Underwater Noise Measurements around a Tidal Turbine in a Busy Port Setting

Journal of Marine Science and Engineering

卷:10

Martin Wosnik¹  Patrick O’Byrne¹  Brian Polagye²  Joseph Haxel³  Garrett Staines³  Jayson Martinez⁴  Xiaoqin Zang⁴  Zhiqun Daniel Deng⁴ 

[1] Center for Ocean Engineering, University of New Hampshire, Durham, NH 03824, USA;

[2] Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA;

[3] Pacific Northwest National Laboratory, Coastal Sciences Division, Sequim, WA 98362, USA;

[4] Pacific Northwest National Laboratory, Earth Systems Science Division, Richland, WA 99354, USA;

关键词: marine energy;    underwater noise;    environmental monitoring;    drifting hydrophone;    tidal turbine;    current energy converter;   

DOI  :  10.3390/jmse10050632

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown