PERIOD. HOURS 



0.05 0.1 .05 0.1 



FREQUENCY, CYCLES/HR. FREQUENCY, CYCLES/HR 



Figure 35a. Power density .spectral estimate, 54-29N, 54-30W, 37 m. level, 22 July-4 August (Left). 

 Figure 35b. Power density spectral estimate, 54-30N, 54-32W, 37 m. level, 22 July-4 August 1970 (Right) . 



50 



