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Home Archive of journals Volume 14, No. 2, 2024 Explosive degassing of the Earth on the Yamal Peninsula and the adjacent Kara Sea

EXPLOSIVE DEGASSING OF THE EARTH ON THE YAMAL PENINSULA AND THE ADJACENT KARA SEA

JOURNAL: Volume 14, No. 2, 2024, p. 177-191

HEADING: Research activities in the Arctic

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

ORGANIZATIONS: Oil and Gas Research Institute of RAS

DOI: 10.25283/2223-4594-2024-2-177-191

UDC: 553.981.2, 504.4

The article was received on: 18.02.2024

Keywords: gas hydrates, remote sensing of the Earth, Kara sea, crater, pockmarks, Yamal peninsula, gas seeps, explosive degassing of the Earth, pingo-like features (PLF)

Bibliographic description: Bogoyavlensky, V.I., Bogoyavlensky, I.V., Nikonov, R.A. Explosive degassing of the Earth on the Yamal Peninsula and the adjacent Kara Sea. Arktika: ekologiya i ekonomika. [Arctic: Ecology and Economy], 2024, vol. 14, no. 2, pp. 177-191. DOI: 10.25283/2223-4594-2024-2-177-191. (In Russian).


Abstract:

Remote sensing data from space and using UAVs make it possible to solve a wide range of tasks related to the study of Earth degassing processes in the Arctic. For the first time, via comprehensive aerospace research on the Yamal Peninsula, we have discovered 4992 zones of gas blowouts (explosions) in the form of craters (pockmarks) at the bottom of 3551 thermokarst lakes and 16 rivers. In addition, we have identified another 669 zones of explosive degassing in the coastal zones of the Kara Sea, mainly in gulfs, estuaries and bays. Taking into account the Yugorsky Peninsula and Bely Island, we have detected 6022 explosive degassing zones in the studying region, including 905 ones offshore. We have proved previously made conclusions that the Neytinsko-Seyakhinsky and Sabetta districts are the most gas-explosive. It is substantiated that possible intense natural degassing of the Earth, especially occurring in the process of degradation of subaquatic permafrost and dissociation of gas hydrates, can radically change the elastic-strength properties of bottom soil, while its saturation with gas can disrupt conditions for the construction of various objects, including underwater gas pipelines. Widespread gas blowouts in the north of Western Siberia with the formation of craters on land and offshore can lead to emergencies and even disasters at oil and gas industrial facilities and to fires in the tundra.


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