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新英格兰海底山区的声学特征

Robert T Taylor¹, Megan S Ballard¹, John W Hartman¹

¹Applied Research Laboratories, The University of Texas at Austin, Austin, Texas 78758, USA.

The Journal of the Acoustical Society of America

|April 9, 2025

概括

海洋学前沿,就像海湾流一样,创造了独特的声学环境. 阿戈漂浮数据揭示了受水体影响的声学趋势,突出了捕捉这些特征的模型局限性.

科学领域:

海洋学海洋学海洋学
声学声学在声学方面
数据科学数据科学数据科学

背景情况:

新英格兰海底山区的特点是斜坡海和萨尔加索海水之间的复杂相互作用,受到海湾流的影响.
在海湾流的正面边界之间存在声速配置和声学传播路径的显著差异.

研究的目的:

通过使用历史温度资料数据,调查新英格兰海底山地区的声学趋势.
分析不同水体 (斜坡海,萨尔加索海,湾流) 如何影响声学传播.
将观测声学数据与数值海洋模型预测进行比较.

主要方法:

利用了来自Argo浮动程序的历史温度资料数据.
采用聚类算法将数据分类为三种主要的水温概况类型.
计算的声学指标,包括循环距离和传播路径类型,以评估深度依赖的特征.

主要成果:

确定了与斜坡海,湾流和萨尔加索海环境相关的独特声学趋势.
在观测Argo数据中发现了空间时空声学特征,这些特征在混合坐标海洋模型 (HyCOM) 预测中缺席.
证明模拟温度场中的小偏差可以掩盖常见的声学传播特征.

结论:

阿戈漂浮数据为海洋学前线塑造的声学环境提供了宝贵的见解.
数字海洋模型可能无法完全捕捉观测数据中存在的复杂声学特征.
对温度场的准确建模对于预测动态海洋区域的声学传播至关重要.

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相关概念视频

Primary Production

Primary Production

The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.