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Subsea Permafrost Thawing as a Factor of Changes in the Elemental Composition

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Abstract

The differences in the concentration of elements between thawed and frozen sediments were shown in the samples from two boreholes from the coastal zone of the Laptev Sea (Buor-Khaya Bay). The thalassogenic nature of enrichment of thawed deposits with sodium, chlorine, and to a lesser degree sulfur and phosphorus was confirmed. The difference in the concentration of chlorine between thawed and frozen soils may reach two orders.

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ACKNOWLEDGMENTS

The field studies were carried out with the support of the Government of the Russian Federation (contract no. 14.Z50.31.0012) and by the Russian Science Foundation (grant no. 14-50-00095). Material processing and analyses were performed within the framework of the state task of the Institute of Oceanology, Russian Academy of Sciences (project no. 0149-2018-0005), with partial support of the Russian Foundation for Basic Research (project no. 16-05-00017).

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Authors and Affiliations

  1. Shirshov Institute of Oceanology, Russian Academy of Sciences, 117218, Moscow, Russia

    A. S. Ulyantsev & E. A. Romankevich

  2. Institute of Chemistry, Far East Branch, Russian Academy of Sciences, 690022, Vladivostok, Russia

    N. V. Polyakova &  S. Yu. Bratskaya

  3. Tomsk Polytechnic University, 634050, Tomsk, Russia

    E. A. Romankevich

Authors
  1. A. S. Ulyantsev
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  2. N. V. Polyakova
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  3. S. Yu. Bratskaya
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  4. E. A. Romankevich
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Correspondence to A. S. Ulyantsev.

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Translated by M. Cherbunina

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Ulyantsev, A.S., Polyakova, N.V., Bratskaya, S.Y. et al. Subsea Permafrost Thawing as a Factor of Changes in the Elemental Composition. Dokl. Earth Sc. 483, 1480–1484 (2018). https://doi.org/10.1134/S1028334X18110235

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  • DOI: https://doi.org/10.1134/S1028334X18110235

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