远程传感和气候数据用于Al-Ain (阿联) 的洪水影响评估
Mohand Bersi1, Hakim Saibi2, Kamal Abdelrahman3
1Geo-Environment Laboratory, Department of Geology, Faculty of Earth Sciences and Country Planning, University of Sciences and Technology Houari Boumediene (USTHB), 16111, Bab Ezzouar, Algiers, Algeria.
Scientific reports
|July 18, 2025
概括
阿尔艾因市在2024年4月因创纪录的降雨而经历了极端的突然洪水. 地理空间分析绘制了洪水的范围和深度,揭示了城市地区的高风险,并为弹性规划提供了信息.
科学领域:
- 水文学 水文学
- 遥感 遥感 遥感 遥感
- 地理空间分析的研究.
背景情况:
- 2024年4月16日,阿联阿尔艾因市发生了创纪录的暴雨,几小时内降雨量超过250毫米.
- 这一事件代表了该地区记录的最极端的水气候事件之一,突出了干旱环境的脆弱性.
研究的目的:
- 为了对艾尔艾因市发生的极端突发洪水事件进行详细的地理空间评估.
- 使用集成数据源量化洪水范围,深度和影响.
- 为了证明快速地缘空间分析对应急响应和城市弹性规划的有用性.
主要方法:
- 使用 Sentinel-2 光学卫星图像获得了高峰降雨后12小时的高分辨率洪水绘图.
- 应用了水指数 (ITW) 光谱指数,以改进水洪水的检测.
- 集成ITW与来自16个站的气象数据和数字海拔模型进行综合分析.
主要成果:
- 在洪水范围和地形学脆弱性之间发现了强烈的相关性.
- 水深估计确定了关键的洪水区,像Rowdah这样的城市地区的水深超过8米.
- 地质信息系统分析强调了高风险地区,包括运输网络和非正式的防洪系统,表明了基础设施和土地利用的影响.
结论:
- 这项研究强调了干旱地区极端突然洪水的风险不断升级.
- 快速,多来源的地理空间分析对于有效应对紧急情况和加强对水气候事件的城市弹性至关重要.
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