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Bosschaart, C. (author), Jansen, H.W. (author), de Jong, C.A.F. (author), Basten, T. (author)
A concept for underwater machinery noise mitigation of future civil and military ships is the application of a common deck structure, supporting multiple machines, which is installed on resilient mounts on the ship's foundation structure. TNO is addressing the availability and testing of tools to be able to set realistic targets for the radiated...
conference paper 2017
document
Ainslie, M.A. (author), de Jong, C.A.F. (author)
Because of the history of sonar and sonar engineering, the concept of “source level” is widely used to characterize anthropogenic sound sources, but is it useful for sources other than sonar transmitters? The concept and applicability of source level are reviewed for sonar, air guns, explosions, ships, and pile drivers. International efforts...
conference paper 2016
document
Thomsen, F. (author), Borsani, F. (author), Clarke, D. (author), de Jong, C. (author), de Wit, P. (author), Goethals, F. (author), Holtkamp, M. (author), Martin, E.S. (author), Spadaro, P. (author), van Raalte, G. (author), Victor, G.Y.V. (author), Jensen, A. (author)
The World Organization of Dredging Associations (WODA) has identified underwater sound as an environmental issue that needs further consideration. A WODA Expert Group on Underwater Sound (WEGUS) prepared a guidance paper in 2013 on dredging sound, including a summary of potential impacts on aquatic biota and advice on underwater sound monitoring...
conference paper 2016
document
de Jong, C.A.F. (author), Ainslie, M.A. (author), Heinis, F. (author), Janmaat, J. (author)
The underwater sound produced during construction of the Port of Rotterdam harbor extension (Maasvlakte 2) was measured, with emphasis on the contribution of the trailing suction hopper dredgers during their various activities: dredging, transport, and discharge of sediment. Measured source levels of the dredgers, estimated source levels of...
bookPart 2016
document
Zampolli, M. (author), Nijhof, M.J.J. (author), de Jong, C.A.F. (author), Ainslie, M.A. (author), Jansen, E.H.W. (author), Quesson, B.A.J. (author)
The acoustic radiation from a pile being driven into the sediment by a sequence of hammer strikes is studied with a linear, axisymmetric, structural acoustic frequency domain finite element model. Each hammer strike results in an impulsive sound that is emitted from the pile and then propagated in the shallow water waveguide. Measurements from...
article 2013
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