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Statistical Analysis of Precipitation Data for Hydrological and Hydraulic Modeling of Flash Floods
Zitatschlüssel uqubai.gessessew_iahrypncongress2020
Autor Gessessew, U., Tügel, F., Measho, Z., Weldearegay, K. & Hinkelmann, R.
Buchtitel Proceedings of the 1st IAHRYoung Professionals Congress, 17-18November 2020
Jahr 2020
Monat 11
Notiz 1st IAHR Young Professionals Congress, 17-18 November 2020, online conference, reviewed extended abstract and oral presentation
Organisation IAHR YPN
Zusammenfassung In hydrological and hydraulic modeling, identification and evaluation of the rainfall pattern and extreme events for a specific probability of occurrence is considerablyimportant. The purposeof thisresearchwasto identify patternsof precipitationdata andanalyseextreme events for atimeseries of 6939-pointdatafrom 2001-2019. The Mann-Kendall trend test isused to detectthe trend in the data at 5% level of significance. Log Pearson Type IIIand Gumbel areapplied for the analysis of the extreme rainfall events.Outlier testing was carried out and high andlow outliers were observed inthe datawith values 68.24 mm and 20.74 mm, respectivelyand were removed.As the computed p-value<0.0001is lower than the significance level alpha=0.05, the null hypothesis Ho should be rejected, and the alternative hypothesis Ha should be accepted. As the alternativehypothesisHais accepted, it is concluded that there is a significant trend component in the time series data.
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