Renaud Toussaint

• Hibert, Clément; Noel, Francois; Toe, David; Talib, Miloud; Desrues, Mathilde & Wyser, Emmanuel [Show all 11 contributors for this article] (2024). Machine learning prediction of the mass and the velocity of controlled single-block rockfalls from the seismic waves they generate. Earth Surface Dynamics. ISSN 2196-6311. 12(3), p. 641–656. doi: 10.5194/esurf-12-641-2024.
• Abbasov, Rashad; Fahs, Marwan; Younes, Anis; Nowamooz, Hossein; Måløy, Knut Jørgen & Toussaint, Renaud (2024). Modeling rainfall-induced landslide using the concept of local factor of safety: Uncertainty propagation and sensitivity analysis. Computers and geotechnics. ISSN 0266-352X. 167. doi: 10.1016/j.compgeo.2024.106102.
• Kozlowski Pitombeira Reis, Paula; Moura, Marcel; Linga, Gaute; Rikvold, Per Arne; Toussaint, Renaud & Flekkøy, Eirik Grude [Show all 7 contributors for this article] (2023). A simplified pore-scale model for slow drainage including film-flow effects. Advances in Water Resources. ISSN 0309-1708. 182. doi: 10.1016/j.advwatres.2023.104580. Full text in Research Archive
• Ben-Zeev, Shahar; Goren, Liran; Toussaint, Renaud & Aharonov, Einat (2023). Drainage explains soil liquefaction beyond the earthquake near-field. Nature Communications. ISSN 2041-1723. 14(1). doi: 10.1038/s41467-023-41405-4. Full text in Research Archive
• Flekkøy, Eirik Grude & Toussaint, Renaud (2023). Statistical implications of the n = 1 observation of 1I/'Oumuamua. Monthly Notices of the Royal Astronomical Society: Letters (MNRAS Letters). ISSN 1745-3925. 523(1), p. L9–L14. doi: 10.1093/mnrasl/slad049. Full text in Research Archive
• Bachelet, V.; Mangeney, A.; Toussaint, Renaud; de Rosny, Rosny; Arran, M.I. & Farin, M. [Show all 7 contributors for this article] (2023). Acoustic Emissions of Nearly Steady and Uniform Granular Flows: A Proxy for Flow Dynamics and Velocity Fluctuations. Journal of Geophysical Research (JGR): Earth Surface. ISSN 2169-9003. 128(4). doi: 10.1029/2022JF006990. Full text in Research Archive
• Noel, Francois; Nordang, Synnøve Flugekvam; Jaboyedoff, Michel; Travelletti, Julien; Matasci, Battista & Digout, Michaël [Show all 16 contributors for this article] (2023). Highly energetic rockfalls: back analysis of the 2015 event from the Mel de la Niva, Switzerland. Landslides. Journal of the International Consortium on Landslides. ISSN 1612-510X. doi: 10.1007/s10346-023-02054-2. Full text in Research Archive
• Koehn, Daniel; Kelka, Ulrich; Toussaint, Renaud; Siegel, Coralie; Mullen, Gary & Boyce, Adrian [Show all 7 contributors for this article] (2022). Outcrop scale mixing enhanced by permeability variations: the role of stationary and travelling waves of high saturation indices. Geological Magazine. ISSN 0016-7568. 159(11-12), p. 2279–2292. doi: 10.1017/S001675682200070X. Full text in Research Archive
• Vincent-Dospital, Tom Yannick Yves; Moura, Marcel; Toussaint, Renaud & Måløy, Knut Jørgen (2022). Stable and unstable capillary fingering in porous media with a gradient in grain size. Communications Physics. ISSN 2399-3650. 5(1). doi: 10.1038/s42005-022-01072-1. Full text in Research Archive
• Alonso-Llanes, L.; Martinez Roman, Etien; Batista-Leyva, A. J; Toussaint, Renaud & Altshuler, E. (2022). Continuous to intermittent flows in growing granular heaps. Physical Review E (PRE). ISSN 2470-0045. 106(1). doi: 10.1103/PhysRevE.106.014904.
• Köehn, D.; Köehler, S.; Toussaint, Renaud; Ghani, I. & Stollhofen, H. (2022). Scaling analysis, correlation length and compaction estimates of natural and simulated stylolites. Journal of Structural Geology. ISSN 0191-8141. 161. doi: 10.1016/j.jsg.2022.104670.
• Brodin, Joachim Falck; Rikvold, Per Arne; Moura, Marcel; Toussaint, Renaud & Måløy, Knut Jørgen (2022). Competing Gravitational and Viscous Effects in 3D Two-Phase Flow Investigated With a Table-Top Optical Scanner. Frontiers in Physics. ISSN 2296-424X. 10. doi: 10.3389/fphy.2022.936915. Full text in Research Archive
• Brodin, Joachim Falck; Moura, Marcel; Toussaint, Renaud; Måløy, Knut Jørgen & Rikvold, Per Arne (2022). Visualization by optical fluorescence of two-phase flow in a three-dimensional porous medium. Journal of Physics: Conference Series (JPCS). ISSN 1742-6588. 2241. doi: 10.1088/1742-6596/2241/1/012004. Full text in Research Archive
• Alonso-Llanes, L.; Sánchez-Colina, G.; Batista-Leyva, A.J.; Clément, C.; Altshuler, E. & Toussaint, Renaud (2022). Sink versus tilt penetration into shaken dry granular matter: The role of the foundation. Physical Review E (PRE). ISSN 2470-0045. 105(2). doi: 10.1103/PhysRevE.105.024903. Full text in Research Archive
• Meghraoui, Mustapha; Toussaint, Renaud & Aksoy, Murat Ersen (2021). The slip deficit on the North Anatolian Fault (Turkey) in the Marmara Sea: insights from paleoseismicity, seismicity and geodetic data. Mediterranean Geoscience Reviews. ISSN 2661-8648. 3(1), p. 45–56. doi: 10.1007/s42990-021-00053-w.
• Arran, Matthew I.; Mangeney, Anne; De Rosny, Julien; Farin, Maxime; Toussaint, Renaud & Roche, Olivier (2021). Laboratory Landquakes: Insights From Experiments Into the High‐Frequency Seismic Signal Generated by Geophysical Granular Flows. Journal of Geophysical Research (JGR): Earth Surface. ISSN 2169-9003. 126(5). doi: 10.1029/2021JF006172. Full text in Research Archive
• Koehn, Daniel; Piazolo, Sandra; Beaudoin, Nicolas; Kelka, Ulrich; Spruzeniece, Liene & Putnis, Christine V [Show all 7 contributors for this article] (2021). Relative rates of fluid advection, elemental diffusion and replacement govern reaction front patterns. Earth and Planetary Science Letters. ISSN 0012-821X. 565. doi: 10.1016/j.epsl.2021.116950. Full text in Research Archive
• Måløy, Knut Jørgen; Moura, Marcel; Hansen, Alex; Flekkøy, Eirik Grude & Toussaint, Renaud (2021). Burst Dynamics, Upscaling and Dissipation of Slow Drainage in Porous Media. Frontiers in Physics. ISSN 2296-424X. 9. doi: 10.3389/fphy.2021.796019. Full text in Research Archive
• Vincent-Dospital, Tom; Toussaint, Renaud & Måløy, Knut Jørgen (2021). Heat Emitting Damage in Skin: A Thermal Pathway for Mechanical Algesia. Frontiers in Neuroscience. ISSN 1662-4548. 15. doi: 10.3389/fnins.2021.780623. Full text in Research Archive
• Vincent-Dospital, Tom; Cochard, Alain; Santucci, Stephane; Måløy, Knut Jørgen & Toussaint, Renaud (2021). Thermally activated intermittent dynamics of creeping crack fronts along disordered interfaces. Scientific Reports. ISSN 2045-2322. 11. doi: 10.1038/s41598-021-98556-x. Full text in Research Archive
• Vincent-Dospital, Tom; Steyer, Alain; Renard, Francois & Toussaint, Renaud (2021). Frictional anisotropy of 3D-printed fault surfaces. Frontiers in Earth Science. ISSN 2296-6463. doi: 10.3389/feart.2021.627823. Full text in Research Archive Show summary

  The surface morphology of faults controls the spatial anisotropy of their frictional properties, and hence their mechanical stability. Such anisotropy is only rarely studied in seismology models of fault slip, although it might be paramount to understand the seismic rupture in particular areas, notably where slip occurs in a direction different from that of the main striations of the fault. To quantify how the anisotropy of fault surfaces affects the friction coefficient during sliding, we sheared synthetic fault planes made of plaster of Paris. These fault planes were produced by 3D-printing real striated fault surfaces whose 3D roughness was measured in the field at spatial scales from millimeters to meters. Here, we show how the 3D-printing technology can help for the study of frictional slip. Results show that fault anisotropy controls the coefficient of static friction, with the friction coefficient along the striations being three to four times smaller than the friction coefficient along the orientation perpendicular to the striations. This is true both at the meter and the millimeter scales. The anisotropy in friction and the average coefficient of static friction are also shown to decrease with the normal stress applied to the faults, as a result of the increased surface wear under increased loading.

• Vincent-Dospital, Tom; Toussaint, Renaud; Cochard, Alain; Flekkøy, Eirik Grude & Måløy, Knut Jørgen (2021). Thermal dissipation as both the strength and weakness of matter. A material failure prediction by monitoring creep. Soft Matter. ISSN 1744-683X. 17(15), p. 4143–4150. doi: 10.1039/d0sm02089c. Full text in Research Archive Show summary

  In any domain involving some stressed solids, that is, from seismology to general engineering, the strength of matter is a paramount feature to understand. We here discuss the ability of a simple thermally activated sub-critical model, which includes the auto-induced thermal evolution of cracks tips, to predict the catastrophic failure of a vast range of materials. It is in particular shown that the intrinsic surface energy barrier, for breaking the atomic bonds of many solids, can be easily deduced from the slow creeping dynamics of a crack. This intrinsic barrier is however higher than the macroscopic load threshold at which brittle matter brutally fails, possibly as a result of thermal activation and of a thermal weakening mechanism. We propose a novel method to compute this macroscopic energy release rate of rupture, Ga, solely from monitoring slow creep, and we show that this reproduces the experimental values within 50% accuracy over twenty different materials, and over more than four decades of fracture energy.

• Vincent-Dospital, Tom & Toussaint, Renaud (2021). Thermo-mechanical pain: the signaling role of heat dissipation in biological tissues. New Journal of Physics. ISSN 1367-2630. 23. doi: 10.1088/1367-2630/abe444. Full text in Research Archive Show summary

  Mechanical algesia is an important process for the preservation of living organisms, allowing potentially life-saving reflexes or decisions when given body parts are stressed. Yet, its various underlying mechanisms remain to be fully unravelled. Here, we quantitatively discuss how the detection of painful mechanical stimuli by the human central nervous system may, partly, rely on thermal measurements. Indeed, most fractures in a body, including microscopic ones, release some heat, which diffuses in the surrounding tissues. Through this physical process, the thermo-sensitive TRP proteins, that translate abnormal temperatures into action potentials, shall be sensitive to damaging mechanical inputs. The implication of these polymodal receptors in mechanical algesia has been regularly reported, and we here provide a physical explanation for the coupling between thermal and mechanical pain. In particular, in the human skin, we show how the neighbouring neurites of a broken collagen fiber can undergo a sudden thermal elevation that ranges from a fraction to tens of degrees. As this theoretical temperature anomaly lies in the sensibility range of the TRPV3 and TRPV1 cation channels, known to trigger action potentials in the neural system, a degree of mechanical pain can hence be generated.

• Vincent-Dospital, Tom; Toussaint, Renaud; Santucci, Stephane; Vanel, Loïc; Bonamy, Daniel & Hattali, Lamine [Show all 9 contributors for this article] (2020). How heat controls fracture: the thermodynamics of creeping and avalanching cracks. Soft Matter. ISSN 1744-683X. 16(41), p. 9590–9602. doi: 10.1039/D0SM01062F. Full text in Research Archive Show summary

  While of paramount importance in material science, the dynamics of cracks still lacks a complete physical explanation. The transition from their slow creep behavior to a fast propagation regime is a notable key, as it leads to full material failure if the size of a fast avalanche reaches that of the system. We here show that a simple thermodynamics approach can actually account for such complex crack dynamics, and in particular for the non-monotonic force-velocity curves commonly observed in mechanical tests on various materials. We consider a thermally activated failure process that is coupled with the production and the diffusion of heat at the fracture tip. In this framework, the rise in temperature only affects the sub-critical crack dynamics and not the mechanical properties of the material. We show that this description can quantitatively reproduce the rupture of two different polymeric materials (namely, the mode I opening of polymethylmethacrylate (PMMA) plates, and the peeling of pressure sensitive adhesive (PSA) tapes), from the very slow to the very fast fracturing regimes, over seven to nine decades of crack propagation velocities. In particular, the fastest regime is obtained with an increase of temperature of thousands of kelvins, on the molecular scale around the crack tip. Although surprising, such an extreme temperature is actually consistent with different experimental observations that accompany the fast propagation of cracks, namely, fractoluminescence (i.e., the emission of visible light during rupture) and a complex morphology of post-mortem fracture surfaces, which could be due to the sublimation of bubbles.

• Vincent-Dospital, Tom; Toussaint, Renaud; Cochard, Alain; Måløy, Knut Jørgen & Flekkøy, Eirik Grude (2020). Thermal weakening of cracks and brittle-ductile transition of matter: A phase model. PHYSICAL REVIEW MATERIALS. ISSN 2475-9953. 4(2). doi: 10.1103/PhysRevMaterials.4.023604. Full text in Research Archive Show summary

  We present a model for the thermally activated propagation of cracks in elastic matrices. The propagation is considered as a subcritical phenomenon, the kinetics of which is described by an Arrhenius law. In this law, we take the thermal evolution of the crack front into account, assuming that a portion of the released mechanical energy is transformed into heat in a zone surrounding the tip. We show that such a model leads to a two-phase crack propagation: the first phase at low velocity in which the temperature elevation is of little effect and the propagation is mainly governed by the mechanical load and by the toughness of the medium, and the second phase in which the crack is thermally weakened and propagates at greater velocity. We illustrate, with numerical simulations of mode I cracks propagating in thin disordered media, how such a dual behavior can explain the usual stick-slip in brittle fracturing. In addition, we predict the existence of a limiting ambient temperature above which the weakened phase ceases to exist and we propose this critical phenomenon as a novel explanation for the brittle-ductile transition of solids.

• Ayaz, Atta-Ul-Monem; Toussaint, Renaud; Schäfer, Gerhard & Måløy, Knut Jørgen (2020). Gravitational and Finite-Size Effects On Pressure Saturation Curves During Drainage. Water Resources Research. ISSN 0043-1397. 56(10). doi: 10.1029/2019WR026279. Full text in Research Archive
• Koehn, Daniel; Piazolo, Sandra; Sachau, Till & Toussaint, Renaud (2020). Fracturing and Porosity Channeling in Fluid Overpressure Zones in the Shallow Earth's Crust. Geofluids. ISSN 1468-8115. doi: 10.1155/2020/7621759. Full text in Research Archive
• Xu, Le; Szymczak, Piotr; Toussaint, Renaud; Flekkøy, Eirik Grude & Måløy, Knut Jørgen (2020). Dissolution phase diagram in radial geometry. Frontiers in Physics. ISSN 2296-424X. 8. doi: 10.3389/fphy.2020.00369. Full text in Research Archive Show summary

  Fractures play an important role as flow paths in porous media. When an undersaturated reactive fluid is flowing in a fracture, the dissolution process will alter the flow paths locally. Dissolution patterns grow slowly, but they may lead to a dramatic reorganization of the flow. Here, we study dissolution in a radial geometry, which is relevant for a number of practical applications, e.g., the acidization of oil reservoirs. Different dissolution patterns are presented in a phase diagram with the Péclet and Damköhler numbers as parameters. We also analyze quantitatively the density of wormholes and the relation between the aperture roughness and the ramified patterns.

• Ben-Zeev, Shahar; Aharonov, Einat; Toussaint, Renaud; Parez, Stanislav & Goren, Liran (2020). Compaction front and pore fluid pressurization in horizontally shaken drained granular layers. Physical Review Fluids. ISSN 2469-990X. 5:054301(5), p. 1–24. doi: 10.1103/PhysRevFluids.5.054301. Full text in Research Archive
• Luu, Jane; Flekkøy, Eirik Grude & Toussaint, Renaud (2020). 'Oumuamua as a Cometary Fractal Aggregate: The "Dust Bunny" Model. Astrophysical Journal Letters. ISSN 2041-8205. 900(2). doi: 10.3847/2041-8213/abafa7.
• Moura, Marcel; Måløy, Knut Jørgen; Flekkøy, Eirik Grude & Toussaint, Renaud (2020). Intermittent Dynamics of Slow Drainage Experiments in Porous Media: Characterization Under Different Boundary Conditions. Frontiers in Physics. ISSN 2296-424X. 7. doi: 10.3389/fphy.2019.00217. Full text in Research Archive
• Farin, Maxime; Mangeney, Anne; De Rosny, Julien; Toussaint, Renaud & Trinh, Phuong‐Thu (2019). Relations between the characteristics of granular column collapses and resultant high‐frequency seismic signals. Journal of Geophysical Research (JGR): Earth Surface. ISSN 2169-9003. 124(12), p. 2987–3021. doi: 10.1029/2019JF005258. Full text in Research Archive
• Flekkøy, Eirik Grude; Luu, Jane & Toussaint, Renaud (2019). The interstellar object ’Oumuamua as a fractal dust aggregate. Astrophysical Journal Letters. ISSN 2041-8205. 885(2), p. 1–6. doi: 10.3847/2041-8213/ab4f78. Full text in Research Archive
• Aleksans, Janis; Koehn, Daniel; Toussaint, Renaud & Daniel, Guillaume (2019). Simulating Hydraulic Fracturing: Failure in soft versus hard rocks. Pure and Applied Geophysics (PAGEOPH). ISSN 0033-4553. 177, p. 2771–2789. doi: 10.1007/s00024-019-02376-0. Full text in Research Archive
• Moura, Marcel; Flekkøy, Eirik Grude; Måløy, Knut Jørgen; Schäfer, Gerhard & Toussaint, Renaud (2019). Connectivity enhancement due to film flow in porous media. Physical Review Fluids. ISSN 2469-990X. 4(9). doi: 10.1103/PhysRevFluids.4.094102. Full text in Research Archive
• Xu, Le; Szymczak, Piotr; Toussaint, Renaud; Flekkøy, Eirik Grude & Måløy, Knut Jørgen (2019). Experimental Observation of Dissolution Finger Growth in Radial Geometry. Frontiers in Physics. ISSN 2296-424X. 7(JULY), p. 1–10. doi: 10.3389/fphy.2019.00096. Full text in Research Archive
• Turquet, Antoine Leo; Toussaint, Renaud; Eriksen, Fredrik Kvalheim; Daniel, Guillaume; Lengline, Oliver & Flekkøy, Eirik Grude (2019). Source localization of microseismic emissions during pneumatic fracturing. Geophysical Research Letters. ISSN 0094-8276. 46(7), p. 3726–3733. doi: 10.1029/2019GL082198. Full text in Research Archive
• Kariche, Jugurtha; Meghraoui, Mustapha; Timoulali, Youssef; Cetin, Esra & Toussaint, Renaud (2018). The Al Hoceima earthquake sequence of 1994, 2004 and 2016: Stress transfer and poroelasticity in the Rif and Alboran Sea region. Geophysical Journal International. ISSN 0956-540X. 212(1), p. 42–53. doi: 10.1093/gji/ggx385. Full text in Research Archive
• Cochard, Alain; Lengliné, Olivier; Måløy, Knut Jørgen & Toussaint, Renaud (2018). Thermally activated crack fronts propagating in pinning disorder: simultaneous brittle/creep behaviour depending on scale. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. ISSN 1364-503X. 377(2136), p. 1–23. doi: 10.1098/rsta.2017.0399.
• Farin, Maxime; Mangeney, Anne; De Rosny, Julien; Toussaint, Renaud & Trinh, PT (2018). Link between the dynamics of granular flows and the generated seismic signal: insights from laboratory experiments. Journal of Geophysical Research (JGR): Earth Surface. ISSN 2169-9003. 123(6), p. 1407–1429. doi: 10.1029/2017JF004296. Full text in Research Archive
• Bachelet, Vincent; Mangeney, Anne; De Rosny, Julien; Toussaint, Renaud & Farin, Maxime (2018). Elastic wave generated by granular impact on rough and erodible surfaces. Journal of Applied Physics. ISSN 0021-8979. 123(4), p. 1–9. doi: 10.1063/1.5012979. Full text in Research Archive
• Turquet, Antoine Léo; Toussaint, Renaud; Eriksen, Fredrik Kvalheim; Daniel, Guillaume; Koehn, Daniel & Flekkøy, Eirik Grude (2018). Microseismic Emissions During Pneumatic Fracturing: A Numerical Model to Explain the Experiments. Journal of Geophysical Research (JGR): Solid Earth. ISSN 2169-9313. 123(8), p. 6922–6939. doi: 10.1029/2017JB014613. Full text in Research Archive
• Santucci, Stephane; Tallakstad, Ken Tore; Angheluta, Luiza; Laurson, Lasse; Toussaint, Renaud & Måløy, Knut Jørgen (2018). Avalanches and extreme value statistics in interfacial crackling dynamics. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. ISSN 1364-503X. 377(2136), p. 1–15. doi: 10.1098/rsta.2017.0394.
• Toussaint, Renaud; Aharonov, Einat; Koehn, Daniel; Gratier, Jean-Pierre; Ebner, Martin & Baud, Patrick [Show all 8 contributors for this article] (2018). Stylolites: A review. Journal of Structural Geology. ISSN 0191-8141. 114, p. 163–195. doi: 10.1016/j.jsg.2018.05.003. Full text in Research Archive
• Eriksen, Fredrik Kvalheim; Toussaint, Renaud; Turquet, Antoine Léo; Måløy, Knut Jørgen & Flekkøy, Eirik Grude (2018). Pressure evolution and deformation of confined granular media during pneumatic fracturing. Physical Review E (PRE). ISSN 2470-0045. 97(1), p. 1–19. doi: 10.1103/PhysRevE.97.012908. Full text in Research Archive
• Clement, C; Toussaint, Renaud; Stojanova, M. & Aharonov, E. (2018). Sinking during earthquakes: Critical acceleration criteria control drained soil liquefaction. Physical Review E (PRE). ISSN 2470-0045. 97(2). doi: 10.1103/PhysRevE.97.022905. Full text in Research Archive
• Xu, Le; Marks, Benjy; Toussaint, Renaud; Flekkøy, Eirik Grude & Måløy, Knut Jørgen (2018). Dispersion in fractures with ramified dissolution patterns. Frontiers in Physics. ISSN 2296-424X. 6. doi: 10.3389/fphy.2018.00029. Full text in Research Archive
• Eriksen, Jon Alm; Toussaint, Renaud; Måløy, Knut Jørgen; Flekkøy, Eirik Grude; Galland, Olivier & Sandnes, Bjørnar (2018). Pattern formation of frictional fingers in a gravitational potential. Physical Review Fluids. ISSN 2469-990X. 3(1). doi: 10.1103/PhysRevFluids.3.013801. Full text in Research Archive
• Moura, Marcel; Måløy, Knut Jørgen; Flekkøy, Eirik Grude & Toussaint, Renaud (2017). Verification of a Dynamic Scaling for the Pair Correlation Function during the Slow Drainage of a Porous Medium. Physical Review Letters. ISSN 0031-9007. 119(15). doi: 10.1103/PhysRevLett.119.154503. Full text in Research Archive
• Moura, Marcel; Måløy, Knut Jørgen & Toussaint, Renaud (2017). Critical behavior in porous media flow. Europhysics letters. ISSN 0295-5075. 118(1). doi: 10.1209/0295-5075/118/14004. Full text in Research Archive
• Eriksen, Fredrik Kvalheim; Toussaint, Renaud; Turquet, Antoine Léo; Måløy, Knut Jørgen & Flekkøy, Eirik Grude (2017). Pneumatic fractures in confined granular media. Physical Review E (PRE). ISSN 2470-0045. 95(6). doi: 10.1103/PhysRevE.95.062901. Full text in Research Archive
• Flekkøy, Eirik Grude; Pride, Steven R. & Toussaint, Renaud (2017). Onsager symmetry from mesoscopic time reversibility and the hydrodynamic dispersion tensor for coarse-grained systems. Physical Review E (PRE). ISSN 2470-0045. 95. doi: 10.1103/PhysRevE.95.022136.
• Aben, F.M.; Doan, ML; Mitchell, T.M.; Toussaint, Renaud; Reuschle, T. & Fondriest, Michele [Show all 8 contributors for this article] (2016). Dynamic fracturing by successive coseismic loadings leads to pulverization in active fault zones. Journal of Geophysical Research (JGR): Biogeosciences. ISSN 2169-8953. 121(4), p. 2338–2360. doi: 10.1002/2015JB012542.
• Moura, Marcel; Fiorentino, Eve-Agnès; Måløy, Knut Jørgen; Schäfer, G. & Toussaint, Renaud (2015). Impact of sample geometry on the measurement of pressure-saturation curves: Experiments and simulations. Water Resources Research. ISSN 0043-1397. 51(11), p. 8900–8926. doi: 10.1002/2015WR017196. Full text in Research Archive
• Eriksen, Jon Alm; Toussaint, Renaud; Måløy, Knut Jørgen; Flekkøy, Eirik Grude & Sandnes, Bjørnar (2015). Numerical approach to frictional fingers. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics. ISSN 1539-3755. 92(3). doi: 10.1103/PhysRevE.92.032203.
• Eriksen, Jon Alm; Marks, Benjy; Sandnes, Bjørnar & Toussaint, Renaud (2015). Bubbles breaking the wall: Two-dimensional stress and stability analysis. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics. ISSN 1539-3755. 91(5). doi: 10.1103/PhysRevE.91.052204.
• Niebling, Michael; Tallakstad, Ken Tore; Toussaint, Renaud & Måløy, Knut Jørgen (2014). Direct velocity measurement of a turbulent shear flow in a planar Couette cell. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics. ISSN 1539-3755. 89(1). doi: 10.1103/PhysRevE.89.013026.
• Neuville, Amelie; Flekkøy, Eirik Grude & Toussaint, Renaud (2013). Influence of asperities on fluid and thermal flow in a fracture: A coupled lattice Boltzmann study. Journal of Geophysical Research (JGR): Solid Earth. ISSN 2169-9313. 118(7), p. 3394–3407. doi: 10.1002/jgrb.50256.

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• Toussaint, Renaud; Sandnes, Bjørnar; Koehn, Daniel; Szymczak, Piotr & Aharonov, Einat (2017). Flow and Transformations in Porous Media. Frontiers Media SA. ISBN 978-2-88945-077-0. 202 p.

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• Brodin, Joachim Falck; Rikvold, Per Arne; Moura, Marcel; Pierce, James Kevin; Toussaint, Renaud & Måløy, Knut Jørgen (2023). Experimental investigation of two phase flow with a table top optical scanner: the competition between viscous and gravitational effects under different boundary conditions.
• Moura, Marcel; Kozlowski Pitombeira Reis, Paula; Schäfer, Gerhard; Toussaint, Renaud; Flekkøy, Eirik Grude & Rikvold, Per Arne [Show all 7 contributors for this article] (2023). Thin film flow: fluid transport via thin liquid films in slow porous media flows.
• Kozlowski Pitombeira Reis, Paula; Moura, Marcel; Linga, Gaute; Rikvold, Per Arne; Toussaint, Renaud & Flekkøy, Eirik Grude [Show all 7 contributors for this article] (2023). Numerical analysis of drainage in porous media using network models.
• Moura, Marcel; Kozlowski Pitombeira Reis, Paula; Eriksen, Fredrik Kvalheim; Turquet, Antoine Léo; Flekkøy, Eirik Grude & Toussaint, Renaud [Show all 7 contributors for this article] (2022). Complexity: “More is Different” also in porous media flows.
• Moura, Marcel; Brodin, Joachim Falck; Måløy, Knut Jørgen; Rikvold, Per Arne; Flekkøy, Eirik Grude & Jankov, Mihailo [Show all 8 contributors for this article] (2022). Thin film flow: fluid transport and pollution spreading in porous media.
• Kyriakopoulos, C; Barth, N.C.; Koelemeijer, Paula; Winterbourne, Jeffrey & Toussaint, Renaud (2021). 3D Printing in Geology and Geophysics: A New World of Opportunities in Research, Outreach, and Education. Frontiers in Earth Science. ISSN 2296-6463. doi: 10.3389/feart.2021.734291.
• Moura, Marcel; Måløy, Knut Jørgen; Flekkøy, Eirik Grude & Toussaint, Renaud (2021). Coffee is for drinking, tea is for porous media science: intermittent burst dynamics in slow drainage experiments in porous media.
• Moura, Marcel; Eriksen, Fredrik Kvalheim; Turquet, Antoine Leo; Flekkøy, Eirik Grude; Toussaint, Renaud & Jankov, Mihailo (2021). Complexity: “More is Different” also in porous media flows.
• Turquet, Antoine Leo; Toussaint, Renaud; Eriksen, Fredrik Kvalheim; Flekkøy, Eirik Grude & Måløy, Knut Jørgen (2020). Reverse Engineering Earthquakes using Lab-scale Replicas: Application to Mw5. 5 2017 Pohang Earthquake.
• Måløy, Knut Jørgen; Brodin, Joachim Falck; Rikvold, Per Arne; Moura, Marcel; Toussaint, Renaud & Schaefer, Gerhard [Show all 7 contributors for this article] (2020). Drainage in porous media under influence of a gravitational field.
• Brodin, Joachim Falck; Måløy, Knut Jørgen; Moura, Marcel; Toussaint, Renaud & Rikvold, Per Arne (2020). An experimental study of the interplay between viscous, capillary and gravitational forces in two-phase flow in a three-dimensional porous medium. Show summary

  We study the interplay between viscous, capillary and gravitational forces in two-phase flow in a threedimensional porous medium, with the use of an optical scanner based on index-matched medium and fluorescent fluids. A more viscous, denser, fluid is injected into a less viscous, less dense fluid in a 3D porous medium, comprised of randomly packed glass beads of uniform size. We tune the injection rate over 10 experiments. Experience from the 2D scenario suggests that with a slow injection rate capillary and gravitational forces will dominate, and we should observe an unstable displacement and fingering. Conversely, with a high injection rate, viscous forces will dominate, leading to a more stable displacement and a narrower invasion front. How do the 2D findings hold up in the 3D scenario? We confirm the qualitative findings from the 2D experiments and establish a clear regime change, from unstable to stable displacement. We seek to derive a dimensionless number to quantify the relevant balance of forces and consider this number in relation to the invasion pattern. We characterize the invasion by Minkowski-functionals and fractal dimensions and seek relations between the found geometries and the derived dimensionless numbers.

• Moura, Marcel; Måløy, Knut Jørgen; Flekkøy, Eirik Grude; Schäfer, Gerhard & Toussaint, Renaud (2020). Thin film flow: fluid transport via thin liquid films in slow porous media flows.
• Moura, Marcel; Måløy, Knut Jørgen; Flekkøy, Eirik Grude; Schäfer, Gerhard & Toussaint, Renaud (2019). Unconventional transport mechanisms in porous media: connectivity enhancement due to thin film flow.
• Moura, Marcel; Måløy, Knut Jørgen; Flekkøy, Eirik Grude; Schäfer, Gerhard & Toussaint, Renaud (2019). Unconventional transport mechanisms in porous media: connectivity enhancement due to thin film flow.
• Hibert, Clément; Talib, Miloud; Noël, François; Gracchi, Teresa; Bourrier, Franck & Brenguier, Ombeline [Show all 12 contributors for this article] (2019). Analysis of the dynamics of supervised single-block rockfalls from intra-block accelerometers, seismology and remote sensing.
• Vincent-Dospital, Tom; Toussaint, Renaud; Cochard, Alain; Måløy, Knut Jørgen; Flekkøy, Eirik Grude & Santucci, Stephane [Show all 7 contributors for this article] (2019). Hot cracks or cool cracks? A model for the brittle-ductile transition of solids.
• Noël, François; Wyser, Emmanuel; Jaboyedoff, Michel; Hibert, Clément; Talib, Miloud & Malet, Jean-Philippe [Show all 15 contributors for this article] (2019). Real-size rockfall experiment: Applying observed impact dynamics to 3D rockfall simulations on highly detailed terrain models.
• Kariche, Jugurtha; Meghraoui, Mustapha & Toussaint, Renaud (2019). Stress transfer and poroelasticity associated to the 2019 Ridgecrest (California) earthquake sequences.
• Arran, Matthew; Mangeney, Anne; De Rosny, Julien; Farin, Maxime & Toussaint, Renaud (2019). High-frequency Seismic Signals from Landslides: Insight from Laboratory Flows and DEM Simulations.
• Koelemeijer, Paula; Winterbourne, Jeffrey; Toussaint, Renaud & Zaroli, Christophe (2019). 3D printing the world: developing geophysical teaching materials and outreach packages.
• Måløy, Knut Jørgen; Eriksen, Jon Alm; Flekkøy, Eirik Grude; Toussaint, Renaud; Galland, Olivier & Sandnes, Bjørnar (2019). Pattern formation of frictional fingers in a gravitational field.
• Måløy, Knut Jørgen; Eriksen, Jon Alm; Flekkøy, Eirik Grude; Toussaint, Renaud; Galland, Olivier & Sandnes, Bjørnar (2019). Pattern formation of frictional fingers in a gravitational potential.
• Xu, Le; Marks, Benjy; Toussaint, Renaud; Flekkøy, Eirik Grude & Måløy, Knut Jørgen (2018). Dissolution Patterns and Dispersion in Fractures.
• Moura, Marcel; Måløy, Knut Jørgen; Flekkøy, Eirik Grude & Toussaint, Renaud (2018). Burst dynamics in porous media drainage flows.
• Moura, Marcel; Måløy, Knut Jørgen; Flekkøy, Eirik Grude & Toussaint, Renaud (2018). Burst dynamics slow drainage in porous media.
• Moura, Marcel; Dumazer, Guillaume; Eriksen, Fredrik Kvalheim; Måløy, Knut Jørgen; Flekkøy, Eirik Grude & Toussaint, Renaud (2018). Marangoni induced fracturing in two-dimensional frictional flows.
• Moura, Marcel; Måløy, Knut Jørgen; Flekkøy, Eirik Grude & Toussaint, Renaud (2018). Direct experimental measurement of the pair correlation function during the slow drainage of a porous medium.
• Moura, Marcel; Måløy, Knut Jørgen & Toussaint, Renaud (2018). Intermittent burst dynamics during slow drainage flows.
• Moura, Marcel; Måløy, Knut Jørgen & Toussaint, Renaud (2017). Intermittent burst dynamics during slow drainage flows.
• Moura, Marcel; Måløy, Knut Jørgen & Toussaint, Renaud (2017). Intermittent burst dynamics in porous media: experiments on slow drainage flows.
• Moura, Marcel; Måløy, Knut Jørgen & Toussaint, Renaud (2017). Intermittent burst dynamics during slow drainage flows.
• Moura, Marcel; Måløy, Knut Jørgen & Toussaint, Renaud (2016). The pattern and the patterner.
• Moura, Marcel; Måløy, Knut Jørgen; Flekkøy, Eirik Grude & Toussaint, Renaud (2016). Burst dynamics in quasi-2D slow drainage experiments in porous media.
• Turkaya, Semih; Toussaint, Renaud; Eriksen, Fredrik Kvalheim; Lengline, Oliver; Daniel, Guillaume & Flekkøy, Eirik Grude (2016). Note: Localization based on estimated source energy homogeneity. Review of Scientific Instruments. ISSN 0034-6748. 87:096101(9), p. 1–3. doi: 10.1063/1.4962407.
• Moura, Marcel; Måløy, Knut Jørgen; Fiorentino, Eve-Agnès & Toussaint, Renaud (2015). Two-phase flow in a quasi-2D porous medium: boundary effects in the measurement of pressure-saturation relationships.
• Moura, Marcel; Fiorentino, Eve-Agnès; Måløy, Knut Jørgen; Toussaint, Renaud & Schäfer, Gerhard (2015). Experiments on two-phase flow in a quasi-2D porous medium: investigation of boundary effects in the measurement of pressure-saturation relationships.
• Moura, Marcel; Fiorentino, Eve-Agnès; Måløy, Knut Jørgen; Toussaint, Renaud & Schäfer, Gerhard (2015). Two-phase flow in a quasi-2D porous medium: investigation of boundary effects in the measurement of pressure-saturation relationships.
• Moura, Marcel; Fiorentino, Eve-Agnès; Måløy, Knut Jørgen; Schäfer, Gerhard & Toussaint, Renaud (2015). Two-phase flow in a quasi-2D porous medium: investigation of boundary effects in the measurement of pressure-saturation relationships.
• Moura, Marcel; Måløy, Knut Jørgen; Toussaint, Renaud & Santucci, Stephane (2014). Double talk: pressure-driven drainage of fluid from a quasi-two-dimensional porous medium / fracture nucleation in brittle materials.
• Moura, Marcel; Måløy, Knut Jørgen & Toussaint, Renaud (2014). Pressure-driven drainage of fluid from a quasi-two-dimensional porous medium.
• Moura, Marcel; Måløy, Knut Jørgen; Jankov, Mihailo & Toussaint, Renaud (2013). Experimental study of a two-phase flow in a quasi-two-dimensional porous medium.

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