Sonar gas flux estimation by bubble insonification: application to methane bubble flux from seep areas in the outer Laptev Sea
Sonar surveys provide an effective mechanism for mapping seabed methane flux emissions, with Arctic submerged permafrost seepage having great potential to significantly affect climate. We created in situ engineered bubble plumes from 40 m depth with fluxes spanning 0.019 to 1.1 L s−1 to derive the i...
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Language: | English |
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2017
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fttomskpuniv:oai:earchive.tpu.ru:11683/65329 2023-05-15T15:07:55+02:00 Sonar gas flux estimation by bubble insonification: application to methane bubble flux from seep areas in the outer Laptev Sea Leifer, Ira Chernykh, Denis Shakhova, Nataljya Evgenjevna Semiletov, Igor Petrovich 2017 application/pdf http://earchive.tpu.ru/handle/11683/65329 https://doi.org/10.5194/tc-11-1333-2017 en eng Copernicus Group The Cryosphere. 2017. Vol. 11, iss. 3 Sonar gas flux estimation by bubble insonification: application to methane bubble flux from seep areas in the outer Laptev Sea / I. S. Leifer [et al.] // The Cryosphere. — 2017. — Vol. 11, iss. 3. — [P. 1333-1350]. http://earchive.tpu.ru/handle/11683/65329 doi:10.5194/tc-11-1333-2017 info:eu-repo/semantics/openAccess Attribution-NonCommercial 4.0 International https://creativecommons.org/licenses/by-nc/4.0/ CC-BY-NC The Cryosphere море Лаптевых озонирование пузырьки картирование вечная мерзлота Арктика метан морское дно исследование Article info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2017 fttomskpuniv https://doi.org/10.5194/tc-11-1333-2017 2021-05-18T16:28:21Z Sonar surveys provide an effective mechanism for mapping seabed methane flux emissions, with Arctic submerged permafrost seepage having great potential to significantly affect climate. We created in situ engineered bubble plumes from 40 m depth with fluxes spanning 0.019 to 1.1 L s−1 to derive the in situ calibration curve (Q([sigma])). These nonlinear curves related flux (Q) to sonar return ([sigma]) for a multibeam echosounder (MBES) and a single-beam echosounder (SBES) for a range of depths. The analysis demonstrated significant multiple bubble acoustic scattering - precluding the use of a theoretical approach to derive Q([sigma]) from the product of the bubble [sigma] (r) and the bubble size distribution where r is bubble radius. The bubble plume σ occurrence probability distribution function ([PSI]([sigma])) with respect to Q found [PSI] ([sigma]) for weak σ well described by a power law that likely correlated with small-bubble dispersion and was strongly depth dependent. [PSI] ([sigma]) for strong σ was largely depth independent, consistent with bubble plume behavior where large bubbles in a plume remain in a focused core. [PSI] ([sigma]) was bimodal for all but the weakest plumes. Article in Journal/Newspaper Arctic laptev Laptev Sea permafrost The Cryosphere Арктика вечная мерзлота Tomsk Polytechnic University (TPU): Electronic Archive Arctic Laptev Sea Psi ENVELOPE(-63.000,-63.000,-64.300,-64.300) The Cryosphere 11 3 1333 1350 |
institution |
Open Polar |
collection |
Tomsk Polytechnic University (TPU): Electronic Archive |
op_collection_id |
fttomskpuniv |
language |
English |
topic |
море Лаптевых озонирование пузырьки картирование вечная мерзлота Арктика метан морское дно исследование |
spellingShingle |
море Лаптевых озонирование пузырьки картирование вечная мерзлота Арктика метан морское дно исследование Leifer, Ira Chernykh, Denis Shakhova, Nataljya Evgenjevna Semiletov, Igor Petrovich Sonar gas flux estimation by bubble insonification: application to methane bubble flux from seep areas in the outer Laptev Sea |
topic_facet |
море Лаптевых озонирование пузырьки картирование вечная мерзлота Арктика метан морское дно исследование |
description |
Sonar surveys provide an effective mechanism for mapping seabed methane flux emissions, with Arctic submerged permafrost seepage having great potential to significantly affect climate. We created in situ engineered bubble plumes from 40 m depth with fluxes spanning 0.019 to 1.1 L s−1 to derive the in situ calibration curve (Q([sigma])). These nonlinear curves related flux (Q) to sonar return ([sigma]) for a multibeam echosounder (MBES) and a single-beam echosounder (SBES) for a range of depths. The analysis demonstrated significant multiple bubble acoustic scattering - precluding the use of a theoretical approach to derive Q([sigma]) from the product of the bubble [sigma] (r) and the bubble size distribution where r is bubble radius. The bubble plume σ occurrence probability distribution function ([PSI]([sigma])) with respect to Q found [PSI] ([sigma]) for weak σ well described by a power law that likely correlated with small-bubble dispersion and was strongly depth dependent. [PSI] ([sigma]) for strong σ was largely depth independent, consistent with bubble plume behavior where large bubbles in a plume remain in a focused core. [PSI] ([sigma]) was bimodal for all but the weakest plumes. |
format |
Article in Journal/Newspaper |
author |
Leifer, Ira Chernykh, Denis Shakhova, Nataljya Evgenjevna Semiletov, Igor Petrovich |
author_facet |
Leifer, Ira Chernykh, Denis Shakhova, Nataljya Evgenjevna Semiletov, Igor Petrovich |
author_sort |
Leifer, Ira |
title |
Sonar gas flux estimation by bubble insonification: application to methane bubble flux from seep areas in the outer Laptev Sea |
title_short |
Sonar gas flux estimation by bubble insonification: application to methane bubble flux from seep areas in the outer Laptev Sea |
title_full |
Sonar gas flux estimation by bubble insonification: application to methane bubble flux from seep areas in the outer Laptev Sea |
title_fullStr |
Sonar gas flux estimation by bubble insonification: application to methane bubble flux from seep areas in the outer Laptev Sea |
title_full_unstemmed |
Sonar gas flux estimation by bubble insonification: application to methane bubble flux from seep areas in the outer Laptev Sea |
title_sort |
sonar gas flux estimation by bubble insonification: application to methane bubble flux from seep areas in the outer laptev sea |
publisher |
Copernicus Group |
publishDate |
2017 |
url |
http://earchive.tpu.ru/handle/11683/65329 https://doi.org/10.5194/tc-11-1333-2017 |
long_lat |
ENVELOPE(-63.000,-63.000,-64.300,-64.300) |
geographic |
Arctic Laptev Sea Psi |
geographic_facet |
Arctic Laptev Sea Psi |
genre |
Arctic laptev Laptev Sea permafrost The Cryosphere Арктика вечная мерзлота |
genre_facet |
Arctic laptev Laptev Sea permafrost The Cryosphere Арктика вечная мерзлота |
op_source |
The Cryosphere |
op_relation |
The Cryosphere. 2017. Vol. 11, iss. 3 Sonar gas flux estimation by bubble insonification: application to methane bubble flux from seep areas in the outer Laptev Sea / I. S. Leifer [et al.] // The Cryosphere. — 2017. — Vol. 11, iss. 3. — [P. 1333-1350]. http://earchive.tpu.ru/handle/11683/65329 doi:10.5194/tc-11-1333-2017 |
op_rights |
info:eu-repo/semantics/openAccess Attribution-NonCommercial 4.0 International https://creativecommons.org/licenses/by-nc/4.0/ |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.5194/tc-11-1333-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
3 |
container_start_page |
1333 |
op_container_end_page |
1350 |
_version_ |
1766339343724576768 |