- 104 - 



■ mean bf bt atm bf 



(4.35) 



where \f = 55.6 Ib/cu.ft. 

 i^j^f = 18.5 inches 



^atm = 1^-7^ Psi 



P^^ = 0.34 psi 



bf 



y = 62.23 Ib/cu.ft. 



A value of 5,95 feet is expected from the difference of the tank 

 water depth, 10.2 feet, and the sensor's height above bottom, 4.25 

 feet. 



An estimate of the wave direction was attempted from the 

 signal of dP3 using wave parameters as predicted by stream function 

 theory. The average magnitude of the channel's signal was estimated 

 and the maximum differential pressure expected along the wave ray 

 calculated from stream function theory. The angle between the wave 

 ray and the dP3 arm is then: 



B = cos' 



[dP/dx]measured 



[dP/dx]max 



(5.16) 



The wavenumber k was calculated using stream function theory for a 5 

 second wave in the water depths stipulated earlier. The pressure 

 response function Kp was similarly estimated for a depth equal to the 



