(c) Duration (t) of Fastest-Mile Wind. 



1 km 60 min I 1 mile 60 min 



t = TT—TT r, r X r I TT-T TT X 



U (km/hr) hr \U (mph) 



hr 



t = duration of wind in minutes 



100 /so 



U imph or Km/hr) 



zoo 



Since the durations under consideration here are not sufficiently long to 

 generate maximum wave conditions, Thom's wind data will result in a high 

 estimate of wave heights and periods. The dashed line on Figure 8-13 will be 

 used to establish frequency of occurrence of given wave conditions; calculated 

 wave height recurrence intervals will be conservative. 



8-23 



