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- Title
Underwater Noise Measurements around a Tidal Turbine in a Busy Port Setting.
- Authors
Haxel, Joseph; Zang, Xiaoqin; Martinez, Jayson; Polagye, Brian; Staines, Garrett; Deng, Zhiqun Daniel; Wosnik, Martin; O'Byrne, Patrick
- Abstract
Acoustic emissions from current energy converters remain an environmental concern for regulators because of their potential effects on marine life and uncertainties about their effects stemming from a lack of sufficient observational data. Several recent opportunities to characterize tidal turbine sound emissions have begun to fill knowledge gaps and provide a context for future device deployments. In July 2021, a commercial-off-the-shelf hydrophone was deployed in a free-drifting configuration to measure underwater acoustic emissions and characterize a 25 kW-rated tidal turbine at the University of New Hampshire's Living Bridge Project in Portsmouth, New Hampshire. Sampling methods and analysis were performed in alignment with the recently published IEC 62600-40 Technical Specification for acoustic characterization of marine energy converters. Results from this study indicate acoustic emissions from the turbine were below ambient sound levels and therefore did not have a significant impact on the underwater noise levels of the project site. As a component of Pacific Northwest National Laboratory's Triton Field Trials (TFiT) described in this Special Issue, this effort provides a valuable use case for the IEC 62600-40 Technical Specification framework and further recommendations for cost-effective technologies and methods for measuring underwater noise at future current energy converter project sites.
- Subjects
PORTSMOUTH (N.H.); UNDERWATER noise; NOISE measurement; UNIVERSITY of New Hampshire; PACIFIC Northwest National Laboratory (U.S.); ACOUSTIC emission; TURBINES; TECHNICAL specifications
- Publication
Journal of Marine Science & Engineering, 2022, Vol 10, Issue 5, p632
- ISSN
2077-1312
- Publication type
Article
- DOI
10.3390/jmse10050632