surrounding the FRF, these lines are located in a region of shore-parallel 

 contours and are sufficiently removed from known pier effects (Miller, 

 Birkemeier, and DeWall 1983). 



5. The beach is composed of a mixture of quartz sand and carbonate shell 

 debris. The carbonate component may be as high as 20 percent. Mean grain 

 size is greatest on the foreshore where it approaches 1 mm, decreasing 

 offshore to 0.1 mm. Sorting improves in an offshore direction. Figure 3 

 illustrates the cross-shore variation in sediment size distribution based on a 

 series of samples taken along profile line 188 on 17 March 1982. 



6. Storm conditions at the FRF are dominated by extratropical northeast- 

 ers during the winter months and occasionally by tropical hurricanes. During 

 the period of study, a number of significant storms occurred, although no 

 major hurricanes passed the area. 



100 200 300 400 500 600 700 800 

 DISTANCE, M 



900 1000 



Figure 3. Distribution of sediment sizes across profile line 

 188 on 17 March 1981 



