TY - GEN
T1 - Regional rainfall frequency analysis based on generalized logistic model
AU - Nam, Woo Sung
AU - Shin, Hong Joon
AU - Heo, Jun Haeng
AU - Kim, Kyung Duk
PY - 2005
Y1 - 2005
N2 - At site analysis is not appropriate if the record length is shorter than the target return period T. If the record length is longer than 2T years, then at-site analysis may be sufficient. However, in such a case, regional analysis is recommended for purpose of comparison. Sample sizes of annual maximum rainfall data in Korea are usually shorter than 50 years. Therefore, it is essential to use regional frequency analysis for estimating rainfall quantiles of more than 100 years return period. In this research, regional rainfall frequency analysis is performed for hourly rainfall data of South Korea. The identification of homogeneous regions is very important and requires subjective judgments in regional frequency analysis. Cluster analysis is used to form homogeneous regions for regional frequency analysis. An appropriate distribution is chosen by goodness-of-fit test. GLO is found to be an appropriate distribution as a result of goodness-of-fit measure. Simulation experiments are performed to check the performance of frequency analysis techniques. The effects of discordant sites on quantiles are considered. Copyright ASCE 2005.
AB - At site analysis is not appropriate if the record length is shorter than the target return period T. If the record length is longer than 2T years, then at-site analysis may be sufficient. However, in such a case, regional analysis is recommended for purpose of comparison. Sample sizes of annual maximum rainfall data in Korea are usually shorter than 50 years. Therefore, it is essential to use regional frequency analysis for estimating rainfall quantiles of more than 100 years return period. In this research, regional rainfall frequency analysis is performed for hourly rainfall data of South Korea. The identification of homogeneous regions is very important and requires subjective judgments in regional frequency analysis. Cluster analysis is used to form homogeneous regions for regional frequency analysis. An appropriate distribution is chosen by goodness-of-fit test. GLO is found to be an appropriate distribution as a result of goodness-of-fit measure. Simulation experiments are performed to check the performance of frequency analysis techniques. The effects of discordant sites on quantiles are considered. Copyright ASCE 2005.
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U2 - 10.1061/40792(173)488
DO - 10.1061/40792(173)488
M3 - Conference contribution
AN - SCOPUS:37249059307
SN - 0784407924
SN - 9780784407929
T3 - World Water Congress 2005: Impacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress
SP - 488
BT - World Water Congress 2005
T2 - 2005 World Water and Environmental Resources Congress
Y2 - 15 May 2005 through 19 May 2005
ER -