Observation of Wave Energy Evolution in Coastal Areas Using HF Radar
Observation of Wave Energy Evolution in Coastal Areas Using HF Radar
复制标题
利用高频雷达观测沿海地区波浪能演化
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
B. Haus
中科院分区：
文献类型：
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作者：
R. Ramos;H. Graber;B. Haus
摘要研究了相控阵高频雷达系统在不同风暴情景和海岸配置下对波能空间分布进行采样的能力。首先，对D. E. Barrick从后向散射多普勒光谱中提取有效波高Hs的方法进行了校准，随后用三个不同的现场实验中收集的七个不同浮标/测量站的数据进行了测试（以评估偏差和不确定性）。之后，Hs观测获得选定的采样位置内的雷达有效域（在所有的实验），和滤波技术的基础上小波变换的特性和分解。通过将这些估计值与独立校准的波传播模型的结果进行比较，评估了过滤后的雷达观测值的准确性。结果表明，高频雷达能准确地探测到不同风暴事件引起的能量场。过滤技术最大限度地减少了贡献。
Abstract The capability of phased-array HF radar systems to sample the spatial distribution of wave energy is investigated in different storm scenarios and coastal configurations. First, a formulation introduced by D. E. Barrick to extract significant wave height Hs from backscatter Doppler spectra was calibrated and subsequently tested (to assess bias and uncertainty) with data from seven different buoy/gauge stations collected during three different field experiments. Afterward, Hs observations were obtained for selected sampling locations within the radar effective domain (in all experiments), and a filtering technique based on wavelet transform characterization and decomposition was applied. The accuracy of the filtered radar-derived observations was assessed by comparing these estimates to results from independently calibrated wave propagation models. It was found that the HF radar accurately measured the energy field induced by different storm events. The filtering technique minimized the contributi...