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A Study on the Evaluation of Probable Snowfall Depth in Korea  

Lee, Jae-Joon (국립금오공과대학교 토목환경공학부)
Jung, Young-Hoon (㈜효명 기술부)
Lee, Sang-Won (국립금오공과대학교 대학원 토목공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.7, no.2, 2007 , pp. 53-63 More about this Journal
Abstract
This study is to evaluate the probable snowfall depth by the point frequency analysis and to draw the map of probable snowfall depth in Korea. The 14 probability distributions which has been widely used in hydrologic frequency analysis are applied to the annual maximum depth of snowfall data. The parameters of each probability distribution are estimated by method of moments, maximum likelihood method and method of probability weighted moments. The estimated parameters were checked by parameter validity conditions of each assumed probability distribution. Four tests that are $X^2-test$, Kolmogorov-Smirnov test, Cramer von Mises test and probability plot correlation coefficient test are used in this study to determine the goodness of fit of the distributions. Mostly the 2-parameter gamma distribution was determined as appropriate distribution for the annual maximum new snowfall depth. The probable snowfall depth were obtained from appropriate distribution for the selected return periods and the maps of probable snowfall depth were presented. It will be useful to specify the snowfall load for the design of agricultural facilities such as vinyl house and cattle shed.
Keywords
heavy snow; maximum depth of snowfall; appropriate distribution; probable snowfall depth; snowfall frequency map;
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