Flores Martin, Nicholas, Leighton, Timothy, White, Paul and Kemp, Paul (2019) Influence of resonance-driven bubble clouds on fine-scale behaviour of common carp (Cyprinus carpio). The Journal of The Acoustical Society of America, 146 (4), [2897]. (doi:10.1121/1.5137053).
Abstract
Acoustic-bubble barriers show potential as a management tool for fish passage. Although greater efforts are now being made to better understand the fundamentals that underpin reactions of fish to such barriers, the phenomenon of bubble coalescence has not yet been considered. When introducing air underwater smaller bubbles coalesce with successor bubbles at the orifice so that without vibration the bubble which enters the liquid is large. Orifice diameter has historically been used as a measure of bubble size, however as detachment and fragmentation occur unpredictably this method is unreliable, indicating insufficient control over the stimulus generated. This study used lower air flows (6 l min−1 m−1) and haptic feedback motors to vibrate the injection nozzles and reduce coalescence. Greater uniformity in bubble size allowed matching of the bubble population to a sound field to which the bubbles were resonant. In a proof-of-concept study, fish response to two resonant acoustic-bubble barriers was tested and compared to two non-resonant acoustic-bubble walls. The scattering and absorption coefficients for all segments of the bubble population were calculated to determine the most important bubble sizes for attenuation. Analysis of fish movement and orientation was used to examine fish behaviour in relation to the sound fields generated.
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- Faculties (pre 2018 reorg) > Faculty of Engineering and the Environment (pre 2018 reorg) > Inst. Sound & Vibration Research (pre 2018 reorg)
Current Faculties > Faculty of Engineering and Physical Sciences > School of Engineering > Institute of Sound and Vibration Research > Inst. Sound & Vibration Research (pre 2018 reorg)
Institute of Sound and Vibration Research > Inst. Sound & Vibration Research (pre 2018 reorg) - 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
- 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 - Current Faculties > Faculty of Engineering and Physical Sciences > School of Engineering > Civil, Maritime and Environmental Engineering > Water and Environmental Engineering Group
Civil, Maritime and Environmental Engineering > Water and Environmental Engineering Group
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