PHYSICAL OCEANOGRAPHY OP THE GULP OP MAINE 
523 
An 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. 
VERTICAL DISTRIBUTION 
At the end of the winter the temperature is very nearly uniform, 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 
