Research and experimental verification on low-frequency long-range underwater sound propagation dispersion characteristics under dual-channel sound speed profiles in the Chukchi Plateau ...

• Main Authors: Weng, Jinbao, Qi, Yubo, Yang, Yanming, Wen, Hongtao, Zhou, Hongtao, Xue, Ruichao
• Format: Report
• Language: unknown
• Published: arXiv 2023
• Subjects: Sound cs.SD; Numerical Analysis math.NA; Audio and Speech Processing eess.AS; Atmospheric and Oceanic Physics physics.ao-ph; Applied Physics physics.app-ph; FOS Computer and information sciences; FOS Mathematics; FOS Electrical engineering, electronic engineering, information engineering; FOS Physical sciences; Chukchi
• Online Access: https://dx.doi.org/10.48550/arxiv.2311.08425; https://arxiv.org/abs/2311.08425

The dual-channel sound speed profiles of the Chukchi Plateau and the Canadian Basin have become current research hotspots due to their excellent low-frequency sound signal propagation ability. Previous research has mainly focused on using sound propagation theory to explain the changes in sound signal energy. This article is mainly based on the theory of normal modes to study the fine structure of low-frequency wide-band sound propagation dispersion under dual-channel sound speed profiles. In this paper, the problem of the intersection of normal mode dispersion curves caused by the dual-channel sound speed profile (SSP) has been explained, the blocking effect of seabed terrain changes on dispersion structures has been analyzed, and the normal modes has been separated by using modified warping operator. The above research results have been verified through a long-range seismic exploration experiment at the Chukchi Plateau. At the same time, based on the acoustic signal characteristics in this environment, two ... : 30 pages, 18 figures ...