Inaugural Lecture by Prof. Timothy G. Leighton FREng FRS, University of Southampton

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Technical lecture
24 April 2018 18:45 - 20:15
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Description

 

Using the sound of bubbles against two apocalypses

Timothy G. Leighton FREng FRS

Institute of Sound and Vibration Research, Faculty of Engineering and the Environment, University of Southampton, Highfield, Southampton SO17 1BJ, UK

Naturally-occurring underwater bubbles are extremely powerful sources of underwater sound. They act as sources for the sound of a waterfall or a breaking ocean wave, when those features inject atmospheric gas underwater to form bubbles, which then ring like tiny bells.

By understanding how bubbles make sound, we can listen to the ocean, and track the >1 billion tonnes of atmospheric carbon that transfers between atmosphere and ocean annually when ocean waves break and trap atmospheric gas under the sea. Furthermore, we can monitor the leakage of greenhouse gases from the seabed into the atmosphere, which happens when the oceans warm, and opens up the possibility of a thermal catastrophe, where warming oceans cause the release of more greenhouse gases, further warming the oceans in an apocalyptic feedback loop. 

Bubbles can also bend the underwater soundfields produced by other acoustic sources. This effect is exploited by whales and dolphins when they use sound for hunting, and provides us with new options when hunting for explosives or covert surveillance equipment.  The lecture closes by discussing the role that acoustic bubbles have in mitigating the ‘antibiotic apocalypse’, which by 2050 is predicted to be causing more deaths than cancer, and will have cost the world economy more than the current size of the global economy.

 

18:00 – Doors open
18:45 – Lecture starts

 

 Prof. Tim G Leighton
 
 



 

 

 

 

  

  

  

Biography

Timothy Leighton is Professor of Ultrasonics and Underwater Acoustics at the Institute of Sound and Vibration Research at the University of Southampton. He undertakes fundamental research in acoustics, and then takes his discoveries through to products, including numerous inventions for healthcare, ocean exploration, catastrophe relief, and industry. He is founding Chair of Global-NAMRIP (Network for Anti-Microbial Resistance and Infection Prevention).  He has been awarded 8 medals for research and 5 international prizes for invention from the Royal Society, the Institute of Physics, the Institution of Chemical Engineers, the International Commission on Acoustics, the Acoustical Society of America and Institute of Acoustics.  He is a Fellow of the Royal Society, a Fellow of the Royal Academy of Engineering, and advises numerous governmental and international bodies. (https://en.wikipedia.org/wiki/Timothy_Leighton)
 



 

Speaker(s)

Timothy Leighton FREng FRS is Professor of Ultrasonics and Underwater Acoustics at the Institute of Sound and Vibration Research at the University of Southampton. He undertakes fundamental research in acoustics, and then takes his discoveries through to products.

Address

Lecture Theatre B Physics Building [46]
University of Southampton
Highfield Campus
University Road
Southampton
SO17 1BJ
United Kingdom

Contact Details

Georges Limbert

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