0.10 

 0.090 

 0.080 

 0.070 

 0.060 



0.050 

 0.040 



0.030 

 0.025 



0.020 

 0.015 



d s 

 -^- 0.010 



<3 T 0.0090 

 0.0080 

 0.0070 

 0.0060 



0.0050 

 0.0040 



0.0030 

 0.0025 



0.0020 

 0.0015 



0.0010 



6 7 8 9 10 



Figure 4. Empirical curves of minimum wave steepness 

 for complete wave breaking at a specified 

 smooth slope and relative depth. 



22 



