Journal ArticleDOI
A surface‐trapped intrusion of slope water onto the continental shelf in the Mid‐Atlantic Bight
TLDR
In this paper, a high-resolution hydrographic transect across the shelfbreak south of Nantucket Shoals in August, 1995, revealed an unusual surface-trapped intrusion of saline slope water onto the continental shelf.Abstract:
A high-resolution hydrographic transect across the shelfbreak south of Nantucket Shoals in August, 1995, revealed an unusual surface-trapped intrusion of saline Slope water onto the continental shelf. The intrusion was confined to the upper 25 m of the water column and penetrated 15 km shoreward of the 100-m isobath, the typical position of the shelfbreak front. The maximum salinity within the intrusion was 35.0. Several strong jets were present within the surface layer with maximum velocities between 0.30 and 0.44 m s -1 in the alongshelf direction. Satellite thermal imagery confirms the presence of a warm-core ring at the offshore edge of the section and shows a warm feature penetrating shoreward of the 100-m isobath.read more
Citations
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Journal ArticleDOI
Satellite-derived sea surface temperature fronts on the continental shelf off the northeast U.S. coast
David S. Ullman,Peter Cornillon +1 more
TL;DR: The distribution and variability of sea surface temperature (SST) fronts, over the shelf and slope along the east coast of North America from Cape Hatteras to Nova Scotia, were studied using a 12-year time series (1985-1996) of advanced very high-resolution radiometer (AVHRR) images as discussed by the authors.
Journal ArticleDOI
Routes and rates of larval fish transport from the southeast to the northeast United States continental shelf
Jonathan A. Hare,James H. Churchill,Robert K. Cowen,Thomas J. Berger,Peter Cornillon,Paul Dragos,Scott Glenn,John J. Govoni,Thomas N. Lee +8 more
TL;DR: In this paper, the Gulf Stream and associated warm-core rings are hypothesized as the physical mechanisms responsible for the northward transport of larval fish originating south of Cape Hatteras, North Carolina, even as far north as the Scotian shelf.
Journal ArticleDOI
Dynamics of the direct intrusion of Gulf Stream ring water onto the Mid-Atlantic Bight shelf
Weifeng Zhang,Glen Gawarkiewicz +1 more
TL;DR: In this article, the authors present a direct intrusion of Gulf Stream warm-core ring water onto the shelf representing a previously unknown exchange process at the shelf break, which has important biogeochemical implications and could facilitate migration of marine species across the shelfbreak barrier and transport low-nutrient surface Gulf Stream ring water to the otherwise productive shelfbreak region.
Journal ArticleDOI
Sources and cycling of dissolved and particulate organic radiocarbon in the Northwest Atlantic Continental Margin
TL;DR: In this article, the ages, potential sources, and transformations of organic matter in an ocean margin system were evaluated using radiocarbon (A14C) and 613C distributions of total dissolved organic carbon, suspended particulate organic carbon (POC), and dissolved inorganic carbon (DIC) in waters of the Middle Atlantic Bight (MAB) continental shelf and slope.
Journal ArticleDOI
A climatology of salty intrusions over the continental shelf from Georges Bank to Cape Hatteras
TL;DR: In this paper, Salty slope water (Smax intrusions) are often found over the continental shelf of the Middle Atlantic Bight (MAB) in summer, and are concentrated at the depth of the seasonal pycnocline.
References
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Journal ArticleDOI
The Nantucket Shoals Flux Experiment (NSFE79). Part I: A Basic Description of the Current and Temperature Variability
TL;DR: The Nantucket Shoals Flux Experiment (NSFE79) as discussed by the authors was conducted across the continental shelf and upper slope of the South Atlantic from March 1979 to April 1980 to study the flow of shelf water from the Georges Bank/Gulf of Maine region into the Middle Atlantic Bight.
Journal ArticleDOI
Shelf-slope frontal structure and cross-shelf exchange at the New England shelf-break
TL;DR: In this paper, the SEEP-I array was used to study the structure and motion of the shelf-slope water front and the cross-shelf exchange of heat.
MonographDOI
HydroBase A Database of Hydrographic Stations and Tools for Climatological Analysis.
TL;DR: In this paper, the National Science Foundation through Grant OCE91-03364 and the National Oceanic and Atmospheric Administration through Contract Nos.======NA36GP0137 and NA46GP0303.
Journal ArticleDOI
A cyclonic eddy and shelf‐slope water exchange associated with a Gulf Stream warm‐core ring
Abstract: Warm-core ring (WCR) 83D passed through a linear array of moored temperature, conductivity and velocity sensors during October 1983. Satellite-derived thermal imagery combined with data from the moored sensors have revealed a cold-core cyclonic eddy, of approximately 80-km diameter, traveling in advance of ring 83D. This cyclone, whose angular momentum magnitude was about 1/3 that of the WCR, evolved either during or shortly after the WCR's formation. Hydrographic and moored sensor data suggest that the WCR brought about a subsurface exchange of shelf and slope water, with near-surface slope water moving onshore and near-bottom shelf water being drawn offshore and around the ring. Examination of 308 cross-shelf hydrographic sections from the Middle Atlantic Bight has indicated that such exchange commonly occurs in the presence of a WCR. This apparent ring-induced exchange may significantly affect the overall salt balance of Middle Atlantic Bight shelf water. As an example, the volume of slope water within a well-surveyed intrusion, which lay onshelf of WCR 79B, was 16% of Wright's (1976) estimate of the annual slope water transport to the Middle Atlantic Bight shelf.
Journal ArticleDOI
Observation of an anticyclonic eddy near the continental shelf break south of New England
TL;DR: A small scale but energetic and highly nonlinear anticyclonic eddy was observed near the New England Shelf Break in July 1983 as discussed by the authors, where the center of the eddy appears to undergo solid body rotation with a peak azimuthal velocity of 50 cm s−1 at a radius of 7 km to give an angular velocity ω = −7 × 10−5 s− 1 and Rossby number Ro = |ω|/f = 0.74.
Related Papers (5)
A climatology of the shelfbreak front in the Middle Atlantic Bight
Transport of Middle Atlantic Bight shelf water to the Gulf Stream near Cape Hatteras
James H. Churchill,Thomas Berger +1 more