The increasing flashiness in the Czech Republic: Natural variability or recent climate change?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020711%3A_____%2F25%3A10155554" target="_blank" >RIV/00020711:_____/25:10155554 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2214581826000571" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2214581826000571</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.6084/m9.figshare.30156571" target="_blank" >10.6084/m9.figshare.30156571</a>
Alternative languages
Result language
angličtina
Original language name
The increasing flashiness in the Czech Republic: Natural variability or recent climate change?
Original language description
Study region: This study examines catchments in the Czech Republic that have generated flash floods in the past, with a focus on hydrological response and physiographic parameters. Study focus: The hydrological response of events with peak discharges exceeding the one-year return period during the summer half-year was evaluated using the flashiness index. Catchments were categorized into clusters I-III based on physiographic parameters, employing principal component analysis and k-medoids clustering. To evaluate Czech flash floods, a descriptive flashiness metric was computed for both the Czech and European flash-flood datasets, enabling cross-regional comparison.New hydrological insights for the region: The results revealed an increase in 1-h flashiness during the recent period from 2018 to 2023 compared to 2005-2010, observed across all three clusters. The highest flashiness values were recorded in a group of small, steep catchments characterized by high terrain roughness, maximum elevations, a dense river network, and compact shape. A comparison of flash floods in the Czech Republic with those in Europe and the Mediterranean indicated that Czech flash floods generally exhibit lower unit peak discharge and 1-h flashiness values, although they can occasionally reach extreme intensities significant within the European and Mediterranean contexts.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10510 - Climatic research
Result continuities
Project
<a href="/en/project/SS02030040" target="_blank" >SS02030040: Prediction, Evaluation and Research for Understanding National sensitivity and impacts of drought and climate change for Czechia</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Hydrology: Regional Studies
ISSN
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e-ISSN
2214-5818
Volume of the periodical
64
Issue of the periodical within the volume
April 2026
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
17
Pages from-to
1-17
UT code for WoS article
001683228900002
EID of the result in the Scopus database
2-s2.0-105034013515