Similar glacial and Holocene Southern Ocean hydrography

Publication Type  Journal Article
Year of Publication  2001
Authors  Matsumoto, K.; Lynch-Stieglitz, J.; Anderson, R. F.
Journal Title  Paleoceanography
Volume  16
Issue  5
Pages  445-454
Journal Date  Oct
ISBN Number  0883-8305
Accession Number  ISI:000171072800001
Key Words  antarctic circumpolar current; oxygen isotopic composition; deep-water circulation; vostok ice core; benthic foraminifera; atlantic sector; atmospheric co2; surface waters; carbon-cycle; sea-ice

We present new Holocene and glacial delta O-18 data measured on planktonic foraminifera Neogloboquadrina pachyderma and benthic foraminifera Cibicidoides species from the Atlantic and Pacific sectors of the Southern Ocean in order to better understand its glacial hydrography. Combined with previously published data, the latitudinal delta O-18 distributions of these foraminifera show no appreciable difference during the Holocene and the Last Glacial Maximum. This suggests that the basic Southern Ocean hydrography, including stratification and the mean position of the Antarctic Circumpolar Current frontal system, remained largely unchanged, although the small number of Pacific data render any conclusion in that sector preliminary.


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URL  <Go to ISI>://000171072800001