Joint frequency analysis of streamflow and sediment amount with copula functions in the Kızlırmak Basin, Turkey

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dc.authoridBaykal, Tahsin/0000-0001-6218-0826
dc.contributor.authorBaykal, Tahsin
dc.date.accessioned2025-01-21T16:42:16Z
dc.date.available2025-01-21T16:42:16Z
dc.date.issued2024
dc.departmentKırıkkale Üniversitesi
dc.description.abstractThe accurate determination of sediment amount is crucial for the design and operation of reservoirs. The sediment rating curve (SRC) is the most widely used method for determining sediment amount. The SRC was derived from streamflow and sediment amount measurements taken at hydrometric monitoring stations. However, when measurements cannot be made at these stations (such as flooding), sediment amount determination becomes difficult. Therefore, in recent years, researchers have used copula functions to determine the relationship between streamflow and sediment amount. In this study, the joint distribution functions of streamflow and sediment amount at five different stations (Av & scedil;ar, Bulukaba & scedil;& imath;, & Idot;n & ouml;z & uuml;, S & ouml;& gbreve;& uuml;tl & uuml;han and Yamula) in the K & imath;z & imath;l & imath;rmak Basin, one of the most important basins of Turkey, were determined. Initially, the relationship between streamflow and sediment amount was examined and a positive correlation was found between the parameters. Then, the marginal distributions of each dataset were determined and joint distributions were generated using the Burr, Roch-Alegre, BB1 and Tawn Copula functions. The root mean square error of the mean square error (RMSE) and Nash-Sutcliffe efficiency (NSE) were used to select the optimal joint function. According to the optimal joint function determined for each station, the common return periods for both the AND and OR scenarios were calculated. When joint return periods were analyzed, the amount of sediment exceeded the average amount of sediment at all stations.
dc.identifier.doi10.1007/s11069-024-06966-7
dc.identifier.issn0921-030X
dc.identifier.issn1573-0840
dc.identifier.scopus2-s2.0-85207030826
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1007/s11069-024-06966-7
dc.identifier.urihttps://hdl.handle.net/20.500.12587/25036
dc.identifier.wosWOS:001336257600002
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofNatural Hazards
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241229
dc.subjectCopula functions; Joint distribution; Joint return period; Sediment amount; Streamflow
dc.titleJoint frequency analysis of streamflow and sediment amount with copula functions in the Kızlırmak Basin, Turkey
dc.typeArticle

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