135. Pier profiles. Between April and September, the profiles under 

 the pier had a consistent shape and only about a 1-m variation seaward of the 

 local msl beach intercept (Figure 30). During the winter months January 

 through March and October through December, the profiles exhibit a much more 

 varied shape and large changes all along the profile (Figure 31). 



136. Figure 32 shows the magnitude of the change in elevation as a 

 function of the distance along the pier. The development and movement of 

 bars account for the largest of the changes. 



137. The weekly profiles from both sides of the FRF pier presented in 

 Appendix C show when the bar system developed, how it moved, and when it was 

 no longer present. As the bathymetry shows, the pier's influence causes these 

 profiles to be considerably different from those farther than 150 m north 



or south of the pier. 



138. The variations of bottom elevations as a function of time through- 

 out the year at a select number of stations are also presented in Appendix C. 

 Large changes over a short time are generally attributable to storms which 

 cause rapid bar movement and large changes in bathymetry. Gradual changes 

 over a season are associated with periods of varying wave conditions and re- 

 flect accretional or erosional periods. The largest changes occur nearshore 

 where bar movement is the greatest. 



Photographic data 



139. In this section, photographic data used to document the beach 

 condition in the vicinity of the FRF are described. Figure 33 shows samples 

 of daily photographs of the beach taken from the pier looking both north and 

 south. The cut seen in the 20 August photograph is a summer feature and 

 occurs after periods of persistent southerly winds. During 1980, the cut was 

 less dramatic than in prior years and was evident for only a short time in 

 late August. 



140. In addition to the daily beach photographs taken, quarterly aerial 

 photographic missions were flown. Table 9 is an inventory of the photography 

 obtained during 1980, and Figure 34 is a sample photographic negative showing 

 the FRF pier on the I6th of July. 



Sediment Data 



141. In this section, results of sediment analyses of sand samples 

 taken from the foreshore throughout the year are presented. In addition, re- 

 sults are presented from one survey in October along a 30-km-long transect 



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