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

Pekárová, Pavla; Pramuk, Branislav; Halmová, Dana; Miklánek, Pavol; Prohaska, Stevan; Pekár, Ján

doi:10.1515/johh-2016-0045

Cited by 19 publications

(11 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A cyclical change in the precipitation regime (with a period of around 30 years) was also confirmed by the evidence of a change in the flow regime along the River Danube [95,96]. Our results show that an abrupt shift in the precipitation regime occurred between the years 1988 and 1997.…”

Section: Discussionsupporting

confidence: 84%

Precipitation Trends over Slovakia in the Period 1981–2013

Zeleňáková

Vido

Portela

et al. 2017

Water

View full text Add to dashboard Cite

Abstract:The objective of this paper was to analyze the temporal and spatial trends in annual and seasonal precipitation in Slovakia utilizing 487 gauging station data collected statewide in the period from 1981 to 2013. The nonparametric Mann-Kendall (MK) statistical test, which has been widely used to assess the significance of trends in hydrological time series, was applied to detect the significant trends. The Theil-Sen (TS) approach was applied to quantify the trend magnitude, and the Sequential Mann-Kendall (SQMK) test was used to detect abrupt temporal trend shifts. In general, precipitation data in the study area have not changed during the last 33 years, and there are no big gaps. However, predominantly increasing trends in precipitation time series were found at most of the gauging stations in Slovakia. The results corroborate previous climatic studies in the area of central Europe. In Slovakia, there is evidence of different rain distribution from the monthly point of view. Decreasing trends were detected in December in the northern part of Slovakia, while the central and southern parts revealed increasing trends. Most of the stations showed increasing summer precipitation trends, especially in July. It is expected that the findings of this comprehensive study of precipitation trends over Slovakia will produce more insights for the understanding of the regional hydrological behavior in Slovakia over the last several decades.

show abstract

Section: Discussionsupporting

confidence: 84%

Precipitation Trends over Slovakia in the Period 1981–2013

Zeleňáková

Vido

Portela

et al. 2017

Water

View full text Add to dashboard Cite

show abstract

“…In the Alps, Schmocker-Fackel and Naef (2010) and Peña et al (2015) found that the frequency of summer flooding in Switzerland had been on the rise in the last four decades and attributed the change to patterns of low-frequency atmospheric variability and the corresponding changes in the frequency of heavy precipitation. Similar results were presented by Pekárová et al (2016), who identified increasing frequency of large floods along the Danube river. Mediero et al (2015), on the other hand, detected a decreasing trend in the frequency of flooding in the Alps over the last four decades of the 20 th century through a European wide study.…”

Section: Regional Changes In the Frequency Of Flooding And Flood-generating Mechanismssupporting

confidence: 88%

Assessment of past flood changes across Europe based on flood-generating processes

Hundecha

Parajka²,

Viglione

2020

Hydrological Sciences Journal

View full text Add to dashboard Cite

A rainfall-runoff model was employed to identify four major flood-generating processes corresponding to flood events identified from daily discharge data from 614 stations across Europe in the period 1961-2010: long-rain, short-rain, snowmelt, and rain-on-dry-soil flood events. Trend analyses were performed on the frequency of occurrence of each of the flood types continentally and in five geographical regions of Europe. Continentally, the annual frequency of flood events did not show a significant change over the investigation period. However, the frequency of both winter and summer long-rain events increased significantly, while that of summer snowmelt events decreased significantly. Regionally, the frequency of winter short and long-rain events increased significantly in Western Europe, while the frequency of summer snowmelt and short-rain events decreased in Northern Europe. The frequency of summer snowmelt events in Eastern Europe and winter short-rain events in Southern Europe showed a declining trend.

show abstract

“…The declining trend in the frequency of summer rain-on-snow flood events in Northern and Eastern Europe found in our study can also be likely due to earlier snowmelt, which reduces the number of snow related events in the hydrological summer In the Alps, Schmocker-Fackel and Naef (2010) and Peña et al (2015) found that the frequency of summer flooding in Switzerland has been on the rise in the last four decades and associated the changes to patterns of low-frequency atmospheric variability and corresponding changes in the frequency of heavy precipitation. Similar results are presented by Pekárová et al, (2016) who identified increasing frequency of large floods along the Danube river. Although our results are in agreement with these studies in terms of the rise in the frequency of rainfall related summer flooding, we didn't find an increase in the 25 frequency of summer flooding as snow related floods have decreased in frequency, offsetting the increase in rainfall related floods.…”

supporting

confidence: 87%

Flood type classification and assessment of their past changes across Europe

Hundecha

Parajka

Viglione

2017

Preprint

View full text Add to dashboard Cite

Abstract. This study was carried out to establish the characteristics of observed flood events across Europe in the past in terms of their spatial extent and the processes leading up to the events. Daily discharge data from more than 745 stations of 10 the Global Runoff Data Centre were used to identify peak flows at each station for the period 1961-2010. The identified events at the different stations were further analysed to determine whether they form the same flood event, thereby delineating the spatial extent of the flood events. A pan-European hydrological model was employed to estimate a set of catchment hydrological and hydro-meteorological state variables that are relevant in the flood generation process for each of the identified spatially delineated flood events. A subsequent clustering of the events based on the simulated state variables 15 was used to identify the flood generation mechanism of each flood event. Four general flood generation mechanisms were identified: long-rain flood, short-rain flood, snowmelt flood, and rain-on-snow flood. A trend analysis was performed to investigate how the frequency of each of the flood types has changed in time over the investigation period. In order to investigate whether there is a regional and seasonal pattern in the dominant flood generating mechanisms, this analysis was performed separately for winter and summer seasons and five different regions of Europe: Northern, Western, Eastern, 20Southern Europe, and the Alps. Continentally, the total number of flood events didn't show a significant change. However, the frequency of winter long rain events increased significantly while that of summer rain-on-snow events decreased significantly over the investigation period. Regional differences were detected in the dominant flood generating mechanism and the corresponding trends. In Western Europe, the frequency of both winter and summer rainfall events increased significantly. In Northern and Eastern Europe, the frequency of summer rain-on-snow events decreased significantly. In 25 addition, winter short rainfall events increased significantly in Eastern Europe. In the Alps, the frequency of summer short rain events increased significantly.Hydrol. Earth Syst. Sci. Discuss., https://doi

show abstract

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

Cited by 19 publications

References 20 publications

Precipitation Trends over Slovakia in the Period 1981–2013

Precipitation Trends over Slovakia in the Period 1981–2013

Assessment of past flood changes across Europe based on flood-generating processes

Flood type classification and assessment of their past changes across Europe

Contact Info

Product

Resources

About