利用海洋测量数据和模型预测波弗特海的声波到达时间。

IF 1.2 Q3 ACOUSTICS
Jessica B Desrochers, Lora J Van Uffelen, Sarah E Webster
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引用次数: 0

摘要

由于存在被称为波弗特导管的次表层导管,波弗特海的声波传播对上层海洋声速结构特别敏感。将基于现有北极模型的声学预测与基于 2017 年夏季 Seaglider 潜水器收集的现场数据的预测进行比较后发现,导管的强度、深度和数量存在差异,这凸显了现场数据的重要性。这些差异对被称为反向几何扩散的声学时间前沿较晚、较强烈的部分有重大影响,其中低阶模式在最终截止之前到达。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Acoustic arrival predictions using oceanographic measurements and models in the Beaufort Sea.

Acoustic propagation in the Beaufort Sea is particularly sensitive to upper-ocean sound-speed structure due to the presence of a subsurface duct known as the Beaufort duct. Comparisons of acoustic predictions based on existing Arctic models with predictions based on in situ data collected by Seaglider vehicles in the summer of 2017 show differences in the strength, depth, and number of ducts, highlighting the importance of in situ data. These differences have a significant effect on the later, more intense portion of the acoustic time front referred to as reverse geometric dispersion, where lower-order modes arrive prior to the final cutoff.

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