Characteristics of coastal erosion geometry under regular and irregular waves
Characteristics of coastal erosion geometry under regular and irregular waves
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DOI：
10.1016/s0029-8018(03)00011-8
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发表时间：
2003-09
影响因子：
5
通讯作者：
K. Günaydın;M. Kabdaşli
中科院分区：
文献类型：
--
作者：
K. Günaydın;M. Kabdaşli
在实验室河道中进行了规则波和不规则波作用下海岸侵蚀的实验研究。本研究选用天然沙滩砂，中等直径0.35 mm，比重2.63。模型试验选取1:5初始滩坡。在初始平坦的海滩上产生不同的波浪群，测量侵蚀长度、侵蚀深度、最大侵蚀点位置和总侵蚀面积等海岸侵蚀几何特征。控制海岸侵蚀的最重要参数是通过使用早期的调查和实验结果来评估的。利用π理论将这些参数表示为一个无量纲群。通过对纯规则波、纯不规则波和规则-不规则波的回归分析，提出了海岸侵蚀几何特征与无量纲群之间的经验关系。对用于定义海岸侵蚀几何特征的参数进行了评估，并给出了这些参数的某些比率的恒定值。
An experimental investigation of coastal erosion generated by the action of regular and irregular waves was carried out in laboratory channels. Natural beach sand, with medium diameter of 0.35 mm and specific gravity of 2.63, was used in this study. A 1:5 initial beach slope was selected for the model tests. Different wave groups were generated over the initially flat beach, and the characteristics of coastal erosion geometry such as erosion lengths, erosion depths, location of maximum erosion point, and total erosion areas were measured. The most important parameters governing coastal erosion were evaluated by using earlier investigations and experimental results. These parameters were expressed as a dimensionless group by using π theory. The empirical relationships between the geometric characteristics of coastal erosion and the dimensionless group are proposed through regression analysis for pure regular waves, pure irregular waves, and regular-irregular waves. The parameters, which were used to define geometric characteristics of coastal erosion, were evaluated and some ratios of these parameters gave a constant value.