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Modelling acoustic propagation in realistic ocean through a time-domain environment-resolving ocean model
Pierre-Antoine Dumont1,2,3, Francis Auclair2, Yann Stéphan1
1Service Hydrographique et Océanographique de la Marine, Brest, France.
The Journal of the Acoustical Society of America
|December 18, 2024
Summary
New ocean numerical models accurately simulate acoustic wave propagation in a dynamic ocean. These advanced models offer precise insights into how ocean variability impacts sound, enhancing acoustic modeling capabilities.
Area of Science:
- Oceanography
- Acoustics
- Numerical Modeling
Background:
- Traditional ocean models often simplify acoustic wave behavior.
- Accurate simulation of acoustic propagation is crucial for understanding underwater environments.
Purpose of the Study:
- To demonstrate the capability of new non-hydrostatic, compressible ocean models in simulating acoustic waves.
- To evaluate the impact of ocean variability on low-frequency acoustic propagation.
Main Methods:
- Utilizing advanced numerical ocean models with adaptive spatial and temporal resolution.
- Simulating acoustic wave and mode propagation in a free-surface, stratified, and evolving ocean.
Main Results:
- The models accurately propagate acoustic waves and modes in a dynamic ocean.
- Demonstrated state-of-the-art acoustic propagation modeling.
- Illustrated the effects of ocean variability on acoustic propagation through 3D simulations.
Conclusions:
- These models represent a significant advancement in acoustic propagation modeling.
- Despite computational costs, they provide an unprecedented tool for deterministic analysis.
- The models are valuable for studying the effects of ocean dynamics on underwater acoustics.
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