Xm 



200.0 



100.0 

 80.0 



60.0 



40.0 

 30.0 



20.0 



and 



Ym 

 dc 



10.0 

 8.0 



6.0 



4.0 

 3.0 



2.0 



1.0 



10° 15° 20° 25° 30° 35° 40° 45° 

 a 



For 



Figure 2-70. Solution of equations for trapped reflected waves with 

 angle a shown in degrees (from Camfield, 1982). 



m = 0.03 and dg = 2.0 meters (6.5 ft) 



X = 4.5(2.0)70.03 = 307 meters (997 ft) 

 The water depth at that distance from shore is 



d = dg + mX = 2.0 + 0.03(307) 

 d = 11.2 m (36.8 ft) 



2-128 



