r ocean 



- 0.50 m 



L 



a.) Preoverwash dune 



=»= 



b.) Original overwash deposit and erosion of seaward face of 

 the original dune — February 



original 



7 — deflated 

 ovensash 

 surfGCS 



00m 



-0.50 

 -0 



c) Partial deflation of overwash deposit end Ammephila recoves 

 (up to 59cm)--Juna 



d.) Differential deflation and accretion-- nsv# duns formed, 

 displaced landward — August 



Figure 45. Model of direct overwash involvement in dune buildi 



ng. 



97 



1 



