Primerjava metod izločanja baznega odtoka in analiza visokovodnih valov v Sloveniji : diplomska naloga

Horvat, Alja (author), Šraj, Mojca (mentor)

Zanesljivost verjetnostnih analiz poplavnih dogodkov lahko zagotovimo samo z dovolj poglobljeno analizo visokovodnih valov. Poglobljena analiza vključuje analizo konic, volumnov in trajanja visokovodnih valov. V teoretičnem delu diplomske naloge je predstavljena analiza hidrograma in baznega odtoka. Predstavljene so različne metode izločanja baznega odtoka, s poudarkom na avtomatiziranih postopkih, katerih cilj je, da se vzpostavijo enostavni in ponovljivi modeli. Predstavljen je tudi program R, ki ima ţe vgrajene različne modele za izločanje baznega odtoka. V praktičnem delu naloge smo med seboj najprej primerjali različne metode izločanja baznega odtoka na izbranem valu vodomerne postaje Radovljica I na reki Savi za leto 2004. Primerjali smo metodi BaseflowSeparation in BFI z različnimi nastavitvami filtra in števila prehodov in rezultate med seboj primerjali. Metoda, ki je dala najbolj optimalne rezultate, je bila v nadaljevanju uporabljena za analiziranje visokovodnih valov vodomernih postaj v Sloveniji. Analizirali smo konice, volumne in trajanja ter naklone naraščanja in upadanja visokovodnih valov. Rezultati povezav posameznih spremenljivk, ki smo jih pridobili z analiziranjem 50-ih vodomernih postaj v Sloveniji, so pokazali, da je največja povezanost med konico in volumnom visokovodnega vala, srednje velika med volumnom in trajanjem visokovodnega vala in najmanjša med konico in trajanjem visokovodnega vala.

• Language: Slovenian
• Keywords: gradbeništvo, diplomska naloga, UNI, VKI, hidrogram, bazni odtok, visokovodni val, konica pretoka, volumen vala, trajanje vala, program R Izvleček
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Place of publishing: Ljubljana
• Publisher: A. Horvat
• Year: 2014
• Number of pages: X, 85 str., 1 pril.
• PID: 20.500.12556/RUL-32302
• UDC: 556.166:532.5 (497.4)(043.2)
• COBISS.SI-ID: 6633569
• Publication date in RUL: 10.07.2015

Secondary language

• Language: English
• Title: Comparison of baseflow methods and analysis of flood waves in Slovenia

Abstract

Reliability of probabilistic analysis of flood events can only be assured by a sufficient deeply engaged analysis of flood waves. In-depth analysis includes an analysis of peaks, volumes and durations of flood waves. The theoretical part of the thesis comprises analysis of hydrograph and baseflow. Methods of baseflow extraction are presented, with an emphasis on automated procedures whose aim is to establish a simple and repeatable models for the extraction of baseflow. The program R is also presented, which includes packages for different baseflow separation methods. The practical part of the thesis includes the comparison of different baseflow separation methods for the selected flood wave of the gauging station Radovljica I on Sava River in 2004. We compare the BaseflowSeparation method and BFI method with different filters and number of passages. The method that gave us the best result was chosen for the analysis of flood waves of selected gauging stations in Slovenia. We analysed peak, volume, duration and slopes of the flood waves. The lingage between indivudual pairs of variables was investigated for 50 gauging stations in Slovenia. The results show that maximum correlation is between the peak and the volume of flood wave, medium correlation between the volume and the duration of flood wave and the minimum correlation is between the peak and the duration of the flood wave.

• Keywords: graduation thesis, civil engineering, hydrogram, baseflow, flood wave, peak flow, flood volume, flood duration, program R