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(Article of periodic en Anglais - 2010)

Document title

Shear-rate-dependent strength control on the dynamics of rainfall-triggered landslides, Tokushima Prefecture, Japan

Authors(s) and Affiliation(s)

WANG G. (1) ; SUEMINE A. (1) ; SCHULZ W.H. (2) ;
(1) Disaster Prevention Research Inst., Univ., Kyoto, JAPON
(2) United States Geological Survey, Colorado, Denver, ETATS-UNIS

Abstract

An unstable block kept moving after the landslide triggered in Tokushima Prefecture by a typhoon in 2004, showing accelerating and decelerating movement during and after rainfall and reaching a displacement of several meters before countermeasures were put into place. To examine the mechanism for this landsliding characteristic, samples (weathered serpentinite) were taken from the field, and their shear behaviours examined using ring shear tests. The test results revealed that the residual shear strength of the samples is positively dependent on the shear rate, which may provide an explanation for the continuous accelerating–decelerating process of the landsliding. The roughness of the shear surface and the microstructure of the shear zone were measured and observed by laser microscope and SEM techniques in an attempt to clarify the mechanism of shear rate effect on the residual shear strength

Source

Article of periodic

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

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

Millesime : 2010, vol. 35, no4 [pp. 407-416]

Bibliographic references : 54 ref.

Collation : 21 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.1937

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2010
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