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(Article of periodic en Anglais - 2012)

Document title

Rock fall dynamics and deposition : an integrated analysis of the 2009 Ahwiyah Point rock fall, Yosemite National Park, USA

Authors(s) and Affiliation(s)

ZIMMER V.L. (1) ; COLLINS B.D. (2) ; STOCK G.M. (3) ; SITAR N. (1) ;
(1) Dep. of Civil and Environmental Engineering, Univ. of California, Berkeley, ETATS-UNIS
(2) US Geological Survey, Menlo Park, California, ETATS-UNIS
(3) National Park Service, Yosemite National Park, California, El Portal, ETATS-UNIS

Abstract

The AA. analyzed a combination of airborne and terrestrial LiDAR, high-resolution photography, seismic, and acoustic data in order to gain insights into the initiation, dynamics, and talus deposition of a complex rock fall in eastern Yosemite Valley. The results suggest that accumulation of individual rock-fall boulders tends to steepen talus slopes, whereas large, energetic rock falls tend to flatten them. Detachment and impact signals were recorded by seismic and acoustic instruments and highlight the potential use of this type of instrumentation for generalized rock fall monitoring, while LiDAR and photography data were able to quantify the cliff geometry, rock fall volume, source and impact locations, and geomorphological changes to the cliff and talus

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, no6 [pp. eng-eng]

Bibliographic references : 39 ref.

Collation : 9 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3206

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