Impact pile driving creates intense, impulsive sound that radiates into the surrounding environment. Piles driven vertically into the seabed generate an azimuthally symmetric underwater sound field whereas piles driven on an angle will generate an azimuthally dependent sound field. Measurements were made during pile driving of raked piles to secure jacket foundation structures to the seabed in waters off the northeastern coast of the U.S. at ranges between 500 m and 15 km. These measurements were analyzed to investigate variations in rise time, decay time, pulse duration, kurtosis, and sound received levels as a function of range and azimuth. Variations in the radiated sound field along opposing azimuths resulted in differences in measured sound exposure levels of up to 10 dB and greater due to the pile rake as the sound propagated in range. The raked pile configuration was modeled using an equivalent axisymmetric FEM model to describe the azimuthally dependent measured sound fields. Comparable sound level differences in the model results confirmed that the azimuthal discrepancy observed in the measured data was due to the inclination of the pile being driven relative to the receiver.
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April 2020
April 17 2020
Characterization of impact pile driving signals during installation of offshore wind turbine foundations
Special Collection:
The Effects of Noise on Aquatic Life
Jennifer L. Amaral;
Jennifer L. Amaral
a)
1
Department of Ocean Engineering, University of Rhode Island
, Narragansett, Rhode Island 02882, USA
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James H. Miller;
James H. Miller
1
Department of Ocean Engineering, University of Rhode Island
, Narragansett, Rhode Island 02882, USA
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Gopu R. Potty;
Gopu R. Potty
1
Department of Ocean Engineering, University of Rhode Island
, Narragansett, Rhode Island 02882, USA
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Kathleen J. Vigness-Raposa;
Kathleen J. Vigness-Raposa
2
Marine Acoustics, Inc
, 2 Corporate Place, Suite 105, Middletown, Rhode Island 02842, USA
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Adam S. Frankel;
Adam S. Frankel
2
Marine Acoustics, Inc
, 2 Corporate Place, Suite 105, Middletown, Rhode Island 02842, USA
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Ying-Tsong Lin;
Ying-Tsong Lin
3
Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution
, Woods Hole, Massachusetts 02543, USA
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Arthur E. Newhall;
Arthur E. Newhall
3
Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution
, Woods Hole, Massachusetts 02543, USA
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Daniel R. Wilkes;
Daniel R. Wilkes
4
Centre for Marine Science and Technology, School of Earth and Planetary Sciences, Curtin University
, GPO Box U1987, Perth, Western Australia 6845, Australia
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Alexander N. Gavrilov
Alexander N. Gavrilov
4
Centre for Marine Science and Technology, School of Earth and Planetary Sciences, Curtin University
, GPO Box U1987, Perth, Western Australia 6845, Australia
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a)
Also at: Marine Acoustics, Inc, 2 Corporate Place, Suite 105, Middletown, Rhode Island 02842, USA. Electronic mail: [email protected]
J. Acoust. Soc. Am. 147, 2323–2333 (2020)
Article history
Received:
November 23 2019
Accepted:
March 19 2020
Citation
Jennifer L. Amaral, James H. Miller, Gopu R. Potty, Kathleen J. Vigness-Raposa, Adam S. Frankel, Ying-Tsong Lin, Arthur E. Newhall, Daniel R. Wilkes, Alexander N. Gavrilov; Characterization of impact pile driving signals during installation of offshore wind turbine foundations. J. Acoust. Soc. Am. 1 April 2020; 147 (4): 2323–2333. https://doi.org/10.1121/10.0001035
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