range. This was the maximum error allowed and the error varied because the calibration 

 range was different for each gage. 



Measured nearshore water surface oscillation time series are shown in 

 Figures A.4 through A.6 for waves of three significant heights at /i, = 11.9 cm. Figures 

 A.7 through A.9 show wave gage time series for waves of three significant heights at h, 

 = 15.8 cm. Incident and reflected waves were resolved using these time series from the 

 three-gage arrays using the technique of Goda and Suzuki (1976). The technique was 

 modified as per Kobayshi, Cox, and Wuranto (1990) to determine the incident and 

 reflected wave spectra and time series at the shallowest gage. Time series parameters 

 were determined using the zero-upcrossing method. At frequencies containing little 

 wave energy, the reflection analysis technique can yield poor estimates due to low 

 signal-to-noise ratios. These regions are indicated by low coherency in the cross 

 correlation between gage pairs. For this study, the cutoff frequencies were established 

 to maintain the coherence above 0.3 in the cross correlation between gage pairs. The 

 analysis technique was not sensitive to coherence cutoffs higher than 0.3. 



The resolved incident and reflected spectra for time series from the 

 nearshore and offshore arrays are shown in Figures A. 10 through A. 12 for h,= 1 1.9 cm 

 and in Figures A.13 through A.15 for h, = 15.8 cm. Figures A.IO and A.13 show an 

 increase in peak energy density due to wave shoaling between the offshore and 

 nearshore gages and an increase in wave energy for low (/< 0.35 Hz) and high (f > 1.0 

 Hz) frequencies. These figures show that wave energy is being transferred due to 



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