Appeiia 

 the form 



ix I: Tne solution to the equation of motion, ihe equation of motion takes 



A||t - 'if " ■ ik 



The general solution is 



IT 0.2 



VTaZ 





where 



a-^a 



The surface boundary condition 



whe.i applied to the general solution gives 



dp 





The bottom boundary condition that 



W. 



gives 



^---lo -- O 



16 



\/rct.k 



