W Erick Rogers, Laurie T Fialkowski, Daniel J Brooker, Gleb Panteleev, Joseph M Fialkowski
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引用次数: 0
摘要
本研究涉及海洋环境噪声(AN)中 "风噪声 "成分的预测。它以 Felizardo 和 Melville 的开创性论文[(1995 年)。 J. Phys. Oceanogr. 25, 513-532]为基础,作者在该论文中量化了环境噪声与单个风/波参数之间的相关性。声学数据来自六个不同地点的水听器,风/波参数来自系泊浮标和数值模型。我们介绍了为本研究开发的一种程序,该程序可确定 AN 与波浪参数的相关性,而与风速的相互相关性无关。然后,我们介绍了配对校准/预测实验,即同时使用多个风/波参数来估算 AN。我们发现,包含波浪参数的改进是稳健的,但微不足道;通常,均方根误差(RMSE)降低不到 0.3 dB 和/或原始均方根误差的 12%。我们对后一种结果的解释是,相对于发展较慢的波浪总能量等而言,破浪对当地风力变化的响应速度较快。这一结果与之前的破浪观测结果一致,如 Babanin[(2011 年)。海洋表面波的破碎与消散》(剑桥大学出版社,英国剑桥),第 3 章]。我们将结合各种波参数对风强迫的时间/空间响应来讨论这个问题。
Utility of ocean wave parameters in ambient noise predictiona).
This study is concerned with prediction of the "wind noise" component of ambient noise (AN) in the ocean. It builds on the seminal paper by Felizardo and Melville [(1995). J. Phys. Oceanogr. 25, 513-532], in which the authors quantified the correlation between AN and individual wind/wave parameters. Acoustic data are obtained from hydrophones at six diverse locations, and wind/wave parameters are obtained from moored buoys and numerical models. We describe a procedure developed for this study that identifies correlation of AN with wave parameters, independent of their mutual correlation with wind speed. We then describe paired calibration/prediction experiments, whereby multiple wind/wave parameters are used simultaneously to estimate AN. We find that the improvement from inclusion of wave parameters is robust but marginal; typically, root mean square error (RMSE) is reduced by less than 0.3 dB and/or less than 12% of the original RMSE. We interpret the latter outcome as suggesting that wave breaking responds to changes in local winds quickly, relative to, for example, total wave energy, which develops more slowly. This outcome is consistent with prior observations of wave breaking, e.g., Babanin [(2011). Breaking and Dissipation of Ocean Surface Waves (Cambridge University Press, Cambridge, UK), Chap. 3]. We discuss this in context of the time/space response of various wave parameters to wind forcing.
期刊介绍:
Since 1929 The Journal of the Acoustical Society of America has been the leading source of theoretical and experimental research results in the broad interdisciplinary study of sound. Subject coverage includes: linear and nonlinear acoustics; aeroacoustics, underwater sound and acoustical oceanography; ultrasonics and quantum acoustics; architectural and structural acoustics and vibration; speech, music and noise; psychology and physiology of hearing; engineering acoustics, transduction; bioacoustics, animal bioacoustics.