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  An assessment of water deficit and design characteristics of low flows along the river Vistula

Bogdanowicz, E., Karamuz, E., Napiórkowski, J., Senbeta, T. B. (2023): An assessment of water deficit and design characteristics of low flows along the river Vistula, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-0491

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Urheber

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 Urheber:
Bogdanowicz, Ewa1, Autor
Karamuz, Emilia1, Autor
Napiórkowski, Jarosław1, Autor
Senbeta, Tesfaye Belay1, Autor
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Zusammenfassung: In Poland, two types of low flows of different origins were observed. The summer and summer-autumn low flows, preceded by atmospheric and soil drought, begin with a depletion of the catchment retention resources. They are generally long-lasting, large-scale and dominant in the lowland part of the country. Winter low flows are typical for mountain rivers, although they can also occur in lowland rivers. Their occurrence is associated with longer periods of negative air temperature. In those conditions, the surface runoff is stopped, and groundwater inflows to the riverbeds are severely limited. Due to global warming, winter low flows in Polish rivers rarely occur. Summer and autumn droughts do not change their origin and character. This study aims to assess water deficits in the dry periods and their tendency of change in the stations along the River Vistula and to calculate the most commonly used design characteristics of low flows: mean minimum annual flow (MLQ) and the flow non-exceeded in 10 days with probability 50% (Q10, 50%). Water deficit analysis along the Vistula for the most severe events enables us to indicate reaches and their catchments strongly vulnerable to droughts. The calculations of Q10, 50% were performed by means of QdF (discharge-duration-frequency) method and compared with MLQ values. The research was performed on the basis of observation data (years 1951-2018). Acknowledgements: This work was supported by the project HUMDROUGHT, carried out in the Institute of Geophysics Polish Academy of Sciences, funded by National Science Centre (contract 2018/30/Q/ST10/00654).

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Sprache(n): eng - Englisch
 Datum: 2023
 Publikationsstatus: Final veröffentlicht
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 Ort, Verlag, Ausgabe: -
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 Identifikatoren: DOI: 10.57757/IUGG23-0491
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Veranstaltung

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Veranstaltungsort: Berlin
Start-/Enddatum: 2023-07-11 - 2023-07-20

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Genre der Quelle: Konferenzband
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Potsdam : GFZ German Research Centre for Geosciences
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