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(Article of periodic en Anglais - 2012)

Document title

The response of braided planform configuration to flow variations, bed reworking and vegetation : the case of the Tagliamento River, Italy

Authors(s) and Affiliation(s)

WELBER M. (1) ; BERTOLDI W. (1 2) ; TUBINO M. (1) ;
(1) Dep. of Civil and Environmental Engineering, Univ., Trento, ITALIE
(2) School of Geography, Queen Mary Univ., London, ROYAUME-UNI

Abstract

The AA. investigated at-a-station relationships between water level and planform configuration on the Tagliamento River in northeast Italy, over a 2-year study period comprising 3 bankfull events and several small-to-medium floods. The analysis was performed on 2 long reaches, characterized by different riparian vegetation cover. Ground-based images with an hourly temporal resolution were acquired using software-controlled, digital cameras. Bars, channels, pools and vegetated patches were manually digitized on more than 100 rectified images. Sequences of constant-level images spanning the study period were used to quantify the impact of floods on the stability of at-a-station relationships and on the turnover rate of water bodies. The analysis shows that wetted area increased almost linearly with water level in both reaches. The average number of branches per cross-section peaked at intermediate flow levels, increasing from 2 at low flow up to 6-7

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2012, vol. 37, no5 [pp. 572-582]

Bibliographic references : 1 p.

Collation : 10 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3196

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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