scholarly journals Gulf Stream frontal eddy influence on productivity of the southeast U.S. continental shelf

1991 ◽  
Vol 96 (C12) ◽  
pp. 22191 ◽  
Author(s):  
Thomas N. Lee ◽  
James A. Yoder ◽  
Larry P. Atkinson
Keyword(s):  
Continental Shelf ◽  
Gulf Stream

Frontogenesis with ageostrophic vertical shears and horizontal density gradients: Gulf Stream meanders onto the continental shelf

1996 ◽  
Vol 101 (C8) ◽  
pp. 18079-18104 ◽  
Author(s):  
Richard P. Mied ◽  
Colin Y. Shen ◽  
Thomas E. Evans ◽  
Gloria J. Lindemann
Keyword(s):  
Continental Shelf ◽  
Gulf Stream ◽  
Density Gradients

scholarly journals Gulf Stream and wind-induced current variability on the Georgia continental shelf, winter 1978

1985 ◽  
Vol 90 (C2) ◽  
pp. 3199 ◽  
Author(s):  
Li Li ◽  
Mark Wimbush ◽  
D. Randolph Watts ◽  
Alex J. Brincko ◽  
Thomas N. Lee
Keyword(s):  
Continental Shelf ◽  
Gulf Stream ◽  
Induced Current

scholarly journals Gulf Stream Ring Water Intrusion on the Mid-Atlantic Bight Continental Shelf Break Affects Microbially Driven Carbon Cycling

2019 ◽  
Vol 6 ◽  
Author(s):  
Adrienne Hoarfrost ◽  
John Paul Balmonte ◽  
Sherif Ghobrial ◽  
Kai Ziervogel ◽  
John Bane ◽  
...  
Keyword(s):  
Continental Shelf ◽  
Carbon Cycling ◽  
Gulf Stream ◽  
Shelf Break ◽  
Water Intrusion ◽  
Continental Shelf Break

Flushing of the continental shelf south of Cape Hatteras by the Gulf Stream

1978 ◽  
Vol 5 (6) ◽  
pp. 495-498 ◽  
Author(s):  
Jackson O. Blanton ◽  
Leonard J. Pietrafesa
Keyword(s):  
Continental Shelf ◽  
Gulf Stream ◽  
Cape Hatteras

Response of South Carolina continental shelf waters to wind and Gulf Stream forcing during winter of 1986

1989 ◽  
Vol 94 (C8) ◽  
pp. 10715 ◽  
Author(s):  
Thomas N. Lee ◽  
Elizabeth Williams ◽  
John Wang ◽  
Robert Evans ◽  
Larry Atkinson
Keyword(s):  
South Carolina ◽  
Continental Shelf ◽  
Gulf Stream

Phytoplankton dynamics within Gulf Stream intrusions on the southeastern United States continental shelf during summer 1981

1985 ◽  
Vol 4 (6) ◽  
pp. 611-635 ◽  
Author(s):  
James A. Yoder ◽  
Larry P. Atkinson ◽  
S. Stephen Bishop ◽  
Jackson O. Blanton ◽  
Thomas N. Lee ◽  
...  
Keyword(s):  
United States ◽  
Continental Shelf ◽  
Gulf Stream ◽  
Southeastern United States ◽  
Phytoplankton Dynamics

Subtropical pupping ground for a cold-water shark

2010 ◽  
Vol 67 (5) ◽  
pp. 769-773 ◽  
Author(s):  
Steven E. Campana ◽  
Warren Joyce ◽  
Mark Fowler
Keyword(s):  
Life History ◽  
Continental Shelf ◽  
Gulf Stream ◽  
Cold Water ◽  
Mature Female ◽  
Life History Stage ◽  
Sargasso Sea ◽  
Eastern Canada ◽  
Northern And Southern Hemispheres ◽  
Conservation And Management

Porbeagle sharks ( Lamna nasus ) are large pelagic sharks apparently restricted to the cold temperate waters of the northern and southern hemispheres. Despite considerable knowledge of their biology, their pupping (birthing) grounds have never been identified. Pop-up archival transmission tags applied to 21 sharks off eastern Canada indicated that males and immature sharks of both sexes remained primarily on the continental shelf for periods of up to 348 days after tagging. However, mature female porbeagles migrated up to 2356 km through the winter, at depths down to 1360 m beneath the Gulf Stream, to a subtropical pupping ground in the Sargasso Sea. In addition to this pupping ground being well south of their documented range, the placement of such a key life history stage in international, largely unregulated waters poses problems for the conservation and management of a species that is largely fished in Canadian waters.

scholarly journals Horizontal and Vertical Movement Patterns and Habitat Use of Juvenile Porbeagles (Lamna nasus) in the Western North Atlantic

2021 ◽  
Vol 8 ◽  
Author(s):  
Gregory Skomal ◽  
Heather Marshall ◽  
Benjamin Galuardi ◽  
Lisa Natanson ◽  
Camrin D. Braun ◽  
...  
Keyword(s):  
Continental Shelf ◽  
North Atlantic ◽  
Gulf Stream ◽  
Gulf Of Maine ◽  
Habitat Preferences ◽  
Fork Length ◽  
Vertical Movement ◽  
Vertical Movements ◽  
The North ◽  
History Of

The porbeagle (Lamna nasus) is a large, highly migratory endothermic shark broadly distributed in the higher latitudes of the Atlantic, South Pacific, and Indian Oceans. In the North Atlantic, the porbeagle has a long history of fisheries exploitation and current assessments indicate that this stock is severely overfished. Although much is known of the life history of this species, there is little fisheries-independent information about habitat preferences and ecology. To examine migratory routes, vertical behavior, and environmental associations in the western North Atlantic, we deployed pop-up satellite archival transmitting tags on 20 porbeagles in late November, 2006. The sharks, ten males and ten females ranging from 128 to 154 cm fork length, were tagged and released from a commercial longline fishing vessel on the northwestern edge of Georges Bank, about 150 km east of Cape Cod, MA. The tags were programmed to release in March (n = 7), July (n = 7), and November (n = 6) of 2007, and 17 (85%) successfully reported. Based on known and derived geopositions, the porbeagles exhibited broad seasonally-dependent horizontal and vertical movements ranging from minimum linear distances of 937 to 3,310 km and from the surface to 1,300 m, respectively. All of the sharks remained in the western North Atlantic from the Gulf of Maine, the Scotian Shelf, on George's Bank, and in the deep, oceanic waters off the continental shelf along the edge of, and within, the Gulf Stream. In general, the population appears to be shelf-oriented during the summer and early fall with more expansive offshore radiation in the winter and spring. Although sharks moved through temperatures ranging from 2 to 26°C, the bulk of their time (97%) was spent in 6-20°C. In the summer months, most of the sharks were associated with the continental shelf moving between the surface and the bottom and remaining < 200 m deep. In the late fall and winter months, the porbeagles moved into pelagic habitat and exhibited two behavioral patterns linked with the thermal features of the Gulf Stream: “non-divers” (n = 7) largely remained at epipelagic depths and “divers” (n = 10) made frequent dives into and remained at mesopelagic depths (200–1000 m). These data demonstrate that juvenile porbeagles are physiologically capable of exploiting the cool temperate waters of the western North Atlantic as well as the mesopelagic depths of the Gulf Stream, possibly allowing exploitation of prey not available to other predators.

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