154 



colder than 3° and warmer than ^°, which, it should be noted, coin- 

 cides exactly in location with the corresponding transition from 

 low to high salinities described in the preceding paragraph. 



Offshore water warmer than 10° lay to a depth of 150 meters 

 (82 fathoms) at the outer station and extended inshore, gradually 

 thinning to a surface fdm which could be traced no farther inshore 

 than station 367. The coldest water found on the surface was 

 directly over the band of icy water 50 meters (27 fathoms) on the 

 continental edge. 



PROFILE NO. 17— STATIONS 357-362. 



The section runs from in on the Tail of the Bank southward out 

 over the slope and into the deep water. The stations were occupied 

 October 22-23. 



Salinity. — A body of water salter than 35 "/on was found flooding 

 all depths to 600 meters (328 fathoms) and 450 meters (246 fathoms) 

 at stations 362 and 361, respectively. The northern face of this 

 water, as bounded by the curve 35^/00, was of slighth' convex form, 

 the upper 300 meters (164 fathoms) being nearly vertical and l}'ing 78 

 miles from the continental edge. The transition zone from 357f)o to 

 34"/no water was encoimtered between station 361 and station 360. 

 Water salter than 33"/oo flooded the whole column in on the Bank, 

 except at the surface, which was 32.72%o. Water of a salinity 

 less than 33.5"/oo spread seaward from the edge for more than 60 

 miles. The water inuncdiately on the slope at the 80-meter (44- 

 f a thorn) level registered 33.86^/(,,„ an important fact in connection 

 with the discussion of the circulation. 



Temperature. — Similar to the baml of cold water found northward 

 on the east slope (see profile No. 16), and without doubt a southern 

 extension of the latter were the two bands of water colder than 

 0°, which are the most striking features of the section. One band 

 was found lying on the slope between the 60-meter (33-fathom) 

 and 135-meter (74-fathom) depths; a shelf projecting oft'shorc 12 

 miles from the continental edge. The second band or core of —0.4° 

 water lay at the 125-meter (68-fatliom) depth of station 360. 

 Probably those two bodies of cold water had become disconnected 

 some time shoi'tly prior to October 22-23. The bottom of the 

 Bank was covered to a tliickness of 30 meters (16 fathoms) by 

 water colder than 0.7°, which is much colder than the water on 

 the east side of the Bank (2.05°) at station 369, several miles to the 

 northward. But this water in over the bottom, 0.6°, is considerably 

 warmer than the Arctic bands aforementioned. 



At the outer station water warmer than 10° and with 18° at surface 

 occupied the upper 150 meters (82 fathoms). But shoreward the 

 isotherm for 10° rose to the surface somewhere between stations 



