PHYSICAL OCEANOGRAPHY OF THE GULE OF MAINE 



705 



the several rivers produce a cumulative freshening in the coastwise belt from mid- 

 March on, which finally involves the entire periphery of the gulf to greater or less 

 extent (p. 723). 



Fig. 91— Salinity at the surface, February 22 to March 24, 1920. The isohaline for 33 per mille is assumed 



VERTICAL DISTRIBUTION 



Our data on salinity for the years 1913, 1920, and 1925 show that a very close 

 approach to vertical uniformity obtains over the gulf down to a depth of 40 to 50 

 meters and outside the 100-meter contour during the last week of February and the 

 first part of March. Thus, in 1920 the widest range between the surface and the 



FROM 



THE 



ARCHIVES 



OF THE 



"°°°^«,".?,'-r,^ OCEANOGRAPHIC INSTITUTION 

 WOODS HOLE, MASSACHUSETTS 



