Modelling acoustic propagation in realistic ocean through a time-domain environment-resolving ocean model

被引:0
|
作者
Dumont, Pierre-Antoine [1 ,2 ,3 ]
Auclair, Francis [2 ]
Stephan, Yann [1 ]
Dumas, Franck [1 ]
机构
[1] Serv Hydrog & Oceanog Marine, Brest, France
[2] Univ Toulouse, Lab Aerol, CNRS, UPS, Toulouse, France
[3] Direct Gen Armement, Paris, France
来源
关键词
FREE-SURFACE; COHERENCE; ALGORITHM; FREQUENCY; DEEP; SEA;
D O I
10.1121/10.0034625
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
The new generation of non-hydrostatic and compressible numerical models of the ocean can explicitly simulate acoustic waves when and where space and time resolution is adapted. We show that these models can consequently propagate accurately acoustic waves and modes through a free-surface, stratified ocean evolving simultaneously both in space and time, bringing them to the state of the art of acoustic propagation modelling. To some extent, both numerical cost and memory footprint may temper their range of applications but they are an unprecedented tool to evaluate deterministically the effects of ocean variability on low-frequency acoustic propagation in a realistically-evolving ocean. This potential is illustrated by two examples of three-dimensional propagation: the wedge benchmark and Kelvin-Helmholtz instabilities.
引用
收藏
页码:4099 / 4115
页数:17
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