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)
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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- Current Faculties > Faculty of Environmental and Life Sciences
- Faculties (pre 2018 reorg) > Faculty of Engineering and the Environment (pre 2018 reorg) > Southampton Marine & Maritime Institute (pre 2018 reorg)
- Current Faculties > Faculty of Engineering and Physical Sciences > School of Engineering > Institute of Sound and Vibration Research
Institute of Sound and Vibration Research - Current Faculties > Faculty of Engineering and Physical Sciences > School of Engineering > Institute of Sound and Vibration Research > Acoustics Group
Institute of Sound and Vibration Research > Acoustics Group
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