한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제60권5호
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  • Pages.81-93
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  • 2018
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  • 1738-3692(pISSN)
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  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
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기후변화에 따른 가지야마 공식 월별 보정계수 개선 및 평가

Assessment and Improvement of Monthly Coefficients of Kajiyama Formular on Climate Change

  • Seo, Jiho (Taeseong Construction Co., Ltd.) ;
  • Lee, Dongjun (Department of Regional Infrastructure Engineering, Kangwon National University) ;
  • Lee, Gwanjae (Department of Regional Infrastructure Engineering, Kangwon National University) ;
  • Kim, Jonggun (Institute of Agricultural and Life Science, Kangwon National University) ;
  • Kim, Ki-sung (Department of Regional Infrastructure Engineering, Kangwon National University) ;
  • Lim, Kyoung Jae (Department of Regional Infrastructure Engineering, Kangwon National University)
  • 투고 : 2018.06.19
  • 심사 : 2018.08.23
  • 발행 : 2018.09.30
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초록

The Kajiyama formula, which is an empirical formula based on the maximum flood data at Korean watersheds, has been widely used for the design of hydraulic structures and management of watersheds. However, this formula was developed based on meteorological data and flow measured during early 1900s so that it could not consider the recently changed rainfall pattern due to climate changes. Moreover, the formula does not provide the monthly coefficients for 5 months including July and August (flood season), which causes the uncertainty to accurately interpret runoff characteristics at a watershed. Thus, the objective of this study is to enhance the monthly coefficients based on the recent meteorological data and flow data expanding the range of rainfall classification. The simulated runoff using the enhanced monthly coefficients showed better performance compared to that using the original coefficients. In addition, we evaluated the applicability of the enhanced monthly coefficient for future runoff prediction. Based on the results of this study, we found that the Kajiyame formula with the enhanced coefficients could be applied for the future prediction. Hence, the Kajiyama formula with enhanced monthly coefficient can be useful to support the policy and plan related to management of watersheds in Korea.

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참고문헌

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