- 10 - 



temperatures nre found In the sren from Gpond Mqrr^n to the estuary 



of the STint John River nnd from there to tVie he^d of the Bay. The 



colder suh- si^rf nee waters -are thus found to be 1n the Grand Mnnsn 



region ^nd plong the northwestern outer portion of the Movn Scotis? 



const , 



At the 25 metre level (figure 7) the waters, from q line between 



the Splint John ond Digby regions to the hand of the Bqy, show f5 pro- 



o o 

 gressive increase in temperature from 9,5 to 13.5 C., with the waters 



o 

 in Chignecto Fiasin and Minas Channel greater thon 14.0 C, From the 



Digby region to the Saint John estuary a progressive temperature 



o o 



increase from 8.5 to greater than 10.0 G. takes place across the 



Bay. South of Grand Manan and stretching along the coast of Maine 



o 

 there is located a patch of w^ter with temperatures less than 9„5 C„, 



which represents the mixture of warmer waters from the Bpiy of Fundy 



and colder waters from greater depths in the Gulf of Taine, 



The isotherms for the 50 metre level (figure 8) show a gmdatlon 



o 

 In temperature from 6.5 G. at the moiith of the Bay to a temperature 



o 

 of about 9,0 C. in the area between Saint John and Digby, The depths 



near the head of the Boy nre. In general, too shallow to allow obs- 

 ervations at this depth. The isotherms at this depth also tend to 

 follow the general direction of the bottom, contours as was noted in 

 the previous horizontal distribution. 



The difference between the distribution of tem.perature at 50 

 metres and the distribution at 1 and 25 metres is worthy of consider- 

 able attention. The distribution at 50 metres lllustr^^tes forcibly 

 thot the deeper waters of the open oce-^n, that are carried to the 

 Bqy of Fundy, are rapidly warmed before reaching any great distance 

 into the Bay. On the other hand, the distribution at depths of 1 



