Lagrangian Structures in Very High-Frequency Radar Data and Optimal Pollution Timing
Lagrangian Structures in Very High-Frequency Radar Data and Optimal Pollution Timing
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甚高频雷达数据中的拉格朗日结构和最佳污染定时
DOI：
10.1063/1.1612209
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
J. Marsden
中科院分区：
文献类型：
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作者：
F. Lekien;C. Coulliette;J. Marsden
甚高频（VHF）雷达技术可绘制沿海沃茨表面附近的详细表面速度图。然而，在环境预测中使用测得的速度数据仍然是未经探索的。在本文中，我们揭示了一个引人注目的流动结构在沿海雷达观测沿着海岸的佛罗里达。这种结构控制着该区域释放的有机污染物或被动漂流物的扩散。我们计算的VHF雷达数据的李雅普诺夫指数，以确定最佳的释放窗口，在该窗口中，污染物被有效地平流远离海岸，我们表明，一个基于VHF雷达的污染释放计划，使用隐藏的流结构，减少了工业污染在沿海环境中的影响。
Very High-frequency (VHF) radar technology produces detailed surface velocity maps near the surface of coastal waters. The use of measured velocity data in environmental prediction, however, has remained unexplored. In this paper, we uncover a striking flow structure in coastal radar observations along the coast of Florida. This structure governs the spread of organic contaminants or passive drifters released in the area. We compute the Lyapunov exponents of the VHF radar data to determine optimal release windows in which contaminants are advected efficiently away from the coast and we show that a VHF radar-based pollution release scheme using the hidden flow structure reduces the effect of industrial pollution in the coastal environment.