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Wind-driven ambient noise characteristics in the Western Canadian arctic
Najeem Shajahan1,2, William D Halliday1,2, David R Barclay3
1Wildlife Conservation Society Canada, 169 Titanium Way, Whitehorse, Yukon Territory, Y1A 0E9, Canada.
JASA Express Letters
|February 3, 2025
Summary
Ambient noise in the Canadian Arctic is strongly linked to wind speed. A new empirical model accurately predicts wind noise characteristics, validated with field data.
Area of Science:
- Oceanography
- Acoustics
- Arctic research
Background:
- Underwater ambient noise is a critical factor in marine ecosystems.
- Understanding noise sources is essential for environmental monitoring in the Arctic.
Purpose of the Study:
- To analyze ambient noise in the western Canadian Arctic.
- To identify the correlation between noise levels and wind speed.
- To develop and validate an empirical model for wind noise.
Main Methods:
- Collected ambient noise data from seven Arctic locations (30-350m depth) over five years (2018-2022).
- Removed noise data contaminated by non-wind sources.
- Fitted a multi-parameter empirical model to predict wind noise characteristics.
- Compared model results with existing models and validated using field data.
Main Results:
- A strong correlation was found between measured noise levels and wind speed after data cleaning.
- The developed empirical model effectively predicts the characteristics of wind-generated noise.
- Model predictions showed good agreement with existing models and were validated by field data.
Conclusions:
- Wind speed is a primary driver of ambient noise in the studied Arctic region.
- The developed empirical model provides a reliable tool for characterizing wind noise in Arctic waters.
- This research contributes to a better understanding of underwater acoustic environments in the Arctic.
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