The Principles of Complex Geocryological Geophysical Analysis for Studying Permafrost and Gas Hydrates on the Arctic Shelf of Russia

Koshurnikov, Andrey

doi:10.3103/s0145875220040122

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…Russia has large deposits of gas hydrates in Lake Baikal and the Black, Caspian, and Okhotsk Seas. The Yamburg, Bovanenkovo, Urengoy, and Messoyakha gas fields are worth mentioning as well [21]. Thousands of highly qualified specialists in many countries are currently addressing the problems of both natural and artificial gas hydrates.…”

Section: Historical Background Of Gas Hydratesmentioning

confidence: 99%

Key Areas of Gas Hydrates Study: Review

2022

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Gas hydrates are widespread all over the world. They feature high energy density and are a clean energy source of great potential. The paper considers experimental and theoretical studies on gas hydrates in the following key areas: formation and dissociation, extraction and transportation technologies of natural methane hydrates, and ignition, and combustion. We identified a lack of research in more areas and defined prospects of further development of gas hydrates as a promising strategic resource. One of the immediate problems is that there are no research findings for the effect of sediments and their matrices on hydrate saturation, as well as on gas hydrate formation and dissociation rates. No mathematical models describe the dissociation of gas hydrates under various conditions. There is a lack of research into the renewal and improvement of existing technologies for the easier and cheaper production of gas hydrates and the extraction of natural gas from them. There are no models of gas hydrate ignition taking into account dissociation processes and the self-preservation effect.

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Section: Historical Background Of Gas Hydratesmentioning

confidence: 99%

Key Areas of Gas Hydrates Study: Review

2022

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“…With regard to permafrost monitoring, rapidly growing is the ground-based transient electromagnetic (TEM) technique [53,54]. There is successful experience in combining TEM and frequency sounding data for investigating permafrost and gas hydrates on the Arctic shelf [55]. At the same time, TEM borehole [56] and cross-borehole [57] varieties appear to have significant unrevealed potential.…”

Section: Introductionmentioning

confidence: 99%

Transient Electromagnetic Monitoring of Permafrost: Mathematical Modeling Based on Sumudu Integral Transform and Artificial Neural Networks

Glinskikh,

Nechaev,

Mikhaylov

et al. 2024

Mathematics

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Due to the ongoing global warming on the Earth, permafrost degradation has been extensively taking place, which poses a substantial threat to civil and industrial facilities and infrastructure elements, as well as to the utilization of natural resources in the Arctic and high-latitude regions. In order to prevent the negative consequences of permafrost thawing under the foundations of constructions, various geophysical techniques for monitoring permafrost have been proposed and applied so far: temperature, electrical, seismic and many others. We propose a cross-borehole exploration system for a high localization of target objects in the cryolithozone. A novel mathematical apparatus for three-dimensional modeling of transient electromagnetic signals by the vector finite element method has been developed. The original combination of the latter, the Sumudu integral transform and artificial neural networks makes it possible to examine spatially heterogeneous objects of the cryolithozone with a high contrast of geoelectric parameters, significantly reducing computational costs. We consider numerical simulation results of the transient electromagnetic monitoring of industrial facilities located on permafrost. The formation of a talik has been shown to significantly manifest itself in the measured electromagnetic responses, which enables timely prevention of industrial disasters and environmental catastrophes.

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