Jaehyun Ahn's scientific contributions

Publications (3)

Article
Drought occurs more frequently in non-urban area where artificial water supply systems are not well equipped than in urban area where artificial water supply systems are well equipped, and occurs the first in such non-urban communities. In this study a drought index which can be applied to determine actual drought conditions on a daily basis at a r...
Article
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The effect of climate and landscape characteristics on hydrologic partitioning and vegetation response is analyzed in this study. After quantifying hydrologic partitioning using the Horton index, the relation between regional climate characteristics and the Horton index is investigated. In addition, using the comparison between the predictability o...
Article
In this study, drought Severity-affected Area-drought Duration (SAD) curves are analyzed in order to examine temporal and spatial behavior of drought. A copulas-based joint drought index which is studied recently is applied to express the severity of drought. JDIs across the country with 60 points are calculated monthly basis, and using EOF and Kri...

Citations

... 연구방법 및 자료 (Kim et al., 2012;Sim et al., 2013;Park et al., 2015). Fig. 3(a)의 부산-울산-경남 및 Fig. 3 2~4월로 이어지는 영남지역의 봄 가뭄사상의 경우에는 EDDI는 부산-경남 (Fig. 3(a))과 대구-경북 (Fig. 3(b) SPI는 지속시간별 이동평균 일별 강수량을 이용하여 계산 된다. ...
... Copula is applied to model the joint dependence structure between various drought indices [46]. It can model the dependencies that exist between multivariate data without restrictions on the marginal distribution [54]. In this work, we introduce copula theory to model the joint probability distribution of SPI and SMI (or SRI). ...