J. Korean Soc. Hazard Mitig Search

CLOSE


J. Korean Soc. Hazard Mitig. > Volume 19(7); 2019 > Article
기후변화방재
Journal of the Korean Society of Hazard Mitigation 2019;19(7):95-104.
DOI: https://doi.org/10.9798/KOSHAM.2019.19.7.95    Published online December 31, 2019.
가뭄지수에 따른 가뭄평가 결과 비교연구
장쉬엔후이1, 박무종2, 김하룡3, 조지현4, 주진걸5
1정회원, 동신대학교 공과대학 박사과정
2정회원, 한서대학교 토목공학과 교수
3정회원, 공주대학교 건설환경공학부 연구교수
4동신대학교 사회복지학과 조교수
5정회원, 동신대학교 토목환경공학과 조교수
Comparison of Drought Assessment Results According to Three Drought Indices
Xuanhui Zhang1, Moojong Park2, Hayong Kim3, Jihyun Cho4, Jingul Joo5
1Member, Ph.D Course Student, Department of Civil Environmental Engineering, Dongshin University
2Member, Professor, Department of Civil Engineering, Hanseo University
3Member, Research Professor, Department of Civil and Environmental Engineering, Kongju National University
4Assistant Professor, Dept. of Social Welfare, Dongshin University
5Member, Assistant Professor, Department of Civil Environmental Engineering, Dongshin University
Corresponding author:  Jingul Joo, Tel: +82-61-330-3137, Fax: +82-61-330-3138, 
Email: jgjoo@dsu.ac.kr
Received: 17 October 2019   • Revised: 17 October 2019   • Accepted: 21 October 2019
Abstract
Although drought is a very damaging natural disaster, it is difficult to define the beginning of drought accurately. In this study, three drought indexes including the standardized precipitation index (SPI), generalized extreme value index (GEVI), and standardized precipitation evapotranspiration index (SPEI) were calculated in six cities, and the correlations among the drought indices were examined. Drought incidence rates, Pearson's correlation coefficients, and Spearman's correlation coefficients were compared. The results showed that the correlation between the SPI and SPEI was very high but that the correlation with the GEVI was slightly lower. However, in the case of long-term drought and extreme drought, the correlations among the three indices were very high.
Key Words: Drought, SPI, GEVI, SPEI, Pearson’s Correlation Coefficient, Spearman’s Correlation Coefficient
요지
가뭄은 매우 큰 피해를 주는 자연재해임에도 불구하고, 그 시작을 정확하게 정의하기 어려운 문제가 있다. 이에 본 연구에서는 6개 도시에서 SPI, GEVI, SPEI 등 3개 가뭄지수를 산정하고, 각 가뭄지수간의 상관성을 검토하였다. 심도별 가뭄발생비율, 피어슨 상관계수 및 스피어만 상관계수를 사용하여 3개 가뭄지수를 비교하였다. 분석결과 SPI, SPEI의 상관성은 매우 높게 나타났으며, GEVI는 다소 낮게 나타났다. 다만, 가뭄분석 시간단위가 긴 장기가뭄과 가뭄심도가 깊은 극한가뭄의 경우 세 지수간의 상관성이 매우 높은 것으로 나타났다.
핵심용어: 가뭄, SPI, GEVI, SPEI, 피어슨 상관계수, 스피어만 상관계수


ABOUT
ARTICLE CATEGORY

Browse all articles >

BROWSE ARTICLES
AUTHOR INFORMATION
Editorial Office
307 Main Bldg., The Korea Science Technology Center, 22 Teheran-ro 7-gil(635-4 Yeoksam-dong), Gangnam-gu, Seoul 06130, Korea
Tel: +82-2-567-6311    Fax: +82-2-567-6313    E-mail: master@kosham.or.kr                

Copyright © 2020 by The Korean Society of Hazard Mitigation. All rights reserved.

Developed in M2community

Close layer
prev next