data of Table 5 generally show higher values for the 

 samples farthest inshore from the breaker zone. 



Analysis of the data on size parameters for samples taken in the 

 vicinity of Rudee Inlet is presented elsewhere (Harrison, Krumbein, and 

 Wilson, 1964). 



Reynolds Number and Drag Coefficient 



Transects. The data for Reynolds number and drag coefficient for 

 the infinite fluid of the settling tube are summarized in Tables 4 and 5, 

 and Figures 7, 8, and 9. (Data for additional breaker zone samples appear 

 in addenda to Table 5.) It is to be noticed that the curves for R e follow 

 almost perfectly the pattern of the M z curves. This is as expected since 

 the only variables in the equation used to calculate R e were the mean 

 diameter of the sample and the corresponding settling velocity, the 

 kinematic viscosity of the water being constant. Thus, R e is generally 

 smallest in the shoaling and swash zones and highest in the breaker zone 

 and toward the berm zone. Cd is a function of R e in the range of Re found 

 in our study. In this range Cp varies inversely with Re. Therefore, an 

 almost perfect negative correlation exists between Cq and R e , with lowest 

 drag coefficients in the breaker and berm zones and highest in the shoal- 

 ing and swash zones. 



The R e values for the samples from the three transects are quite 

 small, most of them being smaller than 10. Very high Reynolds numbers 

 were found only in the breaker zone samples collected as part of the swash- 

 zone profiles. Related to these generally low R e values are relatively 

 high drag coefficients, as expected from the inverse relationship involved. 

 It is to be noted that the kinematic viscosity of the sea water on the 

 sampling day (1.91 x lO - ^ ft 2 /sec) was relatively high and this contributed 

 significantly to the low Reynolds numbers found. 



