Statistical simulation of wave climate and extreme beach erosion
Statistical simulation of wave climate and extreme beach erosion
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DOI：
10.1016/j.coastaleng.2007.12.003
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发表时间：
2008-05-01
影响因子：
4.4
通讯作者：
Ranasinghe, R.
中科院分区：
文献类型：
--
作者：
Callaghan, D. P.;Nielsen, P.;Ranasinghe, R.
最近的发展，在极端值建模已被用来制定一个框架，以确定海岸侵蚀危害的桑迪海岸线。该框架定量再现极端海滩侵蚀量从现场测量在Narrabeen海滩，澳大利亚。这一令人鼓舞的发现是使用Kriebel和Dean的[Kriebel，D.L.还有迪恩，R.G. 1993.时变海滩剖面响应的褶积方法水道，港口，海岸和海洋工程杂志，119（2）：204-226。简单海滩冲淤模型。该方法包括所有基本侵蚀变量之间的联合概率津贴，包括波高，周期和方向，事件持续时间，潮汐异常和事件间隔。提出了一种新的波高与周期关系式。它包括物理波陡限制。事件分组，其中显着更多的侵蚀可以发生从两个紧密间隔的风暴处理时间模拟合成波气候和由此产生的海滩侵蚀和增生。(C)2007 Elsevier B. V.保留所有权利。
Recent developments in extreme values modelling have been used to develop a framework for determining the coastal erosion hazard on sandy coastlines. This framework quantitatively reproduced the extreme beach erosion volumes obtained from field measurements at Narrabeen Beach, Australia. This encouraging finding was achieved using Kriebel and Dean's [Kriebel, D.L. and Dean, R.G., 1993. Convolution method for time-dependent beach profile response. Journal of Waterway, Port, Coastal and Ocean Engineering, 119(2): 204-226.] simple beach erosion and accretion model. The method includes allowances for joint probability between all basic erosion variates including; wave height, period and direction, event duration, tidal anomalies and event spacing. A new formulation for the dependency between wave height and period has been developed. It includes the physical wave steepness limitation. Event grouping, where significantly more erosion can occur from two closely spaced storms is handled by temporally simulating the synthetic wave climate and the resulting beach erosion and accretion. (C) 2007 Elsevier B.V. All rights reserved.