Dag Kristian Dysthe

• Dziadkowiec, Joanna; Zareeipolgardani, Bahareh; Dysthe, Dag Kristian & Røyne, Anja (2019). Nucleation in confinement generates long-range repulsion between rough calcite surfaces. Scientific Reports.  ISSN 2045-2322.  9 . doi: 10.1038/s41598-019-45163-6
• Panahi, Hamed; Kobchenko, Maya; Meakin, Paul; Dysthe, Dag Kristian & Renard, Francois (2019). Fluid expulsion and microfracturing during the pyrolysis of an organic rich shale. Fuel.  ISSN 0016-2361.  235, s 1- 16 . doi: 10.1016/j.fuel.2018.07.069
• Sanchez, Jesus Rodriguez; Myszka, Barbara; Boccaccini, Aldo Roberto & Dysthe, Dag Kristian (2019). Setting behavior and bioactivity assessment of calcium carbonate cements. Journal of The American Ceramic Society.  ISSN 0002-7820.  102(11), s 6980- 6990 . doi: 10.1111/jace.16593
• Gløersen, Øyvind Nøstdahl; Losnegard, Thomas Johansen; Malthe-Sørenssen, Anders; Dysthe, Dag Kristian & Gilgien, Matthias (2018). Propulsive Power in Cross-Country Skiing: Application and Limitations of a Novel Wearable Sensor-Based Method During Roller Skiing. Frontiers in Physiology.  ISSN 1664-042X.  9, s 1- 14 . doi: 10.3389/fphys.2018.01631 Full text in Research Archive. Show summary

  Cross-country skiing is an endurance sport that requires extremely high maximal aerobic power. Due to downhill sections where the athletes can recover, skiersmust also have the ability to perform repeated efforts where metabolic power substantially exceeds maximal aerobic power. Since the duration of these supra-aerobic efforts is often in the order of seconds, heart rate, and pulmonary VO2 do not adequately reflect instantaneous metabolic power. Propulsive power (Pprop) is an alternative parameter that can be used to estimate metabolic power, but the validity of such calculations during cross-country skiing has rarely been addressed. The aim of this study was therefore twofold: to develop a procedure using small non-intrusive sensors attached to the athlete for estimating Pprop during roller-skiing and to evaluate its limits; and (2) to utilize this procedure to determine the Pprop generated by high-level skiers during a simulated distance race. Eight elite male cross-country skiers simulated a 15 km individual distance race on roller skis using ski skating techniques on a course (13.5 km) similar to World Cup skiing courses. Pprop was calculated using a combination of standalone and differential GNSS measurements and inertial measurement units. The method’s measurement error was assessed using a Monte Carlo simulation, sampling from the most relevant sources of error. Pprop decreased approximately linearly with skiing speed and acceleration, and was approximated by the equation Pprop(v, ˙v) = −0.54·v −0.71·˙v + 7.26 W·kg−1. Pprop was typically zero for skiing speeds >9 m·s−1, because the athletes transitioned to the tuck position. Peak Pprop was 8.35 ± 0.63 W·kg−1 and was typically attained during the final lap in the last major ascent, while average Pprop throughout the race was 3.35 ± 0.23 W·kg−1. The measurement error of Pprop increased with skiing speed, from 0.09 W·kg−1 at 2.0 m·s−1 to 0.58 W·kg−1 at 9.0 m·s−1. In summary, this study is the first to provide continuous measurements of Pprop for distance skiing, as well as the first to quantify the measurement error during roller skiing using the power balance principle. Therefore, these results provide novel insight into the pacing strategies employed by high-level skiers.

• Kohler, Felix; Gagliardi, Luca; Pierre-Louis, Olivier & Dysthe, Dag Kristian (2018). Cavity Formation in Confined Growing Crystals. Physical Review Letters.  ISSN 0031-9007.  121(9), s 1- 5 . doi: 10.1103/PhysRevLett.121.096101
• Li, Lei; Sanchez, Jesus Rodriguez; Kohler, Felix; Røyne, Anja & Dysthe, Dag Kristian (2018). Microfluidic control of nucleation and growth of CaCO3. Crystal Growth & Design.  ISSN 1528-7483.  18(8), s 4528- 4535 . doi: 10.1021/acs.cgd.8b00508 Full text in Research Archive.
• Panahi, Hamed; Kobchenko, Maya; Meakin, Paul; Dysthe, Dag Kristian & Renard, Francois (2018). In-situ imaging of fracture development during maturation of an organic-rich shale: Effects of heating rate and confinement. Marine and Petroleum Geology.  ISSN 0264-8172.  95, s 314- 327 . doi: 10.1016/j.marpetgeo.2018.05.002 Full text in Research Archive.
• Pluymakers, Anne Marie Henriette; Liu, J.; Kohler, Felix; Renard, Francois & Dysthe, Dag Kristian (2018). A high resolution interferometric method to measure local swelling due to CO2 exposure in coal and shale. International Journal of Coal Geology.  ISSN 0166-5162.  187, s 131- 142 . doi: 10.1016/j.coal.2018.01.007 Full text in Research Archive.
• Li, Lei; Kohler, Felix; Røyne, Anja & Dysthe, Dag Kristian (2017). Growth of calcite in confinement. Crystals.  ISSN 2073-4352.  7(12) . doi: 10.3390/cryst7120361
• Neuville, Amélie; Renaud, Louis; Luu, Thi Thuy; Minde, Mona Wetrhus; Jettestuen, Espen; Vinningland, Jan Ludvig; Hiorth, Aksel & Dysthe, Dag Kristian (2017). Xurography for microfluidics on a reactive solid. Lab on a Chip.  ISSN 1473-0197.  17(2), s 293- 303 . doi: 10.1039/c6lc01253a
• Høgberget, Jørgen; Røyne, Anja; Dysthe, Dag Kristian & Jettestuen, Espen (2016). Microscopic modeling of confined crystal growth and dissolution. Physical review. E.  ISSN 2470-0045.  94(2) . doi: 10.1103/PhysRevE.94.023005
• Keszthelyi, Dániel; Dysthe, Dag Kristian & Jamtveit, Bjørn (2016). Compaction of North-Sea Chalk by Pore-Failure and Pressure Solution in a Producing Reservoir. Frontiers in Physics.  ISSN 2296-424X. . doi: 10.3389/fphy.2016.00004
• Keszthelyi, Dániel; Dysthe, Dag Kristian & Jamtveit, Bjørn (2016). First principles model of carbonate compaction creep. Journal of Geophysical Research (JGR): Solid Earth.  ISSN 2169-9313.  121(5), s 3348- 3365 . doi: 10.1002/2015JB012481
• Renard, Francois Marie Paul L; Cordonnier, Benoit; Dysthe, Dag Kristian; Boller, Elodie; Tafforeau, Paul & Rack, Alexander (2016). A deformation rig for synchrotron microtomography studies of geomaterials under conditions down to 10 km depth in the Earth. Journal of Synchrotron Radiation.  ISSN 0909-0495.  23(4), s 1030- 1034 . doi: 10.1107/S1600577516008730
• Hafver, Andreas; Jettestuen, Espen; Kobchenko, Maya; Dysthe, Dag Kristian; Meakin, Paul & Malthe-Sørenssen, Anders (2014). Classification of fracture patterns by heterogeneity and topology. Europhysics letters.  ISSN 0295-5075.  105(5) . doi: 10.1209/0295-5075/105/56004
• Kobchenko, Maya; Hafver, Andreas; Jettestuen, Espen; Renard, Francois Marie Paul L; Galland, Olivier; Jamtveit, Bjørn; Meakin, Paul & Dysthe, Dag Kristian (2014). Evolution of a fracture network in an elastic medium with internal fluid generation and expulsion. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics.  ISSN 1539-3755.  90(5) . doi: 10.1103/PhysRevE.90.052801
• Farutin, Alexander; Rafai, Salima; Dysthe, Dag Kristian; Duperray, Alain; Peyla, Philippe & Misbah, Chaoqi (2013). Amoeboid Swimming: A Generic Self-Propulsion of Cells in Fluids by Means of Membrane Deformations. Physical Review Letters.  ISSN 0031-9007.  111(22) . doi: 10.1103/PhysRevLett.111.228102
• Gratier, Jean-Pierre; Dysthe, Dag Kristian & Renard, Francois Marie Paul L (2013). The Role of Pressure Solution Creep in the Ductility of the Earth's Upper Crust. Advances in Geophysics.  ISSN 0065-2687.  54, s 47- 179 . doi: 10.1016/B978-0-12-380940-7.00002-0
• Kobchenko, Maya; Hafver, Andreas; Jettestuen, Espen; Galland, Olivier; Renard, Francois Marie Paul L; Meakin, Paul; Jamtveit, Bjørn & Dysthe, Dag Kristian (2013). Drainage fracture networks in elastic solids with internal fluid generation. Europhysics letters.  ISSN 0295-5075.  102(6) . doi: 10.1209/0295-5075/102/66002
• Panahi, Hamed; Meakin, Paul; Renard, Francois Marie Paul L; Kobchenko, Maya; Scheibert, Julien; Mazzini, Adriano; Jamtveit, Bjørn; Malthe-Sørenssen, Anders & Dysthe, Dag Kristian (2013). A 4D Synchrotron X-Ray-Tomography Study of the Formation of Hydrocarbon-Migration Pathways in Heated Organic-Rich Shale. SPE Journal.  ISSN 1086-055X.  18(2), s 366- 377 . doi: 10.2118/162939-PA
• Rostom, Fatma; Røyne, Anja; Dysthe, Dag Kristian & Renard, Francois Marie Paul L (2013). Effect of fluid salinity on subcritical crack propagation in calcite. Tectonophysics.  ISSN 0040-1951.  583, s 68- 75 . doi: 10.1016/j.tecto.2012.10.023
• Gratier, Jean-Pierre; Frery, Emanuelle; Deschamps, Pierre; Røyne, Anja; Renard, Francois Marie Paul L; Dysthe, Dag Kristian; Ellouz-Zimmerman, Nadine & Hamelin, Bruno (2012). How travertine veins grow from top to bottom and lift the rocks above them: The effect of crystallization force. Geology.  ISSN 0091-7613.  40(11), s 1015- 1018 . doi: 10.1130/G33286.1
• Renard, Francois Marie Paul L; Beaupretre, Sophie; Voisin, Christophe; Zigone, Dimitri; Candela, Thibault; Dysthe, Dag Kristian & Gratier, Jean-Pierre (2012). Strength evolution of a reactive frictional interface is controlled by the dynamics of contacts and chemical effects. Earth and Planetary Science Letters.  ISSN 0012-821X.  341-344, s 20- 34 . doi: 10.1016/j.epsl.2012.04.048
• Røyne, Anja & Dysthe, Dag Kristian (2012). Rim formation on crystal faces growing in confinement. Journal of Crystal Growth.  ISSN 0022-0248.  346(1), s 89- 100 . doi: 10.1016/j.jcrysgro.2012.03.019
• Japsen, P.; Dysthe, Dag Kristian; Hartz, Ebbe Hvidegård; Stipp, SLS; Yarushina, Viktoriya M. & Jamtveit, Bjørn (2011). A compaction front in North Sea chalk. Journal of Geophysical Research (JGR): Solid Earth.  ISSN 2169-9313.  116 . doi: 10.1029/2011JB008564
• Kobchenko, Maya; Panahi, Hamed; Renard, Francois Marie Paul L; Dysthe, Dag Kristian; Malthe-Sørenssen, Anders; Mazzini, Adriano; Scheibert, Julien; Jamtveit, Bjørn & Meakin, Paul (2011). 4D imaging of fracturing in organic-rich shales during heating. Journal of Geophysical Research (JGR): Solid Earth.  ISSN 2169-9313.  116(12) . doi: 10.1029/2011JB008565
• Raufaste, Christophe; Jamtveit, Bjørn; John, Timm; Meakin, Paul & Dysthe, Dag Kristian (2011). The mechanism of porosity formation during solvent-mediated phase transformations. Proceedings of the Royal Society. Mathematical, Physical and Engineering Sciences.  ISSN 1364-5021.  467(2129), s 1408- 1426 . doi: 10.1098/rspa.2010.0469
• Røyne, Anja; Bisschop, Jan & Dysthe, Dag Kristian (2011). Experimental investigation of surface energy and subcritical crack growth in calcite. Journal of Geophysical Research (JGR): Solid Earth.  ISSN 2169-9313.  116 . doi: 10.1029/2010JB008033 Full text in Research Archive.
• Røyne, Anja; Meakin, Paul; Malthe-Sørenssen, Anders; Jamtveit, Bjørn & Dysthe, Dag Kristian (2011). Crack propagation driven by crystal growth. Europhysics letters.  ISSN 0295-5075.  96(2) . doi: 10.1209/0295-5075/96/24003
• Croizé, Delphine; Renard, Francois Marie Paul L; Bjørlykke, Knut & Dysthe, Dag Kristian (2010). Experimental calcite dissolution under stress: Evolution of grain contact microstructure during pressure solution creep. Journal of Geophysical Research (JGR): Solid Earth.  ISSN 2169-9313.  115 . doi: 10.1029/2010JB000869
• Hammer, Øyvind; Dysthe, Dag Kristian & Jamtveit, Bjørn (2010). Travertine terracing: patterns and mechanisms. Geological Society Special Publication.  ISSN 0305-8719.  336, s 345- 355 . doi: 10.1144/SP336.18
• Nermoen, Anders; Raufaste, Christophe; De Villiers, Simon Daniel; Jettestuen, Espen; Meakin, Paul & Dysthe, Dag Kristian (2010). Morphological transitions in partially gas-fluidized granular mixtures. Physical Review E. Statistical, Nonlinear, and Soft Matter Physics.  ISSN 1539-3755.  81(6) . doi: 10.1103/PhysRevE.81.061305
• Scheibert, Julien & Dysthe, Dag Kristian (2010). Role of friction-induced torque in stick-slip motion. Europhysics letters.  ISSN 0295-5075.  92(5) . doi: 10.1209/0295-5075/92/54001
• Jettestuen, Espen; Bisschop, Jan & Dysthe, Dag Kristian (2009). Dissolution–precipitation recrystallization of miscut crystal surfaces under stress. Journal of Crystal Growth.  ISSN 0022-0248.  311(6), s 1576- 1583 . doi: 10.1016/j.jcrysgro.2009.01.003
• Renard, Francois Marie Paul L; Dysthe, Dag Kristian; Feder, Jens; Meakin, Paul; Morris, SJS & Jamtveit, Bjørn (2009). Pattern formation during healing of fluid-filled cracks: an analog experiment. Geofluids.  ISSN 1468-8115.  9(4), s 365- 372 . doi: 10.1111/j.1468-8123.2009.00260.x
• Hammer, Øyvind; Hammer, O; Dysthe, DK; Lelu, B; Lund, Hanne; Lund, Halvor; Meakin, P & Jamtveit, B (2008). Calcite precipitation instability under laminar, open-channel flow. Geochimica et Cosmochimica Acta.  ISSN 0016-7037.  72(20), s 5009- 5021 . doi: 10.1016/j.gca.2008.07.028

View all works in Cristin

• Dziadkowiec, Joanna; Zareeipolgardani, Bahareh; Bratvold, Jon E.; Nilsen, Ola; Dysthe, Dag Kristian & Røyne, Anja (2019). Long-range repulsive forces between reactive calcite surfaces are generated due to nucleation in a confined solution.
• de Ruiter, Lisa; Austrheim, Håkon Olaf; Dysthe, Dag Kristian & Gunnæs, Anette Eleonora (2018). Quartz weathering associated with magnesium silicate hydrate cement precipitation.
• de Ruiter, Lisa; Austrheim, Håkon Olaf; Gunnæs, Anette Eleonora & Dysthe, Dag Kristian (2018). Quartz dissolution and M-S-H cement precipitation in a high pH ultramafic system.
• Neuville, Amélie; Renaud, Louis; Minde, Mona Wetrhus; Vinningland, Jan Ludvig; Hiorth, Aksel & Dysthe, Dag Kristian (2017). Can we get a better knowledge on dissolution processes in chalk by using microfluidic chips?.
• Ruiter, Lisa De; Austrheim, Håkon Olav & Dysthe, Dag Kristian (2017). Formation of magnesium silicate hydrate cement during lithification of ultramafic-rich glacial deposits.
• Ruiter, Lisa De; Austrheim, Håkon Olav & Dysthe, Dag Kristian (2017). Formation of magnesium silicate hydrate cement in the weathering zone of ultramafites.
• Sanchez, Jesus Rodriguez; Liberto, Teresa; Zhang, Qing; Barentine, Catherine & Dysthe, Dag Kristian (2017). Lab meeting: Rheological and long-term indentation creep properties of calcium carbonate cements.
• Sanchez, Jesus Rodriguez; Liberto, Teresa; Zhang, Qing; Barentine, Catherine & Dysthe, Dag Kristian (2017). Rheological and long-term indentation creep properties of calcium carbonate cements.
• Sanchez, Jesus Rodriguez; Myszka, Barbara; Dysthe, Dag Kristian & Boccaccini, Aldo (2017). Biomineralization study of calcium carbonate cements.
• Høgberget, Jørgen; Kohler, Felix; Røyne, Anja; Jettestuen, Espen & Dysthe, Dag Kristian (2016). Combining in situ Interferometry and Kinetic Monte Carlo to Study Mechanisms of Nanoconfined Crystallization.
• Neuville, Amélie & Dysthe, Dag Kristian (2016). JCR meeting for the Pore2Core project, experimental part.
• Neuville, Amélie; Luu, Thi Thuy & Dysthe, Dag Kristian (2016). Chalk-calcite-microfluidic experiments: construction and flooding of microsystems with reactive fluids.
• Neuville, Amélie; Renaud, Louis; Luu, Thi Thuy; Jettestuen, Espen; Vinningland, Jan Ludvig; Hiorth, Aksel & Dysthe, Dag Kristian (2016). Can we get more knowledge on solid dissolution processes using microfluidic chips?.
• Neuville, Amelie; Renaud, Louis; Luu, Thi Thuy; Vinningland, Jan Ludvig; Jettestuen, Espen; Dysthe, Dag Kristian & Hiorth, Aksel (2016). Xurography for microfluidics in reactive systems: the example of the calcite dissolution.
• Ruiter, Lisa De; Austrheim, Håkon Olav & Dysthe, Dag Kristian (2016). The lithification of ultramafic dominated till with magnesium silicate hydrate: a new green concrete.
• Sanchez, Jesus Rodriguez; Cordonnier, Benoit; Renard, Francois & Dysthe, Dag Kristian (2016). Transition between brittle and ductile behaviour on carbonate rocks: an X-ray tomographic analysis.
• Sanchez, Jesus Rodriguez & Dysthe, Dag Kristian (2016). A tour around research in the Depart. of Physics. First stop" NanoHeal: Nano-tailoring organo-mineral materials".
• Sanchez, Jesus Rodriguez & Dysthe, Dag Kristian (2016). Synthesis of calcium carbonate particles via continuous flow microfluidics.
• Neuville, Amelie; Vinningland, Jan Ludvig; Luu, Thi Thuy; Jettestuen, Espen; Dysthe, Dag Kristian & Hiorth, Aksel (2015). Microfluidic experiments: construction and flooding of microsystems with reactive fluids.
• Dysthe, Dag Kristian (2015). CO2 for EOR and storage in North sea chalk fields?.
• Dysthe, Dag Kristian & Austrheim, Håkon Olav (2015). Beyond research based teaching: Teaching interdisciplinary research and pushing students beyond their training.
• Dysthe, Dag Kristian & Austrheim, Håkon Olav (2015). Beyond research based teaching: Teaching interdisciplinary research and pushing students beyond their training.
• Dysthe, Dag Kristian; Neuville, Amélie; Luu, Thi Thuy; Kohler, Felix & Li, Lei (2015). Microfluidic Tools for Reactive Transport In Porous Media.
• Dysthe, Dag Kristian; Vinningland, Jan Ludvig & Neuville, Amélie (2015). Microfluidic tools for reactive transport in porous media.
• Høgberget, Jørgen; Røyne, Anja; Dysthe, Dag Kristian & Jettestuen, Espen (2015). Confined Crystal Growth and Dissolution.
• Keszthelyi, Dániel; Dysthe, Dag Kristian & Jamtveit, Bjørn (2015). A simple model of compaction in carbonates.
• Keszthelyi, Dániel; Dysthe, Dag Kristian & Jamtveit, Bjørn (2015). Compaction of North Sea Chalk - A new micromechanical mechanism of pore collapse and a statistical mechanical upscaling to predict Ekofisk subsidence.
• Keszthelyi, Dániel; Dysthe, Dag Kristian & Jamtveit, Bjørn (2015). Compaction of North-sea chalk by pore-failure and pressure solution.
• Keszthelyi, Dániel; Dysthe, Dag Kristian & Jamtveit, Bjørn (2015). Compaction of the Ekofisk oil reservoir - On small- and on large-scale.
• Keszthelyi, Dániel; Dysthe, Dag Kristian & Jamtveit, Bjørn (2015). Model of compaction in carbonates.
• Keszthelyi, Dániel; Dysthe, Dag Kristian & Jamtveit, Bjørn (2015). The mysterious subsidence of the seafloor due to oil production – How to predict it with a simple model?. EGU Blogs.
• Keszthelyi, Dániel; Jamtveit, Bjørn & Dysthe, Dag Kristian (2015). A model of compaction creep in carbonates.
• Keszthelyi, Dániel; Jamtveit, Bjørn & Dysthe, Dag Kristian (2015). Compaction creep by pore failure and pressure solution applied to a carbonate reservoir.
• Keszthelyi, Dániel; Jamtveit, Bjørn & Dysthe, Dag Kristian (2015). Compaction creep of carbonate rocks.
• Kohler, Felix & Dysthe, Dag Kristian (2015). Nanoconfined Crystal Growth investigated by Reflection Interference Contrast Microscopy.
• Neuville, Amélie; Vinningland, Jan Ludvig; Luu, Thi Thuy; Dysthe, Dag Kristian; Jettestuen, Espen & Hiorth, Aksel (2015). Reactive flow during water flooding – from pore to core Half-year progress report 2015.
• Neuville, Amélie; Vinningland, Jan Ludvig; Luu, Thi Thuy; Jettestuen, Espen; Dysthe, Dag Kristian & Hiorth, Aksel (2015). Chalk-calcite-microfluidic experiments: construction and flooding of microsystems with reactive fluids.
• Neuville, Amélie; Vinningland, Jan Ludvig; Luu, Thi Thuy; Jettestuen, Espen; Dysthe, Dag Kristian & Hiorth, Aksel (2015). Chalk-calcite-microfluidic experiments: construction and flooding of microsystems with reactive fluids, oral presentation.
• Skattum, Sigve Bøe; Bergsaker, Anne Schad & Dysthe, Dag Kristian (2015). CO2 Storage in North Sea Chalk Fields.
• Bergsaker, Anne Schad; Neuville, Amélie; Røyne, Anja & Dysthe, Dag Kristian (2014). MICRODEFORMATION EXPERIMENTS ON CHALK - FLUIDS, FRACTURE AND CREEP.
• Dysthe, Dag Kristian (2014). A naïve model of rough contacts.
• Dysthe, Dag Kristian (2014). Microfluidic experiments - real time reactions.
• Dysthe, Dag Kristian (2014). The different roles of experiments.
• Dysthe, Dag Kristian; Hiorth, Aksel; Neuville, Amélie; Vinningland, Jan Ludvig; Jettestuen, Espen & Skartlien, Roar (2014). Reactive flow during water flooding -from pore2core.
• Dysthe, Dag Kristian; Kobchenko, Maya; Hafver, Andreas; Panahi, Hamed; Jamtveit, Bjørn & Renard, Francois Marie Paul L (2014). Temporal and spatial characteristics of drainage fracture networks in elastic media with internal fluid generation.
• Dysthe, Dag Kristian & Read, Alexander Lincoln (2014). Beregninger i kurset FYS2150 "Eksperimentell fysikk".
• Hiorth, Aksel; Dysthe, Dag Kristian; Neuville, Amélie; Vinningland, Jan Ludvig & Jettestuen, Espen (2014). Reactive flow during water flooding – from pore to core, Quartely report 2, 2014.
• Høgberget, Jørgen; Røyne, Anja; Malthe-Sørenssen, Anders; Dysthe, Dag Kristian & Jettestuen, Espen (2014). Nanoconfined Crystal Growth and Dissolution.
• Keszthelyi, Dániel; Dysthe, Dag Kristian & Jamtveit, Bjørn (2014). Compaction of a producing reservoir.
• Keszthelyi, Dániel; Dysthe, Dag Kristian & Jamtveit, Bjørn (2014). Compaction of the Ekofisk oil reservoir - On small- and on large-scale.
• Keszthelyi, Dániel; Jamtveit, Bjørn & Dysthe, Dag Kristian (2014). Compaction of North-sea chalk.
• Neuville, Amélie; Dysthe, Dag Kristian & Hiorth, Aksel (2014). Flooding microsystems with reactive fluids Calcite-Chalk-microfluidic.
• Neuville, Amélie; Dysthe, Dag Kristian; Hiorth, Aksel & Li, Lei (2014). Flooding microsystems with reactive fluids Calcite-Chalk microfluidic.
• Neuville, Amelie; Dysthe, Dag Kristian; Li, Lei & Hiorth, Aksel (2014). Flooding microsystems with reactive fluids Calcite-Chalk-microfluidic.
• Neuville, Amélie; Vinningland, Jan Ludvig; Jettestuen, Espen; Skartlien, Roar; Dysthe, Dag Kristian & Hiorth, Aksel (2014). JCR-7 Symposium 2014 Transaction - Reactive flow during water flooding – from pore2core.
• Vinningland, Jan Ludvig; Neuville, Amelie; Pedersen, Janne; Jettestuen, Espen; Dysthe, Dag Kristian & Hiorth, Aksel (2014). Reactive flow simulations: one-to-one comparison with experiments.
• Hiorth, Aksel; Dysthe, Dag Kristian; Neuville, Amélie; Vinningland, Jan Ludvig & Li, Lei (2013). JCR-7 - Project Status Report n°1.
• Neuville, Amélie; Dysthe, Dag Kristian; Li, Lei & Hiorth, Aksel (2013). Reactive flow during flooding From pore to core.
• Nermoen, Anders; Dysthe, Dag Kristian; Raufaste, Christophe; Jettestuen, Espen; deVilliers, Simon & Podladchikov, YY (2008). The formation of high permeability chimneys: A Segregation mechanism in fluidized granular materials.
• Croizé, Delphine; Bjørlykke, Knut; Renard, Francois Marie Paul L; Dysthe, Dag Kristian & Jahren, Jens (2008). Deformation of carbonates, experimental mechanical and chemical compaction,.
• Croizé, Delphine; Bjørlykke, Knut; Renard, Francois Marie Paul L; Dysthe, Dag Kristian & Jahren, Jens (2008). Pressure-solution in carbonate - An experimental study.
• Croizé, Delphine; Bjørlykke, Knut; Renard, Francois Marie Paul L; Dysthe, Dag Kristian & Jahren, Jens (2008). Pressure-solution in carbonate - An experimental study,.
• Røyne, Anja; Bisschop, Jan & Dysthe, Dag Kristian (2008). Mechanisms of subcritical cracking in calcite.
• Røyne, Anja; Bisschop, Jan & Dysthe, Dag Kristian (2008). Subcritical cracking in calcite single crystals. Show summary

  Brittle materials are characterized by a critical stress intensity factor above which they will fail catastrophically by dynamic cracking. However, it has been observed that materials can also fail at much lower stresses, through slow crack growth, often referred to as subcritical cracking. This phenomenon can take place even in vacuum, but is greatly enhanced by water and other reactive species in the environment. For a given material and environmental condition there is a systematic relationship between the crack tip velocity and the stress intensity factor. The presence of a lower stress limit to subcritical cracking has been predicted from thermodynamics but has not been firmly demonstrated experimentally. This parameter would control the long-term strength of geological materials. Subcritical cracking must necessarily be important in controlling the rock strength in near-surface processes where water and other active species are present and the displacements and stresses are low. Weathering is one example of such a process. Modelling has shown that fracture networks generated by a high degree of subcritical cracking will percolate at much lower fracture densities than purely stochastical fracture networks. This has important implications for how water can move through the crust. Understanding the mechanisms for subcritical crack growth in geological materials is also important in assessing the stability and long term performance of sequestration reservoirs for CO2 or nuclear waste. The mechanism for stress corrosion is well known for glasses and quartz. In the reaction [Si-O-Si] + H20 → 2[SiOH], a covalent Si-O bond is replaced by a much weaker hydrogen bond and the fracture strength at the crack tip is lowered significantly. This mechanism may also work on the more complex silicate minerals. For carbonate minerals, the mechanism for subcritical crack growth has not been identified, and the only experimental studies on calcitic materials have been on polycrystalline rocks such as marble. Suggested mechanisms include stress corrosion (weakening reactions at the crack tip), preferential dissolution at the crack tip with rapid removal of dissolved species, and environmentally controlled microplasticity (pile-up of dislocations in the process zone around the crack tip). In our experiment, we study the subcritical growth of a cleavage crack through a single calcite crystal. We use the well documented Double Torsion method which allows for easy study of a tensile crack growing in the specimen. By varying fluid conditions such as pH and temperature we search for a better understanding of what mechanisms are responsible for subcritical cracking in calcite, and also hope to identify a lower limit on the stress intensity factor required to drive a subcritical crack.

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