Drought Assessment Using Standardized Precipitation Index and Streamflow Drought Index in Yeoncheon Region

Il Hwan Kim; Joo-heon Lee; Il-Moon Chung

doi:10.9720/kseg.2023.2.241

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2023 Vol.33, Issue 2 Preview Page Next Page

Research Article

Drought Assessment Using Standardized Precipitation Index and Streamflow Drought Index in Yeoncheon Region 연천지역의 표준 강수 지수와 하천 유량 가뭄지수를 이용한 가뭄 평가

30 June 2023. pp. 241-256

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Abstract

Long-term droughts and frequent spring droughts are causing damage to crops, which are the means of livelihood of residents of the Yeoncheon region. To analyze the degree of drought in Yeoncheon, the ratio of monthly precipitation and discharge was reviewed through observed data, and the standardized precipitation index and streamflow drought index were calculated. As a result of drought analysis using precipitation and discharge observation stations near the Yeoncheon basin, it was analyzed that the drought that occurred in 2014 was common to all drought indices and that drought occurred continuously until 2019, either large or small. In the case of drought indices with a duration of 12 months, it is expected that the damage caused by the drought would be severe as the drought period lasted 24 months. In order to manage drought damage, it is important to understand and predict the current state of drought. In order to cope with drought in advance, it is urgent to implement an integrated operation management strategy for rivers and waterworks structures according to the degree and duration of drought.

Keywords

Yeoncheon

standardized precipitation index

streamflow drought index

drought assessment

장주기의 가뭄과 빈번하게 발생하는 봄철 가뭄으로 연천지역 주민의 생계 수단인 농작물의 피해가 발생하고 있다. 연천의 가뭄에 대한 정도를 분석하기 위해 강수, 하천 유량 자료를 통해서 월별 유량 비율 등을 검토하였으며, 표준 강수 지수와 하천 유출 가뭄지수를 산정하였다. 연천군 유역 인근의 강수, 유량 관측소를 활용하여 가뭄 분석을 진행한 결과 모든 가뭄지수에서 공통적으로 2014년에 발생한 가뭄이 2019년까지 크거나 작게 지속된 것으로 분석되었다. 또한 지속기간 12개월의 가뭄지수의 경우 가뭄기간이 24개월이 지속됨에 따라 가뭄으로 인한 피해가 극심했을 것으로 예상된다. 가뭄 피해를 대처하기 위해 가뭄의 현재 상태를 파악하고 예측하는 것이 중요하며 가뭄의 정도 및 지속 기간에 따른 하천, 수공 구조물 등의 통합 운영관리 전략을 수행하는 것이 시급할 것으로 판단된다.

키워드

연천

표준 강수 지수

하천 유량 가뭄지수

가뭄 평가

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Information

Publisher :Korean Society of Engineering Geology
Publisher(Ko) :대한지질공학회
Journal Title :The Journal of Engineering Geology
Journal Title(Ko) :지질공학
Volume : 33
No :2
Pages :241-256
Received Date : 2023-04-28
Revised Date : 2023-06-21
Accepted Date : 2023-06-21
DOI :https://doi.org/10.9720/kseg.2023.2.241

The Journal of Engineering Geology ISSN:1226-5268(Print) 2287-7169(Online) 지질공학

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