Sectors / Renewable Energy

 
 

JASCO’s noise assessment services span the planning, installation, and operation phases of:

  • In-stream tidal turbines

  • Wave energy devices

  • Undersea cable installations

Assessing underwater noise emissions and the effect of noise on marine wildlife are often important environmental requirements for regulatory approvals of offshore and nearshore energy projects. JASCO Applied Sciences has performed specialized underwater and airborne noise science for over 35 years, and we have performed environmental assessments pertaining to underwater noise for over 25 years. By providing noise assessment frameworks and regulatory liaison, we support our clients throughout the approval process.

 
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Preventing “over-regulation”

Underwater acoustic science is complex and multifaceted. JASCO works with governments and regulators to ensure appropriate and consistent regulatory guidelines are applied to energy projects.

 
 

Objective, scientifically defensible assessments

We enable our clients to satisfy regulatory requirements by providing scientifically defensible assessments of their projects. We present our assessments directly to regulators and ensure that noise regulations are applied correctly to our clients’ projects. We regularly perform public presentations of acoustic data and adjust the level of presentation detail to match the topics of interest and the technical background of the given audience.

Marc Garneau, then Canadian Minister of Transport, and JASCO’s David Hannay.

Marc Garneau, then Canadian Minister of Transport, and JASCO’s David Hannay.

 
 

Sound in Tidal Flow Environments

Learn more about underwater noise and tidal energy devices in this OERA hosted webinar by Dr. Bruce Martin, JASCO’s Applied Sciences Manager.

Bruce describes possible underwater acoustic effects of tidal energy installations, how to measure them, and how to model them considering the high energy of tidal environments like the Bay of Fundy.

 
 

Recent reports

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Turbine Audibility Assessment and How Sound Travels in High-Energy Environments
Turbine Audibility Assessment and How Sound Travels in High-Energy Environments

November 2020 — Nova Scotia, Canada

Client: Offshore Energy Research Association of NS

How does Sound Travel in High-Energy Environments? Effectiveness of Acoustic Monitoring Systems and Turbine Audibility Assessment: 2018 OERA Grand Passage Acoustic Monitoring Final Report

A monitoring and analysis program to advance our ability to perform and interpret passive acoustic monitoring for Environmental Effects Monitoring Plans (EEMPs) for marine tidal turbines. This study answers fundamental research questions that are not addressed by project specific EEMPs, including acoustic propagation effects and turbine audibility in environments with high tidal currents. Monitoring spanned a full 28-day tidal cycle and included an acoustic projector to study high-frequency propagation loss.

A collaboration with Dalhousie University.

Monitoring of Tidal Energy Platforms in Minas Passage
Monitoring of Tidal Energy Platforms in Minas Passage

2018-2019 — Nova Scotia, Canada

Clients: Fundy Ocean Research Centre for Energy (FORCE), Cape Sharp Tidal

2019: Appendix XI – Passive Acoustic Monitoring in a Tidal Energy Environment: Comparing Acoustic Data from Three Measurement Positions in the Minas Passage

2018: Acoustic Analysis of OpenHydro Open-Centre Turbine at FORCE

Measurement and analysis studies for the Fundy Ocean Research Centre for Energy and Cape Sharp Tidal in support of Environmental Effects Monitoring Plans required under their Environmental Assessment Approval. In 2018 JASCO conducted a challenging measurement study of underwater noise from the OpenHydro in-stream tidal turbine demonstration project in Minas Passage, home of the world’s highest tides. The results show that at most frequencies the turbine had a lower source level than vessels typical of the area. The 2019 study compares the noise levels at different measurement locations and further analyzes how the turbine contributed to the soundscape.

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Evaluation of Real-Time Particle Acceleration/Particle Velocity (PA/PV) Measurement System in a Tidal Environment
Evaluation of Real-Time Particle Acceleration/Particle Velocity (PA/PV) Measurement System in a Tidal Environment

December 2018 — Nova Scotia, Canada

Client: Offshore Energy Research Association of NS

Final Report

This project successfully tested and trialed a real-time drifting acoustic measurement system using a directional hydrophone sensor. The performance of the PV/PA compared favourably with a traditional hydrophone drifter but added the capability to discriminate the arrival direction of the received sounds.

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Assessment of Underwater Noise Generated by Wave Energy Devices
Assessment of Underwater Noise Generated by Wave Energy Devices

December 2009 — Oregon, United States

Client: Oregon Wave Energy Trust

A review study to: (1) provide a concise knowledge base of expected underwater noise conditions near the Oregon coast where wave energy projects could be developed, and (2) describe noise measurement methodologies suitable for effective regulatory assessment of potential acoustic impacts. Intended as a reference for wave energy developers to use when selecting approaches to underwater noise measurement that would be acceptable to regulatory bodies, consistent with the state of the industry, and cost effective to implement.

 

Contact us to learn more about JASCO’s services and products.