The fine-structure of nearshore tidal and residual circulations revealed by H.F. radar surface current measurements
The fine-structure of nearshore tidal and residual circulations revealed by H.F. radar surface current measurements
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高频雷达表面电流测量揭示近岸潮汐和残余环流的精细结构
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发表时间：
1987
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通讯作者：
D. Prandle
中科院分区：
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作者：
D. Prandle
摘要 使用卢瑟福-阿普尔顿实验室（英国）开发的海洋表面流雷达（OSCR），获得了约 18 平方公里近岸区域内 84 个位置的 30 天天气每小时表面流矢量。对这些数据的潮汐分析表明，与主要 M2 成分相关的洋流平稳且有规律地扫过该地区，不受更精细地形特征的影响。此外，M2半长轴的振幅轮廓相互一致，精度优于0.5 cm s−1。这些数据的统计分析表明，OSCR 电流测量的标准误差小于 4 cm s−1。相比之下，主要的高次谐波成分 M4 显示出明显但有序的空间变化。将观测到的 M4 和 M2 分布联系起来，预计将成为一个有指导意义的建模问题，它将增进我们对浅水潮汐相互作用过程的了解。残余表面电流和...之间的标准关系
Abstract Using the Ocean Surface Current Radar (OSCR) developed by the Rutherford–Appleton Laboratory (UK), 30 days of synoptic hourly surface current vectors were obtained for 84 locations within a nearshore region some 18 kms square. Tidal analyses of these data show that the currents associated with the predominant M2 constituent sweep smoothly and regularly through the area, unaffected by the finer topographic features. Moreover, contours of the amplitude of the M2 semi-major axis are mutually consistent to a precision of better than 0.5 cm s−1. Statistical analyses of these data indicate that the standard error of OSCR current measurements is less than 4 cm s−1. By contrast the major higher harmonic constituent, M4, shows pronounced, but ordered, spatial variability. Relating the observed distributions for M4 and M2 is foreseen as an instructive modeling problem that should advance our knowledge of shallow water tidal interaction processes. Standard relationships between residual surface currents and...