Application à la zone au large du Finistère d'une méthode d'estimation statistique des courants de houle au voisinage du fond
Application à la zone au large du Finistère d'une méthode d'estimation statistique des courants de houle au voisinage du fond
复制标题
应用在大型区域的Finistère dune 估算统计方法中
DOI：
10.1051/lhb/1975036
复制
发表时间：
1975
影响因子：
0.8
通讯作者：
A. Cavanie
中科院分区：
文献类型：
--
作者：
A. Cavanie
一种估算海床附近海流的统计方法在菲尼斯特尔海岸附近的应用--波谱能量分布由四种情况提供：b)法国奥尼斯先生的USAC模式以海床附近的压力分布为输入。工作面上的运动光谱仪提供了模型。然后在靠近海床的地方掀起10股海流。本研究是基于1970年至1974年的四次DSA检查。被称为布列塔尼点(47‘，30 N.5“西经)的数据。这些数据与40~50 N和O~(-10)M I~(-10)之间的船舶观测资料有很好的相关性。。。在图2的威布尔纸上绘制的是根据USA5数据计算的Ui i的累积概率值(U，3是100米深度处最大电流值的上三分之一的平均值)。实验中的C-I-I统计量似乎非常符合威布尔定律。它们还表明，0.7m/S洋流平均每年发生一次。这项研究的主要目的是提供海流的数量级估计。相应地。反射、绕射等因素。床面摩擦。忽略了由于深度减小而造成的幅度损失或增益。评估的范围可能是在一个冬季期间在一个特别感兴趣的地区进行模型校准试验。
Application to an area off the Finistere coast of a statistical method of estimating wave currents near the sea bed -The spectral energy distribution of >ea wavec is supplied four tiniei a da) b) the French Mrteorological Onice's UsAc mode1 uiing the pressure distribution aber the it lantic as input. The wrfacc-motion spectrurn furni\hed bq the model mai. then k uaed 10 ebtimate the local current bpecrrum near the sea bed. The present study is bahrd on four qears (1970-1974) of DSA. data for the ro-called Brittany point (47',30 N. 5" WI. The data correlates reawnably well with observatii~ns made from ships in the region Iying between 40 5 0 N and O -10 M i i-ipuir I ) . . . Plotted on Weibull paper in Figure 2 are the cumulative probability values of U I i as calculated from the USA5 data ( U , 3 is the mean of the upper third of maximum current values at a depth of 100 m). The experimental C i i statistics appear to obey Weibull'~ law quite closely. They also show that 0.7 m/s currents occur on average once a year. The principal objective of the study was to provide orderof-magnitude estimates of currents. Accordingly. factors tuch as reflection, diffraction. bed friction. and loss o r gain of amplitude due to reduced depth were neglected. The extent t i > uhich thii i i juitified might be as\e\..ed h) carrking out model calibration tests in an area of particular interest in the course of one winter.