Antarctic Convergence


Also found in: Wikipedia.

Antarctic Convergence

[‚ant′ärd·ik kən′vər·jəns]
(oceanography)
The oceanic polar front indicating the boundary between the subantarctic and subtropical waters. Also known as Southern Polar Front.
References in periodicals archive ?
The convention applies to all Antarctic populations of fish, molluscs, crustaceans and sea birds South of the Antarctic Convergence (the "convention area").
Shortly after the boat crossed the Antarctic Convergence, a major zone of depression was rising in the south, on track to wallop the boat with winds reaching sixty knots.
The Antarctic Convergence Zone expedition, winner of last year's prestigious Neville Shulman Challenge Award, is being led by Dr Alun Hubbard from the University of Canterbury, New Zealand.
The Antarctic Convergence, which encircles Antarctica roughly 1,500 kilometres off the coast, divides the cold southern water masses and warmer northern waters.
The Antarctic convergence is where the cold dense surface waters of Antarctica meet the warm waters of the Atlantic, Pacific and Indian Oceans and sink beneath them.
At the southern edge of the Antarctic convergence there is a great increase in zooplankton density and biomass but these both decrease towards the south.
The communities of the intermediate area below the Antarctic convergence are dominated by copepods (more than 60%), although there are also abundant salps, members of the krill family, chaetognaths and amphipods.
In 1963 and 1964, scientists on two Antarctic research cruises of the vessel Eltanin found so many specimens of Gigantocypris muelleri in the waters of the Antarctic Convergence region (where antarctic surface waters and deeper subantarctic waters meet) that they suggested using the creature's presence as an indicator of the area.
The Antarctic Convergence Zone (where Antarctic cold and mid-latitude warm waters meet and mix) is seen to be a crucial location for such important scientific studies.

Full browser ?