详细信息
南海东北部中尺度暖涡对声传播的影响 ( EI收录)
Influence of mesoscale warm eddies on sound propagation in the northeastern South China Sea
文献类型:期刊文献
中文题名:南海东北部中尺度暖涡对声传播的影响
英文题名:Influence of mesoscale warm eddies on sound propagation in the northeastern South China Sea
作者:朱凤芹[3,4];张海刚[1,2,3];屈科[3,4]
机构:[1]哈尔滨工程大学水声技术重点实验室,黑龙江,哈尔滨150001;[2]海洋信息获取与安全工业和信息化部重点实验室(哈尔滨工程大学),黑龙江哈尔滨150001;[3]哈尔滨工程大学水声工程学院,黑龙江哈尔滨150001;[4]广东海洋大学电子与信息工程学院,广东湛江524000
年份:2021
卷号:42
期号:10
起止页码:1496
中文期刊名:哈尔滨工程大学学报
外文期刊名:Journal of Harbin Engineering University
收录:CSTPCD、、CSCD2021_2022、EI(收录号:20214411101937)、Scopus、北大核心、CSCD、北大核心2020
基金:国家自然科学基金项目(11974084,41406041);国防科工局稳定支持项目(JCKYS2020604SSJS004).
语种:中文
中文关键词:南海东北部;暖涡;声传播;PE方法;传播损失;会聚区;观测数据;理论模型
外文关键词:northeastern South China Sea;warm eddy;sound propagation;PE method;transmission loss;convergence area;observation data;theoretical model
中文摘要:中尺度涡是引起海洋声速水平非均匀分布以及声传播起伏的主要因素之一,本文研究了南海东北部单个中尺度暖涡的声传播效应。根据暖涡现场观测数据,利用涡旋动力学模型求解流函数,进而获得声速场数据,再结合PE方法计算了中尺度暖涡对声传播的影响,并给出了声源处于不同位置处声传播效应。结果表明:暖涡的存在,改变了声道轴深度,从而对声线传播方向产生影响,暖涡的存在使从暖涡中心出发的声线会聚区宽度减小,汇聚位置前移,暖涡引起的传播损失在有涡和无涡时可以达到30 dB以上。
外文摘要:Mesoscale eddies are one of the main factors that cause the horizontal inhomogeneous distribution of the ocean sound velocity and fluctuations of sound propagation.In this paper,the effect of mesoscale warm eddies on sound propagation in the northeastern South China Sea is studied.According to the on-site observation data of warm eddies,the current function is solved using the vortex dynamic model,and then corresponding sound speed data are obtained.The influence of mesoscale warm eddies on sound propagation is calculated using the parabolic equation method,and then the propagation effect of the sound source in different positions is given.Results show that the existence of warm eddies changes the depth of the SOFAR axis and causes affection on the sound propagating direction.The existence of warm eddies reduces the width of the sound ray convergence zone starting from the center of the warm vortex,and the convergence position moves forward.The transmission loss with and without warm eddies can reach more than 30 dB.
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