CONTEHTS 



Page 



FORWORD ill 



INTRODUCTION 1 



METHOD OF ANALYSIS 1 



SURFACE CHARACTERISTICS 2 



SUBSURFACE TEMPERATURES • 2 



SENSIBLE HEAT CHAISES 8 



COEFFICIENT OF THERMAL CONDUCTTTITr ik 



VARIABILITT 17 



SUMMARY 19 



REFERENCES ••••.. 21 



ILLUSTRATIONS 



Figure 1. 



Figure 2. 

 Figure 3. 



Figure k. 



Figure 5» 



Figure 6. 



Figtire 7» 



Figure 8. 



Figure 9* 



Figure 10. 



Figvire 11. 



Figure 12. 



Figure 13. 



Figure ik. 



Diurnal Variation of Sea Surface Temperature, 



OWS ECHO, September 1959 3 



Mean Hourly Temperatures, 2-21 September 1959 • 5 

 Mean Hotirly Temperature Differences Between Sur- 

 face and Subsurface Levels • 6 



Mean Hourly Temperature Differences in Two 



Layers 7 



Mean Diurnal Teniperat\ire Fluctuations at 6o Feet 9 



Physical Processes of the Diurnal Heating Cycle 9 



Mean BT Traces — Sunset to Sunrise ...... 10 



Mean BT Traces — Sunrise to Sunset 11 



Diurnal Salinity Changes 12 



Heat Content ••• 12 



Differential Heating Between Layers ...... 13 



Differential Heating Below kO Feet 13 



Fitted Curves of Temperature Difference .... 15 



Time Changes in Temperature Gradients l6 



TABLES 



Table 1. 

 Table 2. 



Table 3. 

 Table k. 



Mean Hovirly Temperatures and Standard Deviations . k 

 Change in Temperatxrre Differentials from Fitted 



Curves 17 



Hourly Standard Deviations of Temperature .... l8 



Energy Involved in Convective Mixing ....... 19 



