Shelf-slope frontal structure and cross-shelf exchange at the New England shelf-break

Houghton, Robert W.; Aikman, Frank; Ou, Hsien-Wang

doi:10.1016/0278-4343(88)90072-6

Cited by 90 publications

(64 citation statements)

References 19 publications

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“…Now a common density surface connects the shelf and slope waters, facilitating the cross-frontal exchange of water parcels [Aikman, 1984]. This summer isopycnal flattening has also been commented on by Houghton et al [1988]. The Aug/Sep period shows a "typical" summer density field; it is very similar to the Houghton pycnocline has now strengthened to a vertical density difference of 3 kg m-3 (N 2 -1.1 x w-3 s-2 ), which is within the range of 3.0-4.0 kg m-3 observed by Beardsley and Flagg [1976].…”

Section: Gridding and Dynamic Calculationsmentioning

confidence: 82%

“…The hydrographic observations are summarized by Houghton et al [1988] and the current meter observations by Aikman et al [1988]. The primary goals of SEEP-I were to study the motion of the shelfbreak front and the cross-shelf exchange of carbon.…”

Section: Burrage and Garvinementioning

confidence: 99%

“…Beneath the thermocline lies the "cold pool", a remnant of winter water colder than 10 °C, shown clearly in the summer temperature plot in Figure 1.3. Based on the variation of temperature at the foot of the front, Houghton et al [1988] found that in the winter the front experienced 10-20 km oscillations about its mean location near the 100 m isobath. In the summer, the wind stress and frontal oscillations decreased.…”

Section: Burrage and Garvinementioning

confidence: 99%

“…Wright [1976] Houghton et al, 1988) intersected the bottom within 16 km of the 100 m isobath 80% of the time. He also observed a northward progression in frontal position during the spring and summer months.…”

Section: Burrage and Garvinementioning

confidence: 99%

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A climatology of the Middle Atlantic Bight shelfbreak front

Linder¹

1996

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Section: Gridding and Dynamic Calculationsmentioning

confidence: 82%

Section: Burrage and Garvinementioning

confidence: 99%

Section: Burrage and Garvinementioning

confidence: 99%

Section: Burrage and Garvinementioning

confidence: 99%

See 2 more Smart Citations

A climatology of the Middle Atlantic Bight shelfbreak front

Linder¹

1996

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“…The along-shelf current, however, can transport larvae away from the region (Polacheck et al 1992, Lozier & Gawarkiewicz 2001. These currents are subject to local forcing such as wind (Noble et al 1985, Houghton et al 1988 as well as remote forcing such as the coldwater intrusions from the Nova Scotian Shelf (Greene & Pershing 2003) and warm core rings from the Gulf Stream (Beardsley et al 1985). Variations in the circulation can lead to interannual changes in larval dispersion and retention.…”

Section: Introductionmentioning

confidence: 99%

Modeling the connectivity between sea scallop populations in the Middle Atlantic Bight and over Georges Bank

Tian¹,

Chen²,

Stokesbury³

et al. 2009

Mar. Ecol. Prog. Ser.

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The dispersion and settlement of sea scallop larvae spawned on Georges Bank (GB) and in the Great Southern Channel (GSC) were explored using an individual-based population dynamics model. The model consisted of 4 pelagic life stages (egg, trochophore, veliger, and pediveliger) and 3 benthic life stages (juvenile, young adult, and adult). It was driven by the 1995 to 2005 hindcast flow field predicted by the Finite Volume Coastal Ocean Model (FVCOM) in the Gulf of Maine (GOM), with spawning stocks specified by field survey data. In 1998In , and 2005, a large amount of larvae drifted southward along the shelf break to the Middle Atlantic Bight (MAB). The potential for long-distance southward transport of larvae was dependent on the upstream flow conditions on the Nova Scotian Shelf, climate forcing, and the timing and location of spawning on GB. The model also predicts considerable larval exchange between the GB and the GSC subpopulations, with 83% of larvae settled in the GSC being spawned on GB, and 46% of larvae settled on GB being spawned in the GSC on average from 1995 to 2005.

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An anomalous near-bottom cross-shelf intrusion of slope water on the southern New England continental shelf

Ullman

Codiga

Pfeiffer-Herbert

et al. 2014

J. Geophys. Res. Oceans

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Hydrographic surveys and moored observations in Rhode Island Sound (RIS) in water depths of 30-50 m, off the southern New England coast, revealed a near-bottom intrusion of anomalously warm and saline water in late fall 2009. The properties of this water mass, with peak salinity of nearly 35, are typical of slope water that is normally found offshore of the shelfbreak front, located approximately 100 km to the south. The slope water intrusion, with a horizontal spatial scale of about 45 km, appears to have been brought onto the outer shelf during the interaction of a Gulf Stream warm core ring with the shelfbreak east (upshelf) of RIS. The along-shelf transport rate of the intrusion can be explained as due to advection by the mean outer-shelf along-isobath current, although the transit time of the intrusion is also consistent with the self-advection of a dense bolus on a sloping shelf. The mechanism responsible for the large onshore movement of the intrusion from the outer shelf is not entirely clear, although a wind-driven upwelling circulation appeared to be responsible for its final movement into the RIS region. Depth-averaged salinity at all RIS mooring sites increased by 0.5-1 over the 3-4 week intrusion period suggesting that the intrusion mixed irreversibly, at least partially, with the ambient shelf water. The mixing of the salty intrusion over the shelf indicates that net cross-isobath fluxes of salt and other water properties have occurred.

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Shelf-slope frontal structure and cross-shelf exchange at the New England shelf-break

Cited by 90 publications

References 19 publications

A climatology of the Middle Atlantic Bight shelfbreak front

A climatology of the Middle Atlantic Bight shelfbreak front

Modeling the connectivity between sea scallop populations in the Middle Atlantic Bight and over Georges Bank

An anomalous near-bottom cross-shelf intrusion of slope water on the southern New England continental shelf

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