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Probabilistic tephra fallout hazard maps for Sangay volcano, Ecuador
Alessandro Tadini
,
Federica Pardini
,
Andrea Bevilacqua
,
Benjamin Bernard
,
Pablo Samaniego
et al.
Article dans une revue
hal-04934013
v1
|
|
Unifying fluidization and defluidization of granular columns
L Chupin
,
Olivier Roche
,
Siet van den Wildenberg
Article dans une revue
hal-05043503
v1
|
|
Probabilistic, scenario-based hazard assessment for pyroclastic density currents at Tungurahua volcano, Ecuador
A. Aravena
,
Alessandro Tadini
,
A. Bevilacqua
,
Pablo Samaniego
,
B. Bernard
et al.
Article dans une revue
insu-04730597
v1
|
|
Different physics but similar dependence of runout distance with discharge rate: the duality of pyroclastic density currents
Olivier Roche
,
Nourddine Azzaoui
,
Arnaud Guillin
Article dans une revue
hal-04630062
v1
|
|
Run-out distance of initially fluidized, collapsing granular columns with different aspect ratios: Constraints and volcanological implications from experiments and 2D incompressible simulations
Alvaro Aravena
,
Laurent Chupin
,
Thierry Dubois
,
Olivier Roche
Article dans une revue
hal-04771089
v1
|
|
Dry granular collapse into a liquid: Role of viscous dissipation on granular flow regimes and associated waves
Alexis Bougouin
,
Sylvain Viroulet
,
Laurent Lacaze
,
Olivier Roche
,
Raphaël Paris
Article dans une revue
hal-04825472
v1
|
|
Tsunamis generated by pyroclastic flows: experimental insights into the effect of the bulk flow density
Alexis Bougouin
,
Raphael Paris
,
Olivier Roche
,
Mathilde Siavelis
,
Andréa Pawlak Courdavault
Article dans une revue
hal-04509188
v1
|
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Experimental Measurement of Enhanced and Hindered Particle Settling in Turbulent Gas‐Particle Suspensions, and Geophysical Implications
Baptiste Penlou
,
Olivier Roche
,
Michael Manga
,
Siet van den Wildenberg
Article dans une revue
hal-04012883
v1
|
|
Advances in our understanding of pyroclastic current behavior from the 1980 eruption sequence of Mount St. Helens volcano (Washington), USA
Brittany D. Brand
,
Nicholas Pollock
,
James W. Vallance
,
Tomaso Esposti Ongaro
,
Olivier Roche
et al.
Article dans une revue
insu-04197044
v1
|
|
Experimental Study of the Generation of Pore Gas Pressure in Pyroclastic Density Currents Resulting From Eruptive Fountain Collapse
Baptiste Penlou
,
Olivier Roche
,
Siet van den Wildenberg
Article dans une revue
hal-04378865
v1
|
|
High CO<SUB>2</SUB> content in magmas of the explosive andesitic Enco eruption of Mocho-Choshuenco volcano (Chile)
Jean-Guillaume Feignon
,
Nicolas Cluzel
,
Federica Schiavi
,
Séverine Moune
,
Olivier Roche
et al.
Article dans une revue
insu-03643025
v1
|
|
Long-runout pyroclastic density currents: Analysis and implications
Olivier Roche
,
Christopher Henry
,
Nourddine Azzaoui
,
Arnaud Guillin
Article dans une revue
hal-03792847
v1
|
|
PyroCLAST: a new experimental framework to investigate overspilling of channelized, concentrated pyroclastic currents
V. Gueugneau
,
S. Charbonnier
,
Olivier Roche
Article dans une revue
hal-03924443
v1
|
|
Tephra Fallout Probabilistic Hazard Maps for Cotopaxi and Guagua Pichincha Volcanoes (Ecuador) With Uncertainty Quantification
Alessandro Tadini
,
N. Azzaoui
,
Olivier Roche
,
Pablo Samaniego
,
B. Bernard
et al.
Article dans une revue
hal-03603654
v1
|
|
Influence of the topography of stratovolcanoes on the propagation and channelization of dense pyroclastic density currents analyzed through numerical simulations
Alvaro Aravena
,
Olivier Roche
Article dans une revue
insu-03708896
v1
|
|
Eruption type probability and eruption source parameters at Cotopaxi and Guagua Pichincha volcanoes (Ecuador) with uncertainty quantification
Alessandro Tadini
,
Olivier Roche
,
Pablo Samaniego
,
Nourddine Azzaoui
,
Andrea Bevilacqua
et al.
Article dans une revue
hal-03208239
v1
|
|
Influence of bottom roughness and ambient pressure conditions on the emplacement of experimental dam-break granular flows
Santiago Montserrat
,
Lady Ordoñez
,
Aldo Tamburrino
,
Olivier Roche
Article dans une revue
hal-03254037
v1
|
|
Experimental assessment of the effective friction at the base of granular chute flows on a smooth incline
Olivier Roche
,
Siet van den Wildenberg
,
Alexandre Valance
,
Renaud Delannay
,
A. Mangeney
et al.
Article dans une revue
hal-03249403
v1
|
|
Laboratory Landquakes: Insights From Experiments Into the High‐Frequency Seismic Signal Generated by Geophysical Granular Flows
M. Arran
,
A. Mangeney
,
J. de Rosny
,
M. Farin
,
R. Toussaint
et al.
Article dans une revue
hal-03253991
v1
|
|
Corrigendum to "Discharge rate of explosive volcanic eruption controls runout distance of pyroclastic density currents" [Earth Planet. Sci. Lett. 568 (2021) 117017]
Olivier Roche
,
Nourddine Azzaoui
,
Arnaud Guillin
Article dans une revue
insu-03708920
v1
|
|
Experimental Insights on the Propagation of Fine‐Grained Geophysical Flows Entering Water
Alexis Bougouin
,
Olivier Roche
,
Raphael Paris
,
Herbert E Huppert
Article dans une revue
hal-03192290
v1
|
|
Discharge rate of explosive volcanic eruption controls runout distance of pyroclastic density currents
Olivier Roche
,
Nourddine Azzaoui
,
Arnaud Guillin
Article dans une revue
hal-03254073
v1
|
|
The Tutupaca volcanic complex (Southern Peru): Eruptive chronology and successive destabilization of a dacitic dome complex
J. Mariño
,
Pablo Samaniego
,
N. Manrique
,
P. Valderrama
,
Olivier Roche
et al.
Article dans une revue
hal-03254008
v1
|
|
Pressure-dependent threshold in a granular flow: numerical modelling and experimental validation
Laurent Chupin
,
Thierry Dubois
,
Minh Phan
,
Olivier Roche
Article dans une revue
hal-02562000
v2
|
|
The influence of gas pore pressure in dense granular flows: numerical simulations versus experiments and implications for pyroclastic density currents
Alvaro Aravena
,
Laurent Chupin
,
Thierry Dubois
,
Olivier Roche
Article dans une revue
hal-03408294
v1
|
|
Granular mixture deflation and generation of pore fluid pressure at the impact zone of a pyroclastic fountain: Experimental insights
Allan Fries
,
Olivier Roche
,
Guillaume Carazzo
Article dans une revue
hal-03254051
v1
|
|
Impact of Fluidized Granular Flows into Water: Implications for Tsunamis Generated by Pyroclastic Flows
Alexis Bougouin
,
Raphael Paris
,
Olivier Roche
Article dans une revue
hal-02794348
v1
|
|
Acoustic probing of the particle concentration in turbulent granular suspensions in air
Siet van den Wildenberg
,
X. Jia
,
Olivier Roche
Article dans une revue
hal-02962260
v1
|
|
Quantifying the Uncertainty of a Coupled Plume and Tephra Dispersal Model: PLUME‐MOM/HYSPLIT Simulations Applied to Andean Volcanoes
M. Alessandro Tadini
,
Olivier Roche
,
Pablo Samaniego
,
A. Guillin
,
N. Azzaoui
et al.
Article dans une revue
hal-02453781
v1
|
|
A laboratory-scale study on the role of mechanical vibrations in pore pressure generation in pyroclastic materials: implications for pyroclastic flows
Carlos Soria-Hoyo
,
José Manuel Valverde
,
Olivier Roche
Article dans une revue
hal-02615201
v1
|
|
Maximum Solid Phase Concentration in Geophysical Turbulent Gas‐Particle Flows: Insights From Laboratory Experiments
A. Weit
,
Olivier Roche
,
Thierry Dubois
,
M. Manga
Article dans une revue
hal-02277038
v1
|
|
Continuum modelling of pressure‐balanced and fluidized granular flows in 2D: comparison with glass bead experiments and implications for concentrated pyroclastic currents
E.C.P. Breard
,
J. Dufek
,
Olivier Roche
Article dans une revue
hal-02277041
v1
|
|
The contribution of experimental volcanology to the study of the physics of eruptive processes, and related scaling issues: A review
Olivier Roche
,
Guillaume Carazzo
Article dans une revue
hal-02277033
v1
|
|
Autofluidization of collapsing bed of fine particles: Implications for the emplacement of pyroclastic flows
Corentin Chédeville-Monzo
,
Olivier Roche
Article dans une revue
hal-01927748
v1
|
|
Granular fingering as a mechanism for ridge formation in debris avalanche deposits: Laboratory experiments and implications for Tutupaca volcano, Peru
Patricio Valderrama Murillo
,
Olivier Roche
,
Pablo Samaniego
,
Benjamin van Wyk de Vries
,
G. Araujo
Article dans une revue
hal-01677525
v1
|
|
Experimental Measurement of the Solid Particle Concentration in Geophysical Turbulent Gas-Particle Mixtures
A. Weit
,
Olivier Roche
,
Thierry Dubois
,
M. Manga
Article dans une revue
hal-01914237
v1
|
|
Two-dimensional simulation by regularization of free surface viscoplastic flows with Drucker-Prager yield stress and application to granular collapse
Christelle Lusso
,
Alexandre Ern
,
François Bouchut
,
Anne Mangeney
,
Maxime Farin
et al.
Article dans une revue
hal-01133786
v2
|
|
Effects of pore pressure in pyroclastic flows : numerical simulation and experimental validation
Valentin Gueugneau
,
Karim Kelfoun
,
Olivier Roche
,
L. Chupin
Article dans une revue
hal-01625001
v1
|
|
Granular and particle-laden flows: from laboratory experiments to field observations
Renaud Delannay
,
Alexandre Valance
,
Anne Mangeney
,
Olivier Roche
,
Patrick Richard
Article dans une revue
hal-01481019
v1
|
|
Dynamic implications of ridges on a debris avalanche deposit at Tutupaca volcano (southern Peru)
Patricio Valderrama
,
Olivier Roche
,
Pablo Samaniego
,
Benjamin van Wyk de Vries
,
Karine Bernard
et al.
Article dans une revue
hal-01638575
v1
|
|
Highly explosive eruption of the monogenetic 8.6ka BP La Vache et Lassolas scoria cone complex (Chaîne des Puys, France)
Simone Jordan
,
Jean-Luc Le Pennec
,
Lucia Gurioli
,
Olivier Roche
,
Pierre Boivin
Article dans une revue
hal-01637384
v1
|
|
The controls and consequences of substrate entrainment by pyroclastic density currents at Mount St Helens, Washington (USA)
N.M. Pollock
,
B.D. Brand
,
Olivier Roche
Article dans une revue
hal-01637535
v1
|
|
Enhanced run-out of dam-break granular flows caused by initial fluidization and initial material expansion
S. Montserrat
,
A. Tamburrino
,
Olivier Roche
,
Y. Niño
,
C. F. Ihle
Article dans une revue
hal-01637427
v1
|
|
Are eruptions from linear fissures and caldera ring dykes more likely to produce pyroclastic flows?
David Jessop
,
J. Gilchrist
,
A.M. Jellinek
,
Olivier Roche
Article dans une revue
hal-01637379
v1
|
|
Slow-moving and far-travelled dense pyroclastic flows during the Peach Spring super-eruption
Olivier Roche
,
D. C. C Buesch
,
G. A. A Valentine
Article dans une revue
hal-01637183
v1
|
|
Eruptive parameters and dynamics of the April 2015 sub-Plinian eruptions of Calbuco volcano (southern Chile)
Angelo Castruccio
,
Jorge Clavero
,
Andrea Segura
,
Pablo Samaniego
,
Olivier Roche
et al.
Article dans une revue
hal-01637081
v1
|
|
MeMoVolc consensual document: a review of cross-disciplinary approaches to characterizing small explosive magmatic eruptions
Lucia Gurioli
,
D. Andronico
,
Patrick Bachèlery
,
Hélène Balcone-Boissard
,
Jean Battaglia
et al.
Article dans une revue
hal-01170133
v1
|
|
The historical (218 ± 14 aBP) explosive eruption of Tutupaca volcano (Southern Peru)
Pablo Samaniego
,
Patricio Valderrama Murillo
,
Jersy Mariño
,
Benjamin van Wyk de Vries
,
Olivier Roche
et al.
Article dans une revue
hal-01172542
v1
|
|
Evolution of Irruputuncu volcano, Central Andes, northern Chile
I. Rodríguez
,
Olivier Roche
,
Séverine Moune
,
F. Aguilera
,
E. Campos
et al.
Article dans une revue
hal-01914263
v1
|
|
Viscoplastic modeling of granular column collapse with pressure-dependent rheology
Ioan Ionescu
,
Anne Mangeney
,
François Bouchut
,
Olivier Roche
Article dans une revue
hal-01080456
v1
|
|
Towards a quantitative understanding of pyroclastic flows: Effects of expansion on the dynamics of laboratory fluidized granular flows
Laurence Girolami
,
Timothy H. Druitt
,
Olivier Roche
Article dans une revue
hal-01172391
v1
|
|
Influence of slope angle on pore pressure generation and kinematics of pyroclastic flows: insights from laboratory experiments
Corentin Chédeville-Monzo
,
Olivier Roche
Article dans une revue
hal-01914260
v1
|
|
Nature and velocity of pyroclastic density currents inferred from models of entrainment of substrate lithic clasts
Olivier Roche
Article dans une revue
hal-01134741
v1
|
|
Autofluidization of pyroclastic flows propagating on rough substrates as shown by laboratory experiments
Corentin Chédeville-Monzo
,
Olivier Roche
Article dans une revue
hal-01133677
v1
|
|
Fundamental changes of granular flow dynamics, deposition, and erosion processes at high slope angles: Insights from laboratory experiments
Maxime Farin
,
Anne Mangeney
,
Olivier Roche
Article dans une revue
istex
hal-01133676
v1
|
|
Experimental study of dense pyroclastic density currents using sustained, gas-fluidized granular flows
Pete J. Rowley
,
Olivier Roche
,
Timothy H. Druitt
,
Ray Cas
Article dans une revue
hal-01133621
v1
|
|
Dome collapse mechanisms and block-and-ash flow emplacement dynamics inferred from deposit and impact mark analysis, Mono Craters, CA
R.L. Dennen
,
M. I. Bursik
,
Olivier Roche
Article dans une revue
hal-01134228
v1
|
|
Dynamic pore-pressure variations induce substrate erosion by pyroclastic flows
Olivier Roche
,
Yarko Niño
,
Anne Mangeney
,
Brittany Brand
,
Nicholas Pollock
et al.
Article dans une revue
hal-00866159
v1
|
|
Pore fluid pressure diffusion in defluidizing granular columns
Santiago Montserrat
,
Aldo Tamburrino
,
Olivier Roche
,
Yarko Niño
Article dans une revue
hal-00720261
v1
|
|
Dynamics of dense granular flows of small-and-large-grain mixtures in an ambient fluid
C. Meruane
,
A. Tamburrino
,
Olivier Roche
Article dans une revue
hal-00784192
v1
|
|
Depositional processes and gas pore pressure in pyroclastic flows: an experimental perspective
Olivier Roche
Article dans une revue
istex
hal-00793602
v1
|
|
LiDAR derived morphology of the 1993 Lascar pyroclastic flow deposits, and implication for flow dynamics and rheology
David Jessop
,
Karim Kelfoun
,
Philippe Labazuy
,
Anne Mangeney
,
Olivier Roche
et al.
Article dans une revue
istex
hal-00787536
v1
|
|
On the run-out distance of geophysical gravitational flows: Insight from fluidized granular collapse experiments
Olivier Roche
,
M. Attali
,
Anne Mangeney
,
A. Lucas
Article dans une revue
istex
hal-00682312
v1
|
|
Erosion and mobility in granular collapse over sloping beds
A. Mangeney
,
Olivier Roche
,
O. Hungr
,
N. Mangold
,
Gloria Faccanoni
et al.
Article dans une revue
hal-00521671
v1
|
|
Velocity fields and depositional processes in laboratory ash flows, with implications for the dynamics of dense pyroclastic flows
L Girolami
,
Olivier Roche
,
Timothy H. Druitt
,
T Corpetti
Bulletin of Volcanology, 2010
Article dans une revue
hal-02169477
v1
|
|
Particle velocity fields and depositional processes in laboratory ash flows, with implications for the sedimentation of dense pyroclastic flows
Laurence Girolami
,
Olivier Roche
,
Timothy H. Druitt
,
Thomas Corpetti
Article dans une revue
istex
hal-00522979
v1
|
|
Pore fluid pressure and internal kinematics of gravitional laboratory air-particle flows: Insights into the emplacement dynamics of pyroclastic flows
Olivier Roche
,
S. Montserrat
,
Y. Niño
,
A. Tamburrino
Article dans une revue
hal-00521673
v1
|
|
On the role of the ambient fluid on gravitational granular flow dynamics
C. Meruane
,
A. Tamburrino
,
Olivier Roche
Article dans une revue
hal-00521666
v1
|
|
Propagation and hindered settling of laboratory ash flows
L Girolami
,
T. Druitt
,
Olivier Roche
,
Z. Khrabrykh
Article dans une revue
hal-02169463
v1
|
|
Experimental observations of water-like behavior of initially fluidized, dam break granular flows and their relevance for the propagation of ash-rich pyroclastic flows
Olivier Roche
,
Santiago Montserrat
,
Yarko Niño
,
Aldo Tamburrino
Article dans une revue
hal-00381402
v1
|
|
The influence of particle size on the flow of initially fluidized powders.
Olivier Roche
,
M.A. Gilbertson
,
J.C. Phillips
,
R.S.J. Sparks
Article dans une revue
istex
hal-00272268
v1
|
|
Inviscid behaviour of fines-rich pyroclastic flows inferred from experiments on gas–particle mixtures
Olivier Roche
,
R Gilbertson
,
J Phillips
,
R Sparks
Article dans une revue
istex
hal-01914230
v1
|
|
Experimental study of gas-fluidized granular flows with implications for pyroclastic flow emplacement
Olivier Roche
,
M. Gilbertson
,
J. Phillips
,
R. Sparks
Article dans une revue
istex
hal-01914219
v1
|
|
Experiments on deaerating granular flows and implications for pyroclastic flow mobility
Olivier Roche
,
M Gilbertson
,
J C Phillips
,
R S J Sparks
Article dans une revue
hal-03031507
v1
|
|
Sub-surface structures and collapse mechanisms of summit pit craters
Olivier Roche
,
Benjamin van Wyk de Vries
,
Timothy H. Druitt
Article dans une revue
istex
hal-03031476
v1
|
|
Onset of caldera collapse during ignimbrite eruptions
Olivier Roche
,
Timothy H. Druitt
Article dans une revue
istex
hal-03031494
v1
|
|
Experimental aqueous fluidization of ignimbrite
Olivier Roche
,
Timothy H. Druitt
,
R a F Cas
Journal of Volcanology and Geothermal Research, 2001, 112 (1-4), pp.267-280
Article dans une revue
hal-03031481
v1
|
|
Experimental study of caldera formation
Olivier Roche
,
Timothy H. Druitt
,
Olivier Merle
Article dans une revue
hal-03031456
v1
|