| Title |
Estimation of Flood Flow and Inundation Range of the Aprokgang(Riv.) in 2024 using Satellite Images |
| Authors |
김주훈(Kim, Joo-Hun) ; 최윤석(Choi, Yun-Seok) ; 김동필(Kim, Dong-Phil) |
| DOI |
https://doi.org/10.12652/Ksce.2024.44.5.0673 |
| Keywords |
위성영상; 압록강; GSMaP; Sentinel-1; AW3D30 Satellite image; Aprokgang(Riv.); GSMaP; Sentine-1; AW3D30 |
| Abstract |
The purpose of this study was to estimate the flood flow and the range of inundation in the downstream area of the Aprokgang(Riv.) that occurred in 2024 using satellite images. The study area was the Aprokgang(Riv.) watershed, the longest river in North Korea. Satellite image Sentinel-1A(SAR-C) data was used for flood analysis before and after the flood. As a result of the analysis of the inundation range using satellite images, it was confirmed that there was a change in the water surface before and after the flood. However, the image after the flood was taken six days after the peak discharge of the flood, so there are limitations in extracting the accurate extent of the flooding. As a result of the analysis using satellite precipitation and ground observed rainfall, the rainfall exceeded 500-year rainfall amount, and the peak-flow was simulated as 85,102 m3/s. As a result of analyzing the inundation range by using the contour lines from AW3D30, it was determined that the inundation occurred around the 15 m contour line. In the future, it is need to conduct a study that can extract more scientifically the inundation range through the use of the inundation analysis model. |