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(Article of periodic en Anglais - 2015)

Document title

Sediment (un)balance budget in a high-gradient stream on flysch bedrock : A case study using dendrogeomorphic methods and bedload transport simulation

Authors(s) and Affiliation(s)

ŠILHÁN K. (1) ; GALIA T. (1) ;
(1) Dept. of Physical Geography and Geoecology, Fac. of Science, Univ., Ostrava, TCHEQUE, REPUBLIQUE

Abstract

The AA. analysed 138 cross-sections from the roots of predominantly broad-leaved trees, which were exposed in bank failures from different floods, on the Moravskoslezské Beskydy Mts in the Czech Republic. Using the spatial position of the roots and dating the exposure time, they determined the volume of material supply into the channel during the last flood, in 2010. In-channel sediment transport was analysed on 14 cross-sections, and the channel sediment thickness was estimated using the geophysically based ERT (Electrical Resistivity Tomography) method. The calculated total volume of sediment supply resulting from bank failures during the flood (based on dendrogeomorphic methods) was significantly lower than the calculated bedload transport for the entire study area. This finding implies that contemporary sediment sources cannot adequately cover the transport capacity during high-magnitude flood events, and in general, in-channel erosion processes prevail

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2015, vol. 124 [pp. 18-27]

Bibliographic references : 51 ref.

Collation : 9 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2014.08.020

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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