A Minimal Model For Long Runout Landslides

Abstract

Predicting the distance traveled by landslides, avalanches, or debris flows is of primary interest for risk management and for limiting the devastation of these natural hazards. The increase of the run-out with the volume of the landslide is a crucial feature that has been documented for geophysical flows for decades. Laboratory-scale experiments have also managed to reproduce the dependence in the flow size for the runout for a granular heap sliding on an incline. However, the physical mechanism of such a feature is still debated. Here, we propose a simple model, which combines frictional sliding and granular column collapse, to explain the runout of landslides on an incline. Numerical simulations using depth averaged models support the model quantitatively. The model accurately represents both experimental data and natural field data.

Runout mechanism of landslides in alluvial basins with emphasis on the impact and erosion effects
Ye Chen, Fawu Wang, Maximillian Van Wyk de Vries +3
Natural Hazards and Earth System Sciences23 Oct 2026Peer-reviewedCC BY 4.0Environmental science & pollutionCrossref
Probability indication maps for avalanche runout for decision support in daily traffic rout risk management
Julia Glaus, Jan Kleinn, Lukas Stoffel +4
The Cryosphere26 Oct 2026Peer-reviewedCC BY 4.0Full textEnvironmental science & pollutionCopernicusCrossrefDOAJ
Investigations on the initiation mechanism of rainfall-induced loess landslides driven by sinkhole-assisted seepage: a case study in Qinghai, China
Shengshun Cai, Xuan Liu, Ruyi Wang +6
Scientific Reports1 Jul 2026Peer-reviewedCC BYFull textEnvironmental science & pollutionDOAJ
Constructing physical-based rainfall landslides prediction model: insights from rainfall threshold curves database of slope units
Kai Wang, Linmao Xie, Shuailong Xie +6
Natural hazards and earth system sciences26 May 2026Peer-reviewedCC BY8 citedEnvironmental science & pollutionOpenAlex
Can extreme rainfall associated with landslides affect air quality? A case study in a coastal city (São Sebastião, São Paulo State, Brazil).
Leticia Rocha Magalhães, Simone Andréa Pozza, Danilo Covaes Nogarotto
Environmental monitoring and assessment22 Oct 2026Peer-reviewedCC BYFull textAtmospheric science & meteorologyEurope PMC

Cite

BibTeX RIS

BibTeX

@misc{brivady2026minimal,
  title = {{A Minimal Model For Long Runout Landslides}},
  author = {Ludovic Brivady and Pierre-Yves Lagrée and Rory Cerbus and Thierry Faug and Hamid Kellay},
  howpublished = {HAL},
  year = {2026},
  month = sep,
  url = {https://hal.science/hal-05748988v1},
  note = {CC BY-NC-ND 4.0},
}

RIS

TY  - UNPB
TI  - A Minimal Model For Long Runout Landslides
AU  - Ludovic Brivady
AU  - Pierre-Yves Lagrée
AU  - Rory Cerbus
AU  - Thierry Faug
AU  - Hamid Kellay
PY  - 2026
DA  - 2026/09/14
PB  - HAL
UR  - https://hal.science/hal-05748988v1
AB  - Predicting the distance traveled by landslides, avalanches, or debris flows is of primary interest for risk management and for limiting the devastation of these natural hazards. The increase of the run-out with the volume of the landslide is a crucial feature that has been documented for geophysical flows for decades. Laboratory-scale experiments have also managed to reproduce the dependence in the flow size for the runout for a granular heap sliding on an incline. However, the physical mechanism of such a feature is still debated. Here, we propose a simple model, which combines frictional sliding and granular column collapse, to explain the runout of landslides on an incline. Numerical simulations using depth averaged models support the model quantitatively. The model accurately represents both experimental data and natural field data.
ER  -

Abstract

Related

Cite