ROLE OF WATER LEVEL IN STORM IMPACTS OF A HYPER-TIDAL COAST
ROLE OF WATER LEVEL IN STORM IMPACTS OF A HYPER-TIDAL COAST
复制标题
水位在超潮汐海岸风暴影响中的作用
DOI：
10.1142/9789811204487_0109
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
C. Winter
中科院分区：
文献类型：
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作者：
Dissanayake;J. Brown;P. Sibbertsen;C. Winter
对英国塞夫顿海岸高潮环境下的海滩/沙丘侵蚀进行了调查。根据波高和水位的变化，采用概率方法建立了一种新的风暴事件分类（Hs + TA = 2.4m）。利用沙丘侵蚀模型XBeach进行了数值模拟。使用不同的水位，波高和风暴持续时间的敏感性分析表明，水位占主导地位的海滩/沙丘侵蚀相比，波高在这个海岸。新的分类和正式的风暴定义（Hs = 2.5米）之间的风暴影响进行了比较模拟观察到的高强度风暴事件。与官方定义相比，HS和TA定义的风暴事件产生了更高的沙丘侵蚀。目前正在进行工作，以进一步验证使用HS和TA的风暴分类。
The storm impacted beach/dune erosion at the hyper-tidal coastal environment, Sefton coast, UK was investigated. A new storm event classification (Hs + TA = 2.4 m) was established based on the variation of wave height (Hs) and water level (TA) using probabilistic methods. Numerical simulations were carried out using the dune erosion model XBeach. Sensitivity analysis using different water levels, wave heights and storm durations indicated that water level dominates the beach/dune erosion compared to wave height on this coast. A comparison of storm impacts between the new classification and the official storm definition (Hs = 2.5 m) was carried out simulating an observed high severity storm event. The storm event defined by Hs and TA produced higher dune erosion compared with the official definition. Work is currently in progress to further validate the storm classification using Hs and TA.