Sonar Estimation of Methane Bubble Flux from Thawing Subsea Permafrost: A Case Study from the Laptev Sea Shelf
Seeps found offshore in the East Siberian Arctic Shelf may mark zones of degrading subsea permafrost and related destabilization of gas hydrates. Sonar surveys provide an effective tool for mapping seabed methane fluxes and monitoring subsea Arctic permafrost seepage. The paper presents an overview...
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ftmdpi:oai:mdpi.com:/2076-3263/10/10/411/ 2023-08-20T04:03:47+02:00 Sonar Estimation of Methane Bubble Flux from Thawing Subsea Permafrost: A Case Study from the Laptev Sea Shelf Denis Chernykh Vladimir Yusupov Aleksandr Salomatin Denis Kosmach Natalia Shakhova Elena Gershelis Anton Konstantinov Andrey Grinko Evgeny Chuvilin Oleg Dudarev Andrey Koshurnikov Igor Semiletov agris 2020-10-14 application/pdf https://doi.org/10.3390/geosciences10100411 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/geosciences10100411 https://creativecommons.org/licenses/by/4.0/ Geosciences; Volume 10; Issue 10; Pages: 411 active acoustic survey seeps permafrost taliks Laptev sea East Siberian Arctic Shelf Text 2020 ftmdpi https://doi.org/10.3390/geosciences10100411 2023-08-01T00:16:20Z Seeps found offshore in the East Siberian Arctic Shelf may mark zones of degrading subsea permafrost and related destabilization of gas hydrates. Sonar surveys provide an effective tool for mapping seabed methane fluxes and monitoring subsea Arctic permafrost seepage. The paper presents an overview of existing approaches to sonar estimation of methane bubble flux from the sea floor to the water column and a new method for quantifying CH4 ebullition. In the suggested method, the flux of methane bubbles is estimated from its response to insonification using the backscattering cross section. The method has demonstrated its efficiency in the case study of single- and multi-beam acoustic surveys of a large seep field on the Laptev Sea shelf. Text Arctic laptev Laptev Sea permafrost MDPI Open Access Publishing Arctic Laptev Sea Geosciences 10 10 411 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
active acoustic survey seeps permafrost taliks Laptev sea East Siberian Arctic Shelf |
spellingShingle |
active acoustic survey seeps permafrost taliks Laptev sea East Siberian Arctic Shelf Denis Chernykh Vladimir Yusupov Aleksandr Salomatin Denis Kosmach Natalia Shakhova Elena Gershelis Anton Konstantinov Andrey Grinko Evgeny Chuvilin Oleg Dudarev Andrey Koshurnikov Igor Semiletov Sonar Estimation of Methane Bubble Flux from Thawing Subsea Permafrost: A Case Study from the Laptev Sea Shelf |
topic_facet |
active acoustic survey seeps permafrost taliks Laptev sea East Siberian Arctic Shelf |
description |
Seeps found offshore in the East Siberian Arctic Shelf may mark zones of degrading subsea permafrost and related destabilization of gas hydrates. Sonar surveys provide an effective tool for mapping seabed methane fluxes and monitoring subsea Arctic permafrost seepage. The paper presents an overview of existing approaches to sonar estimation of methane bubble flux from the sea floor to the water column and a new method for quantifying CH4 ebullition. In the suggested method, the flux of methane bubbles is estimated from its response to insonification using the backscattering cross section. The method has demonstrated its efficiency in the case study of single- and multi-beam acoustic surveys of a large seep field on the Laptev Sea shelf. |
format |
Text |
author |
Denis Chernykh Vladimir Yusupov Aleksandr Salomatin Denis Kosmach Natalia Shakhova Elena Gershelis Anton Konstantinov Andrey Grinko Evgeny Chuvilin Oleg Dudarev Andrey Koshurnikov Igor Semiletov |
author_facet |
Denis Chernykh Vladimir Yusupov Aleksandr Salomatin Denis Kosmach Natalia Shakhova Elena Gershelis Anton Konstantinov Andrey Grinko Evgeny Chuvilin Oleg Dudarev Andrey Koshurnikov Igor Semiletov |
author_sort |
Denis Chernykh |
title |
Sonar Estimation of Methane Bubble Flux from Thawing Subsea Permafrost: A Case Study from the Laptev Sea Shelf |
title_short |
Sonar Estimation of Methane Bubble Flux from Thawing Subsea Permafrost: A Case Study from the Laptev Sea Shelf |
title_full |
Sonar Estimation of Methane Bubble Flux from Thawing Subsea Permafrost: A Case Study from the Laptev Sea Shelf |
title_fullStr |
Sonar Estimation of Methane Bubble Flux from Thawing Subsea Permafrost: A Case Study from the Laptev Sea Shelf |
title_full_unstemmed |
Sonar Estimation of Methane Bubble Flux from Thawing Subsea Permafrost: A Case Study from the Laptev Sea Shelf |
title_sort |
sonar estimation of methane bubble flux from thawing subsea permafrost: a case study from the laptev sea shelf |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/geosciences10100411 |
op_coverage |
agris |
geographic |
Arctic Laptev Sea |
geographic_facet |
Arctic Laptev Sea |
genre |
Arctic laptev Laptev Sea permafrost |
genre_facet |
Arctic laptev Laptev Sea permafrost |
op_source |
Geosciences; Volume 10; Issue 10; Pages: 411 |
op_relation |
https://dx.doi.org/10.3390/geosciences10100411 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/geosciences10100411 |
container_title |
Geosciences |
container_volume |
10 |
container_issue |
10 |
container_start_page |
411 |
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1774714222584791040 |