文献类型：期刊文献

英文题名：Low frequency ambient noise modeling and comparison with field measurements in the South China Sea

作者：Zhou, JianBo[1];Zhang, Minhui[2];Piao, ShengChun[2];Iqbal, Kashif[2];Qu, Ke[3];Liu, YaQin[2];Li, XiaoMan[2]

机构：[1]Northwestern Polytech Univ, Sch Marine Sci & Technol, Xian 710072, Shaanxi, Peoples R China;[2]Harbin Engn Univ, Acoust Sci & Technol Lab, Harbin 150001, Heilongjiang, Peoples R China;[3]GuangDong Ocean Univ, Coll Elect & Informat Engn, Zhanjiang 524088, Peoples R China

年份：2019

卷号：148

起止页码：34

外文期刊名：APPLIED ACOUSTICS

收录：SCI-EXPANDED(收录号：WOS:000460842800005)、、EI(收录号：20185106259794)、Scopus(收录号：2-s2.0-85058411376)、WOS

基金：This work was supported by the National Key R&D Program of China under Grant 2016YFC1400200, the Natural Science Foundation of China under the contract 11474073, and the Natural Science Foundation of GuangDong Province under the contract 2014A030310256.

语种：英文

外文关键词：Ambient noise; Coherence; Correlation; Directionality

外文摘要：This study models vertical properties of wind-induced ambient noise and compares the noise properties with field measurements. The Perkins-Kuperman model was used to calculate vertical coherence of low frequency ambient noise. Ambient noise measurements were made in the South China Sea 88 m deep using a vertical array with 32 hydrophones. Estimated vertical coherence was compared with theoretical prediction from the Perkins-Kuperman model under the assumption of negligible shipping noise. The measured coherences agreed reasonably with the model prediction, particularly in the low frequency range, coherence results show that the noise field was asymmetrical in the vertical direction. The estimated vertical directionality was close to the simulated results. However, deviations remained that could be due to receiver array distortion. Directionality pattern was asymmetric, with much more energy present at upward-looking than downward-looking angles, mainly due to combined effects of downward refracting sound speed profile and high loss sea bottom. (C) 2018 Published by Elsevier Ltd.