A comparative study of probability distribution models for flood discharge estimation: Case of Kravga Bridge, Turkey

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dc.contributor.authorTurhan, Evren
dc.contributor.authorDegerli, Serin
dc.date.accessioned2025-01-06T17:38:01Z
dc.date.available2025-01-06T17:38:01Z
dc.date.issued2022
dc.description.abstractDue to climate change, floods have been more frequent in recent years. Estimating the flood discharge as a result of flood frequency analysis is very substantial to make necessary preparations for possible floods. Data covering 36 years were collected from different stream gauging stations (SGS No: D17A016 and EIEI 1731) in Eastern Mediterranean Basin. With these data, flood discharge values were computed for return periods of 2, 5, 10, 25, 50, 100, 200, 500 and 1000 years. Normal, Log-Normal, Gumbel, Pearson Type III and Log-Pearson Type III statistical distribution methods were used. Kolmogorov-Smirnov (K-S) and Chi-square goodness-of-fit tests were performed to determine which distribution fitted the flood discharge the best. The study showed that the highest flood discharge among the probability distributions for both SGSs came from the Log-Normal distribution, and the lowest discharge was calculated with the Normal distribution. The K-S tests showed that all probability distributions conformed to the 20% significance level. For SGS D17A016, the flood values calculated with Log-Normal distribution were compatible with a 90% confidence interval according to the Chi-square test. Flood values obtained with the other distributions were found within the 10% significance level. In the Chi-square test for SGS EIEI-1731, all probability distributions fell within a 10% significance.
dc.identifier.doi10.15233/gfz.2022.39.14
dc.identifier.endpage257
dc.identifier.issn0352-3659
dc.identifier.issn1846-6346
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85147688423
dc.identifier.scopusqualityQ3
dc.identifier.startpage243
dc.identifier.urihttps://doi.org/10.15233/gfz.2022.39.14
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2419
dc.identifier.volume39
dc.identifier.wosWOS:000911413600002
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherUniv Zagreb , Andrija Mohorovicic Geophys Inst
dc.relation.ispartofGeofizika
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241211
dc.subjectflood frequency analysis
dc.subjectprobability distribution functions
dc.subjectgoodness-of-fit tests
dc.subjectreturn periods
dc.subjectKravga Bridge
dc.subjectTurkey
dc.titleA comparative study of probability distribution models for flood discharge estimation: Case of Kravga Bridge, Turkey
dc.title.alternativeModeli razdioba vjerojatnosti za procjenu kriti?nog protoka poplavljivanja: Primjer mosta Kravga, Turska
dc.typeArticle

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