Beach response to consecutive extreme storms using LiDAR along the SW coast of England
Beach response to consecutive extreme storms using LiDAR along the SW coast of England
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DOI：
10.2112/si75-211.1
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发表时间：
2016-08
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影响因子：
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通讯作者：
Olivier Burvingt;G. Masselink;P. Russell;T. Scott
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作者：
Olivier Burvingt;G. Masselink;P. Russell;T. Scott
[摘要]伯温特，p . p .；Masselink， G., Russell， P.和Scott， T. 2016。海滩对连续极端风暴的响应使用激光雷达沿英格兰西南海岸。作者：A. villa - concejo；布鲁斯,大肠;Kennedy, d.m.和McCarroll， R.J.（编），第14届国际沿海研讨会论文集（悉尼，澳大利亚）。海岸研究杂志，特刊，第75期，第1052 - 1056页。Coconut Creek (Florida), ISSN 0749-0208。在英格兰西南海岸，2013年至2014年的冬季是过去60年来最活跃的时期，记录的浪高超过10米的风暴超过22次。美国环境署在整个西南海岸线进行了风暴前和风暴后的空中激光雷达调查。从该数据集中共选择了157个海滩，并通过处理激光雷达数据计算和研究了风暴期间的形态变化。该分析显示了海滩对极端风暴的不同反应，并强调了涉及沉积物运输的两种机制。结果表明，北海岸暴露在主要风暴潮下的海滩受到侵蚀，沉积物在海岸间的运输过程中流失。相反，在南海岸的海滩上，波浪走向更加倾斜，沉积物主要沿着海岸运输，导致海滩旋转。
ABSTRACT Burvingt, O.J.P.; Masselink, G., Russell, P., and Scott, T. 2016. Beach response to consecutive extreme storms using LiDAR along the SW coast of England. In: Vila-Concejo, A.; Bruce, E.; Kennedy, D.M., and McCarroll, R.J. (eds.), Proceedings of the 14th International Coastal Symposium (Sydney, Australia). Journal of Coastal Research, Special Issue, No. 75, pp. 1052 - 1056. Coconut Creek (Florida), ISSN 0749-0208. On the south west coast of England, the 2013/14 winter has been the most energetic period over the past 60 years, counting over 22 storms with recorded wave heights exceeding 10 meters. Pre- and post-storm aerial LiDAR surveys have been carried out by the Environmental Agency along the entire SW coastline. A total of 157 beaches have been selected from this dataset and morphological changes over the stormy period have been calculated and studied by processing the LiDAR data. This analysis shows the varying response of the beaches to the extreme storms and highlights two mechanisms involved in sediment transport. The results show that North coast beaches exposed to the main storm waves eroded, losing sediment offshore by cross-shore transport processes. Conversely, on the South coast beaches, where wave approach was more oblique, sediment was mainly transported along-shore resulting in beach rotation.