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Seasonal Thawing Local Changes Indicators for UAV-Based Cryolithozone Mapping

Abstract

Remote sensing methods make it possible to evaluate the reaction of the cryolithozone and tundra landscapes in hard-to-reach Arctic areas based on the indicators of modern climate changes. In 2016–2019, numerous organic frost boils were discovered on the peatland surfaces of drained lakes in the southern tundra of the Pur-Taz interfluve in the northern part of West Siberia and studied. It is established that the formation of frost boils caused by organic mass injections occurs in the summertime and that they indicate local deepening of seasonal thawing. Frost boils emerging at peatlands in summertime was identified after analysis of UAV survey in 2019. Local deepening of seasonal thaw layer on polygonal peatlands is evidence of permafrost reaction to global warming.

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Funding

This work was supported by the Russian Foundation for Basic Research, project no. 18–55–11005 АF_t, “Mechanisms, Trajectories, and Patchiness of Changes in Arctic Ecosystems Caused by Climate Warming (ClimEco),” project no. 18–05–60222 Arctic, “Cryogenic Relief-Forming Processes in the Arctic Plains with Massive Ground Ice under Modern Climatic Fluctuations along the Kara Sub-Latitudinal Transect” and project no. 19-45-890011, “Assessment of Polygonal Peatlands’ Sustainability to the Anthropogenic Impact under Climate Change in the Northern Part of the Pur-Taz Interfluve.”

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Correspondence to E. S. Koroleva.

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Translated by L. Mukhortova

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Koroleva, E.S., Khairullin, R.R., Babkina, E.A. et al. Seasonal Thawing Local Changes Indicators for UAV-Based Cryolithozone Mapping. Dokl. Earth Sc. 491, 179–182 (2020). https://doi.org/10.1134/S1028334X20030095

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  • DOI: https://doi.org/10.1134/S1028334X20030095

Keywords:

  • peatland
  • seasonal thaw layer
  • frost boils
  • UAV
  • climate conditions