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Research project

The application of non-linear theory and novel acoustical techniques for the quantitative examination of bubble populations in marine sediments

Staff

Lead researcher

Professor Timothy Leighton FRS FREng FMedSci ScD

Professor of Ultrasonics

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Other researchers

Emeritus Professor Victor Humphrey

Research interests

  • Professor Humphrey has particular research interests in the areas of medical ultrasound and underwater acoustics. Common themes running through his research include the understanding and application of non-linear acoustics and the laboratory measurement of physical acoustic phenomena including scattering. His main research interests include: · Nonlinear propagation, streaming and imaging in medical ultrasonics; · Ultrasonic heating and propagation in biological media; · Parametric arrays and their application to acoustic measurements in the laboratory; · Acoustic transmission and reflection properties of isotropic and anisotropic materials; · Scattering from objects and methods of measuring and predicting the scattered field for regular and irregular bodies; · Numerical modelling of transducers and fields.

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Professor Justin Dix

Professor in Marine Geology & Geophysics

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Collaborating research institutes, centres and groups

Acoustics Group

Our group’s research topics range from the protection of marine mammals to the medical use of ultrasonics and the environmental effects of aircraft noise.

Research outputs

Absolute calibration of hydrophones immersed in sandy sediment
Gary B.N. Robb,
Stephen P. Robinson,
Pete D. Theobald,
Gary Hayman,
Victor F. Humphrey,
Timothy G. Leighton,
Lian Sheng Wang,
Justin K. Dix,
& Angus I. Best
, 2009 , Journal of the Acoustical Society of America , 125 (5) , 2918--2927
DOI: 10.1121/1.3106530
Type: article
Preliminary mapping of void fractions and sound speeds in gassy marine sediments from subbottom profiles
T.G. Leighton,
& G.B.N. Robb
, 2008 , Journal of the Acoustical Society of America , 124 (5) , EL313--EL320
DOI: 10.1121/1.2993744
Type: article
The Rayleigh-Plesset equation in terms of volume with explicit shear losses
T.G. Leighton
, 2008 , Ultrasonics , 48 (2) , 85--90
DOI: 10.1016/j.ultras.2007.10.004
Type: article
Towards field measurements of populations of methane gas bubbles in marine sediment: an inversion method required for interpreting two-frequency isonification data from sediment containing gas bubbles
T.G. Leighton,
A. Mantouka,
P.R. White,
& Z. Klusek
, 2008 , Hydroacoustics , 11 , 203--224
Type: article
Theory for acoustic propagation in marine sediment containing gas bubbles which may pulsate in a non-stationary nonlinear manner
T.G. Leighton
, 2007 , Geophysical Research Letters , 34 (17) , L17607
DOI: 10.1029/2007GL030803
Type: article
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