PHYSICAL OCEANOGBAPHY OF THE GULF OP MAINE 



523 



Aa extreme range of about 5° surface temperature thus may be expected over 

 the whole area of the gulf at the end of the winter, and a range of about 4° in its 

 inner parts. 



Fig. 1.— Temperature at the surface, February-March, 1920 



VERTICAL DISTRIBUTION 



At the end of the winter the temperature is very nearly imiform, vertically, down 

 to a depth of 100 meters, rising slowly with increasing depth below that level. This 

 state continues into March, until the climbing sun has warmed the surface appreci- 

 ably. Whether the water is coldest immediately at the surface or 10 to 20 meters 



