An intense cold core eddy in the North-East Atlantic

Kupferman, S.L.; Becker, G.; Simmons, Wade; Schauer, Ursula; Marietta, M.G.; Nies, H.

doi:10.1038/319474a0

Cited by 35 publications

(16 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conductivity, temperature and depth-data (CTD-data) suggested the meander persisted to at least 2500 m. Geostrophic calculations yielded a cyclonic rotation around the meander with maximum speeds above 700 m depth from 10 cm S-' below to 36 cm S-' at the surface (Kupferman et al 1986). temperature of the eddy core and the ambient water rose by 1 to 2 C" during the 3 wk interval between the 2 surveys.…”

Section: Methods and Observationsmentioning

confidence: 99%

Cyclonic cold-core eddy in the eastern North Atlantic. I Physical description

Mittelstaedt¹

1987

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Section: Methods and Observationsmentioning

confidence: 99%

Cyclonic cold-core eddy in the eastern North Atlantic. I Physical description

Mittelstaedt¹

1987

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

“…The mechanism of formation of a cyclonic cold-core eddy from a Polar Front meander has been described by Kupferman et al (1986) and Mittelstaedt (1987). When it was first detected in April 1985, it had the form of a meander nearly 300 km long and only 40 km wide extending south-eastwards from the Polar Front (Kupferman et al 1986).…”

Section: Biotrans Publication Nomentioning

confidence: 99%

“…In the eastern part of the North Atlantic eddies have seldom been investigated (Le Groupe Tourbillon 1983, Kupferman et al 1986, Mittelstaedt 1987. They have only been studied with respect to their physical properties, but their impact on the distribution of nutrients, development and growth of planktonic organisms has not yet been described.…”

Section: Biotrans Publication Nomentioning

confidence: 99%

“…When it was first detected in April 1985, it had the form of a meander nearly 300 km long and only 40 km wide extending south-eastwards from the Polar Front (Kupferman et al 1986). The eddy was found again in May 1985 during the cruise Meteor 70/III, when routine surveys of the programmes NOAMP (Nord-Ost Atlantisches Monitoring Programm) and BIOTRANS (BIOlogical vertical TRANSport and energetics in the benthic boundary layer of the deep sea) were canied out in this area.…”

Section: Biotrans Publication Nomentioning

confidence: 99%

See 1 more Smart Citation

Cyclonic cold-core eddy in the eastern North Atlantic. II. Nutrients, phytoplankton and bacterioplankton

Lochte¹,

Pfannkuche²

1987

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

A cyclonic cold-core eddy in the Northeast Atlantic of about 100 km in diameter at the sea surface was investigated in May 1985, approximately 3 wk after it had separated from the Polar Front. A strong thermocline, which was shallower but more pronounced than in the ambient water, separated a warm surface layer within the eddy from deeper cold water, while horizontal salinity gradients marked the boundary to the ambient water. The cold-core eddy could be distinguished from amblent Northeast Atlantic water in terms of its nutrient chemistry, phytoplankton species distribution and abundance, bacterial numbers and cell size. The surface layer of the eddy was distinct from deeper eddy water, and was characterized by high concentrations of chlorophyll a, total phytoplankton biomass, dinoflagellates and bacteria. At the eddy's margin diatoms were predominant. It is argued that the physical isolation of the eddy surface layer due to the formation of a shallow thermocline led to rapid utilisation of nutrients. This probably enabled the development of a dinoflagellate-dominated phytoplankton population and of organisms capable of heterotrophic regenerative processes.

show abstract

“…1987). An intense cold-core eddy, analogue of the cold-core Gulf Stream rings known in the Northwest Atlantic, has been observed in the Northeast Atlantic (Kupferman et al 1986). Over the North Atlantic, the distribution of eddy-scale kinetic energy indicates variability associated with features of characteristic size of order 100 km, such as warm-core rings and meanders in western boundary currents.…”

Section: The F-ratio and Hypothesis I1mentioning

confidence: 99%

Biological production of the oceans: the case for a consensus

Piatt¹,

Harrison²,

Lewis³

et al. 1989

Mar. Ecol. Prog. Ser.

184

View full text Add to dashboard Cite

Biological dynamics in the pelagic ocean are intermittent rather than steady. In oceanic regimes, where nitrogen is limiting to phytoplankton growth, an important fraction of the annual, primary production depends on transient episodes of increased nitrate supply: at such times the role of locally-regenerated nitrogen is correspondingly less. Proper averaging of these variable rates, in time and space, is the key to reconciliation of existing data on the biogenic fluxes of oxygen and carbon in the ocean. The magnitude of oceanic production supported by nitrate (the new production) is higher than previously thought.

show abstract

An intense cold core eddy in the North-East Atlantic

Cited by 35 publications

References 7 publications

Cyclonic cold-core eddy in the eastern North Atlantic. I Physical description

Cyclonic cold-core eddy in the eastern North Atlantic. I Physical description

Cyclonic cold-core eddy in the eastern North Atlantic. II. Nutrients, phytoplankton and bacterioplankton

Biological production of the oceans: the case for a consensus

Contact Info

Product

Resources

About