On the Expected Structure of Extreme Waves in a Gaussian Sea. Part II: SWADE Scanning Radar Altimeter Measurements
On the Expected Structure of Extreme Waves in a Gaussian Sea. Part II: SWADE Scanning Radar Altimeter Measurements
复制标题
关于高斯海极端波浪的预期结构。
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
E. Walsh
中科院分区：
文献类型：
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作者：
O. Phillips;D. Gu;E. Walsh
在上一篇论文（Phillips等人）中摘要开发了一个近似理论，该理论预测了随机海中极端波的预期配置（或极端波的平均配置）与时空自动相关函数成正比整个波场的表面位移。通过检查在四个不同的海洋状态下进行的扫描雷达高度计测量值，包括单峰成熟的波场，短得分，风产生的海洋越野膨胀，非常广泛的方向光谱，以及提取限制的限制，可以测试该结果。风与对方膨胀。在这些中，每个空间自相关函数直接从SRA数据中找到。选择了每个数据集中的最高波，并且相对于波峰的平均配置平均。在每种情况下，这些平均配置都与自相关函数一致。
Abstract In a previous paper (Phillips et al.) an approximate theory was developed that predicted that the expected configuration of extreme waves in a random sea (or the average configuration of an ensemble of extreme waves) is proportional to the space-time autocorrelation function of the surface displacement of the wave field as a whole. This result is tested by examination of scanning radar altimeter measurements made during SWADE in four different sea states, including a unimodal mature wave field, a short fetch, a wind-generated sea crossing swell, a very broad directional spectrum, and a fetch-limited wind sea with opposing swell. In each of these, the spatial autocorrelation function was found directly from the SRA data. The highest waves in each dataset were selected and their configurations averaged with respect to the crest. These averaged configurations were in each case found to be consistent with the autocorrelation function.