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The effect of ice sheets on the thermal state of the permafrost and the methane hydrates
Author(s): Maxim M. Arzhanov; Valentina V. Malakhova; Igor I. Mokhov
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Paper Abstract

The dissociation of the pore metastable relict gas hydrates in permafrost as a consequence of the observed climate changes is one the possible reasons for the formation of gas craters in the northern part of West Siberia. Using the heat transfer model in the glacier-soil system, the temperature field in the permafrost under the ice sheet was calculated. The methane hydrate stability zone in the permafrost soils with typical and increased geothermal flows was determined. The results have showen that about 60 thousand years ago under the ice sheets on the Yamal Peninsula in the Pleistocene, the methane hydrates could form near the surface. Formed near the surface, methane hydrates could later transform into the relict hydrates.

Paper Details

Date Published: 18 December 2019
PDF: 5 pages
Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 112087E (18 December 2019); doi: 10.1117/12.2540599
Show Author Affiliations
Maxim M. Arzhanov, A.M. Obukhov Institute of Atmospheric Physics (Russian Federation)
Valentina V. Malakhova, Institute of Computational Mathematics and Mathematical Geophysics (Russian Federation)
Igor I. Mokhov, A.M. Obukhov Institute of Atmospheric Physics (Russian Federation)
Moscow State. Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 11208:
25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Oleg A. Romanovskii; Gennadii G. Matvienko, Editor(s)

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