102 



Crest of a shallow water wave 

 auee 1 



-0.4 -0.3 -0.2 -0.1 oO.I 0.2 0.3 0.4 



X 10-^ gauge 2 



5r 



-0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 



Figure 5.18: Free surface boundary condition errors for a shallow 

 water wave at order 3 



Crest of a shallow water wave 



-0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 



Figure 5.19: Free surface and velocities at the center of the array 

 for a shallow water wave at order 3 



