27 



The general shape and method of generation are shown by figiu'e 10. 

 The wave velocity for waves of all heights is 



o 

 q: 



o: 

 u 



z 

 I- 

 co 



bJ 



^=Vil=^^ 



12L 



-"'.-.\ 



■ — t"^ — T'J'I 



I — ' o 7< ' 





The radii of the orbits below the surface decrease with depth, their 

 values being given by: 





2xt 



(7a) 



