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authFullName_s : Olivier Roche

Les aléas volcaniques

Raphael Paris , Philipson Bani , Magdalena Oryaëlle Chevrel , Franck Donnadieu , Julia Eychenne et al.
Lénat Jean-François. Aléas et surveillance de l’activité volcanique 1 : approches géologiques et historiques, Chap 2, ISTE editions, pp.83-158, 2022, Geosciences, 978-1-78948-043-6
Book sections hal-03865907v1
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Impact of Fluidized Granular Flows into Water: Implications for Tsunamis Generated by Pyroclastic Flows

Alexis Bougouin , Raphael Paris , Olivier Roche
Journal of Geophysical Research : Solid Earth, 2020, 125 (5), ⟨10.1029/2019JB018954⟩
Journal articles hal-02794348v1
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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
Granular Matter, 2021, 23 (3), ⟨10.1007/s10035-021-01125-2⟩
Journal articles hal-03254037v1
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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.
Physical Review E , 2021, 103 (4), pp.042905. ⟨10.1103/PhysRevE.103.042905⟩
Journal articles hal-03249403v1
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Long-runout pyroclastic density currents: Analysis and implications

Olivier Roche , Christopher Henry , Nourddine Azzaoui , Arnaud Guillin
Geology, 2022, 50 (10), pp.1172-1176. ⟨10.1130/G50215.1⟩
Journal articles hal-03792847v1
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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.
Bulletin of Volcanology, 2021, 83 (5), ⟨10.1007/s00445-021-01458-z⟩
Journal articles hal-03208239v1
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Erosion and mobility in granular collapse over sloping beds

A. Mangeney , Olivier Roche , O. Hungr , N. Mangold , Gloria Faccanoni et al.
Journal of Geophysical Research : Solid Earth, 2010, 115 (F3), pp.F03040. ⟨10.1029/2009JF001462⟩
Journal articles hal-00521671v1
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Autofluidization of pyroclastic flows propagating on rough substrates as shown by laboratory experiments

Corentin Chedeville , Olivier Roche
Journal of Geophysical Research, 2014, 119, pp.1764-1776. ⟨10.1002/2013JB010554⟩
Journal articles hal-01133677v1
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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.
Bulletin of Volcanology, 2015, 77, pp.49. ⟨10.1007/s00445-015-0935-x⟩
Journal articles hal-01170133v1
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High CO2 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.
Bulletin of Volcanology, 2022, 84 (4), pp.40. ⟨10.1007/s00445-022-01550-y⟩
Journal articles insu-03643025v1

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
Bulletin of Volcanology, 2019, 81 (2), ⟨10.1007/s00445-019-1271-3⟩
Journal articles hal-02615201v1

The historical (218 ± 14 aBP) explosive eruption of Tutupaca volcano (Southern Peru)

Pablo Samaniego , Patricio Valderrama , Jersy Mariño , Benjamin van Wyk de Vries , Olivier Roche et al.
Bulletin of Volcanology, 2015, 77, pp.51. ⟨10.1007/s00445-015-0937-8⟩
Journal articles hal-01172542v1

Autofluidization of collapsing bed of fine particles: Implications for the emplacement of pyroclastic flows

Corentin Chédeville , Olivier Roche
Journal of Volcanology and Geothermal Research, 2018, 368, pp.91 - 99. ⟨10.1016/j.jvolgeores.2018.11.007⟩
Journal articles hal-01927748v1

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.
Bulletin of Volcanology, 2016, 78 (2), ⟨10.1007/s00445-016-1011-x⟩
Journal articles hal-01638575v1
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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
Journal of Geophysical Research : Solid Earth, 2023, 128 (3), ⟨10.1029/2022JB025809⟩
Journal articles hal-04012883v1
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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 et al.
Journal of Volcanology and Geothermal Research, 2016, 313, pp.15-28. ⟨10.1016/j.jvolgeores.2015.12.006⟩
Journal articles hal-01637384v1
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Alvaro Aravena , Laurent Chupin , Thierry Dubois , Olivier Roche
8th European Congress on Computational Methods in Applied Sciences and Engineering ( ECCOMAS 2022), Jun 2022, Oslo, Norway
Conference papers hal-03726486v2
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Experimental study of caldera formation

Olivier Roche , Timothy H. Druitt , Olivier Merle
Journal of Geophysical Research, 2000, 105 (B1), pp.395-416
Journal articles hal-03031456v1
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PyroCLAST: a new experimental framework to investigate overspilling of channelized, concentrated pyroclastic currents

V. Gueugneau , S. Charbonnier , Olivier Roche
Bulletin of Volcanology, 2022, 85 (1), pp.5. ⟨10.1007/s00445-022-01623-y⟩
Journal articles hal-03924443v1
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Velocity fields and depositional processes in laboratory ash flows, with implications for the dynamics of dense pyroclastic flows

L Girolami , Olivier Roche , T. Druitt , T Corpetti
Bulletin of Volcanology, 2010
Journal articles hal-02169477v1
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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.
Journal of Computational Physics, 2017, 333, pp.387-408. ⟨10.1016/⟩
Journal articles hal-01133786v2
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Pore fluid pressure diffusion in defluidizing granular columns

Santiago Montserrat , Aldo Tamburrino , Olivier Roche , Yarko Niño
Journal of Geophysical Research: Earth Surface, 2012, 117 (6), pp.F02034. ⟨10.1029/2011JF002164⟩
Journal articles hal-00720261v1

Depositional processes and gas pore pressure in pyroclastic flows: an experimental perspective

Olivier Roche
Bulletin of Volcanology, 2012, 74, pp.1807-1820. ⟨10.1007/s00445-012-0639-4⟩
Journal articles istex hal-00793602v1

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
Earth and Planetary Science Letters, 2021, 571, ⟨10.1016/j.epsl.2021.117114⟩
Journal articles insu-03708920v1

Volcanic Hazards

Raphael Paris , Philipson Bani , Magdalena Oryaëlle Chevrel , Franck Donnadieu , Julia Eychenne et al.
Jean-François Lénat, University of Clermont-Ferrand, France. Hazards and Monitoring of Volcanic Activity 1 - Geological and Historic Approaches, ISTE; WILEY, pp.75-138, 2022, SCIENCES - Litosphere-Asthenosphere Interactions, 9781789450439
Book sections hal-03877139v1

Validating the combined PLUME-MoM and HYSPLIT numerical models using field data from Ecuadorian volcanoes

Alessandro Tadini , G. Guillin , Olivier Roche , Pablo Samaniego , N. Azzoui et al.
Cities on volcanoes, Sep 2018, Naples, Italy
Conference poster hal-02453916v1

Developing probabilistic tephra fallout hazard maps for Cotopaxi and Guagua Pichincha volcanoes, Ecuador, with uncertainty quantification

Alessandro Tadini , Olivier Roche , Pablo Samaniego , A. Guillin , N. Azzaoui et al.
AGU Fall meeting, Dec 2019, San Francisco, United States
Conference poster hal-02453759v1

Evolution of Irruputuncu volcano, Central Andes, northern Chile

I. Rodríguez , Olivier Roche , Séverine Moune , F. Aguilera , E. Campos et al.
Journal of South American Earth Sciences, 2015, 63, pp.385 - 399. ⟨10.1016/j.jsames.2015.08.012⟩
Journal articles hal-01914263v1

Inviscid behaviour of fines-rich pyroclastic flows inferred from experiments on gas–particle mixtures

Olivier Roche , R Gilbertson , J Phillips , R Sparks
Earth and Planetary Science Letters, 2005, 240 (2), pp.401 - 414. ⟨10.1016/j.epsl.2005.09.053⟩
Journal articles istex hal-01914230v1

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 et al.
Granular Matter, 2016, 18 (1), ⟨10.1007/s10035-016-0604-6⟩
Journal articles hal-01637427v1