A new methodology for quantifying bubble flow rates in deep water using splitbeam echosounders: Examples from the Arctic offshore NW‐ Svalbard
Abstract Quantifying marine methane fluxes of free gas (bubbles) from the seafloor into the water column is of importance for climate related studies, for example, in the Arctic, reliable methodologies are also of interest for studying man‐made gas and oil leakage systems at hydrocarbon production s...
Published in: | Limnology and Oceanography: Methods |
---|---|
Main Authors: | , , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2015
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/lom3.10024 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flom3.10024 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lom3.10024 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lom3.10024 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lom3.10024 |
id |
crwiley:10.1002/lom3.10024 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/lom3.10024 2024-10-13T14:05:11+00:00 A new methodology for quantifying bubble flow rates in deep water using splitbeam echosounders: Examples from the Arctic offshore NW‐ Svalbard Veloso, M. Greinert, J. Mienert, J. De Batist, M. ERASMUS Mundus program of the EU the “Becas de doctorado en el extranjero Centre of Excellence: Arctic Gas Hydrate, Environment and Climate (CAGE) funded by the Norwegian Research Council 2015 http://dx.doi.org/10.1002/lom3.10024 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flom3.10024 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lom3.10024 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lom3.10024 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lom3.10024 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Limnology and Oceanography: Methods volume 13, issue 6, page 267-287 ISSN 1541-5856 1541-5856 journal-article 2015 crwiley https://doi.org/10.1002/lom3.10024 2024-09-27T04:17:11Z Abstract Quantifying marine methane fluxes of free gas (bubbles) from the seafloor into the water column is of importance for climate related studies, for example, in the Arctic, reliable methodologies are also of interest for studying man‐made gas and oil leakage systems at hydrocarbon production sites. Hydroacoustic surveys with singlebeam and nowadays also multibeam systems have been proven to be a successful approach to detect bubble release from the seabed. A number of publications used singlebeam echosounder data to indirectly quantify free gas fluxes via empirical correlations between gas fluxes observed at the seafloor and the hydroacoustic response. Others utilize the hydroacoustic information in an inverse modeling approach to derive bubble fluxes. Here, we present an advanced methodology using data from splitbeam echosounder systems for analyzing gas release water depth (> 100 m). We introduce a new MATLAB‐based software for processing and interactively editing data and we present how bubble‐size distribution, bubble rising speed and the model used for calculating the backscatter response of single bubbles influence the final gas flow rate calculations. As a result, we highlight the need for further investigations on how large, wobbly bubbles, bubble clouds, and multi‐scattering influence target strength. The results emphasize that detailed studies of bubble‐size distributions and rising speeds need to be performed in parallel to hydroacoustic surveys to achieve realistic mediated methane flow rate and flux quantifications. Article in Journal/Newspaper Arctic Svalbard Wiley Online Library Arctic Svalbard Limnology and Oceanography: Methods 13 6 267 287 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Quantifying marine methane fluxes of free gas (bubbles) from the seafloor into the water column is of importance for climate related studies, for example, in the Arctic, reliable methodologies are also of interest for studying man‐made gas and oil leakage systems at hydrocarbon production sites. Hydroacoustic surveys with singlebeam and nowadays also multibeam systems have been proven to be a successful approach to detect bubble release from the seabed. A number of publications used singlebeam echosounder data to indirectly quantify free gas fluxes via empirical correlations between gas fluxes observed at the seafloor and the hydroacoustic response. Others utilize the hydroacoustic information in an inverse modeling approach to derive bubble fluxes. Here, we present an advanced methodology using data from splitbeam echosounder systems for analyzing gas release water depth (> 100 m). We introduce a new MATLAB‐based software for processing and interactively editing data and we present how bubble‐size distribution, bubble rising speed and the model used for calculating the backscatter response of single bubbles influence the final gas flow rate calculations. As a result, we highlight the need for further investigations on how large, wobbly bubbles, bubble clouds, and multi‐scattering influence target strength. The results emphasize that detailed studies of bubble‐size distributions and rising speeds need to be performed in parallel to hydroacoustic surveys to achieve realistic mediated methane flow rate and flux quantifications. |
author2 |
ERASMUS Mundus program of the EU the “Becas de doctorado en el extranjero Centre of Excellence: Arctic Gas Hydrate, Environment and Climate (CAGE) funded by the Norwegian Research Council |
format |
Article in Journal/Newspaper |
author |
Veloso, M. Greinert, J. Mienert, J. De Batist, M. |
spellingShingle |
Veloso, M. Greinert, J. Mienert, J. De Batist, M. A new methodology for quantifying bubble flow rates in deep water using splitbeam echosounders: Examples from the Arctic offshore NW‐ Svalbard |
author_facet |
Veloso, M. Greinert, J. Mienert, J. De Batist, M. |
author_sort |
Veloso, M. |
title |
A new methodology for quantifying bubble flow rates in deep water using splitbeam echosounders: Examples from the Arctic offshore NW‐ Svalbard |
title_short |
A new methodology for quantifying bubble flow rates in deep water using splitbeam echosounders: Examples from the Arctic offshore NW‐ Svalbard |
title_full |
A new methodology for quantifying bubble flow rates in deep water using splitbeam echosounders: Examples from the Arctic offshore NW‐ Svalbard |
title_fullStr |
A new methodology for quantifying bubble flow rates in deep water using splitbeam echosounders: Examples from the Arctic offshore NW‐ Svalbard |
title_full_unstemmed |
A new methodology for quantifying bubble flow rates in deep water using splitbeam echosounders: Examples from the Arctic offshore NW‐ Svalbard |
title_sort |
new methodology for quantifying bubble flow rates in deep water using splitbeam echosounders: examples from the arctic offshore nw‐ svalbard |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1002/lom3.10024 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flom3.10024 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lom3.10024 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lom3.10024 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lom3.10024 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Svalbard |
genre_facet |
Arctic Svalbard |
op_source |
Limnology and Oceanography: Methods volume 13, issue 6, page 267-287 ISSN 1541-5856 1541-5856 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1002/lom3.10024 |
container_title |
Limnology and Oceanography: Methods |
container_volume |
13 |
container_issue |
6 |
container_start_page |
267 |
op_container_end_page |
287 |
_version_ |
1812811252060127232 |