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A model for variations of sound speed and attenuation from seabed gas emissions

A model for variations of sound speed and attenuation from seabed gas emissions
A model for variations of sound speed and attenuation from seabed gas emissions
The release of greenhouse gas, such as carbon dioxide (CO2) and methane (CH4) into the atmosphere, is a major source of global warming. As such a large emphasis has been placed on developing methods of measuring the amount of gas escaping from natural seep sites, particularly in the marine environment. Fortunately, gaseous bubbles crossing the seabed interface into the water column are relatively easily detected and quantified by passive acoustics. Here we design an active acoustic model to determine the frequency dependent changes in sound speed and attenuation in the water column due to gaseous CO2. Our approach is to formulate a numerical model simulating the propagation of sound energy at different frequencies through a mixed media incorporating a gas bubble plume with detection on a hydrophone.
1-9
Li, Jianghui
9c589194-00fa-4d42-abaf-53a32789cc5e
White, Paul
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Bull, Jonathan
974037fd-544b-458f-98cc-ce8eca89e3c8
Leighton, Timothy
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Li, Jianghui
9c589194-00fa-4d42-abaf-53a32789cc5e
White, Paul
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Bull, Jonathan
974037fd-544b-458f-98cc-ce8eca89e3c8
Leighton, Timothy
3e5262ce-1d7d-42eb-b013-fcc5c286bbae

Li, Jianghui, White, Paul, Bull, Jonathan and Leighton, Timothy (2019) A model for variations of sound speed and attenuation from seabed gas emissions. OCEANS 2019 Seattle, Seattle, United States. 27 - 31 Oct 2019. pp. 1-9 . (In Press)

Record type: Conference or Workshop Item (Paper)

Abstract

The release of greenhouse gas, such as carbon dioxide (CO2) and methane (CH4) into the atmosphere, is a major source of global warming. As such a large emphasis has been placed on developing methods of measuring the amount of gas escaping from natural seep sites, particularly in the marine environment. Fortunately, gaseous bubbles crossing the seabed interface into the water column are relatively easily detected and quantified by passive acoustics. Here we design an active acoustic model to determine the frequency dependent changes in sound speed and attenuation in the water column due to gaseous CO2. Our approach is to formulate a numerical model simulating the propagation of sound energy at different frequencies through a mixed media incorporating a gas bubble plume with detection on a hydrophone.

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More information

Accepted/In Press date: 15 July 2019
Venue - Dates: OCEANS 2019 Seattle, Seattle, United States, 2019-10-27 - 2019-10-31

Identifiers

Local EPrints ID: 432562
URI: https://eprints.soton.ac.uk/id/eprint/432562
PURE UUID: 994e7e03-c327-4616-b87b-6b9536184053
ORCID for Jianghui Li: ORCID iD orcid.org/0000-0002-2956-5940
ORCID for Paul White: ORCID iD orcid.org/0000-0002-4787-8713
ORCID for Timothy Leighton: ORCID iD orcid.org/0000-0002-1649-8750

Catalogue record

Date deposited: 18 Jul 2019 16:30
Last modified: 17 Sep 2019 01:09

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