- 18 - 



from the Saint John region eire higher in temperature thnn those 



proceeding from the P-^ss^^rnqquoddy region. At the 25 metre level 



(figure 18) the temperature gradient is in q considerably different 



direction than at one metre. From the mouth of Pogsamnquoddy Bpy 



to the open waters of the Boy of Fundy the temperatures increpse to 



o o 

 between 10,0 and 11,0 C., in a narrow band north of Grand Man^n, and 



o 

 then decrease to temperatures less than 10,0 C, on proceeding toward 



the deeper waters of the Bay of Fundy, Hence, the waters proceeding 

 from the region of the Snint John Estuary and Pnssamaquoddy areas are 

 v/armer than those at the s^me level in the open waters of the Bay, 

 At 50 metres (figure 19) the waters in the Grand Manan Channel have 

 temperatures about the same as at the surface and are thus seen to 

 be fairly uniform, in temperature, as was observed in figure 16 (section 

 882-885), There exists a relatively strong temperature gradient be- 

 tween the waters north of the Grand Manan Channel and offshore waters. 

 As at 25 metres, the waters at 50 metres are warmer in the Passa- 



maquoddy area than in the waters of the same depth in the open Bay 



o o 



(greater than 10,0 C, qs compared to less than 8.0 C,), 



(b) Salinity 



The distribution of salinity at a depth of 1 metre is shown in 



figure 20 where the greatest salinity is seen to be in the waters to 



the east of Grand Manan, The waters proceeding from Passamaquoddy 



o 

 Bay are of greater salinity (greater thnn 32,4 /oo) than the waters 



o 

 proceeding from the Saint John region (less than 32,4 /oo). The 



waters between Grand Manan and the mainland range in salinity between 



o 

 32.5 and 32.7 /oo. 



The greatest salinities at the 25 metre level (figure 21) are 



