哈尔滨工程大学学报2024，Vol.45Issue(7)：1280-1287,8.DOI:10.11990/jheu.202309040
北极双声道波导声传播特性分析
An analysis of acoustic propagation characteristics of dual-duct waveguide in the Arctic
摘要
Abstract
The special dual-duct sound speed structure significantly affects underwater sound propagation in the Beaufort Sea of the Arctic.Utilizing data from the 9th Arctic Scientific Expedition,this paper studies the sound propagation characteristics of the dual-duct waveguide,focusing on analyzing the mechanism of the remarkable sound capture capability of the Beaufort duct.The findings reveal that at sufficiently high source frequencies,cer-tain modes will be captured in the Beaufort duct.These trapped modes will not be affected by sea ice or the sea-floor,resulting in minimal energy loss.When the sound source is located within the duct,the excited captured modes facilitate long-distance sound propagation.Additionally,the acoustic characteristics of these captured modes depend solely on variations in sound speed in the Beaufort duct,ensuring their stable propagation in the sound field and the formation of stable interference structures.关键词
北极/波弗特透镜/声传播/模态/传播损失/相速度/群速度/干涉结构Key words
Arctic/Beaufort lens/acoustic propagation/mode/transmission loss/phase velocity/group velocity/interference structure分类
数理科学引用本文复制引用
李卿基,韩笑,曹然,魏泽勋..北极双声道波导声传播特性分析[J].哈尔滨工程大学学报,2024,45(7):1280-1287,8.基金项目
国家自然科学基金项目(62371154) （62371154）
国家重点研发计划(2021YFC2801204). （2021YFC2801204）
