(Article of periodic en Anglais - 2011)

Document title

Detection of surface change in complex topography using terrestrial laser scanning : application to the Illgraben debris-flow channel

Authors(s) and Affiliation(s)

SCHÜRCH P. (1 2) ; DENSMORE A.L. (1) ; ROSSER N.J. (1) ; LIM M. (1) ; MCARDELL B.W. (2) ;
(1) Dep. of Geography, Inst. of Hazard, Risk and Resilience, Univ., Durham, ROYAUME-UNI
(2) WDL Federal Inst. for Forest, Snow and Landscape research, SUISSE


In this study the AA. propose a methodology to detect surface change and to quantify the resultant volumetric errors in areas of complex topography such as channels, where data from multiple scan stations must be combined. They find that a commonly proposed source of error – laser point elongation at low incidence angles – has a negligible effect on the quality of the final registered point cloud. Instead, ambiguities in elevation inherent to registered datasets have a strong effect on the ability to detect and measure surface change. To demonstrate these concepts, the AA. use a test dataset from the Illgraben debris-flow channel in Switzerland. Similarly, the AA. find that changes in surface roughness between surveys also reduce the ability to detect change.


Article of periodic

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

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

Millesime : 2011, vol. 36, no14 [pp. 1847-1859]

Bibliographic references : 31 ref.

Collation : 8 fig., 4 tabl.



INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2206

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