elutriate silt grains. Some -water is drawn by capillarity to the 

 sand surface where it evaporates, cementing the sand into a hard 

 crust. Water table profiles are shown for the ebbing and flooding 

 tides . 



"Influence of the Water Table on Beach Aggradation and Degradation," 



U. S. Grant, Journal of Marine Research, Vol. VII, No. 3, November 1948. 



Large waves provide the dynamic factors in rapid beach erosion, but 

 the wetness or dryness of the beach contributes in an important 

 manner to its erosion or aggradation. A high water table accele- 

 rates beach erosion, and conversely, a low water table may result 

 in pronounced aggradation of the foreshore. A sensitive water 

 table on a beach will have an important bearing on the method of 

 artificial sand replenishment by sluicing. 



40 



