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Episodic runoff generation at Central European headwater catchments studied using water isotope concentration signals

SYSNO ASEP	0468571
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Episodic runoff generation at Central European headwater catchments studied using water isotope concentration signals
Author(s)	Votrubová, J. (CZ) Dohnal, M. (CZ) Vogel, T. (CZ) Šanda, M. (CZ) Tesař, Miroslav (UH-J)_{ORCID, SAI, RID}
Source Title	Journal of Hydrology and Hydromechanics. - : Ústav pro hydromechaniku AV ČR, v. v. i.. - : Ústav hydrológie SAV - ISSN 0042-790X Roč. 65, č. 2 (2017), s. 114-122
Number of pages	9 s.
Publication form	Print - P
Language	eng - English
Country	SK - Slovakia
Keywords	O isotope ; headwater catchment runoff ; subsurface runoff ; tracer ; rainfall-runoff episodes
Subject RIV	DA - Hydrology ; Limnology
OECD category	Hydrology
Institutional support	UH-J - RVO:67985874
UT WOS	000398163300002
EID SCOPUS	85016300174
DOI	10.1515/johh-2017-0002
Annotation	Hydrological monitoring in small headwater catchments provides the basis for examining complex interrelating hydraulic processes that govern the runoff generation. Contributions of different subsurface runoff mechanisms to the catchment discharge formation at two small forested headwater catchments are studied with the help of their natural isotopic signatures. The Uhlirska catchment (Jizera Mts., Czech Republic) is situated in headwater area of the Lusatian Neisse River. The catchment includes wetlands at the valley bottom developed over deluviofluvial granitic sediments surrounded by gentle hillslopes with shallow soils underlain by weathered granite. The Liz catchment (Bohemian Forest, Czech Republic) is situated in headwater area of the Otava River. It belongs to hillslope-type catchments with narrow riparian zones. The soil at Liz is developed on biotite paragneiss bedrock. The basic comparison of hydrological time series reveals that the event-related stream discharge variations at the Uhlirska catchment are bigger and significantly more frequent than at Liz. The analysis of isotope concentration data revealed different behavior of the two catchments during the major rainfall-runoff events. At Uhlirska, the percentage of the direct runoff formed by the event water reaches its maximum on the falling limb of the hydrograph. At Liz, the event water related fraction of the direct outflow is maximal on the rising limb of the hydrograph and then lowers. The hydraulic functioning of the Uhlirska catchment is determined by communication between hillslope and riparian zone compartments.
Workplace	Institute of Hydrodynamics
Contact	Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
Year of Publishing	2018

Number of the records: 1