Optical Imaging of Nearshore Current and Shear Wave Dynamics

0117396 Holman/OSU该项目将开发和测试从视频图像中提取近岸区域跨岸和沿岸流的定量数据的技术。其动机之一是获得更好的关于近岸地区剪切波的数据。视频分析算法的结果将与同一站点的现场数据进行比较。视频和现场数据都是在北卡罗来纳州达克的一个早期实验中收集的。在研究底部耗散和水平混合对这些波的影响时，将把从10个不同地点的视频数据得到的海流测量结果合并到有限振幅横波的数值模型中。

0117396Holman/OSUThis project will develop and test techniques for extracting quantitative data on cross-shore and along-shore currents in the near-shore zone from video images. One of the motivations is to obtain better data on shear waves in the near-shore zone. Results of the video analysis algorithms will be compared with in situ data from the same site. Both video and in situ data were collected during an earlier experiment at Duck, N. Carolina. Measurements of currents derived from the video data at ten different sites will be incorporated into a numerical model of finite-amplitude shear waves in a study of the effects of bottom dissipation and horizontal mixing on these waves.