+ 0.4 



iiJ 



e 

 > 

 o 



o 

 o 



+ 0.2 — 



0.0 



OjO 



Period (Seconds) 



2.5 10 



0.2 



0.4 0-0 



Frequency (Hertz) 

 Savannah Coast Guard Light Tower 



2.5 



2 



0.4 



0.4 



10 



liJ 



> 

 o 



o 

 I- 



0.2 



0.0 ^-« 



0.0 



Period (Seconds) 



2.5 10 



T = 10.8 Sec 



H, 



6.9 Ft 



Frequency (Hertz) 



Nags Head, N.C. 

 Figure 3-6. 



2.5 



0.2 



4 



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, (one Hertz is one cycle/second). A 

 linear frequency scale is shown at the bottom 

 of each graph and a nonlinear period scale 

 at the top of each graph. 



3-14 



