Sonar Estimation of Methane Bubble Flux from Thawing Subsea Permafrost: A Case Study from the Laptev Sea Shelf / D. V. Chernykh, V. I. Yusupov, A. S. Salomatin [et al.]

Уровень набора: GeosciencesАльтернативный автор-лицо: Chernykh, D. V., geologist, engineer at Tomsk Polytechnic University, candidate of technical Sciences, 1988-, Denis Vyacheslavovich;Yusupov, V. I.;Salomatin, A. S.;Kosmach, D., Denis;Shakhova, N. E., geologist, Professor of Tomsk Polytechnic University, doctor of geological-mineralogical Sciences, 1959-, Nataljya Evgenjevna;Gershelis, E. V., Geologist, expert of Tomsk Polytechnic University, 1992-, Elena Vladimirovna;Konstantinov, A. V.;Grinko, A. A., geochemist, research engineer of Tomsk Polytechnic University, candidate of chemical sciences, 1986-, Andrey Alekseevich;Chuvilin, E. M., Evgeny Mikhaylovich;Dudarev, O. V., geologist, researcher of Tomsk Polytechnic University, candidate of geological and mineralogical Sciences, 1955-, Oleg Viktorovich;Koshurnikov, A. V., Andrey Viktorovich;Semiletov, I. P., geographer, Professor of Tomsk Polytechnic University, doctor of geographical Sciences, 1955-, Igor PetrovichКоллективный автор (вторичный): Национальный исследовательский Томский политехнический университет, Инженерная школа природных ресурсов, Отделение геологииЯзык: английский.Резюме или реферат: 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..Примечания о наличии в документе библиографии/указателя: [References: 46 tit.].Тематика: электронный ресурс | труды учёных ТПУ | active acoustic survey | seeps | permafrost | taliks | Laptev sea | East Siberian Arctic Shelf | акустические сканеры | вечная мерзлота | талики | море Лаптевых | Восточно-Сибирский шельф Ресурсы он-лайн:Щелкните здесь для доступа в онлайн | Щелкните здесь для доступа в онлайн
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[References: 46 tit.]

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.

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