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- W978515109 abstract "Floods are natural and dynamic phenomenon. Floods in Slovenia are mostly caused by intensiverainfall. Active and passive flood mitigations are performed to lower flood threat. Floods can endangerhuman lives, therefore effective and quality flood frequency analysis are important and in additionthey are also precondition for flood mitigations.Flood frequency analysis can be carried out with annual maximum series method or peaks overthreshold method. The main advantage of annual maximum series method is simplicity. Independencecriterion and threshold selection are two important properties of POT method. Due to these difficultiesPOT method remains unpopular and underemployed in the practice of design flood estimation. POTsample is compounded from all peaks above a certain threshold level. Annual maximum series samplecontains only maximum flood of each year.First part of graduation thesis consist theoretical background of partial duration and annual maximumseries methods. Goodness of fit tests which can be used for testing hypothesis and distributionscomparison are introduced. Confidence intervals are also discussed in thesis.In practical part of thesis flood frequency analysis are performed. Data from gauging station Litija 1on river Sava was used for analysis. Some frequently used probability distributions and three differentparameter estimation techniques were used. Method of moments, method of L-moments andmaximum likelihood method were applied to Litija 1 data. POT analyses were carried out for differentthreshold values and influence of threshold selection on analysis results was discussed. Goodness of fittests were used for determination of the best fit distribution and for comparison of parameterestimation techniques. We tried to define the optimal threshold value. Analyses results were comparedand we find out that POT method gave better results as annual maximum series method. Log-Pearsontype 3 distribution with parameters estimated with method of L-moments gave the best fit to data.Method of L-moments gave better results in most of the applied probability distributions as method ofmoments and maximum likelihood method." @default.
- W978515109 created "2016-06-24" @default.
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- W978515109 date "2012-09-07" @default.
- W978515109 modified "2023-09-23" @default.
- W978515109 title "Flood frequency analysis with peaks over threshold method and annual maximum series method" @default.
- W978515109 hasPublicationYear "2012" @default.
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