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(Article of periodic en Anglais - 2010)

Document title

Channel and floodplain sediment dynamics in a reach of the tropical meandering Rio Beni (Bolivian Amazonia)

Authors(s) and Affiliation(s)

GAUTIER E. (1) ; BRUNSTEIN D. (2) ; VAUCHEL P. (3) ; JOUANNEAU J.-M. (4) ; ROULET M. (5) ; GARCIA C. (6 2) ; GUYOT J.L. (7) ; CASTRO M. (8) ;
(1) Univ. Paris 8, CNRS UMR 8591, Lab. Géographie Physique, Meudon, FRANCE
(2) CNRS, Lab. Géographie Physique, Meudon, FRANCE
(3) IRD, Lima, PEROU
(4) CNRS, UMR 5805 EPOC, Talence, FRANCE
(5) IRD, UR 154 - LMTG, La Paz, BOLIVIE
(6) Univ. Paris 1, Paris, FRANCE
(7) IRD, Brasilia, BRESIL
(8) Univ. San Andres, Dep. of Geology, La Paz, BOLIVIE

Abstract

For the period 2002–2006, an assemblage of tools and methods (water and sediment discharges, topometric and bathymetric surveys, sedimentation rate estimations from unsupported 210Pb and sediment trapping system) was used to jointly analyse the influence on the sediment budget of external factors (mainly water and sediment discharge) and the inherent behaviour of the system. The main issue addressed is the investigation of the complex relationship between ‘morphological conditioning’ of fluvial landform and process. The first part of the study was undertaken with the aim of linking erosion–deposition in an active meander with water and sediment fluxes. The second part of the study, focusing on water and sediment exchanges between active bend and floodplain, examines the respective parts played by overbank flow and by an abandoned channel on the diffusion and sequestration of sediment. Finally, a sediment budget is proposed for the Beni River in the upper part of the Amazonian lowlands

Source

Article of periodic

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

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

Millesime : 2010, vol. 35, no15 [pp. 1838-1853]

Bibliographic references : 78 ref.

Collation : 11 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2065

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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