The influence of climate change on discharge fluctuations in Slovenian rivers

Oblak, Janij (author), Kobold, Mira (author), Šraj, Mojca (author)

In recent decades, an increase in the number of extreme flood events as well as extreme droughtevents has been observed in Slovenia. This rise the need for a comprehensive analysis of trends in dischargedata series. In the study, statistical trends in seasonal and annual mean, maximum, extreme and low dis-charge values were investigated using the Mann Kendall test. The results show a temporal and spatialvariability of trends in discharge. In general, a decreasing trend in water quantities in the rivers was observed.However, results at some gauging stations indicate statistically significant increasing trends, especially formaximum and extreme discharges. Additional analyses show that the discharge trends depend on the loca-tion of the gauging station.

• Language: English
• Keywords: hydrology, geography, trend analysis, Mann Kendall test, discharges, Slovenia
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2021
• Number of pages: Str. 155-169
• Numbering: Vol. 61, št. 2
• PID: 20.500.12556/RUL-133590
• UDC: 556.16:551.583(497.4)
• ISSN on article: 1581-6613
• DOI: 10.3986/AGS.9942
• COBISS.SI-ID: 87542787
• Publication date in RUL: 02.12.2021

Record is a part of a journal

• Title: Acta geographica Slovenica
• Shortened title: Acta geogr. Slov.
• Publisher: Geografski inštitut Antona Melika ZRC SAZU, Založba ZRC, Slovenska akademija znanosti in umetnosti
• ISSN: 1581-6613
• COBISS.SI-ID: 124775936

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
• Licensing start date: 04.05.2021

Secondary language

• Language: Slovenian
• Title: Vpliv podnebnih sprememb na nihanja pretokov v slovenskih rekah

Abstract

V zadnjih desetletjih v Sloveniji opažamo povečanje števila tako ekstremnih poplavnih kottudi ekstremnih sušnih dogodkov. To kaže na potrebo po kompleksni analizi trendov v serijah podatkovo pretokih. V raziskavi smo s pomočjo testa Mann Kendall analizirali statistične trende sezonskih in letnihpovprečnih, največjih, ekstremnih in nizkih vrednosti pretokov. Rezultati kažejo časovno in prostorskospremenljivost trendov pretokov. V splošnem smo zaznali trend zmanjševanja količin vode v rekah. Rezultatinekaterih vodomernih postaj pa kažejo na statistično značilno naraščajoče trende, zlasti za največje inekstremne pretoke. Dodatne analize kažejo, da so trendi pretokov odvisni od lokacije vodomerne postaje.

• Keywords: hidrologija, geografija, analiza trenda, Mann Kendallov test, pretoki, Slovenija

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0180
• Name: Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij.