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http://dx.doi.org/10.12652/Ksce.2020.40.2.0135

Analysis of Drought Propagation from Meteorological to Hydrological Drought Considering Spatio-temporal Moving Pattern of Drought Events  

Yoo, Jiyoung (Hanyang University (ERICA))
So, Byung-Jin (Sejong University)
Lee, Joo-Heon (Joongbu University)
Kim, Tae-Woong (Hanyang University (ERICA))
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.40, no.2, 2020 , pp. 135-143 More about this Journal
Abstract
Natural drought is a three-dimensional phenomenon that simultaneously evolves in time and space. To evaluate the link between meteorological and hydrological droughts, we defined a drought event from a three-dimensional perspective and analyzed the propagation characteristics in time and spaces. Overall results indicated that 77 % of the total cases of spatio-temporal droughts was propagated based on the single category relationship between meteorological and hydrological drought events, while 23 % was affected by multiple meteorological drought events to the occurrence of hydrological drougts. Especially, it turned out that the hydrological drought was caused by the spatio-temporal effects of the propagation of four meteorological drought events generated due to long-term lack of precipitation in 1994-1995. In addition, the meteorological drought caused by the lack of precipitation in the summer of 2001 lasted for several months, and was propagated to the hydrological drought in April 2002.
Keywords
Drought propagation; Hydrological drought; Meteorological drought; Three dimensional drought event;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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