Marine Fauna Sound Modelling for Environmental Impact Assessments

The field of underwater acoustics modelling is rapidly evolving due to the large increases in computational power with cloud computing. Where previously only simple forward stepping numerical methods were the only alternative for solving practical ocean applications, nowadays many of the acoustic modelling techniques can be deployed for practical problems with solutions obtained in useful timeframes. The aforementioned expansion of acoustic modelling techniques means that the most suitable technique can be applied for the specific application, improving accuracy and reducing excess conservatism. Typical examples include improved techniques that have greater accuracy at modelling sound absorption in seabeds.

AMOG performs underwater acoustic modelling using techniques which are built upon the U.S. Naval Research Laboratory acoustic models and include in-house AMOG modifications to enable deployment of parallelised algorithms across multi-core clusters on the cloud. It is AMOG’s preference to benchmark predictions against locally acquired field data wherever possible to reduce the uncertainty due to local conditions.

When it comes to physical experimentation, AMOG has a proven track record in delivering successful hydro-acoustic experimentation programs including small & medium scale testing. Roles include supervising university facility staff to run programs right through to running the entire programs. AMOG has had experience designing, building and testing parts of towed sonar arrays and designing and building test facilities.

AMOG has a proven track record of working with global and national companies and organisations including the Australian Maritime College (AMC) at the University of Tasmania, Hydro Tasmania, Monash University and Thales. These skills, capabilities and experience put AMOG in good stead in the underwater acoustic industry of Australia and beyond.

AMOG is able to support clients by offering the follow services in relation to Underwater Hydro-Acoustic Modelling and Experimentation:

  • Marine Fauna Sound Modelling for Environmental Impact Assessments
  • General Underwater Hydro-Acoustic Modelling utilising cloud computing
  • Modelling noise sources due to cavitation induced by propellors
  • Modelling multiple noise sources
  • SPL (Sound Pressure Level) and SEL (Sound Exposure Level) assessments
  • Independent review of Hydro-Acoustic Modelling Techniques
  • Prototyping underwater hydro-dynamic equipment
  • Test facility design and build
  • Test site feasibility studies
  • Offshore wind pile driving impulsive underwater noise and mitigation using bubble curtain assessments

 Hydro-Acoustic Modelling