用光纤分布式声学传感器监测海洋珊瑚礁声景
Talha Ariff1, Michelle-Nicole Havlik2, Chun Hong Kang1
1Photonics Laboratory, Division of Computer, Electrical and Mathematical Sciences & Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.
Scientific reports
|November 29, 2025
概括
光纤分布式声学传感 (DAS) 为实时海洋珊瑚礁监测提供了一种新且具有成本效益的方法. 这项技术提供了高分辨率的珊瑚礁声景的空间映射,克服了传统声学传感器的局限性.
科学领域:
- 海洋生态海洋生态学
- 声学监控 声学监控 声学监控
- 传感技术 传感技术
背景情况:
- 珊瑚礁是重要的生态系统,受到人为噪音的威胁.
- 传统的声学监控方法 (水声器) 有局限性:基于点的传感,电池依赖性和昂贵的数据检索.
- 现有的传感技术不足以进行全面的实时珊瑚礁健康评估.
研究的目的:
- 探索光纤分布式声学传感 (DAS) 的实时海洋珊瑚礁监测的应用.
- 为了在珊瑚礁环境中比较DAS性能与传统水声机.
- 评估DAS的可行性,用于高分辨率的珊瑚礁声景的空间映射.
主要方法:
- 在红海中部的一个退化的沿海珊瑚礁区域部署了一种光纤DAS系统和一台常规水声.
- 选择一个有生物活动的珊瑚礁代理地点 (,珊瑚鱼) 进行监测.
- 记录声学数据以分析声音景观并追踪生物和人为声源.
主要成果:
- 在1.55kHz之间检测到显著的声学活动,在低光条件下增加了的声.
- 识别了100~1000赫兹范围内的鱼类发声 (鼓,冲动).
- 成功追踪了潜水员的运动,证明了DAS的空间绘图能力.
结论:
- 光纤DAS技术显示了实时,高分辨率的海洋珊瑚礁监测的巨大潜力.
- DAS为传统的声学监控方法提供了一个全面且具有成本效益的替代方案.
- 这项研究验证了DAS在珊瑚礁环境中持续声学监测的可行性.
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