Elapsed Time (hr] 



Figure 14. Location of berm center of mass (Xq M "\ through time 



Net Cross-Shore Sand Transport Rate 



61. Integration of the equation of sand conservation along the profile 

 between two surveys yields the net cross-shore transport rate that occurred 

 between them: 



q(x) = 



f* h 2 (x) - h 1 

 J fc 2" fc 1 



(x) 



dx 



(2) 



in which 



q(x) = cross-shore sand transport rate, m^/m/sec 



x = horizontal coordinate with origin at the 

 initial still-water shoreline, m 



x = location at which no profile change occurred, m 



hp(x) = depth along the profile at time t2» m 



h.,(x) = depth along the profile at time t«, m 



tp = time of later profile survey, sec 



t, = time of earlier profile survey, sec 



34 



