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


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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 δ18O (~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 δ18O 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.

Sobre autores

Yu. Vasil’chuk

Moscow State University

Autor responsável pela correspondência
Email: vasilch_geo@mail.ru
Rússia, Moscow, 119991

N. Budantseva

Moscow State University

Email: vasilch_geo@mail.ru
Rússia, Moscow, 119991

A. Vasil’chuk

Moscow State University

Email: vasilch_geo@mail.ru
Rússia, Moscow, 119991

V. Rogov

Moscow State University

Email: vasilch_geo@mail.ru
Rússia, Moscow, 119991

Ye. Podborny

OOO Center for Hydroecological Research

Email: vasilch_geo@mail.ru
Rússia, St. Petersburg, 199406

Ju. Chizhova

Moscow State University

Email: vasilch_geo@mail.ru
Rússia, Moscow, 119991

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