2019_programme: COUPLING 3D ACOUSTIC PROPAGATION TO OPERATIONAL OCEAN CIRCULATION MODELS.
- Session: 26. Sound propagation in shallow and deep water
- Lecture: COUPLING 3D ACOUSTIC PROPAGATION TO OPERATIONAL OCEAN CIRCULATION MODELS.
Paper ID: 816
Author(s): Van Golde Ilmer, Guerreiro Martha, Rodriguez Orlando, Quaresma Luis, Stephan Yann
Presenter: Van Golde Ilmer
Presentation type: oral
Abstract: An operational 3D underwater acoustic model is currently being implemented at the Portuguese Navy to estimate real-time ocean ambient noise levels. To achieve this goal, accurate noise source positioning and ocean structure dynamics is required. While noise source information can be obtained from real time AIS data, 3D ocean structure information cannot be obtained only from observations. As such, the present paper aims to be a preliminary study of the use of 3D numerical ocean circulation model, to provide the ocean structure required for operational underwater acoustic modelling.\nThe HYCOM ocean circulation model allows for a hybrid vertical discretization of the ocean structure, enabling high resolution surface Z-levels while maintaining a good discretization of the deep ocean water masses through isopycnal layers. Operational HYCOM outputs are validated and evaluated as the source for the ocean profile required for acoustic modelling.
Download the full paper
- Corresponding author: Mr Van Golde Ilmer
Affiliation: Instituto Hidrografico