Olivier Roche

M. Tadini, Olivier Roche, P. Samaniego, A. Guillin, N. Azzaoui, et al.. Quantifying the Uncertainty of a Coupled Plume and Tephra Dispersal Model: PLUME‐MOM/HYSPLIT Simulations Applied to Andean Volcanoes. Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2020, 125 (2), ⟨10.1029/2019JB018390⟩. ⟨hal-02453781v1⟩

Alexis Bougouin, Raphael Paris, Olivier Roche. Impact of Fluidized Granular Flows into Water: Implications for Tsunamis Generated by Pyroclastic Flows. Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2020, 125 (5), ⟨10.1029/2019JB018954⟩. ⟨hal-02794348⟩

S. van den Wildenberg, X. Jia, Olivier Roche. Acoustic probing of the particle concentration in turbulent granular suspensions in air. Scientific Reports, Nature Publishing Group, In press, 10 (1), ⟨10.1038/s41598-020-73427-z⟩. ⟨hal-02962260⟩

Carlos Soria-Hoyo, José Manuel Valverde, Olivier Roche. A laboratory-scale study on the role of mechanical vibrations in pore pressure generation in pyroclastic materials: implications for pyroclastic flows. Bulletin of Volcanology, Springer Verlag, 2019, 81 (2), ⟨10.1007/s00445-019-1271-3⟩. ⟨hal-02615201⟩

E.C.P. Breard, J. Dufek, Olivier Roche. Continuum modelling of pressure‐balanced and fluidized granular flows in 2D: comparison with glass bead experiments and implications for concentrated pyroclastic currents. Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2019, 124, pp.5557-5583. ⟨10.1029/2018JB016874⟩. ⟨hal-02277041⟩

Olivier Roche, Guillaume Carazzo. The contribution of experimental volcanology to the study of the physics of eruptive processes, and related scaling issues: A review. Journal of Volcanology and Geothermal Research, Elsevier, 2019, 384, pp.103-150. ⟨10.1016/j.jvolgeores.2019.07.011⟩. ⟨hal-02277033⟩

A. Weit, Olivier Roche, T. Dubois, M. Manga. Maximum Solid Phase Concentration in Geophysical Turbulent Gas‐Particle Flows: Insights From Laboratory Experiments. Geophysical Research Letters, American Geophysical Union, 2019, 46 (12), pp.6388-6396. ⟨10.1029/2019GL082658⟩. ⟨hal-02277038⟩

A. Weit, Olivier Roche, Thierry Dubois, M. Manga. Experimental Measurement of the Solid Particle Concentration in Geophysical Turbulent Gas-Particle Mixtures. Journal of Geophysical Research, American Geophysical Union, 2018, 123 (5), pp.3747 - 3761. ⟨10.1029/2018JB015530⟩. ⟨hal-01914237⟩

P. Valderrama, Olivier Roche, P. Samaniego, Benjamin van Wyk de Vries, G. Araujo. Granular fingering as a mechanism for ridge formation in debris avalanche deposits: Laboratory experiments and implications for Tutupaca volcano, Peru. Journal of Volcanology and Geothermal Research, Elsevier, 2018, 349, pp.409-418. ⟨10.1016/j.jvolgeores.2017.12.004⟩. ⟨hal-01677525⟩

Corentin Chédeville, Olivier Roche. Autofluidization of collapsing bed of fine particles: Implications for the emplacement of pyroclastic flows. Journal of Volcanology and Geothermal Research, Elsevier, 2018, 368, pp.91 - 99. ⟨10.1016/j.jvolgeores.2018.11.007⟩. ⟨hal-01927748⟩

Renaud Delannay, Alexandre Valance, Anne Mangeney, Olivier Roche, Patrick Richard. Granular and particle-laden flows: from laboratory experiments to field observations. Journal of Physics D: Applied Physics, IOP Publishing, 2017, 50 (5), pp.40. ⟨10.1088/1361-6463/50/5/053001⟩. ⟨hal-01481019⟩

Christelle Lusso, Alexandre Ern, François Bouchut, Anne Mangeney, Maxime Farin, et al.. Two-dimensional simulation by regularization of free surface viscoplastic flows with Drucker-Prager yield stress and application to granular collapse. Journal of Computational Physics, Elsevier, 2017, 333, pp.387-408. ⟨10.1016/j.jcp.2016.12.036⟩. ⟨hal-01133786v2⟩

V. Gueugneau, K. Kelfoun, Olivier Roche, L. Chupin. Effects of pore pressure in pyroclastic flows : numerical simulation and experimental validation. Geophysical Research Letters, American Geophysical Union, 2017, 44 (5), pp.2194-2202. ⟨10.1002/2017GL072591⟩. ⟨hal-01625001⟩

N.M. Pollock, B.D. Brand, Olivier Roche. The controls and consequences of substrate entrainment by pyroclastic density currents at Mount St Helens, Washington (USA). Journal of Volcanology and Geothermal Research, Elsevier, 2016, 325, pp.135 - 147. ⟨10.1016/j.jvolgeores.2016.06.012⟩. ⟨hal-01637535⟩

D.E. Jessop, J. Gilchrist, A.M. Jellinek, Olivier Roche. Are eruptions from linear fissures and caldera ring dykes more likely to produce pyroclastic flows?. Earth and Planetary Science Letters, Elsevier, 2016, 454, pp.142 - 153. ⟨10.1016/j.epsl.2016.09.005⟩. ⟨hal-01637379⟩

S.C. Jordan, L. Le Pennec, Lucia Gurioli, Olivier Roche, P. Boivin. Highly explosive eruption of the monogenetic 8.6ka BP La Vache et Lassolas scoria cone complex (Chaîne des Puys, France). Journal of Volcanology and Geothermal Research, Elsevier, 2016, 313, pp.15 - 28. ⟨10.1016/j.jvolgeores.2015.12.006⟩. ⟨hal-01637384⟩

Patricio Valderrama, Olivier Roche, Pablo Samaniego, Benjamin van Wyk de Vries, Karine Bernard, et al.. Dynamic implications of ridges on a debris avalanche deposit at Tutupaca volcano (southern Peru). Bulletin of Volcanology, Springer Verlag, 2016, 78 (2), ⟨10.1007/s00445-016-1011-x⟩. ⟨hal-01638575⟩

Olivier Roche, D. C. Buesch, G. A. Valentine. Slow-moving and far-travelled dense pyroclastic flows during the Peach Spring super-eruption. Nature Communications, Nature Publishing Group, 2016, 7, ⟨10.1038/ncomms10890⟩. ⟨hal-01637183⟩

S. Montserrat, A. Tamburrino, Olivier Roche, Y. Niño, C. F. Ihle. Enhanced run-out of dam-break granular flows caused by initial fluidization and initial material expansion. Granular Matter, Springer Verlag, 2016, 18 (1), ⟨10.1007/s10035-016-0604-6⟩. ⟨hal-01637427⟩

Angelo Castruccio, Jorge Clavero, Andrea Segura, Pablo Samaniego, Olivier Roche, et al.. Eruptive parameters and dynamics of the April 2015 sub-Plinian eruptions of Calbuco volcano (southern Chile). Bulletin of Volcanology, Springer Verlag, 2016, 78 (9), ⟨10.1007/s00445-016-1058-8⟩. ⟨hal-01637081⟩

Ioan Ionescu, Anne Mangeney, François Bouchut, Olivier Roche. Viscoplastic modeling of granular column collapse with pressure-dependent rheology. Journal of Non-Newtonian Fluid Mechanics, Elsevier, 2015, 219, pp.1-18. ⟨10.1016/j.jnnfm.2015.02.006⟩. ⟨hal-01080456⟩

Corentin Chedeville, Olivier Roche. Influence of slope angle on pore pressure generation and kinematics of pyroclastic flows: insights from laboratory experiments. Bulletin of Volcanology, Springer Verlag, 2015, 77 (11), art. 96 [13 p.]. ⟨10.1007/s00445-015-0981-4⟩. ⟨hal-01914260⟩

Olivier Roche. Nature and velocity of pyroclastic density currents inferred from models of entrainment of substrate lithic clasts. Earth and Planetary Science Letters, Elsevier, 2015, 418, pp.115-125. ⟨10.1016/j.epsl.2015.03.001⟩. ⟨hal-01134741⟩

L. Girolami, Timothy H. Druitt, Olivier Roche. Towards a quantitative understanding of pyroclastic flows: Effects of expansion on the dynamics of laboratory fluidized granular flows. Journal of Volcanology and Geothermal Research, Elsevier, 2015, 296, pp.31-39. ⟨10.1016/j.jvolgeores.2015.03.008⟩. ⟨hal-01172391⟩

Pablo Samaniego, Patricio Valderrama, Jersy Mariño, Benjamin van Wyk de Vries, Olivier Roche, et al.. The historical (218 ± 14 aBP) explosive eruption of Tutupaca volcano (Southern Peru). Bulletin of Volcanology, Springer Verlag, 2015, 77, pp.51. ⟨10.1007/s00445-015-0937-8⟩. ⟨hal-01172542⟩

Lucia Gurioli, D. Andronico, Patrick Bachèlery, Hélène Balcone-Boissard, Jean Battaglia, et al.. MeMoVolc consensual document: a review of cross-disciplinary approaches to characterizing small explosive magmatic eruptions. Bulletin of Volcanology, Springer Verlag, 2015, 77, pp.49. ⟨10.1007/s00445-015-0935-x⟩. ⟨hal-01170133⟩

I. Rodríguez, Olivier Roche, Séverine Moune, F. Aguilera, E. Campos, et al.. Evolution of Irruputuncu volcano, Central Andes, northern Chile. Journal of South American Earth Sciences, Elsevier, 2015, 63, pp.385 - 399. ⟨10.1016/j.jsames.2015.08.012⟩. ⟨hal-01914263⟩

Maxime Farin, Anne Mangeney, Olivier Roche. Fundamental changes of granular flow dynamics, deposition, and erosion processes at high slope angles: Insights from laboratory experiments. Journal of Geophysical Research, American Geophysical Union, 2014, 119, pp.504-532. ⟨10.1002/2013JF002750⟩. ⟨hal-01133676⟩

Pete J. Rowley, Olivier Roche, Timothy H. Druitt, Ray Cas. Experimental study of dense pyroclastic density currents using sustained, gas-fluidized granular flows. Bulletin of Volcanology, Springer Verlag, 2014, 76, pp.855. ⟨10.1007/s00445-014-0855-1⟩. ⟨hal-01133621⟩

Corentin Chedeville, Olivier Roche. Autofluidization of pyroclastic flows propagating on rough substrates as shown by laboratory experiments. Journal of Geophysical Research, American Geophysical Union, 2014, 119, pp.1764-1776. ⟨10.1002/2013JB010554⟩. ⟨hal-01133677⟩

R.L. Dennen, M. I. Bursik, Olivier Roche. Dome collapse mechanisms and block-and-ash flow emplacement dynamics inferred from deposit and impact mark analysis, Mono Craters, CA. Journal of Volcanology and Geothermal Research, Elsevier, 2014, 276, pp.1-9. ⟨10.1016/j.jvolgeores.2014.02.016⟩. ⟨hal-01134228⟩

Olivier Roche, Yarko Niño, Anne Mangeney, Brittany Brand, Nicholas Pollock, et al.. Dynamic pore-pressure variations induce substrate erosion by pyroclastic flows. Geology, Geological Society of America, 2013, 41 (10), pp.1107-1110. ⟨10.1130/G34668.1⟩. ⟨hal-00866159⟩

D.E. Jessop, Karim Kelfoun, Philippe Labazuy, Anne Mangeney, Olivier Roche, et al.. LiDAR derived morphology of the 1993 Lascar pyroclastic flow deposits, and implication for flow dynamics and rheology. Journal of Volcanology and Geothermal Research, Elsevier, 2012, 245-246, pp.81-97. ⟨10.1016/j.jvolgeores.2012.06.030⟩. ⟨hal-00787536⟩

Olivier Roche. Depositional processes and gas pore pressure in pyroclastic flows: an experimental perspective. Bulletin of Volcanology, Springer Verlag, 2012, 74, pp.1807-1820. ⟨10.1007/s00445-012-0639-4⟩. ⟨hal-00793602⟩

Santiago Montserrat, Aldo Tamburrino, Olivier Roche, Yarko Niño. Pore fluid pressure diffusion in defluidizing granular columns. Journal of Geophysical Research: Earth Surface, American Geophysical Union/Wiley, 2012, 117 (6), pp.F02034. ⟨10.1029/2011JF002164⟩. ⟨hal-00720261⟩

C. Meruane, A. Tamburrino, Olivier Roche. Dynamics of dense granular flows of small-and-large-grain mixtures in an ambient fluid. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2012, 86, pp.026311. ⟨10.1103/PhysRevE.86.026311⟩. ⟨hal-00784192⟩

Olivier Roche, M. Attali, Anne Mangeney, A. Lucas. On the run-out distance of geophysical gravitational flows: Insight from fluidized granular collapse experiments. Earth and Planetary Science Letters, Elsevier, 2011, 311, pp.375-385. ⟨10.1016/j.epsl.2011.09.023⟩. ⟨hal-00682312⟩

L Girolami, Olivier Roche, T. Druitt, T Corpetti. Velocity fields and depositional processes in laboratory ash flows, with implications for the dynamics of dense pyroclastic flows. Bulletin of Volcanology, Springer Verlag, 2010. ⟨hal-02169477⟩

Olivier Roche, S. Montserrat, Y. Niño, A. Tamburrino. Pore fluid pressure and internal kinematics of gravitional laboratory air-particle flows: Insights into the emplacement dynamics of pyroclastic flows. Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2010, 115, pp.B09206. ⟨10.1029/2009JB007133⟩. ⟨hal-00521673⟩

Laurence Girolami, Olivier Roche, Timothy H. Druitt, Thomas Corpetti. Particle velocity fields and depositional processes in laboratory ash flows, with implications for the sedimentation of dense pyroclastic flows. Bulletin of Volcanology, Springer Verlag, 2010, 72, pp.747-759. ⟨10.1007/s00445-010-0356-9⟩. ⟨hal-00522979⟩

C. Meruane, A. Tamburrino, Olivier Roche. On the role of the ambient fluid on gravitational granular flow dynamics. Journal of Fluid Mechanics, Cambridge University Press (CUP), 2010, 648, pp.381-404. ⟨10.1017/S002211200993181⟩. ⟨hal-00521666⟩

A. Mangeney, Olivier Roche, O. Hungr, N. Mangold, Gloria Faccanoni, et al.. Erosion and mobility in granular collapse over sloping beds. Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2010, 115 (F3), pp.F03040. ⟨10.1029/2009JF001462⟩. ⟨hal-00521671⟩

L Girolami, T. Druitt, Olivier Roche, Z. Khrabrykh. Propagation and hindered settling of laboratory ash flows. Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2008, 113 (B2), pp.B02202. ⟨10.1029/2007JB005074⟩. ⟨hal-02169463⟩

Olivier Roche, Santiago Montserrat, Yarko Niño, Aldo Tamburrino. Experimental observations of water-like behavior of initially fluidized, dam break granular flows and their relevance for the propagation of ash-rich pyroclastic flows. Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2008, 113 (B12), ⟨10.1029/2008JB005664⟩. ⟨hal-00381402⟩

Laurence Girolami, Timothy H. Druitt, Olivier Roche, Z. Khrabrykh. Propagation and hindered settling of laboratory ash flows. Journal of Geophysical Research, American Geophysical Union, 2008, 113, pp.B02202. ⟨10.1029/2007JB005074⟩. ⟨hal-00339189⟩

Olivier Roche, M.A. Gilbertson, J.C. Phillips, R.S.J. Sparks. The influence of particle size on the flow of initially fluidized powders.. Powder Technology, Elsevier, 2006, 166, pp.167-174. ⟨10.1016/j.powtec.2006.05.010⟩. ⟨hal-00272268⟩

Olivier Roche, R Gilbertson, J Phillips, R Sparks. Inviscid behaviour of fines-rich pyroclastic flows inferred from experiments on gas–particle mixtures. Earth and Planetary Science Letters, Elsevier, 2005, 240 (2), pp.401 - 414. ⟨10.1016/j.epsl.2005.09.053⟩. ⟨hal-01914230⟩

Olivier Roche, M. Gilbertson, J. Phillips, R. Sparks. Experimental study of gas-fluidized granular flows with implications for pyroclastic flow emplacement. Journal of Geophysical Research, American Geophysical Union, 2004, 109 (B10), ⟨10.1029/2003JB002916⟩. ⟨hal-01914219⟩

Olivier Roche, M Gilbertson, J Phillips, R Sparks. Experiments on deaerating granular flows and implications for pyroclastic flow mobility. Geophysical Research Letters, American Geophysical Union, 2002, 29 (16), pp.40-1-40-4. ⟨10.1029/2002gl014819⟩. ⟨hal-03031507⟩

Olivier Roche, B van Wyk de Vries, T Druitt. Sub-surface structures and collapse mechanisms of summit pit craters. Journal of Volcanology and Geothermal Research, Elsevier, 2001, 105 (1-2), pp.1-18. ⟨hal-03031476⟩

Olivier Roche, Timothy Druitt. Onset of caldera collapse during ignimbrite eruptions. Earth and Planetary Science Letters, Elsevier, 2001, 191 (3-4), pp.191-202. ⟨hal-03031494⟩

Olivier Roche, T Druitt, R Cas. Experimental aqueous fluidization of ignimbrite. Journal of Volcanology and Geothermal Research, Elsevier, 2001, 112 (1-4), pp.267-280. ⟨hal-03031481⟩

Olivier Roche, T Druitt, O Merle. Experimental study of caldera formation. Journal of Geophysical Research, American Geophysical Union, 2000, 105 (B1), pp.395-416. ⟨hal-03031456⟩

Olivier Roche, N. Azzaoui, Arnaud Guillin. An analysis of the relationship between mass eruption rate and runout distance of pyroclastic density currents. Joint JpGU-AGU meeting, Jul 2020, Chiba, Japan. ⟨hal-03003795⟩

Alexis Bougouin, R. Paris, Olivier Roche. Écoulement granulaire fluidisé impactant l'eau : Application aux tsunamis volcaniques. 24ème Congrès Français de Mécanique, Aug 2019, Brest, France. ⟨hal-02431199⟩

J. Mariño, Pablo Samaniego, N. Manrique, P. Valderrama, Olivier Roche, et al.. Succesive desetabilization of a dome complex constructed on an extinct, hydrothermally altered volcano: The Tutupaca Volcano case study (Southern Perú). 8th International Symposium on Andean Geodynamics (ISAG), Sep 2019, Quito, Ecuador. ⟨hal-02544345⟩

Alessandro Tadini, Olivier Roche, Pablo Samaniego, A. Guillin, N. Azzaoui, et al.. Developing probabilistic tephra fallout hazard maps for Cotopaxi and Guagua Pichincha volcanoes, Ecuador, with uncertainty quantification. AGU Fall meeting, Dec 2019, San Francisco, United States. ⟨hal-02453759⟩

N. Pollock, Olivier Roche, B. Brand. Using experimentally-derived scaling relationships to extract flow velocities and thicknesses from the deposits of pyroclastic currents. AGU Fall meeting, Dec 2019, San Francisco, United States. ⟨hal-02528032⟩

Olivier Roche, Siet van den Wildenberg, Alexandre Valance, R. Delannay, A Mangeney, et al.. Factors controlling the dynamics of volcanic granular mass flows: insights from experimental measurements of the basal forces of granular flows in an inclined channel. AGU fall meeting, Dec 2019, San Francisco, United States. ⟨hal-02528054⟩

A. Weit, Olivier Roche, T. Dubois, M. Manga. What is the maximum solid phase concentration in volcanic turbulent gas-particle mixtures? Experimental observations and implications for natural flows. AGU Fall meeting, Dec 2019, San Francisco, United States. ⟨hal-02528071⟩

Alexis Bougouin, Raphael Paris, Olivier Roche. Experimental modeling of tsunamis generated by pyroclastic flows: Fluidized granular flows into water. AGU Fall meeting, Dec 2019, San Francisco, United States. ⟨hal-02528018⟩

J.G. Feignon, Olivier Roche, Séverine Moune, Nicolas Cluzel, Federica Schiavi, et al.. High CO2 content in magmas at an arc volcano : the andesitic Enco eruption of Mocho-Choshuenco volcano (Chile). EGU General Assembly, Apr 2019, Vienne, Austria. ⟨hal-02404331⟩

Alessandro Tadini, G. Guillin, Olivier Roche, Pablo Samaniego, N. Azzoui, et al.. Validating the combined PLUME-MoM and HYSPLIT numerical models using field data from Ecuadorian volcanoes. Cities on volcanoes, Sep 2018, Naples, Italy. ⟨hal-02453916⟩

Olivier Roche. Dispositif de mesure des contraintes basales d’un écoulement granulaire. France, Patent n° : 1462666. 2015. ⟨hal-02115533⟩

Laurent Chupin, Thierry Dubois, Minh Phan, Olivier Roche. Pressure-dependent threshold in a granular flow: numerical modelling and experimental validation. 2020. ⟨hal-02562000⟩