Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Derivation of Probable Rainfall Intensity Formula at Masan District

마산지방 확률강우강도식의 유도

  • Kim, Ji-Hong (Dept. of Civil Engrg., Changwon National Univ.) ;
  • Bae, Deg-Hyo (Dept. of Civil Engrg., Changwon National Univ.)
  • 김지홍 (창원대학교 공과대학 토목공학과) ;
  • 배덕효 (창원대학교 공과대학 토목공학과)
  • Published : 2000.06.30
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Abstract

The frequency analysis of annual maximum rainfall data and the derivation of probable rainfall intensity formula at Masan station are performed in this study. Based on the eight different rainfall duration data from 10 minutes to 24 hours, eight types of probability distribution (Gamma, Lognormal, Log-Pearson type III, GEV, Gumbel, Log-Gumbel, Weibull, and Wakeby distributions), three types of parameter estimation scheme (moment, maximum likelihood and probability weighted methods) and three types of goodness-of-fit test (${\chi}^2$, Kolmogorov-Smirnov and Cramer von Mises tests) were considered to find an appropriate probability distribution at Masan station. The Lognormal-2 distribution was selected and the probable rainfall intensity formula was derived by regression analysis. The derived formula can be used for estimating rainfall quantiles of the Masan vicinity areas with convenience and reliability in practice.

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