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Frictional velocity-weakening in landslides on Earth and on other planetary bodies

Author

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  • Antoine Lucas

    (Équipe de sismologie, Institut de Physique du Globe de Paris, Sorbone Paris Cité, Université Paris Diderot
    California Institute of Technology
    Present address: Laboratoire Astrophysique, Instrumentation et Modélisation (AIM), CNRS-UMR 7158, Université Paris-Diderot, CEA-Saclay, Gif-sur-Yvette 91191, France)

  • Anne Mangeney

    (Équipe de sismologie, Institut de Physique du Globe de Paris, Sorbone Paris Cité, Université Paris Diderot
    Équipe ANGE INRIA, Laboratoire Jacques-Louis Lions, UPMC Paris 6, 4 place Jussieu)

  • Jean Paul Ampuero

    (California Institute of Technology)

Abstract

One of the ultimate goals in landslide hazard assessment is to predict maximum landslide extension and velocity. Despite much work, the physical processes governing energy dissipation during these natural granular flows remain uncertain. Field observations show that large landslides travel over unexpectedly long distances, suggesting low dissipation. Numerical simulations of landslides require a small friction coefficient to reproduce the extension of their deposits. Here, based on analytical and numerical solutions for granular flows constrained by remote-sensing observations, we develop a consistent method to estimate the effective friction coefficient of landslides. This method uses a constant basal friction coefficient that reproduces the first-order landslide properties. We show that friction decreases with increasing volume or, more fundamentally, with increasing sliding velocity. Inspired by frictional weakening mechanisms thought to operate during earthquakes, we propose an empirical velocity-weakening friction law under a unifying phenomenological framework applicable to small and large landslides observed on Earth and beyond.

Suggested Citation

  • Antoine Lucas & Anne Mangeney & Jean Paul Ampuero, 2014. "Frictional velocity-weakening in landslides on Earth and on other planetary bodies," Nature Communications, Nature, vol. 5(1), pages 1-9, May.
  • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4417
    DOI: 10.1038/ncomms4417
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    Cited by:

    1. Dan Yu & Xinghui Huang & Zhengyuan Li, 2020. "Variation patterns of landslide basal friction revealed from long-period seismic waveform inversion," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 100(1), pages 313-327, January.
    2. Matthias Rauter & Sylvain Viroulet & Sigríður Sif Gylfadóttir & Wolfgang Fellin & Finn Løvholt, 2022. "Granular porous landslide tsunami modelling – the 2014 Lake Askja flank collapse," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    3. Jianqi Zhuang & Kecheng Jia & Jiewei Zhan & Yi Zhu & Chenglong Zhang & Jiaxu Kong & Chenhui Du & Shibao Wang & Yanbo Cao & Jianbing Peng, 2022. "Scenario simulation of the geohazard dynamic process of large-scale landslides: a case study of the Xiaomojiu landslide along the Jinsha River," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 112(2), pages 1337-1357, June.
    4. Morgane Brunet & Laurent Moretti & Anne Friant & Anne Mangeney & Enrique Domingo Fernández Nieto & Francois Bouchut, 2017. "Numerical simulation of the 30–45 ka debris avalanche flow of Montagne Pelée volcano, Martinique: from volcano flank collapse to submarine emplacement," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 87(2), pages 1189-1222, June.
    5. Sanshao Ren & Yongshuang Zhang & Jinqiu Li & Xiaoyi Liu & Ruian Wu, 2023. "A new type of sliding zone soil and its severe effect on the formation of giant landslides in the Jinsha River tectonic suture zone, China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 117(2), pages 1847-1868, June.

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