Effect of Mesoscale eddies on underwater sound propagation

doi:10.1016/j.apacoust.2008.05.007

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋环境与数值模拟研究室

	Effect of Mesoscale eddies on underwater sound propagation
	Jian, Y.J.1,2; Zhang, J.3,4; Liu, Q.S.5; Wang, Y.F.3
刊名	APPLIED ACOUSTICS
	2009-03
卷号	70 期号:3 页码:432-440
关键词	Mesoscale warm-core eddy Cyclonic eddies Sound propagation Transmission loss PE modeling
ISSN号	0003-682X
DOI	10.1016/j.apacoust.2008.05.007
英文摘要	The effects of sound speed variables induced by an anticyclonic eddy and a field of three cyclonic eddies on long-range sound propagation are investigated respectively. A deep-sea analytical eddy model [Henrick RF, Siegmann WL, Jacobson MJ. General analysis of ocean eddy effects for sound transmission applications. J Acoust Soc Am 1977:62:860-870] is used to determined sound speed distributions produced by warm-core ring in the southwest of South China Sea. Furthermore, the above analytical eddy model is generalize to include the azimuth angle variation and is used to determined sound speed distributions produced by Gulf Stream rings with different strengths. The theoretical temperature fluctuations induced by the warm eddy and a eddy field including three cyclonic eddies agree qualitatively with the in situ investigation data. The transmission loss of acoustic energy through the cross section of the warm-core ring center and three cyclonic eddy centers is simulated using 2-D parabolic-equation (PE) numerical modeling. It is found that the acoustic field has a significant change with variation of the location of SOFAR axis in the presence of the warm eddy and three cyclonic eddies comparing with the scenario of no eddies, When the source is located in the outside of the warm-core eddy and three cyclonic eddies respectively, and the receiver is located in outside of the eddy, the transmission loss as a function of range is investigated at different receive depth. It is shown that the changes of transmission loss caused by the warm-core eddy and three cyclonic eddies are as much as 20 dB than that of no-eddy situation. In the case of three cyclonic eddies, the largest discrepancy of transmission loss is about 40 dB near the range of 45 km for a 25-Hz source being located at a depth of 1500 m. (C) 2008 Elsevier Ltd. All rights reserved.
资助项目	Program for New Century Excellent Talents in University[NCET-06-0731]
WOS研究方向	Acoustics
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000262243300006
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/4416]
专题	业务部门_海洋环境与数值模拟研究室
作者单位	1.Ocean Engineering Research Center, School of Engineering, Zhongshan University, No. 135 Xingang Xi Road, Guangzhou, 510275, China; 2.Guangdong Province Key Laboratory of Coastal Ocean Engineering, Zhongshan University, Guangzhou, 510275, China; 3.First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, China; 4.Key Lab of Marine Science and Numerical Modeling, State Oceanic Administration, Qingdao, 266061, China; 5.School of Mathematical Science, Inner Mongolia University, Hohhot, 100080, China
推荐引用方式 GB/T 7714	Jian, Y.J.,Zhang, J.,Liu, Q.S.,et al. Effect of Mesoscale eddies on underwater sound propagation[J]. APPLIED ACOUSTICS,2009,70(3):432-440.
APA	Jian, Y.J.,Zhang, J.,Liu, Q.S.,&Wang, Y.F..(2009).Effect of Mesoscale eddies on underwater sound propagation.APPLIED ACOUSTICS,70(3),432-440.
MLA	Jian, Y.J.,et al."Effect of Mesoscale eddies on underwater sound propagation".APPLIED ACOUSTICS 70.3(2009):432-440.