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A comparison of four distributions used in flood frequency analysis in Bangladesh

 

作者: MD.ABDUL KARIM,   JAHIRUDDIN CHOWDHURY,  

 

期刊: Hydrological Sciences Journal  (Taylor Available online 1995)
卷期: Volume 40, issue 1  

页码: 55-66

 

ISSN:0262-6667

 

年代: 1995

 

DOI:10.1080/02626669509491390

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

This paper discusses how lognormal, Gumbel and log-Pearson type 3 distributions were eliminated as candidates for modelling at-site annual maximum discharge series in Bangladesh. Among candidate distributions, the generalized extreme value distribution best represented the statistical characteristics of observed data. Comparisons of distributions were based upon the root mean square deviation in fit, the probability plot correlation coefficient andL-moment ratio diagrams. The last method assesses whether a candidate distribution is capable of simulating the site-to-site variation in statistical characteristics that is present in observed flood samples.

 

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