BROWNING: ENVIRONMENTAL FACTORS AFFECTING LOW FREQUENCY 

 PROPAGATION IN THE OCEAN 



DIFFRACTION 



J i j I I I I ' I 



J I I I I I I I 



0.2 0.5 1.0 2.0 5.0 



FREQUENCY (kHz) 



10 



Figure 6. THEORETICAL SOUND CHANNEL ATTENUATION 



776 



