Frequency analysis of low flows in intermittent and non-intermittent rivers from hydrological basins in Turkey
| Autor: | Bülent Selek, Mehmet Ishak Yuce, Hafzullah Aksoy, Mahmut Çetin, Ece Unsal Karakus, Bihrat Önöz, Ebru Eris, Hakan Aksu, Musa Esit, Isilsu Yildirim, Halil Ibrahim Burgan |
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| Přispěvatelé: | Çukurova Üniversitesi, Ege Üniversitesi |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Hydrology
Return period Low flow-duration-frequency curve Low flow 010504 meteorology & atmospheric sciences 0207 environmental engineering Probability density function 02 engineering and technology Structural basin 01 natural sciences Stream gauge Flow (mathematics) Generalized extreme value distribution Environmental science Probability distribution Frequency analysis 020701 environmental engineering Intermittent river 0105 earth and related environmental sciences Water Science and Technology Weibull distribution |
| Popis: | EgeUn### This study attempts to find out the best-fit probability distribution function to low flows using the up-to-date data of intermittent and non-intermittent rivers in four hydrological basins from different regions in Turkey. Frequency analysis of D = 1-, 7-, 14-, 30-, 90- and 273-day low flows calculated from the daily flow time series of each stream gauge was performed. Weibull (W2), Gamma (G2), Generalized Extreme Value (GEV) and Log-Normal (LN2) are selected among the 2-parameter probability distribution functions together with the Weibull (W3), Gamma (G3) and Log-Normal (LN3) from the 3-parameter probability distribution function family. Selected probability distribution functions are checked for their suitability to fit each D-day low flow sequence. LN3 mostly conforms to low flows by being the best-fit among the selected probability distribution functions in three out of four hydrological basins while W3 fits low flows in one basin. With the use of the best-fit probability distribution function, the low flow-duration-frequency curves are determined, which have the ability to provide the end-users with any D-day low flow discharge of any given return period. Turkish National Meteorological and Hydrological Disasters Program (TUMEHAP) under the Turkish National Union of Geodesy and Geophysics (TUJJB) This study is a part of the project entitled 'Analysis of Low Flow and Drought in Hydrological Watersheds' funded through the Turkish National Meteorological and Hydrological Disasters Program (TUMEHAP) under the Turkish National Union of Geodesy and Geophysics (TUJJB). |
| Databáze: | OpenAIRE |
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