Period (s) 



+ 0.4 



>. 

 o» 



<i> 



c 

 LlI 



a> 



> +0.2 



o 



o 

 o 



2.5 



0.0 



0.0 



0.2 



0.4 0.0 



Frequency (Hz) 

 Savannah Coast Guard Light Tower 



0.2 



0.4 



Period (s) 



0.4 



>» 

 a> 

 v_ 

 <u 



LlJ 



> 

 o 



o 



0.0 



0.2 



0.4 0.0 



Frequency (Hz) 



0.2 



0.4 



Nags Head, N. C. 



Figure 3-6. Typical wave spectra from the Atlantic coast. (The 

 ordinate scale is the fraction of total wave energy in each 

 frequency band of 0.011 hertz (1 hertz is 1 cycle per 

 second) . A linear frequency scale is shown at the bottom 

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

 each graph) . 



3-13 



