Methane in Gas Shows from Boreholes in Epigenetic Permafrost of Siberian Arctic
The gas shows in the permafrost zone represent a hazard for exploration, form the surface features, and are improperly estimated in the global methane budget. They contain methane of either surficial or deep-Earth origin accumulated earlier in the form of gas or gas hydrates in lithological traps in...
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ftdoajarticles:oai:doaj.org/article:9696010f20f94bbdb9a8f4240859ac38 2023-05-15T15:09:16+02:00 Methane in Gas Shows from Boreholes in Epigenetic Permafrost of Siberian Arctic Gleb Kraev Elizaveta Rivkina Tatiana Vishnivetskaya Andrei Belonosov Jacobus van Huissteden Alexander Kholodov Alexander Smirnov Anton Kudryavtsev Kanayim Teshebaeva Dmitrii Zamolodchikov 2019-01-01T00:00:00Z https://doi.org/10.3390/geosciences9020067 https://doaj.org/article/9696010f20f94bbdb9a8f4240859ac38 EN eng MDPI AG https://www.mdpi.com/2076-3263/9/2/67 https://doaj.org/toc/2076-3263 2076-3263 doi:10.3390/geosciences9020067 https://doaj.org/article/9696010f20f94bbdb9a8f4240859ac38 Geosciences, Vol 9, Iss 2, p 67 (2019) fluxes of CH 4 epigenetic cryogenesis cryogenic transport permeability of permafrost methane accumulations methane-hydrates terrestrial seeps pingo drilling Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.3390/geosciences9020067 2022-12-31T07:04:38Z The gas shows in the permafrost zone represent a hazard for exploration, form the surface features, and are improperly estimated in the global methane budget. They contain methane of either surficial or deep-Earth origin accumulated earlier in the form of gas or gas hydrates in lithological traps in permafrost. From these traps, it rises through conduits, which have tectonic origin or are associated with permafrost degradation. We report methane fluxes from 20-m to 30-m deep boreholes, which are the artificial conduits for gas from permafrost in Siberia. The dynamics of degassing the traps was studied using static chambers, and compared to the concentration of methane in permafrost as analyzed by the headspace method and gas chromatography. More than 53 g of CH 4 could be released to the atmosphere at rates exceeding 9 g of CH 4 m −2 s −1 from a trap in epigenetic permafrost disconnected from traditional geological sources over a period from a few hours to several days. The amount of methane released from a borehole exceeded the amount of the gas that was enclosed in large volumes of permafrost within a diameter up to 5 meters around the borehole. Such gas shows could be by mistake assumed as permanent gas seeps, which leads to the overestimation of the role of permafrost in global warming. Article in Journal/Newspaper Arctic Global warming permafrost Siberia Directory of Open Access Journals: DOAJ Articles Arctic Geosciences 9 2 67 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
fluxes of CH 4 epigenetic cryogenesis cryogenic transport permeability of permafrost methane accumulations methane-hydrates terrestrial seeps pingo drilling Geology QE1-996.5 |
spellingShingle |
fluxes of CH 4 epigenetic cryogenesis cryogenic transport permeability of permafrost methane accumulations methane-hydrates terrestrial seeps pingo drilling Geology QE1-996.5 Gleb Kraev Elizaveta Rivkina Tatiana Vishnivetskaya Andrei Belonosov Jacobus van Huissteden Alexander Kholodov Alexander Smirnov Anton Kudryavtsev Kanayim Teshebaeva Dmitrii Zamolodchikov Methane in Gas Shows from Boreholes in Epigenetic Permafrost of Siberian Arctic |
topic_facet |
fluxes of CH 4 epigenetic cryogenesis cryogenic transport permeability of permafrost methane accumulations methane-hydrates terrestrial seeps pingo drilling Geology QE1-996.5 |
description |
The gas shows in the permafrost zone represent a hazard for exploration, form the surface features, and are improperly estimated in the global methane budget. They contain methane of either surficial or deep-Earth origin accumulated earlier in the form of gas or gas hydrates in lithological traps in permafrost. From these traps, it rises through conduits, which have tectonic origin or are associated with permafrost degradation. We report methane fluxes from 20-m to 30-m deep boreholes, which are the artificial conduits for gas from permafrost in Siberia. The dynamics of degassing the traps was studied using static chambers, and compared to the concentration of methane in permafrost as analyzed by the headspace method and gas chromatography. More than 53 g of CH 4 could be released to the atmosphere at rates exceeding 9 g of CH 4 m −2 s −1 from a trap in epigenetic permafrost disconnected from traditional geological sources over a period from a few hours to several days. The amount of methane released from a borehole exceeded the amount of the gas that was enclosed in large volumes of permafrost within a diameter up to 5 meters around the borehole. Such gas shows could be by mistake assumed as permanent gas seeps, which leads to the overestimation of the role of permafrost in global warming. |
format |
Article in Journal/Newspaper |
author |
Gleb Kraev Elizaveta Rivkina Tatiana Vishnivetskaya Andrei Belonosov Jacobus van Huissteden Alexander Kholodov Alexander Smirnov Anton Kudryavtsev Kanayim Teshebaeva Dmitrii Zamolodchikov |
author_facet |
Gleb Kraev Elizaveta Rivkina Tatiana Vishnivetskaya Andrei Belonosov Jacobus van Huissteden Alexander Kholodov Alexander Smirnov Anton Kudryavtsev Kanayim Teshebaeva Dmitrii Zamolodchikov |
author_sort |
Gleb Kraev |
title |
Methane in Gas Shows from Boreholes in Epigenetic Permafrost of Siberian Arctic |
title_short |
Methane in Gas Shows from Boreholes in Epigenetic Permafrost of Siberian Arctic |
title_full |
Methane in Gas Shows from Boreholes in Epigenetic Permafrost of Siberian Arctic |
title_fullStr |
Methane in Gas Shows from Boreholes in Epigenetic Permafrost of Siberian Arctic |
title_full_unstemmed |
Methane in Gas Shows from Boreholes in Epigenetic Permafrost of Siberian Arctic |
title_sort |
methane in gas shows from boreholes in epigenetic permafrost of siberian arctic |
publisher |
MDPI AG |
publishDate |
2019 |
url |
https://doi.org/10.3390/geosciences9020067 https://doaj.org/article/9696010f20f94bbdb9a8f4240859ac38 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming permafrost Siberia |
genre_facet |
Arctic Global warming permafrost Siberia |
op_source |
Geosciences, Vol 9, Iss 2, p 67 (2019) |
op_relation |
https://www.mdpi.com/2076-3263/9/2/67 https://doaj.org/toc/2076-3263 2076-3263 doi:10.3390/geosciences9020067 https://doaj.org/article/9696010f20f94bbdb9a8f4240859ac38 |
op_doi |
https://doi.org/10.3390/geosciences9020067 |
container_title |
Geosciences |
container_volume |
9 |
container_issue |
2 |
container_start_page |
67 |
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1766340483925147648 |