Doklady Earth Sciences

, Volume 476, Issue 1, pp 1069–1072 | Cite as

Permafrost aggradation and methane production in low accumulative laidas (tidal flats) of the Kara Sea

  • A. A. Vasiliev
  • V. P. Melnikov
  • I. D. Streletskaya
  • G. E. Oblogov
Geography
  • 27 Downloads

Abstract

It was established that along with permafrost degradation, the processes of permafrost aggradation occur in the modern low accumulative surfaces of Kara Sea. The cycle of observation over the permafrost thermal regime was performed. The mean annual temperatire of the permafrost varies from – 3.5 to – 4.8°C; the thermal flux into the permafrost can reach 8 W/m2. The methane genesis process is realized only in the seasonally thawed layer. It was found that temperature – 4.0°C is threshold for the bacterial methane production.

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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • A. A. Vasiliev
    • 1
    • 2
  • V. P. Melnikov
    • 1
    • 2
    • 3
  • I. D. Streletskaya
    • 4
  • G. E. Oblogov
    • 1
    • 2
  1. 1.Institute of the Earth’s Cryosphere, Siberian BranchRussian Academy of SciencesTyumenRussia
  2. 2.Tyumen State UniversityTyumenRussia
  3. 3.Tyumen Scientific Center, Siberian BranchRussian Academy of SciencesTyumenRussia
  4. 4.Moscow State UniversityMoscowRussia

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