Time 



Figure 4. Time history of significant wave height and peak spectral 

 period (from band spectrum with 11 frequencies per band and 

 0.0107 hertz bandwidth). South Haven, 28 October 1976. 



17 Oct 



Time 



18 Oct. 



Figure 5. Time history of significant wave height and peak spectral 

 period (from band spectrum with 11 frequencies per band and 

 0.0107 hertz bandwidth), Columbia Light, 17-18 October 1979. 



23 



