CANADIAN FISHERIES EXPEDITION, 191.'rl5 363 



Intermediate Water (30-32 "/oo) is found at the surface in the middle part of the 

 gulf of St. Lawrence, over the inner and northern parts of the Nova Scotian banks, in 

 the latter area out towards the slopes, and over the southern and larger part of the 

 Laurentian channel. The 31-water forms the mass of this surface water and the 30- 

 water is mostly present only as a rim round the Salter water. Only in the Nova 

 Scotian bank area, off the Gut of Canso, we find the 30-water at the surface projecting 

 fls a broad tongue out towards the Banquereau. At a depth of 25m. the intermediate 

 water occupies the gulf, with the exception of the area close up to Prince Edward 

 Island, and the Nova Scotian bank area, south to Sable island, and out to the slopes in 

 the north, near to the Laurentian channel. At a depth of 50m. intermediate water is 

 found in the larger part of the gulf, excepting the northern middle part, and on the 

 inner part of the Nova Scotian banks. At a depth of 100m. only slight indications of 

 intermediate water are found close to the southern slopes of the Laurentian channel off 

 Gaspe. 



Bank u'ater (32-33 V^o). At the surface, water of this salinity seems to occupy 

 the large Newfoundland banks to a little out from the slopes towards the Atlantic 

 depths and the Laurentian channel. Off the latter it occupies a wider area of the surface 

 out from the slopes, but farther south and west it is again restricted to a rim over the 

 slopes. At a depth of 25m. the intermediate water occupies about the same area as at 

 the surface, but at 50m. we find it in the northern middle part of the gulf with a very 

 narrow tongue projecting up the Laurentian channel close to Anticosti island. The 

 Newfoundland bank area at the latter depth, too, is covered by bank-water, but off the 

 Laurentian channel the Atlantic influence is felt as a broad tongue of salter water 

 projecting north and west towards the channel. At a depth of 100m. the bank-water 

 occupies the Nova Scotian and Newfoundland banks, with the exception of part of the 

 areas near the southern slopes, where salter water is found. Salter water is also 

 found as a tongue projecting north and west along the northern slopes of the Laurentian 

 channel through Cabot strait, with a bend to the south of the tip of the tongue towards 

 the Magdalen Island east bank. The rest of the gulf at this depth is occupied by 

 bank-water. 



Slope water (33-35 Voo). At the surface down to a depth of 25m. we find the slope 

 water only as a rim off the slopes towards the Atlantic ocean, somewhat broader in the 

 west, narrower in the east off the Great bank, where the Atlantic water sets on. At 

 50m. we find the slope water as the above-named broad tongue towards the Laurentian 

 channel. At 75m. the rim of slope water lies close up to the slopes and the above- 

 named tongue is broader. At 100m. the tongue projets up the Laurentian channel, 

 through Cabot strait, and touches the ^fagdalen Island east bank, as mentioned above. 



Atlantic water (above 35 Vooj. — Only at stations V, VI, 16 do we find water of 

 this high salinity at the surface and down to 400m. At station VI, 17 we find it from 

 50m. down to 400m., and at a depth of 100m. it reaches as far towards the Great bank 

 as station VI, 17a, but only as a wave confined to this depth. 



6. Temperature ( Sandstrom Plate IV). 



The surface temperature in the gulf of St. Lawrence during the firy-t part of .Tune 

 mostly falls between 5° and 10° C. The highest surface temperature, 11-5° C, is 

 found at station 3, and the lowest, 4-2° C, at station 21. It is of interest to note 

 that the higher surface temperatures are found in the southern part of the gulf near 

 the coasts, and the lower over the channels leading out to the Atlantic ocean. The 

 surface temperature thus found over the Laurentian and Esquimau channels seems to 

 be the common surface temperature over a great part of the Nova Scotian and New- 

 foundland bank area, where the surface temperature seems to be fairly uniform^ 



6551—27 



