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Open AccessArticle

Complex of Geophysical Studies of the Seyakha Catastrophic Gas Blowout Crater on the Yamal Peninsula, Russian Arctic

1
Oil and Gas Research Institute of the Russian Academy of Sciences (OGRI RAS), 3, Gubkina St., 119333 Moscow, Russia
2
Department of Geoecology, Gubkin Russian State University of Oil and Gas (National Research University), 65, Leninsky Prospekt, 119991 Moscow, Russia
*
Author to whom correspondence should be addressed.
Geosciences 2020, 10(6), 215; https://doi.org/10.3390/geosciences10060215
Received: 8 April 2020 / Revised: 29 May 2020 / Accepted: 31 May 2020 / Published: 3 June 2020
(This article belongs to the Special Issue Gas Emissions and Crater Formation in Arctic Permafrost)
This article describes the main results of two Arctic expeditions in 2017–2018 to study the Seyakha Crater in the north of Western Siberia, Yamal Peninsula. It was formed on a place of a pingo-like feature (PLF) by huge blowout, self-ignition, and explosion of gas on 28 June 2017. In 2018, for the first time, the integration of geophysical studies on the Yamal Peninsula revealed in detail an Arctic gas-blowout crater within a river channel and adjacent land with permafrost. On the basis of unmanned aerial vehicle photography, echo sounding, and ground penetrating radar survey data processing, a 3D digital elevation model (DEM) of the crater and the structure of near-surface deposits was created. A previously unknown uplift inside the permafrost layers, probably connected with the processes of gas chamber formation, was revealed. A long period of continuous gas emission (mainly, biogenic methane) from the Seyakha C11 Crater (2017–2019) and other existing data show evidence for a gas-dynamic mechanism of the PLF growth and a volcanic type of eruption. View Full-Text
Keywords: Arctic; Yamal Peninsula; gas blowout; gas explosion; crater; permafrost; pingo; pingo-like feature (PLF); unmanned aerial vehicle (UAV); ground penetrating radar (GPR) Arctic; Yamal Peninsula; gas blowout; gas explosion; crater; permafrost; pingo; pingo-like feature (PLF); unmanned aerial vehicle (UAV); ground penetrating radar (GPR)
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Bogoyavlensky, V.; Bogoyavlensky, I.; Nikonov, R.; Kishankov, A. Complex of Geophysical Studies of the Seyakha Catastrophic Gas Blowout Crater on the Yamal Peninsula, Russian Arctic. Geosciences 2020, 10, 215.

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