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Home Archive of journals Volume 13, No. 3, 2023 New data on intensive Earth degassing in the Arctic in the north of Western Siberia: thermokarst lakes with gas blowout craters and mud volcanoes


JOURNAL: Volume 13, No. 3, 2023, p. 353-368

HEADING: Research activities in the Arctic

AUTHORS: Bogoyavlensky, V.I., Nikonov, R.A., Bogoyavlensky, I.V.

ORGANIZATIONS: Oil and Gas Research Institute of RAS

DOI: 10.25283/2223-4594-2023-3-353-368

UDC: 551.311.8, 504.4, 553.981

The article was received on: 25.05.2023

Keywords: gas hydrates, remote sensing of the Earth, Yamal peninsula, thermokarst lakes, mud volcano, Western Siberia, Earth degassing, taliks, gas blowouts and explosions

Bibliographic description: Bogoyavlensky, V.I., Nikonov, R.A., Bogoyavlensky, I.V. New data on intensive Earth degassing in the Arctic in the north of Western Siberia: thermokarst lakes with gas blowout craters and mud volcanoes. Arktika: ekologiya i ekonomika. [Arctic: Ecology and Economy], 2023, vol. 13, no. 3, pp. 353-368. DOI: 10.25283/2223-4594-2023-3-353-368. (In Russian).


In the last decade, in the north of Western Siberia, the authors carried out a large amount of comprehensive research, which made it possible to obtain fundamentally new information about the gas-dynamic mechanisms of dangerous processes in the Arctic permafrost. According to remote sensing data, at the bottom of thermokarst lakes, rivers and coastal zones of the Kara Sea, more than 4.5 thousand zones of powerful gas blowouts with the formation of craters (pockmark) were found. There are reasons to believe that powerful gas emissions mainly come from shallow deposits with ultrahigh (superlithostatic) pressures. For the first time, large mud volcanic uplifts with pronounced craters have been found at the bottom of the Arctic thermokarst lakes. Based on the monitoring of the ice situation and the water environment on the basis of retrospective satellite images on lakes Otkrytie, Labvarto and Yambuto, the presence of periodic emissions of formation fluids, including gas, is shown. Based on the combination of a number of features, the discovered objects can be classified as active mud volcanoes with a high level of probability. The results of the studies allow us to state that mud volcanism is widespread in the Circum-Arctic megaregion.

Finance info: The research was carried out according to the state assignment of the Oil and Gas Research Institute, Russian Academy of Sciences on the topic Improving the efficiency and environmental safety of the oil and gas resources development in the Arctic and Subarctic zones of the Earth in a changing climate (No. 122022800264-9)


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DOI 10.25283/2223-4594