Simple model of cross-shore sediment transport rate for berm formation and erosion
Simple model of cross-shore sediment transport rate for berm formation and erosion
复制标题
护堤形成和侵蚀的跨岸沉积物输送速率的简单模型
DOI：
10.1142/9789814277426_0146
复制
发表时间：
2009
影响因子：
--
通讯作者：
Y. Kuriyama
中科院分区：
文献类型：
--
作者：
Takayuki Suzuki;Y. Kuriyama
利用2.5年的海滩剖面资料，研究了护堤形成和侵蚀过程中海岸输沙率的空间分布。向海距离通过调查区域的距离进行归一化，该距离为从最大波浪爬高位置（陆上边界）到平均潮位时的海岸线位置（海上边界）的距离。利用近岸波浪能通量模拟了护堤形成过程中的越岸输沙率空间分布，利用护堤高度模拟了护堤冲刷过程中的侵蚀率空间分布。应用该模型计算了一个月的海滩剖面变化。数值模拟结果与实测资料的对比表明，该模型能较好地定性预测护堤形成和冲刷过程中的海滩剖面变化。
A 2.5-year data set of beach profile was used to examine the spatial distributions of cross-shore sediment transport rates for berm formation and erosion. The seaward distance,, is normalized by the distance of the investigation area, which is from the maximum wave run-up position, the onshore boundary, to the shoreline position at the mean tide level, the offshore boundary. The spatial distribution of the cross-shore sediment transport rate for berm formation was modeled with the offshore wave energy flux, and the distribution for berm erosion was modeled with the berm height. The model was applied for the calculation of a one-month beach profile change. The comparison between the numerical results and the observed data showed that the model well predicts the beach profile changes of the berm formation and erosion in a qualitative sense.