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Greenhouse gas formation in ice wedges at Cyuie, central Yakutia

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  • Kyungmin Kim
  • Ji‐Woong Yang
  • Hyunsuk Yoon
  • Eunji Byun
  • Alexander Fedorov
  • Yeongjun Ryu
  • Jinho Ahn

Abstract

Greenhouse gases (GHGs) trapped in ice wedges may provide useful information on biogeochemical environments in ground ice. Previous studies have reported highly elevated CO2 and CH4 mixing ratios in ice wedges. However, N2O mixing ratios in ice wedges remain unknown. Here, we present CO2, CH4 and N2O mixing ratios in bubbles and plausible mechanisms of GHG formation for two lakeside ice wedges at Cyuie village near Yakutsk. The CO2 gas age corresponds to the Last Glacial Maximum (18–19 ka). The δ(N2/Ar) values and bubble shapes indicate that the ice wedges formed by dry snow compaction rather than snowmelt water refreezing, while the δ18O and δD values of the ice indicate changes in the source area location and/or the climate during the Last Glacial Maximum. Using a dry extraction method, we obtained gas mixing ratios of 7–13% CO2, 5–130 ppm CH4 and 100–5000 ppb N2O. The δ(O2/Ar) values imply that most of the O2 was consumed by biological respiration. The CH4 is negatively correlated with N2O and CO2. The N2O might have inhibited CH4 production.

Suggested Citation

  • Kyungmin Kim & Ji‐Woong Yang & Hyunsuk Yoon & Eunji Byun & Alexander Fedorov & Yeongjun Ryu & Jinho Ahn, 2019. "Greenhouse gas formation in ice wedges at Cyuie, central Yakutia," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 30(1), pages 48-57, January.
    • Handle: RePEc:wly:perpro:v:30:y:2019:i:1:p:48-57
    DOI: 10.1002/ppp.1994
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    Cited by:

    1. Anfisa Pismeniuk & Petr Semenov & Alexandra Veremeeva & Wei He & Anna Kozachek & Sergei Malyshev & Elizaveta Shatrova & Anastasiia Lodochnikova & Irina Streletskaya, 2023. "Geochemical Features of Ground Ice from the Faddeevsky Peninsula Eastern Coast (Kotelny Island, East Siberian Arctic) as a Key to Understand Paleoenvironmental Conditions of Its Formation," Land, MDPI, vol. 12(2), pages 1-23, January.
    2. Trevor J. Porter & Thomas Opel, 2020. "Recent advances in paleoclimatological studies of Arctic wedge‐ and pore‐ice stable‐water isotope records," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 31(3), pages 429-441, July.

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