Underwater Noise Measurement & Prediction

As the impact of human activity on the marine environment is better appreciated, effective monitoring of underwater noise is becoming more and more important. Sound travels very long distances easily through water and much of the sea’s life is highly sensitive to sound. The EU has adopted Marine Strategy Framework Directive 2008/56/EC outlining all member states’ commitment to ensuring proper treatment of their marine environments.

Commission Decision 2010/477/EU stresses the importance that

“introduction of energy, including underwater noise, is at levels that do not adversely affect the marine environment.”

Directive 2014/52/EU states that:

“With a view to ensuring a high level of protection of the marine environment, especially species and habitats, environmental impact assessment and screening procedures for projects in the marine environment should take into account the characteristics of those projects.”

We offer short and long-term underwater acoustic monitoring at depths of up to 500m and uninterrupted duration of up to a full year. Further capabilities include temperature and acceleration monitoring, assessment of risk to marine fauna, real-time marine mammal detection, identification and localization, and advanced underwater noise prediction and propagation modelling. We are equipped to monitor ultrasonic frequencies as high as 150kHz and infrasonic frequencies as low as 0.1Hz, in line with the requirements of Directive 2014/52/EU, all in industry-leading high fidelity.

Underwater acoustic monitoring is applicable to activities as varied as underwater pile driving, seismic surveys, construction of coastal projects such as harbours and jetties, offshore windfarms, shipping, ferries and recreational boating, dredging and sand mining, pipe and cable laying, and military activities.

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