Detection of flood-hazard-prone zones using GIS modeling and AHP method in urban areas: the case of Amman Governorate

Pub Date : 2023-06-28 DOI:10.12775/bgeo-2023-0001
Noah Al-Sababhah
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Abstract

The aim of this study is to attempt a creative mapping of areas at risk of floods in Amman, using the Analytic Hierarchy Process (AHP) Method and GIS Modeling. The method (AHP) involves a weighting of a number of factors adopted by comparison. The main factors considered in this study were Elevation, Slope, Rainfall Intensity, Runoff, Land Use/Land Cover, Flow Accumulation, and SPI; these were reclassified and weighted to map the levels of flood hazards in the study area. Each factor/criteria was weighted and assigned a rank or score by using the Pairwise Comparison method to enable researchers to make a decision about the severity of the flood. The results show that about 28.2 % of the study area has a high to very high risk of flooding and that flooding can be very strong in the northwestern regions with high population density, while the risk becomes low in the eastern, southeastern, and western arid and semi-arid regions with low population density.
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利用GIS建模和AHP方法在城市地区检测洪水易发区:以安曼省为例
本研究的目的是利用层次分析法(AHP)和GIS建模,尝试对安曼面临洪水风险的地区进行创造性的测绘。该方法(AHP)涉及通过比较采用的一些因素的加权。研究的主要影响因子为高程、坡度、降雨强度、径流、土地利用/土地覆盖、流量累积和SPI;这些被重新分类和加权,以绘制研究区域的洪水灾害等级图。每个因素/标准都被加权,并通过使用成对比较方法分配一个等级或分数,使研究人员能够对洪水的严重程度做出决定。结果表明:研究区约有28.2%的区域具有高至极高的洪涝风险,在人口密度高的西北地区洪涝风险非常大,而在人口密度低的东部、东南部和西部干旱半干旱区洪涝风险较低;
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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