The effect of ice sheets on the thermal state of the permafrost and the methane hydrates

Maxim M. Arzhanov; Valentina V. Malakhova; Igor I. Mokhov

doi:10.1117/12.2540599

18 December 2019 The effect of ice sheets on the thermal state of the permafrost and the methane hydrates

Maxim M. Arzhanov, Valentina V. Malakhova, Igor I. Mokhov

Proceedings Volume 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 112087E (2019) https://doi.org/10.1117/12.2540599
Event: XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2019, Novosibirsk, Russian Federation

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.

Citation Download Citation

Maxim M. Arzhanov, Valentina V. Malakhova, and Igor I. Mokhov "The effect of ice sheets on the thermal state of the permafrost and the methane hydrates", Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 112087E (18 December 2019); https://doi.org/10.1117/12.2540599

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