The results generally cluster into two categories. The first category includes the 

 formulations of Komen, Hassehnann, and Hasselmann; Miche; and Resio (for T^ = 

 1.4 s), which show little or no dissipation for almost all runs and thus significantly 

 overpredict the wave height through the gauge array. In Figures 15 and 17, the 

 Komen, Hasselmann, and Hasselmann and Miche curves generally overlay each 

 other and predict no dissipation. Even in ihe cases with the highest wave height 

 and strongest current (Figures 16 and 18), the Komen et al. formulation predicts 

 little or no dissipation, whereas the Miche criterion predicts some wave height 

 decay. 



The second category includes the formulations of Battjes-Janssen, the present 

 study (Equations 18 and 19), and Resio (for Tj, = 0.7 s). These formulations fall on 

 the lower portions of the figures and agree well with the measured wave heights for 

 the twelve cases, with the exception of cases with 7), = 0.7 s and t/ = 14 cm/s 

 (Figure 17). The reason for the poor agreement wifii this case is unclear. The 

 correlation coefiQcient for the Resio formulation (both peak periods) was 0.71, for 

 the Battjes and Janssen formulation 0.86, and for the present study formulation 

 0.87. Therefore, in spite of the large scatter between the Battjes-Janssen dissipation 

 relationship and the data, the prediction of wave height is generally good, essentially 

 equivalent to the expression developed in this stucty. 



T=1.4 s, H=5.5 cm, U=14 cm/s 



Present Study 



Resio 



Battjes/Janssen 



Komen et al. 



Miche Limit 



■ Measured 



100 



200 



300 400 



X (cm) 



500 



600 



700 



Figure 15. Wave height transformation for 7), = 1.4 s, H^ = 5.5 cm, and 

 U= 14 cm/s 



Chapter 4 Results 



25 



