and the correction for a variance coefficient at this period is applied as: 



Uncorrected Variance Coefficient 

 (0.9955)^ 



9. In general, the wave statistics errors are less than 3 percent as 

 specified by the manufacturer for wave periods less than 12 sec for 1983. 

 However, data for prior years show a 5 percent error. Errors of this mag- 

 nitude are generally tolerable for most engineering applications, although it 

 is worthwhile to know the error bounds for some design considerations. When 

 investigating coastal phenomena involving very long period swells of 15 sec or 

 greater, such as surf beats and sediment accretion caused by swell waves, 

 these corrections will produce substantial increases in the magnitudes of the 

 wave parameters, and it is recommended that the corrections be used. For sta- 

 tistics based on multiple years of data, the manufacturer's specified error is 

 recommended for use in estimating the correction. 



A6 



