Table 4. Annual bluff and beach volume changes 

 (in cubic meters per meter). ^ 



Profile 



Aug. 1970 



July 1971 



July 1972 



Oct. 1973 



Sept. 





line 



to 



to 



to 



to- 



to 



Total 





July 1971 



July 1972 



July 1973 



Sept. 1974 



Dec. 1974 





1 



-2.5 



-12.5 



-20.1 



1.3 



0.8 



-33.0 



2 



2.5 



-2.5 



-5.0 



-1.4 



-6.7 



-13.1 



3 



-10.0 



-10.0 



-15.1 



-4.8 



-2.3 



-42.2 



U 



-15.1 



-37.6 



-A5.2 



5.6 



0.6 



-91.7 



5 



-15.1 



2.5 



-2.5 



-4.2 



1.4 



-17.9 



6 



7.5 



-5.0 



-10.0 



-21.0 



2.1 



-26.4 



7 



-15.1 







-2.5 



-7.5 



8.7 



-16.4 



8 







-2.5 



-2.5 



-31.8 



-0.3 



-37.1 



9 



-7.5 



-5.0 



-V.b 



-9.0 







-39.1 



10 



-5.0 



-7.5 







-19.8 



4.2 



-28.1 



11 



-2.5 



-5.0 



-10.0 



1.2 



8.5 



-7.8 



12 



-12.5 



-2.5 



-17.6 



-6.8 



8.5 



-30.9 



13 







5.0 



-5.0 



-12.8 



-1.1 



-'.3.9 



14 



2.5 



-7.5 



-20.1 



-4.9 



-1.1 



-31.1 



15 







-12.5 



-10.0 



-10.22 



-14.2 



-46.9 



16 



-5.0 



2.5 



-5.0 



-63.8 



-15.7 



-87.0 



17 



-2.5 



-12.5 



-17.6 



-2.6 



2.0 



-33.2 



Mean 



-A. 7 



-6.6 



-12.1 



-11.3 



-0.3 



-35.0 



Standard 

 deviation 



6.9 



9.6 



10.9 



16.4 



6.8 



23.2 



Median 



-2.5 



-5.0 



-10.0 



-6.8 



0.6 



-31.1 



'vertical datum Is 176.6 meters 

 ^Actual period: December 1973 ti 



IGI.D, as used by Davis (1976). 

 3 September 1974. 



Figure 11. Total volume change for each profile line, 

 August 1970 to December 1974. Vertical datum 

 is 176.6 meters IGLD, as used by Davis (1976). 



26 



