Recall, 



L = -^ — = deepwater wavelength in meters 



(eq. 2-8a) 



and 



L C ^ /2Trd 

 — = — = tanh I— 



o o \ 



(eq. 2-11) 



Typical refraction-shoaling calculations are given in the tabulation 

 below. Calculations for various directions and for a range of periods follow 

 (see Tables 8-5 and 8-6). 



The following tabulates the results of example calculations for waves 

 between 150 and 179.9 degrees from North (angle between direction of wave 

 approach and normal to the shoreline in deep water = a = 45 degrees) ; d = 

 12.0 m . 



Column 



Source of Information 



(2) 

 (3) 

 (4) 



(5) 



(6) 



From equation (2-8a). 



12.0 m divided by column (2). 



Equation (2-44) or Table C-1, Appendix C. 



Table C-1, Appendix C: — = tanh {-j- 



Equation (2-78b) 



cos a \l/2 



(7) K =' 



r \ cos a 



(8) 



Column (4) times column (7). 



K K can also be obtained from Plate C-6 , Appendix C. 

 s r 



8-34 



