Possible causes of methane release from the East Arctic seas shelf
We analyze data on methane concentration in the water and lower atmosphere over the shelf of the East Siberian Arctic Seas, which were obtained using marine, terrestrial, and satellite observations. Our study is targeted towards attribution of the enhanced concentrations of methane above the latitud...
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ftdoajarticles:oai:doaj.org/article:6384890ce20848a78d6b284d7083b11c 2023-05-15T14:53:43+02:00 Possible causes of methane release from the East Arctic seas shelf O. A. Anisimov Yu. G. Zaboikina V. A. Kokorev L. N. Yurganov 2015-03-01T00:00:00Z https://doi.org/10.15356/2076-6734-2014-2-69-81 https://doaj.org/article/6384890ce20848a78d6b284d7083b11c RU rus Nauka https://ice-snow.igras.ru/jour/article/view/42 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.15356/2076-6734-2014-2-69-81 https://doaj.org/article/6384890ce20848a78d6b284d7083b11c Лëд и снег, Vol 54, Iss 2, Pp 69-81 (2015) газовые гидраты субаквальная мерзлота шельф эмиссия метана Science Q article 2015 ftdoajarticles https://doi.org/10.15356/2076-6734-2014-2-69-81 2023-03-19T01:40:13Z We analyze data on methane concentration in the water and lower atmosphere over the shelf of the East Siberian Arctic Seas, which were obtained using marine, terrestrial, and satellite observations. Our study is targeted towards attribution of the enhanced concentrations of methane above the latitudinal-mean, which have been detected at selected locations of these seas. We compare two hypothesis, which attribute it to the effect of modern changes of the sub aquatic permafrost, and to geological factors (tectonics, presence of fault zones and paleo river beds in the study region). Our analysis showed that the methane concentration in sea water are directly related to the distance to the nearest fault zone or paleo river bed, where permafrost is absent and bottom sediments are perforated allowing methane to escape from the deep layers containing gas hydrates. This result indicate that the enhanced emission of methane, which was observed at selected locations of the shelf, is not related to the modern climate change. Earlier study, which was based on mathematical modeling, did not find intensive development of taliks as well as other processes that lead to increased gas permeability of the bottom sediments. Taken together, these results reject the hypothesis of methane catastrophe on the East Siberian Arctic Seas shelf over the foreseeable future. Article in Journal/Newspaper Arctic Climate change permafrost Directory of Open Access Journals: DOAJ Articles Arctic Ice and Snow 126 2 69 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
газовые гидраты субаквальная мерзлота шельф эмиссия метана Science Q |
spellingShingle |
газовые гидраты субаквальная мерзлота шельф эмиссия метана Science Q O. A. Anisimov Yu. G. Zaboikina V. A. Kokorev L. N. Yurganov Possible causes of methane release from the East Arctic seas shelf |
topic_facet |
газовые гидраты субаквальная мерзлота шельф эмиссия метана Science Q |
description |
We analyze data on methane concentration in the water and lower atmosphere over the shelf of the East Siberian Arctic Seas, which were obtained using marine, terrestrial, and satellite observations. Our study is targeted towards attribution of the enhanced concentrations of methane above the latitudinal-mean, which have been detected at selected locations of these seas. We compare two hypothesis, which attribute it to the effect of modern changes of the sub aquatic permafrost, and to geological factors (tectonics, presence of fault zones and paleo river beds in the study region). Our analysis showed that the methane concentration in sea water are directly related to the distance to the nearest fault zone or paleo river bed, where permafrost is absent and bottom sediments are perforated allowing methane to escape from the deep layers containing gas hydrates. This result indicate that the enhanced emission of methane, which was observed at selected locations of the shelf, is not related to the modern climate change. Earlier study, which was based on mathematical modeling, did not find intensive development of taliks as well as other processes that lead to increased gas permeability of the bottom sediments. Taken together, these results reject the hypothesis of methane catastrophe on the East Siberian Arctic Seas shelf over the foreseeable future. |
format |
Article in Journal/Newspaper |
author |
O. A. Anisimov Yu. G. Zaboikina V. A. Kokorev L. N. Yurganov |
author_facet |
O. A. Anisimov Yu. G. Zaboikina V. A. Kokorev L. N. Yurganov |
author_sort |
O. A. Anisimov |
title |
Possible causes of methane release from the East Arctic seas shelf |
title_short |
Possible causes of methane release from the East Arctic seas shelf |
title_full |
Possible causes of methane release from the East Arctic seas shelf |
title_fullStr |
Possible causes of methane release from the East Arctic seas shelf |
title_full_unstemmed |
Possible causes of methane release from the East Arctic seas shelf |
title_sort |
possible causes of methane release from the east arctic seas shelf |
publisher |
Nauka |
publishDate |
2015 |
url |
https://doi.org/10.15356/2076-6734-2014-2-69-81 https://doaj.org/article/6384890ce20848a78d6b284d7083b11c |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change permafrost |
genre_facet |
Arctic Climate change permafrost |
op_source |
Лëд и снег, Vol 54, Iss 2, Pp 69-81 (2015) |
op_relation |
https://ice-snow.igras.ru/jour/article/view/42 https://doaj.org/toc/2076-6734 https://doaj.org/toc/2412-3765 2076-6734 2412-3765 doi:10.15356/2076-6734-2014-2-69-81 https://doaj.org/article/6384890ce20848a78d6b284d7083b11c |
op_doi |
https://doi.org/10.15356/2076-6734-2014-2-69-81 |
container_title |
Ice and Snow |
container_volume |
126 |
container_issue |
2 |
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69 |
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