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关键词 | GULF-STREAM RING ; CYCLONIC EDDIES ; EDDY ; TRANSMISSION ; SEA |
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:8080/handle/2SI8HI0U/25641] ![]() |
专题 | 自然资源部第一海洋研究所 |
通讯作者 | Jian, Y. J. |
作者单位 | 1.Zhongshan Univ, Ocean Engn Res Ctr, Sch Engn, Guangzhou 510275, Guangdong, Peoples R China 2.Zhongshan Univ, Guangdong Prov Key Lab Coastal Ocean Engn, Guangzhou 510275, Guangdong, Peoples R China 3.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China 4.State Ocean Adm, Key Lab Marin Sci & Numer Modeling, Qingdao 266061, Peoples R China 5.Inner Mongolia Univ, Sch Math Sci, Hohhot 100080, Peoples R 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. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论