The Agulhas Current in March 1969

Harris, T.F.W.; Foreest, D. van

doi:10.1016/0146-6291(78)90643-4

Cited by 44 publications

(20 citation statements)

References 6 publications

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“…He goes on (p. 74) "It must thus be assumed that such patches rapidly lose their dynamic integrity and are dissipated by spreading and mixing." Harris and Van Foreest (1978), who presented the vertical sections from the cruises, showed that Bang's "patch" was a deep-reaching eddy. This eddy had the characteristics of an Agulhas ring and appeared in nearly the same position as the various "Cape Town eddies" described below, which occur with regularity in this position (Lutjeharms and Valentine 1988).…”

Section: Occurrencementioning

confidence: 97%

“…Via the Agulhas Current the water reaches the southern point of Africa. The waler may enter the South Atlantic as rings shed from the Agulhas Retroflection (Lutjeharms 1981a, Gordon 1985 or as intermittent direct leakage of Agulhas Current water (Harris and Van Foreest 1978, Gordon 1985, Shannon et al 1990). This flow into the Atlantic from the Indian Ocean has been observed in global ocean circulation models (e.g.…”

Section: The Thermohaline Conveyor Beltmentioning

confidence: 97%

“…A major three-ship survey in March 1969 (Bang 1970a, b, Harris andVan Foreest 1978) showed the inherently generic nature of the retroflection and that the terminal region was populated by a range of eddies. Bang (1970a) suggested that these eddies might move into the South Atlantic.…”

Section: Occurrencementioning

confidence: 99%

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Agulhas retroflection rings in the South Atlantic Ocean: an overview

Rae¹

1991

South African Journal of Marine Science

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The most energetic western boundary current rings in the world's oceans are shed from the Agulhas retroflection south of Africa. These are responsible for a considerable transfer of heat, salt and energy from the South Indian Ocean into the South Atlantic. This transfer has important implications for global ocean circulation. In addition, the rings have some important local effects (e.g. on weather and on the Benguela upwelling system) in their passage across the South Atlantic. Since 1983, hydrographic studies have begun to examine these rings and their effects. These studies are reviewed in both global and local contexts.Die mees energieke ringe wat van westelike grensslfome ter wereld afgewerp word, is die atKomstig van die Agulhas-retrofleksie besuide Afrika. Hulle is verantwoordelik vir aansienlike oordrag van warmte, sout en energie van die Suid-lndiese na die Suid-Atlantiese Oseaan. Hierdie oordrag het belangrike implikasies vir die wereldoseaansirkulasie. Daarbenewens het die ringe etlike belangrik plaaslike uitwerkings (bv. op die weer en op die Benguela-opwelstelsel) tydens hul deurgang oor die Suid-Atlantiese Oseaan. Sedert \983 is begin met hidrografiese studies van hierdie ringe en hul uitwerking. Hierdie studies word in wereld-en plaaslike verband in oenskou geneem.

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Section: Occurrencementioning

confidence: 97%

Section: The Thermohaline Conveyor Beltmentioning

confidence: 97%

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Agulhas retroflection rings in the South Atlantic Ocean: an overview

Rae¹

1991

South African Journal of Marine Science

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“…Although the Agulhas Current has been studied many times over the last century, while its spatial characteristics have become comparatively well understood, its deep vertical structure remains virtually unknown. Accurate measurements of its volume transport have been hampered by the lack of direct velocity observations at depth, so that estimates for the volume transport of the Agulhas Current are disparate, varying by an order of magnitude from 9 to 91 Sv [Dietrich, 1935;Duncan, 1970;Lutjeharms, 1972;Darbyshire, 1972;Harris, 1972;Jacobs and Georgi ,1977;Harris & van Foreest, 1978;Toole and Warren, 1993]. A more detailed exploration of the literature is given by Beal [1997].…”

Section: Introductionmentioning

confidence: 99%

The velocity and vorticity structure of the Agulhas Current at 32°S

Beal¹,

Bryden²

1999

J. Geophys. Res.

136

114

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Abstract. The full depth velocity field of the Agulhas Current, the Western Boundary Current of the southwest Indian Ocean, has been directly measured using a lowered acoustic Doppler current profiler (LADCP). Fifteen combined conductivity-temperature-depth (CTD) and LADCP stations were occupied across the current at 32øS off the east coast of South Africa in February-March 1995, as part of the World Ocean Circulation Experiment Indian Ocean program. The deep velocity structure of the Agulhas Current was found to be very different than previously described using geostrophic estimates.

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“…Despite a diverse range of methods to measure PSD, several challenges FIGURE 7 Considerations for PSDs when examining particles in natural waters. Data from Harris (1977) 94 . remain in the forefront. At the most fundamental level, the different ways of presenting the central size value, and the distribution of particles around this value, lead to potential for ambiguity.…”

Section: Discussionmentioning

confidence: 99%