波对亚特兰蒂斯II海山附近的海洋声学模拟的影响
Matthew McKinley1, Daoxun Sun2, Brian O'Donnell3
1School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
The Journal of the Acoustical Society of America
|April 21, 2025
概括
海底山附近的地形波显著改变了水下声速概况,影响了声层声道 (SLAD) 中的声学传播和能量. 高分辨率的海洋模型揭示了这些对声音通道和传输损失的影响.
科学领域:
- 海洋学 海洋学 海洋学
- 声学 声学 在声学方面
- 流体动力学 流体动力学
背景情况:
- 水下声学传播受海洋学特征的影响.
- 海山可以产生复杂的水力动力学现象,如波.
- 了解这些影响对于声纳性能和水下通信至关重要.
研究的目的:
- 为了研究波对亚特兰蒂斯二号海山附近声学传播的影响.
- 分析波如何改变声速形状并影响声层声道 (SLAD).
- 评估这些声学效应的空间和时间变化.
主要方法:
- 利用沿海和区域海洋社区 (CROCO) 模型进行亚尺度允许海洋循环模拟.
- 分析了对声速概况和SLAD.的水文影响.
- 进行了3D射线追踪模拟,以评估传输损失.
主要成果:
- 发现李波会显著改变声速的形状,影响深音通道和声层深度.
- 声学传播显示出显著的变化,能量从SLAD被阻断,Lee波将声波层深度提升.
- 低频到中频声传播 (1000-2000 Hz) 受到影响,观察到传输损失的实质空间变化.
结论:
- 高分辨率的海洋模型是研究波生成及其对水下声学影响的有效工具.
- 李波导致海洋声速场的显著空间和时间调制.
- 这些调制对声学传播特征有相当大的影响,特别是影响复杂环境中的声纳系统.
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