Y ti t l t 



E, = — - = 6.65 x 10 7 joules 



t 



».-(■ 



8 x 6.65 x 1Q 7 \ 

 10,055 x 37,600/ 



H = 1.19 meters (3.89 feet) 



(c) The slope is defined by 



( d l ~ d 2 ) _ (2,500 - 100) 

 ~~l 24,000 



= 0.1 



From equation (172), 



4ird l 4tt (2,500) 



2 = = = 1.67 



1 L X S 187,800(0.1) 



From Figure 20, where cL/(L = 25 



H 



— = 0.55 

 H. 



H = 0.55 H. = 0.55(0.6) = 0.33 meter (1.08 feet) 

 r ^ 



which indicates that a linear slope gives a higher reflected wave 

 and lower transmitted wave than a slope defined by equation (176) . 



************************************ 

 4. Experimental Measurements . 



Bourodimos and Ippen (1968) obtained experimental results for waves 

 passing from deep water to shallow water over a slope where S = 0.125. 

 Their experimental curves for K^ and K r as functions of dj/d2 are 

 given in Figure 23. Gagnon and Bocco (1962) obtained measurements for 

 waves passing from shallow water to deep water at an abrupt transition 

 in depth. However, their results indicated a fairly constant value of 

 |K r | ~ 0.2, including the case where dj = d 2 (i.e., where no transition 

 occurs) . 



79 



