Acoustic signals measured during marine piling

NPL offers a service for the assessment of the impact of underwater noise, including the in-situ measurement of noise, and the evaluation of the impact on marine life.

Increasing concern over the levels of man-made noise in the ocean and its effect on marine life has led to requirement for environmental impact assessments (EIAs).

These require assessment of the impact on marine life from sources such as:

• Oil and gas operations
• Offshore marine renewable energy
• Dredging and aggregate extraction
• Shipping traffic

In collaboration with partners such as Loughborough University, NPL provides the acoustics expertise required to satisfy the requirements of regulators (for example, for an FEPA licence).

Using appropriate acoustic propagation models, the received sound field may be calculated as a function of range from the source, including the effect of dependence on frequency and local bathymetry. Estimates may then be made of the zones of impact required for mitigation purposes. With our partners, NPL can also offer consultancy in the assessment of the impact of noise on marine mammals and fish using internationally accepted approaches.

For more information please contact Pete Theobald