SURVEY A 



SURVEY B 



1 r 



SUBAERIAL UNIT 

 VOLUME 

 CHANGE 



(mVm) 



Cross- Sectional 



Areo Change 



Between Surveys A and B 



(m2) 



X 



Unit Distonce 



Parallel to 



Shore 



(I m/m) 



Figure 12. Definition of MSL shoreline change and above 

 MSL unit volume change (from DeWall, 19 79). 



27 



