从2016年到2017年,在加拿大盆地双管道系统中观测声学传播,使用半径为150公里的断层扫描阵列
John A Colosi1, Peter F Worcester2, Matthew A Dzieciuch2
1Department of Oceanography, Naval Postgraduate School, 1 University Circle, Monterey, California 93943, USA.
The Journal of the Acoustical Society of America
|July 2, 2025
概括
北极的声音通道创造了独特的声学特性. 声学断层扫描揭示了波福特海中明显的信号行为.
科学领域:
- 海洋学 海洋学 海洋学
- 声学 声学 在声学方面
- 北极研究研究北极研究
背景情况:
- 北极波福特海有一个独特的双管道声道.
- 这个系统受到河流输入,冰盖和不同的水体的影响.
研究的目的:
- 分析北极波福特海双管道声道内的声学传播.
- 了解信号行为和分散特征.
主要方法:
- 使用了一年的声学断层扫描阵列 (150公里半径) 与宽带传输.
- 使用密集的垂直接收阵列进行详细的信号分析.
- 应用了一个垂直波数谱图技术.
主要成果:
- 观察到一致的反向几何分散 (低模式比高模式更快).
- 识别了不同的信号的第一次到达和最后的切断时间.
- 记录了非导管模式的正常分散,导致信号折叠.
结论:
- 双管道系统表现出独特的声学传播特性.
- 信号波动与分层和冰盖变化相关.
- 声学数据为表面热量流估计提供了洞察力.
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