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首页> 外文期刊>Ocean & coastal management >Evaluating the geomorphic response from sand fences on dunes impacted by hurricanes
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Evaluating the geomorphic response from sand fences on dunes impacted by hurricanes

机译：评估来自飓风影响的沙丘上的沙子围栏的几何反应

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摘要

The coastal zone is morphologically dynamic and a range of engineering practices are used to stabilize it. The dune system serves as the first line of defense against storms and rising sea levels. Sand fences on dunes are one popular and economical restorative engineering alternative. This study evaluates the geomorphic response of dunes with and without sand fences resulting from the impact of high energy events, specifically Hurricanes Florence and Michael, which impacted South Carolina, United States in 2018. Innovative cost-effective field methods were applied to calculate dune volumes on a mechanical dune. Measurements compared a site with eleven sand fences and an unmodified control site. Dune volume decreased after Hurricane Florence for the fenced and control sites and increased after Hurricane Michael for the fenced site. There was differential geomorphic change post-storm between the control and fenced sites. Results support that sand fences are resilient under high wind conditions and are an effective strategy to aid in dune recovery and growth, suggesting that they can be installed prior to the storm season rather than being reserved as a post-storm recovery technique.
机译：沿海地区是形态学上的动态，一系列工程实践用于稳定它。沙丘系统作为暴风雨和海平面上升的第一行。沙丘上的沙栅是一种流行且经济的恢复工程替代品。本研究评估了沙丘的几何反应，没有砂栅栏，这是由于高能量事件的影响，特别是佛罗伦萨和迈克尔影响，这些佛罗伦萨和迈克尔在2018年受到影响美国的南卡罗来纳州。采用创新的成本效益现场方法来计算沙丘量在机械沙丘上。测量与11个砂栅栏和未修改的控制部位进行了比较。在围栏和控制部位飓风弗伦斯飓风弗伦斯后，沙丘体积减少，围绕围栏围栏的迈克尔飓风后增加。在控制和围栏地点之间存在差异的地貌变化暴风雨。结果支撑在高风条件下，砂栅是有效的，有效的策略，有助于促进沙丘回收和增长，这表明它们可以在风暴季节之前安装，而不是作为暴风雨后恢复技术安装。

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