@article{fdi:010069368,
  title = {{E}ffects of pore pressure in pyroclastic flows : numerical simulation and experimental validation},
  author = {{G}ueugneau, {V}. and {K}elfoun, {K}. and {R}oche, {O}livier and {C}hupin, {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}yroclastic flows are mixtures of volcanic gases and particles that can be very hazardous owing to their fluid-like behavior. {O}ne possible mechanism to explain this behavior is the reduction of particles friction due to the internal gas pore pressure. {T}o verify this hypothesis, we present a numerical model of a granular flow with high initial pore pressure that decreases with time as the gas-particle mixture propagates. {F}irst, we validate the model by reproducing laboratory experiments. {T}hen, the numerical code is applied to pyroclastic flows of {L}ascar volcano (1993 eruption, {C}hile). {T}he simulation reproduces the runout and the morphological features of the deposits, with lateral levees, a central channel, and a lobate front. {O}ur results support the hypothesis of the role of gas pore pressure in pyroclastic flows and explain both the fluid-like behavior of the flows and the formation of lateral levees.},
  keywords = {},
  booktitle = {},
  journal = {{G}eophysical {R}esearch {L}etters},
  volume = {44},
  numero = {5},
  pages = {2194--2202},
  ISSN = {0094-8276},
  year = {2017},
  DOI = {10.1002/2017gl072591},
  URL = {https://www.documentation.ird.fr/hor/fdi:010069368},
}