使用SWOT任务测量最大的海洋波浪
Fabrice Ardhuin1, Taina Postec1, Mickael Accensi1
1Université de Brest, CNRS, Ifremer, Institut de Recherche pour le Développement, Laboratoire d'Océanographie Physique et Spatiale (LOPS), Institut Universitaire Européen de la Mer, Plouzané F-29280, France.
概括
科学家们使用卫星数据来测量海洋风暴中的长波周期. 这揭示了极端波浪是如何形成的,并可以改善海洋结构设计和沿海动态建模.
科学领域:
- 海洋学 海洋学 海洋学
- 波动力学 波动力学 波动力学
- 卫星遥感 卫星遥感 卫星遥感
背景情况:
- 海洋波对海洋结构,空海流和沿海过程至关重要.
- 极端波浪事件由于测量局限性,特别是波浪周期,人们对其了解甚微.
研究的目的:
- 研究海洋风暴中长波周期的产生机制.
- 利用卫星观测到的波浪来推断风暴波的特征.
主要方法:
- 使用地表水和海洋拓 (SWOT) 卫星海平面测量对波浪的分析.
- 开发一个更新的参数波谱模型,与SWOT数据保持一致.
主要成果:
- 波浪波长和高度的观测模式与短到长周期波的能量转移一致.
- 与现有模型相比,拟议的波谱模型在较长的时间内减少能量.
- 估计的风暴波周期从膨胀高度开始,最大记录的峰值周期为20.2秒,波高为19.7米.
结论:
- SWOT数据成功地揭示了风暴中的长波周期及其生成.
- 这些发现提供了改进的波谱模型和估计极端波浪参数的方法.
- 应用范围包括沿海动力学,海洋工程和地震学.
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