Publication details

Trends in flow intermittence for European rivers

Authors

TRAMBLAY Yves RUTKOWSKA Agnieszka SAUQUET Eric SEFTON Catherine LAAHA Gregor OSUCH Marzena ALBUQUERQUE Teresa ALVES Maria Helena BANASIK Kazimierz BEAUFORT Aurelien BROCCA Luca CAMICI Stefania CSABAI Zoltán Szabolcs DAKHLAOUI Hamouda DEGIROLAMO Anna Maria DÖRFLINGER Gerald GALLART Francesc GAUSTER Tobias HANICH Lahoucine KOHNOVÁ Silvia MEDIERO Luis PLAMEN Ninov PARRY Simon QUINTANA-SEGUÍ Pere TZORAKI Ourania DATRY Thibault

Year of publication 2021
Type Article in Periodical
Magazine / Source Hydrological Sciences Journal
MU Faculty or unit

Faculty of Science

Citation
Web https://doi.org/10.1080/02626667.2020.1849708
Doi http://dx.doi.org/10.1080/02626667.2020.1849708
Keywords ephemeral; ephemeral; intermittent; rivers; seasonality; SPEI; trends; zero flows
Description Intermittent rivers are prevalent in many countries across Europe, but little is known about the temporal evolution of intermittence and its relationship with climate variability. Trend analysis of the annual and seasonal number of zero-flow days, the maximum duration of dry spells and the mean date of the zero-flow events is performed on a database of 452 rivers with varying degrees of intermittence between 1970 and 2010. The relationships between flow intermittence and climate are investigated using the standardized precipitation evapotranspiration index (SPEI) and climate indices describing large-scale atmospheric circulation. The results indicate a strong spatial variability of the seasonal patterns of intermittence and the annual and seasonal number of zero-flow days, highlighting the controls exerted by local catchment properties. Most of the detected trends indicate an increasing number of zero-flow days, which also tend to occur earlier in the year, particularly in southern Europe. The SPEI is found to be strongly related to the annual and seasonal zero-flow day occurrence in more than half of the stations for different accumulation times between 12 and 24 months. Conversely, there is a weaker dependence of river intermittence with large-scale circulation indices. Overall, these results suggest increased water stress in intermittent rivers that may affect their biota and biochemistry and also reduce available water resources.

You are running an old browser version. We recommend updating your browser to its latest version.

More info