Observations of Surface Wave–Current Interaction
Observations of Surface Wave–Current Interaction
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DOI：
10.1175/jpo-d-16-0108.1
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发表时间：
2017-03
影响因子：
3.5
通讯作者：
Leonel Romero;L. Lenain;W. Melville
中科院分区：
文献类型：
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作者：
Leonel Romero;L. Lenain;W. Melville
波-流相互作用会导致海面波场的显著不均匀，包括频谱调制、波浪破碎率和海浪统计。这项研究提供了来自两个实验的新的空中观测：1)高分辨率海-气相互作用(HIRES)实验，测量了加利福尼亚州北部海岸外的一股上升流；2)墨西哥湾的一个实验，测量了与环流和相关涡流相互作用的波。由于这两个地点的相互作用，显著的波浪高度和斜率的差异高达30%，而白浪覆盖率的差异超过一个数量级。白帽覆盖率与光谱矩呈良好相关，与方向扩散呈负相关，与饱和度呈正相关。在墨西哥湾测量的面波统计数据，包括波峰高度和单位表面积的波峰长度，与第二个波峰高度和波峰长度显示出很好的一致性。
AbstractWave–current interaction can result in significant inhomogeneities of the ocean surface wave field, including modulation of the spectrum, wave breaking rates, and wave statistics. This study presents novel airborne observations from two experiments: 1) the High-Resolution Air–Sea Interaction (HiRes) experiment, with measurements across an upwelling jet off the coast of Northern California, and 2) an experiment in the Gulf of Mexico with measurements of waves interacting with the Loop Current and associated eddies. The significant wave height and slope varies by up to 30% because of these interactions at both sites, whereas whitecap coverage varies by more than an order of magnitude. Whitecap coverage is well correlated with spectral moments, negatively correlated with the directional spreading, and positively correlated with the saturation. Surface wave statistics measured in the Gulf of Mexico, including wave crest heights and lengths of crests per unit surface area, show good agreement with seco...