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Arctic Dispersion Interruption Phenomenon and Sound Source Depth Estimation

  • Weng Jinbao
  • Yang Yanming
  • Chen Benqing
  • Xu Dewei
  • Zhou Hongtao
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Abstract

The sound speed profile in the deep Arctic Ocean causes the surface layer to form a normal mode waveguide. When the depth of the sound source or receiver is near a node of the eigenfunction, the source cannot excite the mode, or the receiver cannot detect it, resulting in the modal amplitude at the receiver being approximately zero. This manifests as a dispersion interruption in the dispersion structure, which can be observed through time-frequency analysis of the received acoustic signal. Based on the interruption frequency identified from the received signal, combined with the relationship between node depth and modal frequency calculated from the ocean sound speed profile, the source depth can be estimated if the receiver depth is known. The phenomenon of dispersion interruption and the method of estimating source depth have been validated through simulations and experiments.

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Cite

BibTeXRIS
BibTeX
@misc{jinbao2026arctic,
  title = {{Arctic Dispersion Interruption Phenomenon and Sound Source Depth Estimation}},
  author = {Weng Jinbao and Yang Yanming and Chen Benqing and Xu Dewei and Zhou Hongtao},
  howpublished = {arXiv},
  year = {2026},
  month = aug,
  doi = {10.48550/arxiv.2608.30360},
  eprint = {2608.30360},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2608.30360},
}
RIS
TY  - UNPB
TI  - Arctic Dispersion Interruption Phenomenon and Sound Source Depth Estimation
AU  - Weng Jinbao
AU  - Yang Yanming
AU  - Chen Benqing
AU  - Xu Dewei
AU  - Zhou Hongtao
PY  - 2026
DA  - 2026/08/31
PB  - arXiv
DO  - 10.48550/arxiv.2608.30360
UR  - https://arxiv.org/abs/2608.30360
AB  - The sound speed profile in the deep Arctic Ocean causes the surface layer to form a normal mode waveguide. When the depth of the sound source or receiver is near a node of the eigenfunction, the source cannot excite the mode, or the receiver cannot detect it, resulting in the modal amplitude at the receiver being approximately zero. This manifests as a dispersion interruption in the dispersion structure, which can be observed through time-frequency analysis of the received acoustic signal. Based on the interruption frequency identified from the received signal, combined with the relationship between node depth and modal frequency calculated from the ocean sound speed profile, the source depth can be estimated if the receiver depth is known. The phenomenon of dispersion interruption and the method of estimating source depth have been validated through simulations and experiments.
ER  -