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KMID : 1024520170260121389
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Journal of the Environmental Sciences
2017 Volume.26 No. 12 p.1389 ~ p.1397
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Calculation of the Areal Reduction Factor of Hancheon River Basin based on Considering the Rainfall Characteristics in Jeju Island
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Kang Myung-Soo
Yang Sung-Kee
Kim Yong-Seok
Kang Bo-Seong
Yang Se-Chang
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Abstract
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In this study, we calculated the fixed-type Areal Reduction Factor (ARF) of the Hancheon River basin in Jeju Island, and compared the calculated ARF and the ARF of the four major river basins suggested by the Ministry of Land, Infrastructure and Transport. As a result, the maximum fluctuation ratios of ARF for the four major river basins calculated using area, frequency, and initial duration time were significant: 7.61% for the Hangang River basin; 12.69% for the Nakdonggang River basin; 8.09% for the Kumgang River basin; and 17.98% for the Yeongsangang River basin. In addition, the differences between the maximum and minimum value of ARF for the Hancheon River basin based on 48 hours was 2.13%, and it was smaller than the one for the four major river basins: 8.92% for the Hangang River basin; 11.41% for the Nakdonggang River basin; 8.87% for the Kumgang River basin; and 17.17% for the Yeongsangang River basin. The Yeongsangang River basin had the highest difference.
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KEYWORD
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Areal Reduction Factor, Hancheon river basin, Four major river basin
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