In figures 8 and 11, in contrast to the previous example, 

 the more turbid water was near the surface and associated 

 with the warmer water. The maximum turbidity occurred 

 on the shallow thermocline which is the most frequent tur- 

 bidity structure found in this area. 



In figure 12 still another type of correlation between 

 turbidity and temperature is shown. The two large patches 

 of turbid water lay in the troughs of the long-period internal 

 waves, undoubtedly related to the tide. The maximum 

 turbidity in general occurred along the thermocline. 



Figure 11. Time -depth plot of water transparency at the 

 USNEL tower on 2-3 August 1960 and the corresponding 

 temperature structure of the water (heavy lines) in degrees 

 Fahrenheit. Transparency less than 30 per cent is shaded. 



Figure 12. Time-depth plot of water transparency at the 

 USNEL tower on 4-5 August 1960 and the corresponding 

 temperature structure of the water (heavy lines) in degrees 

 Fahrenheit. Transparency less than 50 per cent is shaded. 



16 



