Using morphometric analysis for assessment of flash flood susceptibility in the Mediterranean region of Turkey

被引:9
作者
Dutal, Hurem [1 ]
机构
[1] Kahramanmaras Sutcu Imam Univ, Fac Forestry, Kahramanmaras, Turkiye
关键词
Flash flood susceptibility; Mediterranean region; Climate change; Watershed management; Morphometric analysis; RIVER-BASIN; CLIMATE-CHANGE; RISK-ASSESSMENT; PRIORITIZATION; INDIA; RUNOFF; AREA; VULNERABILITY; SENSITIVITY; PARAMETERS;
D O I
10.1007/s10661-023-11201-0
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Flash floods are one of the most severe natural disasters around the world because of their rapid and unpredictable nature. It is expected that the frequency and intensity of flood events will increase because of extreme rainfall events induced by climate change. In this context, the generation of a flood susceptibility map contributes to effective flood management in a basin. The present study aims to generate a flash flood susceptibility map for the Imali Stream Basin (ISB) situated within the Mediterranean region of Turkey. For this purpose, morphometric analysis, geographic information system (GIS), remote sensing (RS), and principal component analysis (PCA) were used in this study. ASTER GDEM (v.3) was used to delineate 9 sub-watersheds and to obtain the required morphometric parameters. To generate a flash flood susceptibility map, the original compound values calculated for each sub-watershed were transformed into values between 0 and 1 by using the min-max normalization method. Then, these values were divided into 3 classes called low, moderate, and high by using the equal interval classification method in ArcGIS. According to both flash flood susceptibility maps produced by using morphometric analysis and PCA, sub-watershed 5 has the highest flash flood susceptibility in the basin. The flash flood that occurred in sub-watershed 5 in 2016 contributes to these results. Therefore, flood management based on morphometric analysis can be a highly effective method for decision-makers and planners in the Mediterranean region, one of the hotspots to be affected by climate change.
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页数:31
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