I5i- 



C » 



- 



o -p 



- 5 



-10 



-15 



Jon. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 

 Figure 45. Seasonal change in MSL position at Boca Raton. 



I 0.5- 



g -0.5- 



-1.5 



Jon. Feb. Mar. Apr., Moy June July Aug. Sept. Oct. Nov. Dec. 

 Figure 46. Seasonal change in subaerial beach volume at Boca Raton. 



73 



