KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Application of Regional Rainfall Frequency Analysis in South Korea(II): Monte Carlo Simulation and Determination of Appropriate Method

우리나라 강우자료의 지역빈도해석 적용성 연구(II): 모의실험 및 적합기법 선정

Lee, Young-Seok;Heo, Jun-Haeng;Nam, Woo-Sung;Kim, Kyung-Duk
이영석;허준행;남우성;김경덕

  • Published : 20070300

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Abstract

In this study, Monte Carlo simulation has been performed to compare the performance of regional shape estimation and index flood methods using L-moments of rainfall data from the companion paper of `Application of Regional Frequency Analysis in South Korea(I): Quantile Estimation'. For this purpose, the data were generated for various sample sizes, L-moment coefficient of variation (L-CV), L-moment skewness coefficients (L-skewness), and then the relative root mean square errors of rainfall quantiles were estimated. As the results of simulations, regional shape estimation method is better than index flood method when the regional L-CV is less than 0.25 and the range of at-site L-CV is bigger than 0.15. And index flood method is preferable to regional shape estimation method in Korea, in which sample sizes are relatively small.

Keywords

References

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