Gas‐emission craters of the Yamal and Gydan peninsulas: A proposed mechanism for lake genesis and development of permafrost landscapes
This paper describes two gas‐emission craters (GECs) in permafrost regions of the Yamal and Gydan peninsulas. We show that in three consecutive years after GEC formation (2014–2017), both morphometry and hydrochemistry of the inner crater lakes can become indistinguishable from other lakes. Craters...
Published in: | Permafrost and Periglacial Processes |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://doi.org/10.1002/ppp.2014 |
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ftrepec:oai:RePEc:wly:perpro:v:30:y:2019:i:3:p:146-162 2023-05-15T17:57:34+02:00 Gas‐emission craters of the Yamal and Gydan peninsulas: A proposed mechanism for lake genesis and development of permafrost landscapes Yury A. Dvornikov Marina O. Leibman Artem V. Khomutov Alexander I. Kizyakov Petr Semenov Ingeborg Bussmann Evgeny M. Babkin Birgit Heim Alexey Portnov Elena A. Babkina Irina D. Streletskaya Antonina A. Chetverova Anna Kozachek Hanno Meyer https://doi.org/10.1002/ppp.2014 unknown https://doi.org/10.1002/ppp.2014 article ftrepec https://doi.org/10.1002/ppp.2014 2020-12-04T13:31:25Z This paper describes two gas‐emission craters (GECs) in permafrost regions of the Yamal and Gydan peninsulas. We show that in three consecutive years after GEC formation (2014–2017), both morphometry and hydrochemistry of the inner crater lakes can become indistinguishable from other lakes. Craters GEC‐1 and AntGEC, with initial depths of 50–70 and 15–19 m respectively, have transformed into lakes 3–5 m deep. Crater‐like depressions were mapped in the bottom of 13 out of 22 Yamal lakes. However, we found no evidence that these depressions could have been formed as a result of gas emission. Dissolved methane (dCH4) concentration measured in the water collected from these depressions was at a background level (45 ppm on average). Yet, the concentration of dCH4 from the near‐bottom layer of lake GEC‐1 was significantly higher (824–968 ppm) during initial stages. We established that hydrochemical parameters (dissolved organic carbon, major ions, isotopes) measured in GEC lakes approached values measured in other lakes over time. Therefore, these parameters could not be used to search for Western Siberian lakes that potentially resulted from gas emission. Temperature profiles measured in GEC lakes show that the water column temperatures in GEC‐1 are lower than in Yamal lakes and in AntGEC – close to values of Gydan lakes. Given the initial GEC depth > 50 m, we suggest that at least in GEC‐1 possible re‐freezing of sediments from below might take place. However, with the present data we cannot establish the modern thickness of the closed talik under newly formed GEC lakes. Article in Journal/Newspaper permafrost RePEc (Research Papers in Economics) Inner Crater ENVELOPE(167.167,167.167,-77.533,-77.533) Talik ENVELOPE(146.601,146.601,59.667,59.667) Permafrost and Periglacial Processes |
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Open Polar |
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RePEc (Research Papers in Economics) |
op_collection_id |
ftrepec |
language |
unknown |
description |
This paper describes two gas‐emission craters (GECs) in permafrost regions of the Yamal and Gydan peninsulas. We show that in three consecutive years after GEC formation (2014–2017), both morphometry and hydrochemistry of the inner crater lakes can become indistinguishable from other lakes. Craters GEC‐1 and AntGEC, with initial depths of 50–70 and 15–19 m respectively, have transformed into lakes 3–5 m deep. Crater‐like depressions were mapped in the bottom of 13 out of 22 Yamal lakes. However, we found no evidence that these depressions could have been formed as a result of gas emission. Dissolved methane (dCH4) concentration measured in the water collected from these depressions was at a background level (45 ppm on average). Yet, the concentration of dCH4 from the near‐bottom layer of lake GEC‐1 was significantly higher (824–968 ppm) during initial stages. We established that hydrochemical parameters (dissolved organic carbon, major ions, isotopes) measured in GEC lakes approached values measured in other lakes over time. Therefore, these parameters could not be used to search for Western Siberian lakes that potentially resulted from gas emission. Temperature profiles measured in GEC lakes show that the water column temperatures in GEC‐1 are lower than in Yamal lakes and in AntGEC – close to values of Gydan lakes. Given the initial GEC depth > 50 m, we suggest that at least in GEC‐1 possible re‐freezing of sediments from below might take place. However, with the present data we cannot establish the modern thickness of the closed talik under newly formed GEC lakes. |
format |
Article in Journal/Newspaper |
author |
Yury A. Dvornikov Marina O. Leibman Artem V. Khomutov Alexander I. Kizyakov Petr Semenov Ingeborg Bussmann Evgeny M. Babkin Birgit Heim Alexey Portnov Elena A. Babkina Irina D. Streletskaya Antonina A. Chetverova Anna Kozachek Hanno Meyer |
spellingShingle |
Yury A. Dvornikov Marina O. Leibman Artem V. Khomutov Alexander I. Kizyakov Petr Semenov Ingeborg Bussmann Evgeny M. Babkin Birgit Heim Alexey Portnov Elena A. Babkina Irina D. Streletskaya Antonina A. Chetverova Anna Kozachek Hanno Meyer Gas‐emission craters of the Yamal and Gydan peninsulas: A proposed mechanism for lake genesis and development of permafrost landscapes |
author_facet |
Yury A. Dvornikov Marina O. Leibman Artem V. Khomutov Alexander I. Kizyakov Petr Semenov Ingeborg Bussmann Evgeny M. Babkin Birgit Heim Alexey Portnov Elena A. Babkina Irina D. Streletskaya Antonina A. Chetverova Anna Kozachek Hanno Meyer |
author_sort |
Yury A. Dvornikov |
title |
Gas‐emission craters of the Yamal and Gydan peninsulas: A proposed mechanism for lake genesis and development of permafrost landscapes |
title_short |
Gas‐emission craters of the Yamal and Gydan peninsulas: A proposed mechanism for lake genesis and development of permafrost landscapes |
title_full |
Gas‐emission craters of the Yamal and Gydan peninsulas: A proposed mechanism for lake genesis and development of permafrost landscapes |
title_fullStr |
Gas‐emission craters of the Yamal and Gydan peninsulas: A proposed mechanism for lake genesis and development of permafrost landscapes |
title_full_unstemmed |
Gas‐emission craters of the Yamal and Gydan peninsulas: A proposed mechanism for lake genesis and development of permafrost landscapes |
title_sort |
gas‐emission craters of the yamal and gydan peninsulas: a proposed mechanism for lake genesis and development of permafrost landscapes |
url |
https://doi.org/10.1002/ppp.2014 |
long_lat |
ENVELOPE(167.167,167.167,-77.533,-77.533) ENVELOPE(146.601,146.601,59.667,59.667) |
geographic |
Inner Crater Talik |
geographic_facet |
Inner Crater Talik |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
https://doi.org/10.1002/ppp.2014 |
op_doi |
https://doi.org/10.1002/ppp.2014 |
container_title |
Permafrost and Periglacial Processes |
_version_ |
1766166030144503808 |