scholarly journals Contamination of the Bay of Fundy—Gulf of Maine area with Polychlorinated Biphenyls, Polychlorinated Terphenyls, Chlorinated Dibenzodioxins, and Dibenzofurans

1972 ◽  
Vol 1 ◽  
pp. 47-50 ◽  
Author(s):  
V. Zitko ◽  
O. Hutzinger ◽  
P. M. K. Choi

<i>Abstract</i>.—The Gulf of Maine (GoM) may have defined borders to some, but to the Canadian fishing industry, it carries a flow of larvae, nutrients, and other resources that help sustain the fishery from Georges Bank to the West Scotian Slope to the Bay of Fundy and all points in between. The GoM provides a source of wealth to people and communities, as well as supplying what may be one of the last natural foods on the planet. The fishing industry has been using the GoM for centuries, yet it is only recently that monitoring and data gathering has been taking place. In my opinion, we can extract much more value from the fisheries than we presently do. If the fisheries resource of the GoM is not delivering its full potential, who is ultimately responsible and accountable? In the past decade, transboundary groundfish resources from Georges Bank have been successfully managed through the Transboundary Management Guidance Committee. We can improve decision making even further in a greater ecosystem context, recognizing that decisions have to be made with the information available. An ecosystem approach to fisheries proposes a pragmatic view based on assessing the risk of not meeting agreed objectives.


Author(s):  
A.M. Macdonald ◽  
S.M. Li ◽  
K.G. Anlauf ◽  
S. Sharma ◽  
C.M. Banic ◽  
...  
Keyword(s):  

1970 ◽  
Vol 27 (10) ◽  
pp. 1701-1728 ◽  
Author(s):  
G. F. D. Duff

A near-resonant mode of oscillation extending to the continental shelf in the Gulf of Maine is shown to be a contributing factor in the extreme high M2 tidal ranges in the Bay of Fundy.The effect on the M2 tidal regime of a double barrier at Cape Chignecto is studied by two methods. A one-dimensional simple harmonic model shows the effect of placing the matching boundary at any intermediate position and defines a probable zone of values for the barrier amplitude. A two-dimensional calculation covering the entire resonant region gives an estimated amplitude reduction of 34% at the Cape Chignecto barrier site.


Waterbirds ◽  
1999 ◽  
Vol 22 (2) ◽  
pp. 253 ◽  
Author(s):  
Kimberley Mawhinney ◽  
Antony W. Diamond ◽  
Patrick Kehoe ◽  
Nicola Benjamin

1991 ◽  
Vol 28 (7) ◽  
pp. 1096-1111 ◽  
Author(s):  
C. E. Keen ◽  
W. A. Kay ◽  
D. Keppie ◽  
F. Marillier ◽  
G. Pe-Piper ◽  
...  

Three deep-penetration seismic reflection profiles were collected off southwest Nova Scotia to determine the crustal structure and geometry beneath the Avalon and Meguma zones of the Appalachian Orogen in Canada. Onshore geological features have been traced seawards using new gravity and magnetic anomaly maps. The seismic data can also be correlated with the previous United States Geological Survey profile in the central Gulf of Maine.Two seismically distinct lower crustal blocks are identified: the Avalon and Sable lower crustal blocks, separated by a major north-dipping reflection zone that cuts the entire crust. The recognition of the Sable block adds a fourth block to the three already identified in the Canadian Appalachians. The Sable block is overlain by the Meguma Zone. The Avalon Zone overlies at least the northern part of the Avalon lower crustal block. Although offshore extension of geological features is not unequivocal, it appears that a north-dipping reflection zone southwest of Nova Scotia marks the site of Devonian thrusting of Avalon Zone over Meguma Zone. In the Bay of Fundy to the north, two south-dipping reflection zones are interpreted as major thrusts, possibly placing Avalon lower crust over a unit with different tectonic affinities. The Fundy Fault is a Carboniferous thrust within the Avalon block along the coast of New Brunswick; this was reactivated during Mesozoic extension as a transtensional fault. Extensional displacement farther southwest was probably accommodated along east-west-trending faults and small rift basins associated with them.


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