- 17 - 



by the winds ^nd tides. 



Across the northern entrance to Grnnd Hl^mn Channel (section 

 882-885) the W)c\ters J^re not ns thoroughly mixed ns they 5>re st the 

 southern end. due to the encronchment of waiters froin north of the 

 Chnnnel o Even so^ the waters in this section well illustrate the 

 effect of tid.nl mixing. Temper^^tures in this section ronfr^e from 







greater thri.n 10o5 C, at the surface, near the centre of the channel, 



o 

 to less than 10,0 C, nenr the bottom, with corresponding salinities 



o o 



between 32.6 /oo -^nd 32.7 /oo. From the slopes of the isopycn^lg 



it is difficult to form ^ny definite conclusion ps to the water move- 

 ments through this section, and to a lesser degree with the ensuing 

 sections. A.n interpretation of the residual water m.ovements is m.ore 

 readily made from the horizontnl distributions of density ((ft) to 

 be described later. 



Sections 890-893 rand 893-897, in the waters north of ^and Mqnan 



Channel, shov/ a greater degree of stratification, v/ith temperatures 



o o 



ranging from greater than 12,0 at the surface to 9.0 C. at the 



o 

 bottom, v/hile corresponding s<^linities range from 32.3 to 32,9 /oo . 



II, Horizontal Distribution 



The horizontal distribution of temiperature , salinity and density 



(<r^) in the Passamaquoddy region are given for depths of 1, 25 ^nd 



50 m.etres In figures 17 to 25 , 



(a) Temperature 



The gradation in temperature ot 1 m.etre (figure 17) is from 



o 

 the G^oonfj Manan Channel where temperatures ^^re between 10,0 G, =ind 



' o 

 10,5 C., to the region ne°r Pt . Lepreau where temperatures are 



o 

 greater than 12,0 C. It is to be noted that the waters proceeding 



