- 34 - 



conditions pind in the second upon the nmount of deeper wnter thnt ia 

 carried into the Bqy. This nrfrument i? further enhqnced by inspec- 

 tion of the tables of salinity vnlues. The snlinlty, in the mqin, 

 is determined by the relative amounts of fresh nnd salt v/aters 

 carried into the Bny by their respective ngencies. Evnpomtion 

 enters aa a negligible factor. The amount of fresh water supplied is 

 limited, and varies considerably from ye-^r to yenr. The lower salinity 

 values found at the surface hold only for the times of river freshets 

 which are of short duration. Consequently, there is nothing in the 

 way of a direct relationship between s^'linit^'^ values at the surface 

 and those found at greater depths. In other words, the movement of 

 the outside waters into the Bay is the main fnctor in the determina- 

 tion of the salinity of the waters at the greater depths, and the 

 xvaters from the greater depths are the prime factors in the determina- 

 tions of the salinities of the waters in the v/hole Bgy„ 



Representative Surface Water Temperatures 



Pour points in the Bqy of Fundy v/ere chosen such that they v;ould 

 indicate the temperature regime in their respective areas. The sur- 

 face temperatures for these points are plotted in figure 38. Lurcher 

 Lightship data are indicative of conditions in the Bay near the 

 western coast of Nova Scotia, while G^and Manan data are indicative 

 of conditions to the southwest of the Isl^^nd. Conditions at the 

 head of the Bay are Indicated by dat-' taken at the Isle Haute, while 

 the conditions in Ppssamaquoddy Bay are represented by dat^ from St. 

 Andrews . 



The main features brought out by these data are that periodicity 

 of the temperatures in the four areas are approximately identical. 



