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Oxygen-Isotope Measurements on 1700 ± 300 Year Old Antarctic Ice*

  • Wayne L. Hamilton (a1)

Abstract

Values of δ18OSMOW measured on ice from 250 m depth at old “Byrd station”. Antarctica, averaged about A monotonie trend in values through the 16 cm long core piece suggested that part of an annual layer was represented. Snow accumulation in excess of 14.4 g cm-2 year-1 ca 1 700 years B.P. is indicated.

Résumé

Les valeurs de la teneur en δ18OSMOW mesurées sur de la glace venant d’une profondeur de 250 m à la vieille “Byrd Station" en Antarctique sont en moyenne de Une tendance à trouver des valeurs semblables sur un môme élément de carotte de 16 cm de long suggère que l’on avait à taire à une mente couche d’accumulation annuelle. On indique un excès d’accumulation de neige de 14,4 g/cm2 et par an il y a environ 1 700 ans.

Zusammenfassung

Die Werte von δ18OSMOW die in Eis aus 250 m Tiefe an der alten “Byrd-Slation”, Antarktika, gemessen wurden, betrugen im Mittel etwa Ein gleichförmiger Verlauf der Werte durch das 16 cm lange Kernstuck weist darauf hin, dass es sich um den Teil einer Jahresschicht handelte. Für die Schnecakkumulation 1 700 Jahre vor der Gegenwart ergibt sich ein Wert von mehr als 14,4 g pro cm2 und Jahr.

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Copyright

Footnotes

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page 316 note *

Contribution No. 185 of the Institute of Polar Studies, Ohio State University, Columbus, Ohio 43210, U.S.A.

Footnotes

References

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Craig, H. 1957 Isotopic standards for carbon and oxygen and correction factors for mass–spectrometric analysis of carbon dioxide. Geochimica et. Cosmochimica Acta, Vol. iû, Nos. 1–2, p. 13349.
Epstein, S. Mayeda, T.K. 1953 Variation of O18 content of waters from natural sources. Geochimica et Cosmochimica Acta, Vol. 4, No. 5, p. 21324.
Epstein, S. 1970 Antarctic ice sheet: stable isotope analyses of Byrd station cores and inlerhemispheric climatic implications, by Epstein, S.,Sharp, R.P.,Gow, A.J..Science, Vol. 168, No. 3939 p. 157072.
Gow, A.J. 1968 Deep core studies of the accumulation and densification of snow at Byrd station and Little America, Antarctica U.S. Culd Regions Research and Engineering Laboratory.Research Report 197.
Picciotto, E.E. 1960 lsotopic composition and temperature of formation of Antarctic snows, by Picciotto, E. [E.],De Maere[d’Aertrycke], X.,Friedman, I..Nature, Vol. 187, No. 4740 p. 85759.

Oxygen-Isotope Measurements on 1700 ± 300 Year Old Antarctic Ice*

  • Wayne L. Hamilton (a1)

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