Modeling regional sediment transport and shoreline response in the vicinity of tidal inlets on the L
Modeling regional sediment transport and shoreline response in the vicinity of tidal inlets on the L
复制标题
模拟 L 潮汐入口附近的区域沉积物输送和海岸线响应
DOI：
10.1016/j.coastaleng.2011.03.003
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
P. T. Nam
中科院分区：
文献类型：
--
作者：
L. X. Hoan;H. Hanson;M. Larson;P. T. Nam
基于单线理论和水库相似法，建立了一个新的潮汐汊道附近区域泥沙输移和岸线响应的数值模型。考虑了沙绕岸和沙坝、浅滩对波浪作用的遮挡作用。该模型被应用到独特的现场数据从美国长岛的南海岸，包括入口打开和关闭。模拟区域从Montauk Point延伸到Fire Island Inlet，包括Shinnecock和Moriches Inlet。一个20年的时间序列的后报波数据在三个站沿着海岸被用作输入数据的模式。入口浅滩和沙洲的储沙能力是根据测量的入口横截面积以及入口周围地区的综合水深测量估计的。几种类型的沉积物源和汇的代表，包括海滩填充，丁坝系统，码头阻塞，进口绕过，和洪水浅滩和落潮浅滩喂养。对年度净沿岸输运率在文献中报道的模型模拟进行了验证，测得的海岸线，并记录在洪水和退潮浅滩复合体的沉积物体积。总体而言，模型模拟与实测数据吻合良好。
A new numerical model was developed to simulate regional sediment transport and shoreline response in the vicinity of tidal inlets based on the one-line theory combined with the reservoir analogy approach for volumetric evolution of inlet shoals. Sand bypassing onshore and sheltering effects on wave action from the inlet bar and shoals were taken into account. The model was applied to unique field data from the south coast of Long Island, United States, including inlet opening and closure. The simulation area extended from Montauk Point to Fire Island Inlet, including Shinnecock and Moriches Inlets. A 20-year long time series of hindcast wave data at three stations along the coast were used as input data to the model. The capacity of the inlet shoals and bars to store sand was estimated based on measured cross-sectional areas of the inlets as well as on comprehensive bathymetric surveys of the areas around the inlet. Several types of sediment sources and sinks were represented, including beach fills, groin systems, jetty blocking, inlet bypassing, and flood shoal and ebb shoal feeding. The model simulations were validated against annual net longshore transport rates reported in the literature, measured shorelines, and recorded sediment volumes in the flood and ebb shoal complexes. Overall, the model simulations were in good agreement with the measured data.