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(Article of periodic en Anglais - 2012)

Document title

Runout analysis of a large rockfall in the Dolomites/Italian Alps using LIDAR derived particle sizes and shapes

Authors(s) and Affiliation(s)

HAAS F. (1) ; HECKMANN T. (1) ; WICHMANN V. (2) ; BECHT M. (1) ;
(1) Catholic Univ., Dep. of Physical Geography, Eichstaett, ALLEMAGNE
(2) alp-S Center for Climate Change Adaptation Technologies, Innsbruck, AUTRICHE

Abstract

LiDAR data were used to quantify and analyse a rockfall event which occurred in 2003 in the Western Dolomites (Italian Alps). In addition to previously existing airborne laserscanning (ALS) data, high resolution terrestrial laserscanning (TLS) data were collected. By using the original point clouds, the volume, axial ratio and runout length of single boulders as well as the surface roughness in the runout zone of the rockfall were derived. The total volume of the rockfall event was estimated by a reconstruction of the pre-event surface at the detachment zone. The analysis of the laser scanning data of the accumulation zone revealed a power law scaling for boulder volumes larger than 8 m3. In addition, the AA. used ALS and TLS data to derive the spatial distribution of surface roughness on the talus cone. TLS allow for more accurate roughness mapping than ALS data

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, no13 [pp. 1444-1455]

Bibliographic references : 2 p.

Collation : 12 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.3295

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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