savannah Lightship (Figure 17, Table 17) 



Surface temperatures from January through July were in general 

 slightly above the mean and above those for 1956. The summer maximum 

 occurred in raid-August and was followed by a sharp decline of about U 

 degrees. Temperatures during the six weeks from mid-September through 

 October stayed above the mean, after which readings fell below. As in 

 1956, the water column stayed very nearly isothermal throughout the year. 



Mini mum temperatures probably occurred at the end of December 

 (observations for the last 10 days are missing) and were probably several 

 degrees warmer than the 1956 minimum. The maximum of greater than 8i!f°F. 

 coincides with that of 1956 both in time and temperature, 



surface salinity shows a minimum (10 day means) of 31.6 /oo 

 at the end of April and a maximum of 35.2 °/oo in mid-January, The 1956 

 surface minimum and maximum respectively were 33.2 °/oo a"<i 35.9 °/oo. 

 It is apparent that there was appreciably more rainfall and runoff in 

 1957 than in the previous year. 



115 



