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Glacial-interglacial changes in ocean surface conditions in the Southern Hemisphere.

Author(s) : VIMEUX F., MASSON V., JOUZEL J., STIEVENARD M., PETIT J. R.

Type of article: Article

Summary

The stable-isotope signatures of oxygen and hydrogen in the water of preserved ice and snow are both widely used to infer local temperatures of past environments. A derived quantity based on these two signatures, the 'deuterium excess', provides additional palaeoclimatic information. In the paper the authors present a deuterium-excess history obtained from ice cores from Vostok, East Antarctica, spanning the full glacial-interglacial cycle of the past 150,000 years. The deuterium-excess record shows a strong anticorrelation with the Earth's orbital obliquity. The deuterium-excess in Antarctic precipitation provides long-term, spatially integrated information on ocean surface conditions and ocean/atmosphere circulations in the Southern Hemisphere.

Details

  • Original title: Glacial-interglacial changes in ocean surface conditions in the Southern Hemisphere.
  • Record ID : 1999-3926
  • Languages: English
  • Subject: Environment, General information
  • Source: Nature - vol. 398 - n. 6726
  • Publication date: 1999/04/01
  • Document available for consultation in the library of the IIR headquarters only.

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