133 



PROFILE NO. 13STATIONS 329 333 AND 339. 



The section runs from station 339, on the southern part of the 

 Grand Bank, southward into deep water, with its offshore end cross- 

 sectionino; the northern part of the Gulf Stream. The stations were 

 occupied June 13-14. 



Salinity. — The freshest water found, less than 33''/no, occupied all 

 Bank depths, surface to hottom, inshore of the continental edge, 

 while a large ixxly of water of salinity similar to that of the Tjabrador 

 Current, 33 "/oo to 347oo, lay on the slope to a depth of 600 meters (328 

 fathoms) and extended offshore 65 miles in the upper 150 meters 

 (82 fathoms). Atlantic water 35 %o, with its inner boundary a 

 vertical wall 68 miles south of the Tail, flooded the two outer stations 

 to the maximum depth of investigation, 750 meters (410 fathoms). 



Temperature. — Cold water <0° was found washing the slope to a 

 depth of 600 meters (328 fathoms), extending 30 miles offshore, 

 and spreading 35 miles northward in over the bottom of the Bank. 

 Colimital with the salinities of 33 "/„o and upwards, temperatures 

 liigher than 10° were found at the outer stations, physical characters 

 which identified this mass of water as the inner edge of the Gulf 

 Stream. Below the 450-meter (246-fathom) depth at the outer 

 stations we found a cooling in the bottom layers of the northern 

 edge of the Gulf Stream, occasioned no doubt by the icy cold water 

 on the deeper part of tlie slope, assisted by normal abyssal tem- 

 peratures. 



PROFILE NO. 14- STATIONS 338 343. 



The section was taken in the same locality as profile No. 9, May 

 4-9, see page 125. It runs from the Tail of the Bank northward to 

 Cape Race, giving a vertical section of the water column hnng on the 

 Bank. It was taken June 19-23. 



Salinity. — Water Salter than 33 "/oo (the saltest water of the profile) 

 occupied the whole depth of the gulley, stu-face to bottom, and 

 encroached southward on the Bank a distance of 69 miles on the 

 surface and 100 miles on the bottom from Cape Race. South of 

 this, salinities were uniformly below 33 "/no across the whole breadth 

 of the Bank, but the profile did not run far enough south to cut the 

 Salter water which usually lies over the Atlantic slope. The southern 

 half of the Bank was occupied by a water mass which was fresher 

 than 33°/oo from surface to bottom. 



Temperature. — Two bodies of cool water, one on the northern 

 part of the Bank, in the gulley, as shown by the readings below zero 

 at 50 meters (27 fathoms) and on the bottom, and the other at the 

 Tail on the continental edge, were separated by a greater mass of 

 warmer water which flooded the entire central part of the Bank. 

 The positions of the two cold masses correspond roughly to the 



