Flooding Along the Fence.
Flooding Along the Fence.
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沿着栅栏洪水泛滥。
DOI：
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发表时间：
2022
影响因子：
0.5
通讯作者：
G. Herczeg
中科院分区：
文献类型：
--
作者：
T. Urszán;L. Garamszegi;Gergely Nagy;A. Hettyey;J. Török;G. Herczeg
在2010年、2013年和2014年的夏天，沿着美国德克萨斯州的鹰帕斯-墨西哥边境经历了三次大洪水事件，淹没了沿着格兰德河洪泛区的边界围栏。鉴于边界围栏的位置，最初的修建被认为影响了社会经济地位较低的居民，并加剧了沿着格兰德河的洪水。我检查洪水使用Nays 2DFlood模型的围栏和非围栏条件下的洪水范围，然后从对方减去结果，以确定边界围栏的影响。我发现，围栏和非围栏条件下的水深没有不同，但围栏起着重要的作用，在围栏线降低水流速度和增加水流速度在围栏间隙和洪水边缘。根据当地居民在洪水事件中的实地观察，这种速度的降低可以捡起碎片并将其困在围栏上，延长洪水淹没时间，从而延迟洪水消退。此外，这些条件可能导致人口密集地区附近的危险水流速度条件。
In the summers of 2010, 2013 and 2014, Eagle Pass, Texas along the U.S.-Mexico border experienced three large flood events that inundated the border fence along the Rio Grande floodplain. The initial construction of the border fence is thought to have impacted lower socio-economic residents given its location and exacerbated flooding along the Rio Grande. I examine inundation using Nays2DFlood to model flooding extents in fence and non-fence conditions Results are then subtracted from each other to determine the impact of the border fence. I found that water depths do not differ between fence and non-fence conditions, but the fence plays a significant role in decreasing water velocities at the fence line and increasing water velocities at fence gaps and flood margins. Given on-the-ground observations by residents during flood events, this decrease in velocity can pick up debris and trap it against the fence, prolonging flood inundation times and thus delaying flood recessional flows. In addition, these conditions may lead to dangerous water velocity conditions near populated areas.