0.4 0.6 



Grouping Poromefer, G 



Figure 33. Ratio of third highest wave height to significant height 

 versus grouping parameter at Columbia Light. Dashlines 

 indicate range expected from Rayleigh distribution. 



The highest wave height in each South Pass record, scaled by significant 

 height, also shows a tendency to increase with increasing values of G (Fig. 

 34). The highest height, equal to 2.1 times the significant height, coincides 

 with the highest value of G. Plots of extreme wave height versus G for the 

 second and third highest waves in each South Pass record are given in Figures 

 35 and 36. 



2.0 - 



0.4 0.6 



Grouping Parameter, G 



Figure 34. Eatio of highest wave height to significant height versus 

 grouping parameter at South Pass, 1000 to 1600 c.d.t., 17 

 August 1969; 1,200-second records analyzed for 18 cases. 

 Dashlines indicate range expected from Rayleigh distribution. 



55 



