- 9 - 



where the j.sopycnqls (flfrure 5) nro seen to he lifted to higher 

 levels . 



In general it is seen thot the wnrmest waters <=re ohserved in 

 the Rhallow boys at the head of the B-^y of f'undy. These waters, 

 which are low in snllnlty, hold to the New Brunsv/ick shore, wbile 

 alonp" the Novn Scotia coast, where considerable tidal mixinp and up- 

 welling is taking plnce, the waters are colder and more saline „ The 

 warmer lighter waters proceeding out of the Bqy of f^undy nlong the 

 New Br-unswlck co^'st are thoroughly mixed, in the shallow -^rens south 



of Grand M-^nan, with the colder and more saline waters ''t the mouth 



o 

 of the Bny to form p body of water with temperatures between 10.5 C, 



o 

 and 8.0 C. nnd with corresponding salinities generally between 32o5 



o 

 and 33,0 /oo . 



IT, Horizontal Distribution 



(a ) Temperature 



The horizontal distribution of temperature at 1, 25 and 50 m., 



is illustrated in figures 6, 7, and 8o As shown by the sub- surface 



IsothermxS for 1 m.etre (figure 6), the temperatures at the head of 



o 

 the Boy of Fundy are greater than 13,0 C., with the waters of 



o 

 Chlgnecto Bo sin and Minas Channel greater than 14,0 C. From the 



mouth of the Bay inwards, the temperatures decrease rapidly from 



o o 



15 C„ or greater to values of less thnn 10,0 C, in the ^rea south- 



y/est of Grand Mannn, Another rapid change In tem_perature occurs 



between the deeper waters and the coast of Novp Scotia, It is to be 



noted thnt the isotherms tend to follow the general direction of the 



o 

 bottom contours well into the Bny, Tem.pera tures lov/er than 10,0 C, 



may be found in the inshore v/aters in the vicinity of the Novo Scotia 



coast, as well as neor the Nev/ Brunsv/ick and Ka ine coasts. Increasing 



