UNCLASSIFIED 



SECURITY CLASSIFICATION OF THIS PAGE(TWi«n Dmtm Bnland) 



The profile in neither experiment attained an equilibrium shape, even 

 though the shoreline position was stabilized by backshore renourishment . 



For approximately the first 50 hours (or before the shoreline stabiliza- 

 tion), the shoreline recession rate in the 6-foot tank increased from 0.06 tc 

 0.14 foot per hour coincidently with a 10° Celsius temperature drop. The 

 shoreline erosion rate in the 10-foot tank was 0.08 foot per hour, and the 

 temperature was between 25° and 30° Celsius. The difference in recession 

 rates between the two tanks is possibly due to differences in the distance 

 from the generator to the initial shoreline (100 feet in the 6- foot tank and 

 61.7 feet in the 10-foot tank) or to temperature differences. Lateral 

 variations occurred in the rate of development of the inshore zone in the 10- 

 foot tank that did not occur in the 6-foot tank, indicating that the tank 

 width may also have affected the profile development. 



UNCLASSIFIED 



SECURITY CLASSIFICATION OF THIS PAGEfWhe 



