Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Estimation of Han River runoff using Cheugugi data

측우기 자료를 이용한 한강 유출량 추정

  • Moon, Jang Won (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology)
  • 문장원 (한국건설기술연구원 국토보전연구본부)
  • Received : 2019.11.08
  • Accepted : 2019.12.03
  • Published : 2019.12.31
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Abstract

In Korea, there are long-term rainfall observation data using Cheugugi, but it is relatively insufficient to use the data for water resources planning and management. In this study, river runoff is estimated based on the measurement data using Cheugugi so that it can be used as a scenario for the water resources planning process. After deriving the relationship between rainfall and runoff, the results are applied to the observations of Cheugugi to estimate the Han River runoff. An analysis of the estimated river runoff is made to confirm that there is a very severe drought for three consecutive years from 1900 to 1902. Especially, it is analyzed that there is a very small runoff in 1901, which is 8.6% compared to the average of estimated runoff. Consequently, it is judged that the results of this study can be useful as a scenario for water resources planning or drought response planning.

우리나라에는 측우기에 의한 강수량 관측 자료가 장기간 존재하고 있으나 이를 수자원 계획 수립 등에 활용하는 것은 상대적으로 부족한 상황이다. 이에 본 연구에서는 측우기 자료를 수자원 계획 수립 과정 등에 하나의 시나리오로 활용할 수 있도록 측우기 자료를 기반으로 한강유역의 하천유출량을 추정하기 위한 연구를 수행하였다. 강수량-유출량 관계를 도출하여 제시한 후 그 결과를 측우기 관측 강수량 자료에 적용하여 하천유출량 자료를 추정하였다. 추정된 하천유출량에 대한 분석을 통해 1900~1902년까지 3년 연속으로 매우 심각한 가뭄이 발생하였음을 확인할 수 있었으며, 1901년의 경우 평균 대비 8.6%의 매우 적은 유출이 발생한 것으로 분석되었다. 본 연구의 결과는 향후 수자원 계획이나 가뭄 대응 계획 수립 과정에서 고려할 수 있는 시나리오로서 유용하게 활용될 수 있을 것으로 판단된다.

Keywords

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