Z..V 



1 i i — T 



No. of data points 



1.5 



N = 1660 









*5 X. 





/ \ 





/ s 





/ . \ 





/ . N 





/ • \ 



1.0 



- / -• 7 -\ 





' •: . • • ^ 





' •.••.,.•» 









•■■•':.•■ •.^•\ 





' n • ' •.. •■■" :, -< -\ 





• •;.■?■«'>: -\ 



0.5 



■ ." -.x*fev:\ 





"■"• '• •'' • Zit' ' \ 









..•; ^^^^^SUJ^^ 







L 1 ' ' 1 1 



-5 



3.0-, 



% 2.5H 



is 2.0- 



1.5- 



1.0- 



0.0- 



5 10 

 Depth (m) 



15 



a. Depth changes at Oarai Beach, Japan 



10 



I 



15 



20 



~1~ 

 25 



30 



35 



~~ r~ 



40 



45 



Mean Depth (ft-NGVD) 



20 



"1 

 50 



b. Depth Changes at Oceanside, California 

 Figure 8. Empirical determination of the depth of closure 



60 



