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http://dx.doi.org/10.3741/JKWRA.2012.45.10.983

Analysis on the Spatio-Temporal Distribution of Drought using Potential Drought Hazard Map  

Lee, Joo Heon (Department of Civil Engineering, Joongbu University)
Cho, Kyeong Joon (Dae Kyung E&C)
Kim, Chang Joo (Department of Civil Engineering, Joongbu University)
Park, Min Jae (Department of Civil Engineering, Joongbu University)
Publication Information
Journal of Korea Water Resources Association / v.45, no.10, 2012 , pp. 983-995 More about this Journal
Abstract
In this study, it was intended to analyze the spatio-temporal distribution of historical drought events occurred in Korea by way of drought frequency analysis using SPI (Standardized Precipitation Index), and Drought spell was executed to estimate drought frequency as per drought severity and regions. Also, SDF (severity-duration-frequency) curves were prepared per each weather stations to estimate spatial distribution characteristics for the severe drought areas of Korea, and Potential Drought Hazard Map was prepared based on the derived SDF curves. Drought frequency analysis per drought stage revealed that severe drought as well as extreme drought frequency were prominently high at Geum River, Nakdong River, and Seomjin River basin as can be seen from SDF curves, and drought severity was found as severer per each drought return period in the data located at Geum River, Nakdong River, and Seomjin River basins as compared with that of Seoul weather station at Han River basin. In the Potential Drought Hazard Map, it showed that Geum River, Seomjin River, and Yeongsan River basins were drought vulnerable areas as compared to upper streams of Nakdong River basin and Han River basin, and showed similar result in drought frequency per drought stage. Drought was occurred frequently during spring seasons with tendency of frequent short drought spell as indicated in Potential Drought Hazard Map of different season.
Keywords
SPI; drought spell; SDF curve; potential drought hazard map;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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