- 14 - ■ 



the Bay, keeping close to fhe New J^runsv/ick ooqst to the region of 

 the Saint John Estuary, thence to Grand Manan. At this point accorri- 

 ing to Mavor (1S22) the waters round Grand Manan to the eastward and 

 then flow southward along the Coast of Fa Ine . The incoming waters 

 must then enter along the Nova Scotia Coast and hold to this coast 

 reaching well into the Bay, This inflow of salt water is necessary 

 to replace the salt water consumed in the mixing with the fresh water 

 from the drainage basins and which has passed out of the area. Since 

 the outflow is along the New Brunswick coast and the inflow along the 

 Nova Scotia Coast, there must be a crossing over from the Nova Scotia 

 side to the New Brimswick side. This crossing in actuality takes 

 place throughout the entire length of the Bay, but is more oronounced 

 in the region north of the line between Digby and Saint John to the 

 head of the Bay, This movem^ent is clearly shown by the distribution 

 of density (d^) at all levels, where the isopycnals by necessity have 

 a tongue-like shape reaching well into the Bny, In the area to the 

 southwest of Grand Fmnan a cyclonic circulation is in evidence in the 

 upper layers (figure 12). This heavier virater, is therefore, dissi- 

 pated as it breaks away from this area in its antl- clockwise movem_ent, 

 sinking below the lighter waters of the surrounding region. The 

 distribution of density (fS^) at 25 and 50 metres (figures 13 and 14) 

 shows that this water is crried southward along the const of Maine, 

 Tidal mixing and upwelling have been shown to play on imnortant 

 part in determining the hydrographic conditions in the Bay of Fundy 

 regions. The distribution of tem.persiture at 25 m= (fJgure 7) shows 

 that upv/elling is effective at this depth, while at 50 metres 

 (figure 8) the effect of the upwelling of the deeper waters is still 

 In evidence. The surface densities (figure 12) illustrate upwelling 



