123 



STATIONS 465-467 



These tliree stations were taken May 15-16 on the northern part 

 of the Grand Bank, and deal with a water mass which nonnally 

 during this period lias been found to be Arctic in character. The 

 lowest temperatures recorded May 15-lt) at these stations woe — 1.4^, 

 — 1°. and 1.1°. The coldest water in every instance lay on the 

 bottom. The surface temperatures of 4.5°, 2.5°, and 3.8° is con- 

 clusive evidence that not only had Arctic water mixed with the 

 surface layers, but that it had crept in over the bottom of the Bank. 

 This statement is further substantiated by consideration of the sa- 

 linities, which show that the warm surface layers were also com- 

 i)ai-atively fresh, viz, 32.51 Voo, 32.93 Voo, and 32.81 Voo, salinities 

 which accord with water of coastal character. The icy bottom cover 

 wr.s the saltest wr.ter of the columns, and it is worth noting that the 

 water on the bottom of the northern part of the Grand Banks, May 

 ir;-16, ^v;:s the coldest of any encountered by the patrol up to tliis 

 date. 



STATIONS 468-471 



These stations were taken on a cruise of the patrol vessel north- 

 ward from Funk Island to Belle Isle, Newfoundland. They were 

 occupietl Ma}^ 26-27. 



All stations exhibited an unmistakable Arctic chnracter in the 

 temperature stratification. The coldest water quite consistently lay 

 between 50 ancL 100 meters (27 and 55 fathoms) below the surface, 

 the temperature records were: — 0.2^, —0.6°, — 0.8°, and —0.1°. 

 Such temperatures correspond to those found 500 miles to the south- 

 ward, olT the Tail of the Grand Banks. The coldest water was found 

 May 20 at station 472, oif Fogo Island, the thermometers reading 

 — 1.5° when lowered near the bottom. This was the coldest water 

 encountered during the 1924 season. The salinities of 33.61-33.51 "/oo 

 is recognized as that according with the heart of the Labrador cur- 

 rent off the east side of the Grand Banks. 



PROFILE NO. 10— STATIONS 475-479 



The section runs from 10 miles east of Cape Race, Newfoundland, 

 southward across the " gullej- ." the outer station, 479, being located 

 on the extreme northwestern part of the Grand Bank. The stations 

 were taken June 25. The object sought was to chart the position and 

 size of the cold northern water in this direction south of Cape Race. 



Salinity. — ^The section cut across a band of water floating in the 

 surface layers fresher than 32.70 %o. It had a maximum thickness 

 of 35 meters (19 fathoms) at station 477, 25 miles off Cape Race, 

 and it measured over 120 miles in its greatest width. A band of 



