在浮动冰盖中模拟声波导体,并具有垂直温度配置文件
Dingyi Ma1, Yuxiang Zhang2,3, Chao Sun1
1School of Marine Science and Technology, Northwestern Polytechnical University, Xi' an, 710000, China.
The Journal of the Acoustical Society of America
|May 1, 2025
概括
北极海冰的声学特性随温度而变化. 一个新的模型几乎对冰层进行了分层,以准确预测声音传播速度,改进了更简单的模型.
科学领域:
- 声学 声学 在声学方面
- 地质物理学 地质物理学
- 材料科学 材料科学 材料科学
背景情况:
- 北极海冰通常被模拟为声学分析的统一层.
- 环境因素,特别是温度,随着时间和空间的推移,显著改变了海冰的声学特性.
研究的目的:
- 开发一个更准确的北极海冰声学模型,解释温度诱导的变化.
- 为了研究垂直温度梯度对海冰中的声音传播速度的影响.
主要方法:
- 使用虚拟分层技术来表示冰中的温度变化.
- 使用实验数据将传播速度与温度联系起来,创建了一个经验模型.
- 开发了一个嵌套矩阵方法,用虚拟的冰子层来建模空气-冰-水系统.
主要成果:
- 虚拟分层模型准确地捕获了由于温度差异的声音传播变化.
- 拟议的模型表现优于基于有效介质理论的传统单层模型.
- 对分层协议 (相同厚度与相同速度变化) 的分析提供了对最佳模型配置的见解.
结论:
- 环境因素,特别是温度,对于准确的北极海冰声学建模至关重要.
- 虚拟分层是将垂直温度变化纳入声学波导模型的一个有效方法.
- 未来的工作应该考虑额外的复杂性,如雪层,以提高模型保真度.
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