FIGURE 25 "Displacement" power spectra computed from the "accelerati< 

 spectra shown in figure 19. 



observed on the open ocean. 



This swell is directional and can be satisfactorily measiired by an 

 array of gravimeters placed on the ice. The major portion of the wave energy 

 is probably derived from storms. However, cross-correlation between micro- 

 pressiire waves and ocean waves at a point outside the major generating area 

 suggests that additional energy is imparted to ocean waves outside of this 

 area. Cross-correlation of several micropressure and wave records over an 

 interval when the average local s\irface wind was changing indicates that maxi- 

 mum coherence (and pres\xmably maximxim coupling) is a function of wind direction 

 This in turn suggests that local surface characteristics of the ice influence 

 the amount of energy coupling for a given area and wind direction. 



If it is assumed that micropressure wave spectra everywhere over the 

 Arctic Ocean are similar to the ones measvired at ARLIS II, varying primarily 

 as a function of wind velocity, then the total energy of a water wave at a 

 given point is probably related to an integration of all the atmospheric 

 energy surrounding that point. This would explain the continual wave inter- 

 ference observed at the tripartite array of Sytinskiy and Tripol'nikov (I96U). 

 In addition to observing waves generated by a stornn, there woxild also be 

 observed the effects of the micropressure wave system acting like so many small 

 storms, each contributing energy to the water. 



Waves from distant sources show typical dispersion patterns, the long 



