Multipath structure of the typical under-ice sound channel in the Arctic: theory and experiment

	Multipath structure of the typical under-ice sound channel in the Arctic: theory and experiment
	Liu Chonglei 1; Huang Haining 2; Yin Li 2; Liu Na 3; Wei Chonghua 2; Li Qihu 2
刊名	Chinese Journal of Acoustics
	2019
卷号	38 期号:1 页码:21-34
关键词	Arctic under-ice sound channel multipath structure
ISSN号	0217-9776
英文摘要	Considering the typical acoustic environment of the Arctic, this paper proposes a method based on OASES-Bellhop coupled model to rapidly analyze the multipath structure of the under-ice sound channel. Firstly the proposed model refers to ice plate as stratified elastic media with some roughness. Secondly, it uses the perturbation method and Kirchhoff approximation theory to solve the scattering loss due to the sea ice inhomogeneity. Finally, the model predicts the multipath structure of the under-ice channel through Ray theory. The results of the numerical simulation and experiment indicate that the typical Arctic sound channel presents multipath structures due to the sea ice and seabed in the range of 6 km, respectively. The sea ice reflection paths are stable, with a short multipath spread within 14 ms. The seabed reflection paths have relatively weak strength. The proposed OASES-Bellhop coupled model successfully predicts the amplitude and delay of the multipath structure with small error, which indicates the proposed model is able to analyze and predict the multipath structure of the observed acoustic environment in experiment.
资助项目	supported by the Key Program of Chinese Academy of Sciences
WOS研究方向	Acoustics
语种	英语
CSCD记录号	CSCD:6430895
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/28327]
专题	自然资源部第一海洋研究所
作者单位	1.Institute of Acoustics, Chinese Academy of Sciences;;University of Chinese Academy of Science, ;;, ;;, Beijing;;Beijing 100190;;100049 2.Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China 3.Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China 4.Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China 5.Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China 6.The First Institute of Oceanography, SOA, Qingdao, Shandong 266061, China
推荐引用方式 GB/T 7714	Liu Chonglei,Huang Haining,Yin Li,et al. Multipath structure of the typical under-ice sound channel in the Arctic: theory and experiment[J]. Chinese Journal of Acoustics,2019,38(1):21-34.
APA	Liu Chonglei,Huang Haining,Yin Li,Liu Na,Wei Chonghua,&Li Qihu.(2019).Multipath structure of the typical under-ice sound channel in the Arctic: theory and experiment.Chinese Journal of Acoustics,38(1),21-34.
MLA	Liu Chonglei,et al."Multipath structure of the typical under-ice sound channel in the Arctic: theory and experiment".Chinese Journal of Acoustics 38.1(2019):21-34.