风浪和涌浪分离方法的比较

李水清; 赵栋梁

风浪和涌浪分离方法的比较

中国海洋大学物理海洋研究所, 山东青岛 266100

基金项目: 国家自然科学基金(41076007);国家重点基础研究发展计划("973"计划)项目(2009CB421201)资助。

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出版历程
- 收稿日期: 2011-07-14
- 修回日期: 2011-08-09

Comparisons on partitioning techniques to identify wind-wave and swell

Institute of Physical Oceanography, Ocean University of China, Qingdao 266100, China

摘要

摘要: 海浪通常以风浪和涌浪混合的形式存在。文中利用模型试验和实测资料,对目前提出的一种二维谱风涌浪分离方法(2D法)和3种一维谱风涌浪分离方法(PM法、WH法、JP法)进行了检验,分析发现:2D法给出的结果整体而言最为可靠,与2D法相比,PM法明显高估了风浪成分,WH法低风速时高估了风浪,高风速时跟2D法比较接近,而JP法在整体上高估了风浪成分。通过调整分割频率的比例系数,改进了PM法,改进后的PM法给出的分离结果与2D法最为一致。
- 风浪 /
- 涌浪 /
- 分离 /
- 海浪 /
- 频谱
Abstract: The ocean waves are generally a mixer of wind-wave and swell. In this paper,a two-dimensional(2D) wave spectrum partitioning techniques and three one-dimensional(1D) wave spectrum partitioning techniques (i.e. PM technique, WH technique, JP technique) used to identify wind-wave and swell are examined based on the model results and the observations, it is shown that the 2D technique could provide most reliable results; compared with 2D technique, PM technique obviously overestimates the wind-wave components, WH technique overestimates the energy of wind-wave at low wind speed, while shows better agreement with 2D technique at higher winds, overestimations also occur in the case of JP technique; PM technique is modified to show better agreement with the 2D scheme, it is found that the improved PM technique provides most consistent results with the 2D scheme among the 1D techniques.
- wind-wave /
- swell /
- partitioning /
- wave spectrum /

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参考文献(20)

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