A description of the circulation on the continental shelf of the east coast of the United States

Bumpus, Dean F.

doi:10.1016/0079-6611(73)90006-2

Cited by 192 publications

(103 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bigelow (1927) first described the anticyclonic gyre on Georges Bank. From the release of surface and bottom drift devices, Bumpus & Lauzier (1965) and Bumpus (1973Bumpus ( , 1976 estimated that surface drift was on the order of 2 to 3 n miles d-l. Bottom drift moved in the same direction as surface water but at a slower Butman et al (1982), the 10 to 40 m depth distribution of most haddock larvae (Miller et al 1965), and the distribution patterns of intermediate and large haddock larvae in Fig. 5, 6 & 7, w e conclude that: (1) the westward displacement of larvae tends to parallel isobaths and, therefore, must be influenced largely by the gyre; (2) the displacement covers a maximum straight line distance of 140 n mile (252 km), thus our transport theory is consistent with mean current velocities presented by Butman et al (1982) and growth rates of young haddock in Bolz & Lough (1983); (3) larvae associated with the outside of the Georges Bank gyre pass south of Great South Channel with most subsequently finding their way onto Nantucket Shoals; (4) larvae associated with the inside of the gyre are caught up in recirculating water and advected north along the eastern side of the channel, thus remaining on Georges Bank.…”

Section: Discussionmentioning

confidence: 99%

Retention of larval haddock Melanogrammus aeglefinus in the Georges Bank region, a gyre-influenced spawning area

Smith¹,

Morse²

1985

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Retention of larval haddock Melanogrammus aeglefinus in the Georges Bank region, a gyre-influenced spawning area

Smith¹,

Morse²

1985

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

“…Inshore currents south of Cape Hatteras are variable. South flowing geostrophic currents are periodically interrupted by inshore movement of the Florida Current which causes a northward flow (Bumpus, 1973}. There are three different kinds of important temperature transitions in the region. From north°to south there is an abrupt change in water temperature at Cape Hatteras where the Florida Current meets the Virginia coastal water {Gray & Cerame-Vivas, 1963}.…”

Section: Currentsmentioning

confidence: 99%

Seaweed biogeography of the mid-Atlantic coast of the United States

Searles

1984

Helgolander Meeresunters

View full text Add to dashboard Cite

ABSTRACT:The northern boundary of the warm temperate region of the mid-Atlantic coast of the United States is set at Cape Hatteras; the southern boundary lies at Cape Canaveral. There is some spillover of cool temperate species south of Cape Hatteras into North Carolina and spillover of warm temperate species south of Cape Canaveral toward Palm Beach. Elements of the warm temperate flora also extend into the northern Gulf of Mexico, but precise limits to the flora cannot be drawn there. Thirty-one species are endemic to the warm temperate flora. The inshore waters of North Carolina include approximately equal numbers of species with northern and southern centres of distribution; the species of the offshore waters have predominantly southern affinities, but also include most of the endemic species. Seasonal changes in the shallow water flora of North Carolina reflect eurythermal cool temperate and tropical elements in winter and summer respectively and a year-round warm temperate element. These groupings have been verified by experimental studies in which light and temperature were varied. The deep water flora is a summer flora dominated by perennial species. The inshore, eurythermal cool temperate and tropical species have a variety of cryptic stages by which they persist throughout the year.

show abstract

“…What little that was known (see Bumpus, 1973) was derived from drifter measurements and a vast but largely intermittent collection of temperature and salinity measurements. These measurements served to outline features of the continental shelf circulation in very general terms for motion with seasonal or longer time scales and with space scales of several hundred km.…”

Section: Introductionmentioning

confidence: 99%

The kinematics and dynamics of the New England continental shelf and shelf/slope front

Flagg¹

1977

View full text Add to dashboard Cite

A 37 day long field program was carried out in March 1974 on the New England continental shelf break to study the current and hydrographic structure and variability on the shelf and in the shelf/slope front. A second experiment was conducted in the shelf break region for one week in January 1975 to study frontal exchange processes.The mean currents during the March 1974 experiment all had a westward alongshore component, increasing in magnitude progressing offshore from 15 cm/sec to a maximum at the nearshore edge of the shelf/slope front of between 10 and 20 cm/sec, and decreasing in magnitude with depth. The current structure was such that the velocity vector rotated clockwise with depth in the shelf waters inside the front. The mean alongshore transport of shelf water was on the order of 0.4 Sverdrups through a cross-shelf transect south of Block Island. About 30% of the transport occurred in the wedge-shaped region offshore of the 100 m isobath and inshore of the front. Comparison of the observed mean currents with those predicted by the steady frictional boundary layer model of Csanady (1976) indicates that the model captures most of the essential features of the shelf circulation.The low frequency currents contain approximately 30% of the total current variance. An empirical orthogonal modal analysis indicates that for low frequency alongshore motions the whole shelf together with the water above the front moves as a unit and that the on-offshore currents are characterized by opposing flows at surface and bottom. The alongshore wind stress component is the dominant forcing term for these low frequency motions and for the subsurface pressure field as well. For motion with periods longer than 33 hours, the time derivative term in the cross-shelf momentum balance is comparable with the Coriolis term while the advective terms are 2 to 10 times smaller, on the average.The semi-diurnal tide is barotropic over the shelf with current magnitudes that increase almost by a factor of two between the shelf break and the inshore mooring 70 km shoreward. At the shelf break onedimensional continuity gives the correct relation between the surface tide and the semi-diurnal currents. The semi-diurnal tide is clockwise polarized. The diurnal tide is baroclinic, increasing somewhat toward the bottom, is less clockwise polarized than the semi-diurnal, and has tidal ellipses aligned with the isobaths. The diurnal tidal energy decreases toward shore.Inertial energy in the frontal zone is equal to the semi-diurnal tidal energy near the surface. The inertial energy decreases with depth and is an order of magnitude smaller further on the shelf. The inertial oscillations are shown to be highly correlated with the wind stress record, arising and decaying on a time scale of 3 to 4 days. The inertial oscillations are shown to be preferentially forced by wind stress events that have a large amount of clockwise energy at near inertial periods.The frontal zone is shown to be in near geostrophic balance with an anticipated vertical ...

show abstract

A description of the circulation on the continental shelf of the east coast of the United States

Cited by 192 publications

References 36 publications

Retention of larval haddock Melanogrammus aeglefinus in the Georges Bank region, a gyre-influenced spawning area

Retention of larval haddock Melanogrammus aeglefinus in the Georges Bank region, a gyre-influenced spawning area

Seaweed biogeography of the mid-Atlantic coast of the United States

The kinematics and dynamics of the New England continental shelf and shelf/slope front

Contact Info

Product

Resources

About