The appearance of the crater on the Yamal Peninsula has accused methane from melting permafrost

Possible causes of Irkutskogo crater on the Yamal Peninsula are a bundle of talik enriched gases because of dissociation of gas hydrates in the thickness of the permafrost, or the introduction of methane from deeper depths. The results of a study published in the journal of Geosciences, point to the threat of thawing permafrost in the Arctic, which could exacerbate global climate change, releasing in the atmosphere large amounts of greenhouse gases.

Permafrost in the Arctic stores large amount of hydrocarbon gases (especially methane) that may result in the process of thawing. It also signed an organic substance, which, when heat is actively processed microorganisms, and this leads to additional emissions of methane into the atmosphere. These processes are linked in the climate system on the principle of positive feedback: the more the degradation of permafrost, the more greenhouse gases can be extracted from it, and it becomes the reason for the increase in air temperature, which would further enhance the melting of the permafrost.

In the future, such cryogenic processes will play an increasingly important role in climate change and pose a danger to people and structures, because the Arctic regions are actively developing new gas and oil fields. Thereforen scientists are attentive to the emergence of new craters in the permafrost zone and explore their causes.

In 2017 on the Yamal Peninsula in the valley of the river Erkut was discovered gasemissions a crater with a diameter of 17.5 meters. Scientists under the leadership of Evgeny Chuvilin (Evgeny Chuvilin) from the Center of hydrocarbon production Skoltech conducted a field study of the crater, and presented a conceptual model of the process of its occurrence, considering three possible variants of development of events.

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