Analyse des isotopes de l'helium dans la calotte polaire Antarctique: resultats preliminaires au site Vostok

Translated title of the contribution: Measurement of helium istopes in Antarctic ice: preliminary results from Vostok

P. Jean-Baptiste, D. Raynaud, F. Mantisi, T. Sowers, N. Barkov

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7 Scopus citations

Abstract

Samples of ice from a short core drilled at the Vostok station were analysed for 3He and 4He. The samples were taken from below the firn-ice transition region (which lies 90-100 m below the surface). Results suggest that between 27 and 42% of the initial helium had escaped before the ice samples were incorporated into the copper sample tubes. The different causes of bias, principally linked to the high diffusivity of He in ice, are reviewed and discussed. There is an abridged English version. -from English summary

Translated title of the contributionMeasurement of helium istopes in Antarctic ice: preliminary results from Vostok
Original languageFrench
Pages (from-to)491-497
Number of pages7
JournalComptes Rendus - Academie des Sciences, Serie II
Volume316
Issue number4
StatePublished - Jan 1 1993

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Engineering(all)
  • Earth and Planetary Sciences(all)

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