Sonar Estimation of Methane Bubble Flux from Thawing Subsea Permafrost: A Case Study from the Laptev Sea Shelf; Geosciences; Vol. 10, iss. 10
| Parent link: | Geosciences Vol. 10, iss. 10.— 2020.— [411, 14 p.] |
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| Συγγραφή απο Οργανισμό/Αρχή: | |
| Άλλοι συγγραφείς: | , , , , , , , , , , , |
| Περίληψη: | Title screen 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. |
| Γλώσσα: | Αγγλικά |
| Έκδοση: |
2020
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| Θέματα: | |
| Διαθέσιμο Online: | http://earchive.tpu.ru/handle/11683/65326 https://doi.org/10.3390/geosciences10100411 |
| Μορφή: | xMaterials Ηλεκτρονική πηγή Κεφάλαιο βιβλίου |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664141 |
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| 200 | 1 | |a Sonar Estimation of Methane Bubble Flux from Thawing Subsea Permafrost: A Case Study from the Laptev Sea Shelf |f D. V. Chernykh, V. I. Yusupov, A. S. Salomatin [et al.] | |
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| 330 | |a 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. | ||
| 461 | |t Geosciences | ||
| 463 | |t Vol. 10, iss. 10 |v [411, 14 p.] |d 2020 | ||
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