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(Article of periodic en Anglais - 2013)

Document title

Quantifying different riverbank erosion processes during an extreme flood event

Authors(s) and Affiliation(s)

GROVE J.R. (1) ; CROKE J. (2) ; THOMPSON C. (3) ;
(1) Dept. of Resource management and Geography, Univ. of Melbourne, Parkville, AUSTRALIE
(2) Australian Rivers Inst., Griffith Univ., Brisbane, AUSTRALIE
(3) Centre for Integrated Catchment Assessment and Management (ICAM), Australian National Univ., Canberra, AUSTRALIE

Abstract

The aim of this paper is to determine processes and volumes of riverbank erosion at a catchment scale (Lockyer Creek Catchment in southeast Queensland). Remotely sensed data captured before and after an extreme flood event, enabled a digital elevation model of difference (DoD) to be constructed for the channel and floodplain. Three-dimensional forms of bank failures could be mapped at a resolution that enabled process inference; and the volume and rates of different bank erosion processes over time could be assessed. A classification of riverbank mass failures, integrating form and process, identified 437 mass failure polygons throughout the study area. The failures appeared to be the result of : bank exfiltration, antecedent moisture conditions preceding the event, and the historic development of the channel. It is shown that the availability of repeat LiDAR surveys, combined with high-resolution aerial photography, was very effective in erosion process determination and quantification at a large spatial scale

Source

Article of periodic

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

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

Millesime : 2013, vol. 38, no12 [pp. 1393-1406]

Bibliographic references : 2 p.

Collation : 9 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3386

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