New data on variations of stable isotopes in the pingo ice core in the southern part of the Tazovsky Peninsula

The aim of this work is to obtain the vertical isotopic profile of the thick Pestsovoe pingo ice core in the southern part of the Tazovsky Peninsula, to determine the oxygen and hydrogen isotopic composition of the ice, and to reveal its formation conditions. Two trends were identified for the isoto...

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Bibliographic Details
Published in:Doklady earth sciences 2017-02, Vol.472 (2), p.200-204
Main Authors: Vasil’chuk, Yu. K., Budantseva, N. A., Vasil’chuk, A. C., Rogov, V. V., Podborny, Ye. Ye, Chizhova, Ju. N.
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Fractionation
Geography
Ground ice
Ice
Isotopes
Stable isotopes
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Summary:The aim of this work is to obtain the vertical isotopic profile of the thick Pestsovoe pingo ice core in the southern part of the Tazovsky Peninsula, to determine the oxygen and hydrogen isotopic composition of the ice, and to reveal its formation conditions. Two trends were identified for the isotopic profile of the pingo ice: an insignificant increase of the δ 18 O (~1.5‰) and δD (~9‰) values at depths of 12–15 m and a gradual decrease of isotopic values by 3.8 and 23‰ for δ 18 O and δD, respectively, at a depth of 15–26 m. The formation of the pingo ice core in the semiclosed system resulted in fractionation of the isotopic composition of oxygen and hydrogen by more than 4 and 20‰, respectively.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X17020064