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Study on Antecedent Moisture Condition for Seolma Stream Basin
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  • Journal title : Journal of Wetlands Research
  • Volume 15, Issue 4,  2013, pp.609-618
  • Publisher : Korean Wetlands Society
  • DOI : 10.17663/JWR.2013.15.4.609
 Title & Authors
Study on Antecedent Moisture Condition for Seolma Stream Basin
Ly, Sidoeun; Shin, Hyun Seok; Kim, Duck Hwan; Kim, Beom Jun; Kim, Hung Soo;
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Curve number (CN), originally developed, compiled by `The Natural Resources Conservation Service (NRCS)`, and has been widely used throughout the world. However, there is the uncertainty of CN derived from the use of antecedent moisture condition (AMC)/Antecedent Runoff Condition (ARC). As in Korea where nearly 70% covered by mountainous area, it is still not sufficient handbook precedent to guide or support the estimation of AMC/ARC. The failure to develop formal criteria of applying AMC/ ARC will be a gaping profession and results not only in uncertainty of CN estimation in particular, but also in designing appropriate structures in Korea as a whole. This paper is aiming at presenting a critical review of AMC/ARC and deriving a procedure to deal more realistically with event rainfall-runoff over wider variety of initial conditions. Proposed methods have been developed. It is based on modifying estimated runoff to observed runoff with coefficient of determination and then applying different algebraic expression with the verification of AMC by antecedent rainfall table of NEH-1964. The result shows that algebraic expression by Arnold et al. (1996) is the most appropriate for AMC/ARC and the results of AMC/ARC estimation criteria are generally very close to each other. Therefore, this algebraic expression might be applied in South Korea condition properly.
Antecedent Moisture Condition (AMC);Antecedent Runoff Condition (ARC);Asymptotic CN;Base flow Separation;Curve Number;
 Cited by
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