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    Numerical Modelling of Sound Radiation from Marine Pile Driving over Elastic Seabeds

    Access Status
    Fulltext not available
    Authors
    Wilkes, D.
    Gavrilov, Alexander
    Date
    2016
    Type
    Conference Paper
    
    Metadata
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    Citation
    Wilkes, D. and Gavrilov, A. 2016. Numerical Modelling of Sound Radiation from Marine Pile Driving over Elastic Seabeds, in Zhou Y., Lucey A., Liu Y., Huang L. (eds), Proceedings of the 3rd Symposium on Fluid-Structure-Sound Interactions and Control (FSSIC), Jul 5-9 2015, pp. 107-112. Perth, Australia: Springer.
    Source Title
    Fluid-Structure-Sound Interactions and Control
    Source Conference
    3rd Symposium on Fluid-Structure-Sound Interactions and Control (FSSIC)
    DOI
    10.1007/978-3-662-48868-3_17
    ISBN
    978-3-662-48866-9
    School
    Centre for Marine Science and Technology
    URI
    http://hdl.handle.net/20.500.11937/50778
    Collection
    • Curtin Research Publications
    Abstract

    This work investigates the underwater sound emission of marine pile driving over elastic seabeds. The finite element method is used to model sound pressure in the near field of an axisymmetric pile and environment model, where the seabed is modelled as both fluid (fluid sand) and elastic (sand, calcarenite) materials. The presented results show that the inclusion of shear in the seabed has a marked effect on the characteristics of the radiated acoustic field in the water column, even for seabed materials which have a low shear speed. In particular, the secondary structural waves reflected from the pile ends in the elastic seabed model emit significantly less acoustic energy compared to the fluid seabed models. Scholte waves also can be observed to propagate along the fluid–solid interface in the elastic seabed models.

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