海洋噪音的贡献者在南方居民杀手的息地
Alexander O MacGillivray1, Forest M C Stothart1, Connor H Grooms1
1JASCO Applied Sciences, #2101-4464 Markham St., Victoria, BC V8Z 7X8, Canada.
Marine pollution bulletin
|April 1, 2025
概括
海上船舶交通在南方居民杀手 (SRKW) 息地的水下噪音污染中起着重要作用. 渡轮和货船是主要的噪音来源,影响SRKW的关键声学环境.
科学领域:
- 海洋声学 海洋声学
- 海洋学 海洋学 海洋学
- 保护生物学 保护生物学
背景情况:
- 水下噪音污染对海洋哺乳动物构成威胁.
- 南方居民杀手 (SRKW) 居住在海上,船只流量很大.
- 了解噪音源对于SRKW保护至关重要.
研究的目的:
- 量化各种海洋部门对水下噪音污染的贡献.
- 评估船舶噪声对临灭绝的南方定居虎 (SRKW) 声学息地的影响.
主要方法:
- 为不列颠哥伦比亚省和华盛顿州的大陆架水域开发了一个音景模型.
- 模型输入包括自动识别系统 (AIS) 船舶交通数据,非AIS交通的空中调查估计,以及水下船舶噪声测量.
- 分析的重点是宽带声压水平 (SPL) 和特定的杀手掩盖带.
主要成果:
- 滚上滚下渡轮对整个地区的宽带声压水平 (SPL) 贡献最大.
- 接下来是集装箱船,散货船,停泊货船和油轮的贡献.
- 渔业和休船只在关键的掩盖带中显示出显著的季节性贡献.
- 在研究区域的大部分地区,船舶产生的SPL超过了环境风力驱动的噪音超过10dB.
结论:
- 船舶活动是SRKW息地的水下噪音污染的主要驱动因素.
- 这些发现强调了人为噪声对海洋环境声学质量的重大影响.
- 针对船舶噪声的缓解策略对于SRKW恢复和海洋生态系统健康至关重要.
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