Mixing in the West Spitsbergen Current

Perkin, R. G.; Lewis, E. L.

doi:10.1175/1520-0485(1984)014<1315:mitwsc>2.0.co;2

Cited by 168 publications

(70 citation statements)

References 0 publications

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“…We consider intrusions observed north of Svalbard in the Arctic Ocean (Perkin and Lewis, 1984). Recently, we performed an analysis of the intrusions (May and Kelley, 2001) and we use the results of that study here.…”

Section: Arctic Ocean Frontmentioning

confidence: 99%

“…They are made visible by large fluctuations, or inversions, in the profiles and as zig-zag patterns in temperature-salinity plots. These features typically have vertical scales of 10-100 m and horizontal scales of 1-100 km (Stommel and Fedorov, 1967;Joyce et al, 1978;Perkin and Lewis, 1984;Ruddick and Hebert, 1988). In the presence of horizontal gradients of temperature and salinity, the intrusive signature may be produced by vertically-alternating lateral currents across ocean fronts.…”

Section: Introductionmentioning

confidence: 99%

“…In a recent study of thermohaline intrusions in the Arctic Ocean, May and Kelley (2001) applied instability and steady-state models to intrusions observed north of Svalbard (Perkin and Lewis, 1984). Based on observed intrusion slopes, it was suggested that the interleaving was likely driven by salt fingering during the growth of the intrusions, but that diffusive convection was likely the dominant form of double diffusion at steady state.…”

Section: Introductionmentioning

confidence: 99%

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Contrasting the interleaving in two baroclinic ocean fronts

May

Kelley

2002

Dynamics of Atmospheres and Oceans

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To investigate the effects of baroclinicity on frontal interleaving, we contrast the interleaving characteristics of two fronts, one in the Arctic Ocean and the other surrounding a Mediterranean salt lens (Meddy). The Meddy is broken into two parts based on the vertical temperature and salinity structure, so our comparison involves three sets of interleaving observations. The cross-front slopes of intrusions relative to horizontal and isopycnal surfaces are taken to be key diagnostics of the interleaving dynamics. Assuming the observed slopes match those that were present during the initial growth of interleaving, we use an instability theory to infer the dominant form of double diffusion that was active during the growth stage. Then, to investigate the observed interleaving, we use a steady-state model to infer the dominant form of double diffusion at the time of observation. In the Arctic Ocean front, it appears that different forms of double diffusion dominated the two stages of interleaving (salt fingering during the growth stage and diffusive convection at steady state). In contrast, in the Meddy, the same form of double diffusion appears to have dominated both stages of interleaving (salt fingering in the lower part of the Meddy, diffusive convection in the upper part). In the Arctic Ocean front, the observations suggest that interleaving was driven by baroclinicity as well as double diffusion. In both parts of the Meddy, however, driving was by double diffusion only. Motivated by these differences, we suggest a new intrusion classification scheme, based on the slopes of intrusions relative to horizontal and isopycnal surfaces.

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Section: Arctic Ocean Frontmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Contrasting the interleaving in two baroclinic ocean fronts

May

Kelley

2002

Dynamics of Atmospheres and Oceans

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“…These agencies might include differential mixing (Hebert, 1999;Merryfield, 2000a,b;Gargett, 2002) and baroclinic instability (May and Kelley, 2001a). Regardless of the formation mechanism, though, there are indications of the relevance of DDC to the observed phase of the interleaving, in the form of steppiness between interleaving water-masses (Perkin and Lewis, 1984). This suggests that the centimeter-scale DDC processes have links to remarkably large space and time scales, for the intrusions have been traced over hundreds of kilometers and they appear to be coherent even over decades (Perkin and Lewis, 1984;Carmack et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

The diffusive regime of double-diffusive convection

Kelley

Fernando

Gargett

et al. 2003

Progress in Oceanography

170

189

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The diffusive regime of double-diffusive convection is reviewed, with a particular focus on issues that are holding up the development of large-scale parameterizations. Some of these issues, such as interfacial transports and layer-interface interactions, may be studied in isolation. Laboratory work should help with these. However, we must also face more difficult matters that relate to oceanic phenomena that are not easily represented in the laboratory. These lie beneath some fundamental questions about how double-diffusive structures are formed in the ocean, and how they evolve in the competitive ocean environment.

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“…In contrast to Fram Strait proper, the area north of the strait has been less systematically studied and mainly by extensive, but shorter, ®eld campaigns: e.g., the airborne Eurasian Basin Experiment (EUBEX) in the western Eurasian Basin (Perkin and Lewis, 1984), partly MIZEX, and the Co-ordinated Eastern Arctic Experiment (CEAREX) north of Svalbard and over the Yermak Plateau Padman et al, 1992). The general hydrographic conditions in the area and their relations to the Arctic Ocean and to the Greenland Sea can be found in the atlases compiled by Gorshkov (1980) and Koltermann and LuÈ thje (1987).…”

Section: Introductionmentioning

confidence: 99%

Water mass distribution in Fram Strait and over the Yermak Plateau in summer 1997

Rudels¹,

Meyer

Fahrbach

et al. 2000

Annales Geophysicae

117

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Abstract. The water mass distribution in northern FramStrait and over the Yermak Plateau in summer 1997 is described using CTD data from two cruises in the area. The West Spitsbergen Current was found to split, one part recirculated towards the west, while the other part, on entering the Arctic Ocean separated into two branches. The main in¯ow of Atlantic Water followed the Svalbard continental slope eastward, while a second, narrower, branch stayed west and north of the Yermak Plateau. The water column above the southeastern¯ank of the Yermak Plateau was distinctly colder and less saline than the two in¯ow branches.

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Mixing in the West Spitsbergen Current

Cited by 168 publications

References 0 publications

Contrasting the interleaving in two baroclinic ocean fronts

Contrasting the interleaving in two baroclinic ocean fronts

The diffusive regime of double-diffusive convection

Water mass distribution in Fram Strait and over the Yermak Plateau in summer 1997

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