Hydrodynamical and morphological patterns of a sandy coast with a beach nourishment suffering from a storm surge
Hydrodynamical and morphological patterns of a sandy coast with a beach nourishment suffering from a storm surge
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受风暴潮影响海滩营养的沙质海岸的水动力和形态模式
DOI：
10.1080/21664250.2021.1992997
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发表时间：
2021-11
影响因子：
2.4
通讯作者：
Xin Cong
中科院分区：
文献类型：
--
作者：
Xuejian Han;Cuiping Kuang;Lei Zhu;Lixin Gong;Xin Cong
摘要2017年8月，秦皇岛东部山海关海滩受热带气旋艾玛的影响，遭遇风暴潮。为了研究风暴潮的水动力过程和海滩对风暴潮的形态响应，采用了基于Delft3D的波流耦合模型和基于X海滩的内部形态动力学模型，并与实测资料进行了对比验证。模拟结果表明，风暴期间山海关海滩的风暴流矢量和波浪矢量随风矢量顺时针旋转。当风速达到最大值时，渤海北部的风暴潮为正，南部为负。在研究区域，风激涌浪对风暴潮的贡献最大，而在远离碎波带的区域，气压激涌浪对风暴潮的贡献次之，波浪激涌浪的影响可以忽略不计。风暴影响区为冲流区，风暴将海滩前滩的泥沙向外海输送，而在恢复期，侵蚀沙则被弱波浪向岸上输送。
ABSTRACT The beach of Shanhai Pass in the eastern Qinhuangdao, China, which was nourished in August 2017, suffered from a storm surge induced by the tropical cyclone Ampil in July 2018. In order to investigate the storm surge hydrodynamical process and the morphological response of the beach to the storm, an outer wave-current coupled model based on Delft3D and an inner morphodynamical model based on Xbeach are applied and well-validated against the measurements. The model results show that the storm-induced current vector and the wave vector at the Shanhai Pass beach rotates clockwise corresponding with the wind vector during the storm. The storm surge is positive in the north of the Bohai Sea and negative in the south when the wind speed reaches the maximum. The wind-induced surge makes the dominant contribution to the total storm surge at the study area and the air-pressure-induced surge is the second factor for far away area from the surf zone, where the wave-induced surge is negligible. The storm impact regime is determined as swash regime, and the sand of the beach foreshore is transported offshore by the storm, however, the eroded sand is transported onshore by the mild waves during the recovery period.
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影响因子：
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作者：
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DOI：
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作者：
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DOI：
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发表时间：
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期刊：
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影响因子：
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作者：
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通讯作者：
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