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http://dx.doi.org/10.7780/kjrs.2019.35.5.2.4

The Analysis of Flood in an Ungauged Watershed using Remotely Sensed and Geospatial Datasets (II) - Focus on Estimation of Flood Inundation -  

Son, Ahlong (National Disaster Management Research Institute)
Kim, Jongpil (Korea National Park Research Institute)
Publication Information
Korean Journal of Remote Sensing / v.35, no.5_2, 2019 , pp. 797-808 More about this Journal
Abstract
This study evaluated the applicability of spacebourne datasets to the flood analysis in an ungauged watershed where is no discharge measurements. The Duman River basin of North Korea was selected as a target area which was flooded by recent Typhoon Lionrock. Topographical parameters for flood analysis were estimated from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM). GDEM includes the shortcomings of information on river cross-section, and conducted 2 dimensional flood analysis when considering virtual river cross-section and not considering it. As a result of comparative analysis, an error occurs in the inundation area and depth, but when used carefully, it is considered that the satellite image can be used for creating flood hazard map and utilizing information for response and preparation.
Keywords
Ungauged Basin; Satellite Image; GDEM; Flood Analysis; River Cross-Section;
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