Identification of long-term high-flow regime changes in selected stations along the Danube River

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Title:Identification of long-term high-flow regime changes in selected stations along the Danube River
Creators:
Pekárová, Pavla; Institute of Hydrology, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia.
Pramuk, Branislav; Institute of Hydrology, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia.
Halmová, Dana ; halmova at uh dot savba dot sk ; Institute of Hydrology, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia.
Miklánek, Pavol; Institute of Hydrology, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia.
Prohaska, Stevan ; Jaroslav Černi Institute for the Development of Water Resources, Jaroslava Černog 80, 11226 Belgrade, Serbia.
Pekár, Ján ; Comenius University in Bratislava, Faculty of Mathematics, Physics, and Informatics, Mlynská dolina F1, 842 48 Bratislava, Slovakia.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 64, 4, pp. 393-403
Uncontrolled Keywords:floods, hydrological regime, long streamflow series, Danube River, Flow thresholds, flood trends

Abstract

The aim of the paper is to study spatial and temporal changes in the magnitude, duration and frequency of high flows in the Danube basin. A hydrological series of the mean daily discharges from 20 gauging stations (operated minimally since 1930) were used for the analysis of changes in the daily discharges. The high flow events were classified into three classes: high flow pulses, small floods, and large floods. For each year and for each class, the means of the peak discharges, the number and duration of events, and the rate of changes of the rising and falling limbs of the waves were determined. The long-term trends of the annual time series obtained were analyzed and statistically evaluated. The long-term high flow changes were found to be different in three individual high flow classes. The duration of the category of high flow pulses is decreasing at 19 stations on the Danube and is statistically significant at the Linz, Vienna, Bratislava and Orsova stations. The frequency of the high flow pulses is increasing in all 20 stations. Also, the rising and falling rates of the high flow pulse category are increasing at the majority of the stations. The long-term trends of the selected characteristics of the small floods are very similar to the trends of the high flow pulses, i.e., the duration of small floods is decreasing, and their mean number per year is increasing. In the category of large floods the changes were not proved.

Official URL: http://147.213.145.2/vc/vc1.asp

Title:Identification of long-term high-flow regime changes in selected stations along the Danube River
Translated title:Identification of long-term high-flow regime changes in selected stations along the Danube River
Creators:
Pekárová, Pavla; Institute of Hydrology, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia.
Pramuk, Branislav; Institute of Hydrology, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia.
Halmová, Dana ; halmova at uh dot savba dot sk ; Institute of Hydrology, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia.
Miklánek, Pavol; Institute of Hydrology, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia.
Prohaska, Stevan ; Jaroslav Černi Institute for the Development of Water Resources, Jaroslava Černog 80, 11226 Belgrade, Serbia.
Pekár, Ján ; Comenius University in Bratislava, Faculty of Mathematics, Physics, and Informatics, Mlynská dolina F1, 842 48 Bratislava, Slovakia.
Uncontrolled Keywords:floods, hydrological regime, long streamflow series, Danube River, Flow thresholds, flood trends
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:64
Number:4
Page Range:pp. 393-403
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:8681
Item Type:Article
Deposited On:10 Nov 2016 17:47
Last Modified:10 Nov 2016 16:47

Citation

Pekárová, Pavla; Pramuk, Branislav; Halmová, Dana; Miklánek, Pavol; Prohaska, Stevan; Pekár, Ján (2016) Identification of long-term high-flow regime changes in selected stations along the Danube River. Journal of Hydrology and Hydromechanics, 64 (4). pp. 393-403. ISSN 0042-790X

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