444 



Tides in the Mediterranean and Adjacent Seas 



Table 68. Tidal data at spring tide for the Bay of Fundy 



Tidal hours given in difference with the establishment at St. John, N. B. : 

 3 h 42 m Greenwich time 



large, about 3 m (9-5 ft), but increase rapidly inward. St. John, about in 

 the middle, has already more than 8 m (25 ft); in the Chignecto Basin the 

 range increases near Sackville to 14 m (46 ft). At Noel, at the end of the 

 Minas Basin, there is a normal spring tide range of 15-4 m (50 5 ft). 



All these facts prove definitely the presence of a standing wave, which 

 must be considered as a co-oscillating tide. The strong increase of the tidal 

 range points to an intensification of the amplitude through resonance. In fact, 

 with a length of the Bay of 250 km (162 miles), a mean depth of 70 m (225 ft) 

 and a ratio of length to width at the opening of 0-23, the period of the free 

 oscillation of the Bay assumed to be closed in 629 h. This gives v — 0505 

 which means that the resonance condition is almost completely fulfilled. The 

 lag of the phase is a consequence of the frictional influences in the innermost 

 shallow sections. The tidal ranges in the south (the northern coast of Nova 

 Scotia) are always somewhat larger than in the corresponding localities to 

 the north (which is the southern coast of New Brunswick), which is an effect 

 of the rotation of the earth. According to the relation 2wsin<£- u = — g(Srj/dy) 

 (see p. 204) one obtains with a u of 1 -8 knots in the main canal and a width 

 of 58 km (37-8 miles), an increase of the tidal range of 56 cm at the southern 

 coast; the observations give an increase between 07 and 0-3 m. 



Dawson (1905) investigated the current in front of and at the opening 

 of the Bay of Fundy into the Gulf of Maine. The observations show a nearly 



