KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Analysis of Changes of Spatio-Temporal Drought Characteristics Using Three-Dimensional Drought Maps

3차원 가뭄지도를 활용한 시공간적 가뭄 특성 변화 분석

  • 유지영 (한양대학교(ERICA) 건설환경공학과) ;
  • 김장경 (베이지안웍스) ;
  • 권현한 (세종대학교 건설환경공학과) ;
  • 김태웅 (한양대학교(ERICA) 건설환경공학과)
  • Received : 2019.11.20
  • Accepted : 2020.01.14
  • Published : 2020.04.01
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Abstract

In order to understand the characteristics of natural droughts, it is very important to interpret the spatio-temporal relationship between different types of droughts. In this study, meteorological and hydrological drought events were defined to account for the overlap between drought duration and spatial extent in three dimensions (i.e., latitude, longitude, and timing). In other words, the spatio-temporal drought propagation characteristics were analyzed based on the drought characteristic factors (duration, area, depth, center). The drought map considering the characteristics of spatio-temporal drought propagation can be used to find the fundamental cause of the hydrological drought which is expected to frequently occur in the future. In addition, the drought map is expected to be useful in preparing an effective drought response plan.

자연적인 가뭄의 발생특성을 이해하는 데 있어서는 서로 다른 유형의 가뭄 사이의 시공간적 관계를 해석하는 것이 매우 중요하다. 본 연구에서는 가뭄 지속시간과 3차원(즉, 위도, 경도 및 시간)의 공간 범위가 겹치는 것을 고려하여 기상 및 수문학적 가뭄사상을 정의하고 전이특성을 해석하였다. 이는 시공간적 가뭄 특성인자(지속기간, 면적, 심도, 중심)를 기반으로 하여 가뭄의 공간적 재현특성과 더불어 시간이라는 연속적인 개념을 결합한다는 것을 의미한다. 이처럼 개발된 시공간적 가뭄전이 특성을 고려한 가뭄지도는 향후 국지적으로 빈번히 발생하는 수문학적 가뭄의 발생 원인을 발견하고, 가뭄에 대한 효율적인 대응방안을 마련하는 데 활용도가 매우 높을 것으로 기대된다.

Keywords

References

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