| Groundwater flooding vulnerability assessment in riverside alluviums ofNakdong River, South Korea |
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학술지명 EGU
저자 김덕근,장광수,이승현,권미진
발표일 2016-04-18
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Soil wetting or inundation due to rising groundwater table can cause groundwater flooding in the riversidealluvium and also affect the scale of surface water flooding. There is possible to occur the flooding of lowlandby falling the groundwater level at heavy rain and is important to evaluate the vulnerability and the predictionof groundwater problem. Three groups (safe, intermediate, and vulnerable) are classified by using groundwaterflooding vulnerability index(FVI) which is calculated using groundwater level’s time series measured at eachmonitoring well. A prediction model for the classification is developed by using a discriminant analysis based onthe correlation between the original groups and physical features (topography, soil, sediment layer distribution,soil drainage, and groundwater level-related features). And we have created a groundwater flooding vulnerabilityGIS Map.This research results is possible to policy support of establishment of flooding providing the flooding vulnerabilitytechnique using the groundwater occurring the damage came from the fluctuation of groundwater level by thewater level change of river and the effect of rainfall. Also, in conjunction with the existing flooding/drought map,it improve the accuracy of groundwater flooding/drought prediction, and it becomes possible to respond the watersources, water level down by using the evaluation system in flooding/drought. |