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Home Archive of journals Issue 4(24) 2016 Destabilization of relict methane hydrates with observed changes of regional climate

DESTABILIZATION OF RELICT METHANE HYDRATES WITH OBSERVED CHANGES OF REGIONAL CLIMATE

JOURNAL: 2016, 4(24), p. 46-51

RUBRIC: The study of the Arctic Ocean

AUTHORS: Arzhanov M.M., Mokhov I.I., Denisov S.N.

ORGANIZATIONS: A.M.Obukhov Institute of Atmospheric Physics Russian Academy of Sciences

UDC: 551.583

Keywords: permafrost, climate change, ice ages, relict gas hydrates

Bibliographic description: Arzhanov M.M., Mokhov I.I., Denisov S.N. Destabilization of relict methane hydrates with observed changes of regional climate. Arctic: ecology and economy, 2016, no. 4(24), pp. 46-51. DOI: . (In Russian).


ANNOTATION:

The calculations of the thermal state of soil of the Yamal Peninsula and adjacent regions for the last 90 thousand years are performed. According to the results, the depth of the upper boundary of stability zone of methane hydrates in the region could reach the surface under the climatic conditions of maximum glaciation about 90 thousand years ago. The estimates of the impact of current climate change on the strength of permafrost and stability of relict methane hydrates on the Yamal Peninsula are given. The formation of craters after gas emissions on the Yamal Peninsula may relate to destabilization of relict methane hydrates by increasing the surface temperature in recent years.


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DOI 10.25283/2223-4594