3<H 



JAN-MAR 85 

 APR-JUN 85 

 JUL-SEP 85 

 OCT- DEC 85 



3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 12.0 14.0 16.0 

 PERIOD, s 



1.0 



Figure 16 



Seasonal wave period distributions for 

 Gage 625, 1985 



December 53 percent were from the south, 5 percent shore normal, and 42 per- 

 cent from the north. 

 Present versus past years 



52. In general, wave heights during the year were lower than those dur- 

 ing past years. However, the highest wave conditions, to date, were measured 



during Hurricane Gloria on 27 September when the H exceeded 6.1 m 



6 r mo 



(Gage 630), with an associated wave period over 14 sec. The annual distribu- 

 tions for Gage 625 are shown in Figure 18. Heights over 2 m occurred almost 

 4 percent less frequently during 1985 primarily because of a very mild winter, 

 as shown in Figure 19. With the exception of fewer 10-sec and more 8-sec 

 periods, wave periods were nearly identical (Figure 20). 



53. Wave directions, on the other hand, were somewhat different from 

 those of other years, as emphasized by Table 6 and Figure 17. Table 6 shows 

 the resultant (vector averaged) wave height and direction. As can be seen the 

 annual direction is normal to the pier (oriented at 70 deg relative to true 

 north) during 1985, while there has been more of a northerly tendency during 

 prior years. With the exception of September, wave directions were predomi- 

 nantly from the south from March through October 1985. 



37 



