Citation

Weon BM, Je JH, Gremaud G. J. Synchrotron Radiat. 2010; 17(6): 817-820.

Affiliation

Department of Physics, School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.

Copyright

(Copyright © 2010, International Union of Crystallography, Publisher John Wiley and Sons)

DOI

10.1107/S0909049510035363

PMID

20975231

Abstract

Synchrotron phase-contrast hard X-ray imaging is used to provide highly efficient direct visualization of landslide dynamics and granular flows in fully wet granular piles. High penetration capability and phase-contrast enhancement of hard X-rays offer marked advantages in the precise tracking of individual granular movements through a thick water medium. It is revealed that the stress accumulation follows a power-law evolution while the relaxation follows an exponential one. The onset of landslide emerges at the trade-off of the two evolutions.

Language: en