Period (s) 



10 



2.5 



T = 6.0 sec 



0.0 



0.2 



0.4 0.0 



Frequency (Hz) 



0.2 



0.4 



Period (s) 



>« 



a> 



c 

 UJ 



> 



$ 



o 

 o 



0.0 



0.2 



0.4 0.0 



Frequency (Hz) 



0.2 



0.4 



Figure 3-39 . 



Typical hurricane wave spectra from the Atlantic coast of the 

 United States. (The ordinate scale is the fraction of total 

 wave energy in each frequency band of 0.0011 hertz (one hertz 

 is 1 cycle per second.) A linear frequency scale is shown at 

 bottom of each graph and a nonlinear period scale at top of 

 each graph.) 



3-78 



