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http://dx.doi.org/10.11108/kagis.2010.13.1.074

2-D Inundation Analysis According to Post-Spacing Density of DEMs from LiDAR Using GIS  

Ha, Chang-Yong (School of Archi. & Civil Engineering, Kyungpook National University)
Han, Kun-Yeun (School of Archi. & Civil Engineering, Kyungpook National University)
Cho, Wan-Hee (School of Archi. & Civil Engineering, Kyungpook National University)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.13, no.1, 2010 , pp. 74-88 More about this Journal
Abstract
In this study, the points of LiDAR were modified in order to generate various DEM resolutions by applying LiDAR data in Ulsan. Since the LiDAR data have points with 1m intervals, the number of points for each resolution was modified to the size of 1, 5, 10, 30, 50, 100m by uniformly eliminating the points. A runoff analysis was performed on Taehwa river and its tributary, Dongcheon, with 200 year rainfall exceedance probability. 2-dimensional inundation analysis was performed based on the density of LiDAR data using FLUMEN, which was used to establish domestic flood risk map. Once DEM data obtained from LiDAR survey are used, it is expected that the study results can be used as data in determining optimal grid spacing, which is economical, effective and accurate in establishing flood defence plans including the creation of flood risk map.
Keywords
LiDAR; GIS; Inundation Analysis; Flood Risk Map; FLUMEN;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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