Appendix C 
Sediments 
Nineteen sediment samples were collected along profile line 230 on 
15 October 1990. Beach samples were scraped from the top layer of the beach 
face. Offshore samples were collected with a clamshell grab sampler by a 
person atop the Coastal Research Amphibious Buggy (CRAB) deck. The 
samples were then washed, dried, split, and sieved for analysis of grain size and 
sorting. The sieving was done with a sonic sifter, which sorts the sediments 
through small diameter sieves using high-frequency vibrations. 
The size distribution of each sample, along with its relative position along 
the profile, are shown in Figure C1. The overall nature of the cross-shore size 
distribution is typical of sediments at the Field Research Facility with a wide 
range in sediment size on the beach face and in the inner bar/trough region. 
Seaward of the inner bar, the sediment is composed of fine, well-sorted 
sediments. Detailed tables and plots describing each sample are shown in 
Figures C2 through C20. 
Appendix C Sediments 
Ci 
