The cryogenic origin of the Yamal phenomenonтезисы доклада

Работа с тезисами доклада


[1] The cryogenic origin of the yamal phenomenon / S. Buldovich, V. Khilimonyuk, A. Bychkov et al. // International Conference “Solving the puzzles from Cryosphere” : Program, Abstracts : Pushchino, Russia, April 15–18, 2019. — Москва, 2019. — P. 32–34. The subject of the report is the results of a study of a unique natural crater-shaped object in the central part of the Yamal Peninsula, carried out in 2015 by the research team of Lomonosov Moscow State University, Geological Faculty supported by Innopraktika and PAO NOVATEK On the basis of the materials obtained, the authors developed their own concept of a cryogenic origin of the Yamal Crater, explaining its formation by the process of cryovolcanic event on the Earth. Cryovolcanism is understood as the explosion-like effusive destruction of pingo with the eruption of a substance under the action of high cryogenic pressures as a result of freezing of closed water and gas saturated systems (a closed talik). The estimates have shown that the explosive destruction of the pingo is not related to the climatic anomalies of individual years. The explosion itself, presumably, took place in several stages. At the first stage, gas is predominantly ejected from the upper part of the talik and scattering of the frozen fragments of the “cover”. At the second stage of the eruption, degassing (“boiling”) of water filling the talik, accompanied by an intense outpouring of the water-soil mixture from the crater. The final stage of the eruption is the release of gas from the thawed soil both by degassing the pore solution and, possibly, due to the decomposition of carbon dioxide hydrates.

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