Scotian Shelf, Cabot Strait and Continental Slope. by Canadian Oceanographic Data Centre.

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SeriesCanadian Oceanographic Data Centre Data Record Ser -- 64-16
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Open LibraryOL21890109M

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Atlantic continental shelf and slope of the United States; heavy minerals of the continental margin from southern Nova Scotia to northern New Jersey,Professional Paper, PPG:18 figures and 11 tables. [Ross, D. A.] on *FREE* shipping on qualifying offers. Atlantic continental shelf and slope of the United States; heavy minerals of the continental margin from Author: D.

Ross. Maritimes Region State of the Ocean: Scotian Shelf, Bay of Fundy and Gulf of Maine 5 the third year in a row. These conditions are believed to have been initiated by an influx of warm slope water through the Northeast Channel during late In the Laurentian Channel to the east of the Scotian Shelf, deep ( m) waters at Cabot Strait.

variabiliiy of the sea-surfaceslopes over the Scotian Shelf and the Grand Banks is thought to be induced by the seasonal outflow from the GuIfof St Lawrence through Cabot Strait, andpossibly by an. er et al. ), supplemented by the Cabot Strait outflow from the Gulf of St. Lawrence.

The Cabot Strait outflow has two major pathways on the Scotian Shelf: one is along the inner Scotian Shelf as part of the Nova Scotian Current; the other is along the shelf edge (Sutcliffe et al.

; Han et al. The southwestward shelf. stations on the Scotian Shelf. The transects included one across Cabot Strait, one along the Banquereau Line and another along the Halifax Line (Fig. Most noticeably was very cold, relatively fresh water off the continental shelf on both the Banquereau and Halifax Lines (Fig.

3,4). CTD measurements suggested that this cold water had. nated (>90%) by CV copepodites off the western Scotian Shelf, in Cabot Strait, the central New- foundland slope waters and the Labrador Sea. Along the slope between Flemish Pass and the eastern.

Scotian Shelf, a km section of the Continental Shelf off Nova Scotia. Bounded by the Laurentian Channel on the NE, and Northeast Channel and the Gulf of Maine on the SW, it varies Cabot Strait and Continental Slope.

book width from to km; the average depth is 90 m. Scotian Shelf. Scotian Shelf, a km section of the Continental Shelf off Nova Scotia. Cabot Strait (CS), the Labrador Current extension along the shelf break and the cyclonic Slope Water gyre over the continental slope [e.g., Loder et al., ], results in pronounced spatial and temporal structure in the region’s circulation pattern on various scales of biological and environmental importance.

On the shelf scale, the region. continental shelf that separates Nova Scotia from Newfoundland, and terminates at the edge of the (north of Cabot Strait) and m (south of the mouth of Hermitage at water depths of to 1, m on the continental slope (Piper et al.

Cabot Strait region and off the Western Scotian Shelf, autumn and Emerald Basin and off the south Newfoundland Shelf and Western Grand Bank (winter ). In the CSR, concentrations of CV C. finmarchicus generally peaked at depths of – m, and at some stations there were large numbers at shallower depths.

Scotian Shelf, Bay of Fundy and Gulf of Maine Background In the deep waters of Cabot Strait, temperatures were coldest during the s but have been above or near average in recent along the continental slope of the Scotian Shelf at depths of to m as far south as Emerald Basin.

They replaced warm Slope. RESULTS AND DISCUSSION Areal distribution The Scotian Shelf has an area of 62 x km2, of which basins on the shelf (LaHave, Emerald, etc.) occupy kin2; the Laurentian Channel (outside Cabot Strait, west of St Pierre Bank) adds x km2 and the slope x km2, for a total continental margin Cabot Strait and Continental Slope.

book x km2 (of which Shelf forms 70%, Slope 12%, Channel 12%. GSL. Cabot Strait has a width of approximately km and a maximum depth of approximately m. A smaller amount of exchange also occurs through the Strait of Belle Isle at the northeast corner of the GSL.

One of the major bathymetric features of the GSL is a trough known as the Laurentian Channel, which starts at the continental slope.

At a speed of m/s (Wu et al., ) it would take approximately 3 months for discharge to reach Cabot Strait, along the km distance from the lower St. Lawrence estuary. This is consistent with the timing observed in our climatology, where by summer, freshening is observed over the entire Gulf of St.

Lawrence and over the Scotian Shelf. Circulation over the Scotian Shelf and Slope off the Canadian Atlantic coast is dominated by southwestward shelfbreak and inner-shelf flows and by an eastward-flowing slope current. The southwestward flows are mainly induced by freshwater of Arctic origin (Drinkwater et al.

; Smith and Schwing ; Loder et al. ), supplemented by the Cabot Strait outflow from the Gulf of St. No high voltage DC power cables cross the Scotian Shelf, although proposals for DC power cables have recently been considered.

There are numerous inactive cables on the Scotian Shelf and Slope, some of which are more than years old. CANTAT-2 was originally. The Gulf of St. Lawrence and Scotian Shelf provide a diversity of oceanographic conditions in a continental margin setting. Climate is markedly seasonal, and bathymetry and hydrodynamic conditions cover a broad range, significantly influencing the patterns of organic matter sedimentation and, potentially, benthic community dynamics.

Samples for analysis of benthic macrofauna and sediment. This indicates that the export of sea ice from the GSL through Cabot Strait is important for sea ice conditions on the eastern Scotian Shelf in Exp‐Control (Figures 14g–14k and 15g–15k).

To further quantify the role of dynamics and thermodynamics, we examine the sea ice volume produced by the coupled circulation‐ice model in the two. characterized by currents moving to the southwest with insh ore and shelf-break branches.

The inshore Nova Scotia Curre nt (NSC) originates in the Gulf of St. Lawrence, turns onto the S cotian Shelf at Cabot Strait, moves southwestward along the coast, andenters the Gulf ofMaine at Cape Sable. This paper examines the subtidal circulation and associated variability in the Gulf of St.

Lawrence, the Scotian Shelf, and the Gulf of Maine (GSL-SS-GOM) in – based on results produced by a nested-grid shelf circulation model.

The model has a fine-resolution child model (∼ (1/12)°) embedded inside a coarse-resolution parent model (∼ (1/4)°) of the northwest Atlantic. GDFs are restricted to areas in which the gradient of the upper m of the continental slope is Strait, in Orphan Basin, and off the Scotian Gulf (Fig.

In each case, the low slope gradient is a result of overall structural and stratigraphic control on the basin shape. Refinements of the model will also require more observations in critical areas such as the southeast Labrador Sea, Newfoundland Shelf, and the Slope Water recirculation gyre, and observations of vertical distribution of C.

finmarchicus particularly in strongly sheared areas like Cabot Strait and the shelf break. Scotian Shelf in spring and summer, • C. finmarchicus abundance was the highest on record in Cabot Strait in spring and the highest on record on the central Scotian Shelf in fall.

• CPR counts for showed that the abundance of several important zooplankton species continues to be well below levels observed in the s/s. The inshore Nova Scotia Current (NSC) originates in the Gulf of St.

Lawrence, turns onto the Scotian Shelf at Cabot Strait, moves southwestward along the coast, and enters the Gulf of Maine at Cape Sable. The shelf-break current is an extension of the Labrador Current (Han, ; Hannah et al., ). Introduction This review (Region 1, W) focuses primarily on coastal and shelf waters of the North Atlantic Ocean from Cabot Strait, situated between Nova Scotia and Newfoundland, to Cape Hatteras, North Carolina (from approximately 47°N to 35°N latitude; Fig.

• Annual air temperatures in over the Scotian Shelf, Bay of Fundy and eastern Gulf of Maine were oC to oC below normal, similar to • Sea ice cover seaward of Cabot Strait was less than normal in January-May and substantially less than coverage in The near-surface dispersion is relatively high over western Cabot Strait, the inner Scotian Shelf, and the shelf break of the Scotian Shelf, while relatively low in Northumberland Strait.

A process study is conducted to examine the physical processes affecting the surface dispersion, including tidal forcing and local wind forcing.

The Scotian Shelf comprises a km long section of the continental shelf off the Canadian province of Nova Scotia. The Scotian Shelf is bounded by the Gulf of St. Lawrence and Cabot Strait to the north and by the Gulf of Maine to the southwest, varying in width from to km (Fig.

The. The subsurface geology of the Gulf of St. Lawrence and of the continental shelf off Nova Scotia and Newfoundland is interpreted primarily from the results of 37 seismic-refraction profiles.

The Gul. Observations of hydrography and Calanus spp. abundance were made at stations on lines across the central and eastern Scotian Shelf (SS) in April and and on additional lines on the western SS and across Cabot Strait (CS) and the Laurentian Channel (LC) in Calanus finmarchicus was more abundant on the central and western SS than in the east, and Calanus hyperboreus was.

(GoSL) through the Cabot Strait, from the New-foundland Shelf via the Labrador Current, and from offshore continental slope water, and (3) tidal mixing in the Gulf of Maine (Han et al.

Hannah et al. It is well established that the Scotian Shelf has 2 major water masses that advect Calanus spp. to. formation on the Labrador Shelf is shown to influence 18 O–S values.

It is estimated that 2–3 m of freshwater is extracted from the water column to form sea ice. It is hypothesized that waters on the Scotian Shelf, Gulf of Maine, and the Middle Atlantic Bight are composed of slope water diluted by an upstream low-salinity source.

The Gulf of Saint Lawrence (French: Golfe du Saint-Laurent) is the outlet of the North American Great Lakes via the Saint Lawrence River into the Atlantic gulf is a semi-enclosed sea, covering an area of aboutsquare kilometres (87, sq mi) and containing ab cubic kilometres (8, cu mi) of water, which results in an average depth of metres ( ft).

the deep water off the Scotian Shelf to the Gulf of St. Lawrence. The maximum SST cooling due to Hurricane Juan was about 3 C over the central Scotian Shelf and adjacent slope (Fig. On each side of the SST cold wake, there was a strip of SST warming associated with the storm. The changes in thermal structure produced.

There is also influx of water into the Cabot Strait region from along the shelf-break to the south via the Laurentian Channel (Loder et al., ), but concentrations of C.

hyperboreus in the slope waters upstream of the mouth of the Laurentian Channel (off St Pierre Bank) in autumn and were. Slope a ters Central Scotian Shelf Laurentian Channel Tail of the Grand Banks Laurentian Channel Mouth Orphan Knoll Cabot Strait Gulf Stream Labrador Current Scotian Shelf Grand Banks 52° N 48° N 44° N 40° N 36° N 66° W 60° W 54° W 48° W 42° W 0 – –1, –1, –2, –2, –3, –3, –4, –4, –5, SCOTIAN SHELF The greater part of sea ice on the Scotian Shelf originates in the Gulf of St.

Lawrence, and is transported through Cabot Strait by northwesterly winds and ocean currents. Sydney Bight and the northeastern coast of Cape Breton are typically the only areas heavily affected by ice in the region. Slope a ters Central Scotian Shelf Laurentian Channel Tail of the Grand Banks Laurentian Channel Mouth Orphan Knoll Cabot Strait Gulf Stream Labrador Current Scotian Shel f Grand Banks 52° N 48° N 44° N 40° N 36° N 66° W60° 54° 48° 42° 0 1.

Western Bank, situated at the edge of the Scotian Shelf (Fig. 1), is just one bank within a system of banks on the Nova Scotian shelf. Its importance is determined by its relatively large spatial extent ( km long, 60 km across, but covering less than 10% of the total area of the shelf) and its location near the continental slope.

Monthly means of temperature and salinity in the Scotian Shelf region. Oceanographic features, currents and transport in Cabot Strait. Oceanographic observations on the Scotian Shelf during CASP. Oceanography of a Large-Scale Estuarine System. On the origin of shelf water in the Middle Atlantic Bight.

(). American plaice (Hippoglossoides platessoides) are found in Northwest Atlantic waters along the continental shelf and upper continental slope from west Greenland to Rhode Island, favoring intermediate depths ( m), cold waters.

The Scotian Shelf is a wide (up to ~ km) and long (~ km) continental margin off Nova Scotia, Canada that is characterized by a number of banks, deep basins, channels, and submarine canyons. It is separated from the Grand Banks in the east by the Laurentian Channel, and from the Gulf of Maine by the Northeast and Fundian Channels in the west.of the Cabot Strait and Cape Breton Shelf, where mixing of 4T and 4Vn fish may occur.

Manuscript submitted 17 May to the Scientific Editor’s Office. Manuscript approved for publication 25 August by the Scientific Editor. Fish. Bull. – (). Use of endoparasitic helminths as tags.

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