在新英格兰泥的范围依赖的轨道上使用环境声音进行海底表征)
Martin Siderius1, Stan Dosso2, Brian Granger3
1Electrical and Computer Engineering Department, Portland State University, Portland, Oregon 97201, USA.
The Journal of the Acoustical Society of America
|April 24, 2025
概括
海洋环境声音揭示了新英格兰泥的海底特性. 这种被动声学方法在1.7公里长的轨道上特征化了沉积层和地声学特性.
科学领域:
- 海洋学 海洋学 海洋学
- 声学 声学 在声学方面
- 地质物理学 地质物理学
背景情况:
- 海洋环境声音为海底特征提供了一种非侵入性的方法.
- 之前的研究已经利用了声学数据,但先进的地声学倒置不太常见.
研究的目的:
- 用风产生的海洋环境声音来描述海底的特性.
- 为了研究新英格兰泥的地声学参数的范围依赖性.
主要方法:
- 一个15米高的垂直水声机阵列收集了环境声音数据 (50-5000赫兹).
- 应用了光束成形技术 (400-700 Hz) 和被动法度计处理.
- 跨维的地球声学倒置利用了功率反射系数.
主要成果:
- 海底层结构呈现出轻微的范围依赖.
- 估计的地球声学特性 (声音速度,密度,衰减) 是一致的,但显示了变化.
- 通过被动声学方法,成功地绘制了海底特征.
结论:
- 风产生的海洋环境声音对海床的特征有很大影响.
- 地声逆转揭示了沉积物性质的微妙变化.
- 新英格兰泥显示了空间变化的海底特征.
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