Beach recovery from extreme storm activity during the 2013-14 winter along the Atlantic coast of Europe
Beach recovery from extreme storm activity during the 2013-14 winter along the Atlantic coast of Europe
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DOI：
10.1002/esp.4500
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发表时间：
2019-01-01
影响因子：
3.3
通讯作者：
Suanez, Serge
中科院分区：
文献类型：
--
作者：
Dodet, Guillaume;Castelle, Bruno;Suanez, Serge
2013- 2014年冬季的风暴序列使欧洲大西洋沿岸的许多海滩处于几十年来最严重的侵蚀状态。了解海滩如何从这种极端事件中恢复对沿海管理者来说至关重要，特别是考虑到气候变化可能导致区域风暴增加。在这里，我们分析了欧洲西海岸海滩十年代际形态变化的独特数据集，以调查2013-14年后的冬季恢复。我们发现，恢复特征具有地点特异性和多年际特征，其中一个研究海滩在2年后完全恢复，而其他海滩在4年后仅部分恢复。在恢复阶段，冬季波浪主要控制海滩恢复的时间尺度，因为强烈的冬季条件阻碍了恢复过程，而温和的冬季条件加速了恢复过程。这种年际变率与气候指数有很好的相关性。在暴露的海滩上，平衡模型在再现风暴后恢复方面显示出显著的技能，因此可以用于更详细地研究恢复过程。(c) 2018 John Wiley & Sons, Ltd.
The storm sequence of the 2013-14 winter left many beaches along the Atlantic coast of Europe in their most eroded state for decades. Understanding how beaches recover from such extreme events is essential for coastal managers, especially in light of potential regional increases in storminess due to climate change. Here we analyse a unique dataset of decadal beach morphological changes along the west coast of Europe to investigate the post-2013-14 winter recovery. We show that the recovery signature is site specific and multi-annual, with one studied beach fully recovered after 2 years, and the others only partially recovered after 4 years. During the recovery phase, winter waves primarily control the timescales of beach recovery, as energetic winter conditions stall the recovery process whereas moderate winter conditions accelerate it. This inter-annual variability is well correlated with climate indices. On exposed beaches, an equilibrium model showed significant skill in reproducing the post-storm recovery and thus can be used to investigate the recovery process in more detail. (c) 2018 John Wiley & Sons, Ltd.