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Snow Accumulation at “Byrd” Station, Antarctica

  • A. J. Gow (a1), F. de Blander (a2), G. Crozaz (a2) and E. Picciotto (a2)

Abstract

The rate of snow accumulation at “Byrd” station, Antarctica, was measured by various methods. Surface measurements yield a mean accumulation of 117 kg m−2 year−1 for the time interval 1962–70, within a 10 m radius of the station. The distribution of fission products with depth indicates a rate of 67 ± 4 kg m−2 year−1 for the period 1955–68 and of 100 ± 10 kg m−2 year−1 for the period 1965–68. The 210Pb method yields a 60 year average of 110 ± 10 kg m−2 year−1.

Résumé

Antarctique, Le taux d’accumulation de la neige à “Byrd” station, Antarctique, a été mesuré par diverses méthodes. Les mesures de surface fournissent une accumulation moyenne de 117 kg m−2 a−1 pour la période 1962–70, dans un rayon de 10 km autour de la station. La distribution des produits de fission en fonction de la profondeur indique des valeurs de 67 ± 4 kg m−2 a−1 pour la période 1955–68 et 100 ± 10 kg m−2 a−1 pour la période 1965–68. La méthode du 210 Pb donne une accumulation moyenne, sur les 60 dernières années, de 110 ± 10 kg m−2 a−1.

Zusammenfassung

Die Schneeakkumulation an der “Byrd”-Station, Antarktika, wurde nach verschiedenen Methoden gemessen. Messungen an der Oberfläche ergeben eine mittlere Akkumulation von 117 kg m−2 a−1 für die Zeitspanne 1962–70 innerhalb eines Kreises von 10 km Radius um die Station. Die Verteilung von Spaltprodukten in Abhängigkeit von der Tiefe führt zu einem Betrag von 67 ± 4 kg m−2 a−1 für die Zeit 1955–68 und von 100 ± 10 kg m−2 a−1 für die Zeit 1965–68. Die 210 Pb-Methode ergibt ü ber 60 Jahre ein Mittel von 110 ± 10 kg m−2 a−1.

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Copyright

References

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