The Stratospheric Circulation 



685 



Fig. 324. Distribution of oxygen (in percentage) in a section from the southern tip of 

 Greenland to the Great Banks of Newfoundland (according to Wattenberg). 



Fig. 325. Standard curve of the [r5]-relation in the core-layer of the mean North Atlantic 



Deep Water. 



its main features in agreement with the spread of this water type deduced from the 

 thermo-hahne structure. 



The source of this water transport is in the north-west of the Atlantic and from here 

 it flows southwards principally in three branches (see Fig. 327). The western branch 

 keeps close to the North American continental slope, passes through the North Ameri- 

 can Basin and enters into the Southern Hemisphere to the east of the Antilles. The 

 middle branch follows the eastern slope of the middle Atlantic Ridge as far as 5° N. 



