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(Article of periodic en Anglais - 2014)

Document title

Patterns of topographic change in sub-humid badlands determined by high resolution multi-temporal topographic surveys

Authors(s) and Affiliation(s)

VERICAT D. (1 2 3) ; SMITH M.W. (4) ; BRASINGTON F. (5) ;
(1) Fluvial Dynamics Research group (RIUS). Dep. of Environment and Soil Sciences, Univ., Lleida, ESPAGNE
(2) Forestry and Technology Centre of Catalonia, Solsona, ESPAGNE
(3) Inst. of Geography and Earth Sciences, Univ. of Wales, Aberystwyth, ROYAUME-UNI
(4) School of Geography, Univ., Leeds, ROYAUME-UNI
(5) School of Geography, Queen Mary Univ., London, ROYAUME-UNI

Abstract

This paper aims to demonstrate how reliable estimates of topographic variables and temporal change can be derived for badlands by repeat Terrestrial Laser Scanning (TLS) surveys undertaken at multiple temporal (event to annual) scales. A total of 7 TLS-surveys were obtained in an experimental sub-humid badland located in the Villacarli Catchment, Central Pyrenees, Iberian Peninsula. Data analyses were conducted on 2 temporal scales : (a) 5 rainfall events and (b)3 long term (spaced over an annual cycle) scales. The results show a clear erosional pattern for most of the badland at the annual scale. Aspect, surface roughness and slope were significant predictors of topographic change, although the sign and magnitude of the change differed at the event scale. At the annual scale the effect of aspect in the sign of the topographic change was removed and slope becomes more important. Overall, the results indicate that coupling of appropriately-scaled spatial and temporal data is critical to understand topographic changes and their drivers on badlands

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2014, vol. 120 [pp. 164-176]

Bibliographic references : 1 p.

Collation : 7 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2014.04.012

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28681854 : Permanent link - XML version
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