uao 









n-20-flO 



STATISTICAL PARAMETERS 





PHI 



MM, 1 



FRtnUENCY 



CUMULATIVt 



MEDIAN 



r n 1 

 • Ifl 



MM , 

 . 883 



SIZE 



SIZE 



PERCENT 



PERCENT 



MEAN 



.2fl 



.821 



-I .OU 



2.000 



0.00 



O.OOiiTANDlHD 



DEVIAIIUN 



.'J7 





-.50 



l.«l« 



.6J 



.6} 



SKtWNESS 



1 .»6 





0.00 



1 .000 



U.Ol 



16.64 



KUHTUSIS 



0.74 





.50 



,707 



08,70 



65.34 









1.00 



.500 



6.25 



VI .S'i 









1.50 



.15« 



2.77 



'»«,37 









2.00 



.250 



5.6J 



100.00 









2.50 



.177 



0,00 



100,00 









.lt. «.00 



.003 



0.00 



100,00 









144. In addition to the analysis of foreshore samples collected at 

 regular time intervals, sediment characteristics were measured on one occasion 

 as a function of water depth and distance offshore (Williams 1982). From 27 

 through 31 October 1980, grab-type sediment samples were obtained at 24 sites 

 in a line parallel to the pier from -6.3 m water depths off the pier's end to 

 -32.9 m water depths at the end of the transect some 37 km from shore 

 (Figure 36) . 



145. The 24 sediment samples were visually and microscopically examined, 

 and the primary grain size parameters were derived by analysis using the CERC 

 RSA. The sediments were all fairly similar in color and composition and ranged 

 from very fine to very coarse gray sand. In general, the samples from the 

 -6.3 m contour seaward to about the -17 m contour (Figure 37) were gray, mod- 

 erately well sorted, very fine to fine quartz sand, findings which are in 

 agreement with the 1979 survey (Miller, 1982) of 13 short core samples taken 

 from the shore seaward to a depth of -15.8 m. Sediments at sample site num- 

 ber 14, taken near the crest of the second shoal, contrast the most with the 

 other samples in the transect. The sediment in this sample was medium to very 

 coarse quartz sand with rock fragments and broken shell fragments very similar 

 to typical samples from the beach at the FRF. 



78 



