scholarly journals Submarine glacial landforms on the Bay of Fundy–northern Gulf of Maine continental shelf

2016 ◽  
Vol 46 (1) ◽  
pp. 429-436 ◽  
Author(s):  
B. J. Todd ◽  
J. Shaw ◽  
P. C. Valentine
Keyword(s):  
Continental Shelf ◽  
Gulf Of Maine ◽  
Bay Of Fundy ◽  
Glacial Landforms

Tidal Resonance and Tidal Barriers in the Bay of Fundy System

1970 ◽  
Vol 27 (10) ◽  
pp. 1701-1728 ◽  
Author(s):  
G. F. D. Duff
Keyword(s):  
Continental Shelf ◽  
Gulf Of Maine ◽  
Resonant Mode ◽  
Bay Of Fundy ◽  
Two Dimensional ◽  
Harmonic Model ◽  
Double Barrier ◽  
One Dimensional ◽  
Tidal Regime ◽  
Resonant Region

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.

Bottom Residual Drift on the Continental Shelf Area of the Canadian Atlantic Coast

1967 ◽  
Vol 24 (9) ◽  
pp. 1845-1859 ◽  
Author(s):  
L. M. Lauzier
Keyword(s):  
Continental Shelf ◽  
Gulf Of Maine ◽  
Atlantic Coast ◽  
Bay Of Fundy ◽  
Shelf Area ◽  
Residual Drift ◽  
Sea Bed ◽  
Continental Shelf Area ◽  
Relationship Of ◽  
The Relationship

From 1961 to 1965, 14,137 sea-bed drifters were released over the Continental Shelf from the Gulf of St. Lawrence to the Gulf of Maine–Bay of Fundy to investigate the residual drift along the bottom. A total of 2772 drifters were recovered either from the sea floor or along the shores. The recovery pattern, in time and in space, is studied for various portions of the Shelf.The inferred residual bottom drift is shown in a series of three charts. The estimated rate of drift lies between 0.2 and 0.7 nautical mile/day. The continuity of bottom drift over large areas is indicated. The relationship of surface to bottom drift is studied. Areas of convergence and upwelling are emphasized. No seasonal variations in the direction of bottom drift and in the speed have as yet been detected.

Recent coastal submergence of the Maritime Provinces, Canada

1970 ◽  
Vol 7 (2) ◽  
pp. 676-689 ◽  
Author(s):  
Douglas R. Grant
Keyword(s):  
Mathematical Models ◽  
Continental Shelf ◽  
Sea Level ◽  
Gulf Of Maine ◽  
Atlantic Coast ◽  
High Tide ◽  
The Other ◽  
Tidal Range ◽  
Bay Of Fundy ◽  
Maritime Provinces

Hydrographic, archeologic, and geologic evidence indicates that for the last 4000 y the Maritime Provinces have been submerging three to five times faster than the 6 cm/century rate of eustatic rise of sea level. After correcting for the eustatic change, the Bay of Fundy shows an anomalous submergence of 24 cm/century, of which at least 15 cm/century is probably due mainly to rise of high tide, or increase of tidal range, beginning 4000–6000 y ago as eustatic sea-level rise widened and deepened the entrance to the Gulf of Maine. Submergence of the Atlantic coast of Nova Scotia, on the other hand, exceeds the eustatic rate by 9 cm/century, which can be largely explained by new mathematical models as isostatic subsidence of the earth's crust as the sea deepened eustatically over the continental shelf. Only a small part of the residual anomalies of 9 cm and 4 cm/century for the Fundy and Atlantic coasts, respectively, can be attributed to a combination of additional subsidence due to geosynclinal downwarping and relaxation of a possible glacier-margin peripheral bulge, thereby implicating other modes of regional crustal lowering.

scholarly journals Seasonal trends and phenology shifts in sea surface temperature on the North American northeastern continental shelf

Elem Sci Anth ◽  
2017 ◽  
Vol 5 ◽  
Author(s):  
Andrew C. Thomas ◽  
Andrew J. Pershing ◽  
Kevin D. Friedland ◽  
Janet A. Nye ◽  
Katherine E. Mills ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Continental Shelf ◽  
Sea Surface Temperature ◽  
North American ◽  
Gulf Of Maine ◽  
Sea Surface ◽  
Scotian Shelf ◽  
Seasonal Differences ◽  
Study Region ◽  
The North

The northeastern North American continental shelf from Cape Hatteras to the Scotian Shelf is a region of globally extreme positive trends in sea surface temperature (SST). Here, a 33-year (1982–2014) time series of daily satellite SST data was used to quantify and map spatial patterns in SST trends and phenology over this shelf. Strongest trends are over the Scotian Shelf (>0.6°C decade–1) and Gulf of Maine (>0.4°C decade–1) with weaker trends over the inner Mid-Atlantic Bight (~0.3°C decade–1). Winter (January–April) trends are relatively weak, and even negative in some areas; early summer (May–June) trends are positive everywhere, and later summer (July–September) trends are strongest (~1.0°C decade–1). These seasonal differences shift the phenology of many metrics of the SST cycle. The yearday on which specific temperature thresholds (8° and 12°C) are reached in spring trends earlier, most strongly over the Scotian Shelf and Gulf of Maine (~ –0.5 days year–1). Three metrics defining the warmest summer period show significant trends towards earlier summer starts, later summer ends and longer summer duration over the entire study region. Trends in start and end dates are strongest (~1 day year–1) over the Gulf of Maine and Scotian Shelf. Trends in increased summer duration are >2.0 days year–1 in parts of the Gulf of Maine. Regression analyses show that phenology trends have regionally varying links to the North Atlantic Oscillation, to local spring and summer atmospheric pressure and air temperature and to Gulf Stream position. For effective monitoring and management of dynamically heterogeneous shelf regions, the results highlight the need to quantify spatial and seasonal differences in SST trends as well as trends in SST phenology, each of which likely has implications for the ecological functioning of the shelf.

Advancing an Ecosystem Approach in the Gulf of Maine

2012 ◽  
Keyword(s):  
Gulf Of Maine ◽  
Data Gathering ◽  
Ecosystem Approach ◽  
Bay Of Fundy ◽  
Fishing Industry ◽  
Full Potential ◽  
Georges Bank ◽  
The West ◽  
Management Guidance ◽  
Natural Foods

<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.

Distribution of methanesulphonate, nss sulphate, so2 and dimethylsulphide over the bay of fundy and gulf of maine

1996 ◽  
pp. 427-430
Author(s):  
A.M. Macdonald ◽  
S.M. Li ◽  
K.G. Anlauf ◽  
S. Sharma ◽  
C.M. Banic ◽  
...  
Keyword(s):  
Gulf Of Maine ◽  
Bay Of Fundy
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