Investigating the temporal dynamics of suspended sediment during flood events with Be-7 and Pb-210(xs) measurements in a drained lowland catchment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90072%2F17%3A00344169" target="_blank" >RIV/68407700:90072/17:00344169 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1038/srep42099" target="_blank" >https://doi.org/10.1038/srep42099</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/srep42099" target="_blank" >10.1038/srep42099</a>

Result language

angličtina

Original language name

Investigating the temporal dynamics of suspended sediment during flood events with Be-7 and Pb-210(xs) measurements in a drained lowland catchment

Original language description

Soil erosion is recognized as one of the main processes of land degradation in agricultural areas. High suspended sediment loads, often generated from eroding agricultural landscapes, are known to degrade downstream environments. Accordingly, there is a need to understand soil erosion dynamics during flood events. Suspended sediment was therefore sampled in the river network and at tile drain outlets during five flood events in a lowland drained catchment in France. Source and sediment fallout radionuclide concentrations (Be-7, Pb-210(xs)) were measured to quantify both the fraction of recently eroded particles transported during flood events and their residence time. Results indicate that the mean fraction of recently eroded sediment, estimated for the entire Louroux catchment, increased from 45 +/- 20% to 80 +/- 20% between December 2013 and February 2014, and from 65 +/- 20% to 80 +/- 20% in January 2016. These results demonstrate an initial flush of sediment previously accumulated in the river channel before the increasing supply of sediment recently eroded from the hillslopes during subsequent events. This research highlights the utility of coupling continuous river monitoring and fallout radionuclide measurements to increase our understanding of sediment dynamics and improve the management of soil and water resources in agricultural catchments.

Czech name

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Czech description

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Type

J_imp - 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

Project

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Continuities

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Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Scientific Reports

ISSN

2045-2322

e-ISSN

2045-2322

Volume of the periodical

7

Issue of the periodical within the volume

February

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

1-10

UT code for WoS article

000393462300001

EID of the result in the Scopus database

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