Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Marie Violay"'
Publikováno v:
Communications Earth & Environment, Vol 5, Iss 1, Pp 1-7 (2024)
Abstract Recent large-scale seismological observations have shown that off-fault strain localization and foreshock migration could serve as an early warning of an impending earthquake. However, this process is still largely unknown. In this study, st
Externí odkaz:
https://doaj.org/article/8e3fa936e48542d5ab26b08c4570dad1
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-9 (2024)
Abstract Geothermal projects utilizing supercritical water (≥400 °C) could boost power output tenfold compared to conventional plants. However, these reservoirs commonly occur in crustal areas where rocks are semi-ductile or ductile, impeding larg
Externí odkaz:
https://doaj.org/article/882be38d0d2841808a9c230b6ea9be1e
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-13 (2022)
Abstract Near-surface disposal of radioactive waste in shales is a promising option to safeguard the population and environment. However, natural faults intersecting these geological formations can potentially affect the long-term isolation of the re
Externí odkaz:
https://doaj.org/article/ab07bc4386b84443b7f09662318b891f
Autor:
François X. Passelègue, Michelle Almakari, Pierre Dublanchet, Fabian Barras, Jérôme Fortin, Marie Violay
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
The authors show that seismogenic faults can be activated by stress perturbations by all possible modes of slip independently of the frictional properties. They demonstrate, that the nature of seismicity is mostly governed by the initial stress level
Externí odkaz:
https://doaj.org/article/6a93033f37814aa786761973ff42895f
Publikováno v:
Crystals, Vol 6, Iss 7, p 83 (2016)
Earthquakes are the result of slip along faults and are due to the decrease of rock frictional strength (dynamic weakening) with increasing slip and slip rate. Friction experiments simulating the abrupt accelerations (>>10 m/s2), slip rates (~1 m/s),
Externí odkaz:
https://doaj.org/article/3fb8a9418f7649a2b9bd21a5f169d8df
Geothermal energy is one of the renewable energy sources that can help mitigate climate change. Rocks are elasto-plastic materials at low pressure and temperature, and the deformation is accommodated along localized shear bands (brittle behavior); at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b62231ad20bc56f60b74fb508baf65ba
https://doi.org/10.5194/egusphere-egu23-6190
https://doi.org/10.5194/egusphere-egu23-6190
The presence of water causes a dramatic reduction of the strength of most rocks. Under compressive stress conditions, fracture mechanics models show the strength of a rock sample is in particular controlled by frictional parameters and the fracture t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::797668519d40fcebad71b535576d9d98
https://doi.org/10.5194/egusphere-egu23-4578
https://doi.org/10.5194/egusphere-egu23-4578
The onset of crack propagation is often described with a unique threshold and intrinsic material property, the fracture energy. However, in geomaterials, this parameter varies with environmental and loading conditions (e.g., temperature, confining pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9225198955f049c3b9ecfda3066f08c8
https://doi.org/10.5194/egusphere-egu23-12383
https://doi.org/10.5194/egusphere-egu23-12383
Autor:
Michael Heap, Claire Harnett, Jamie Farquharson, Patrick Baud, Marina Rosas-Carbajal, Jean-Christophe Komorowski, Marie Violay, Albert Gilg, Thierry Reuschlé
The rocks forming a volcano are typically saturated or partially-saturated with liquid. However, most experiments aimed at better understanding the mechanical behaviour of volcanic rocks have been performed on dry samples, and therefore most large-sc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd95e65f93d50449321f5b992bcb8b40
https://doi.org/10.5194/egusphere-egu23-1248
https://doi.org/10.5194/egusphere-egu23-1248
Autor:
Gabriel Meyer, Marie Violay
With increasing depth, crustal rocks gradually transition in deformation type, from being brittle/cataclastic to being crystal plastic, as well as in deformation mode, from being localized (faults, shear zones) to being ductile (homogeneous flow). Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::447b9e3d7451fbdac6432c628c74af14
https://doi.org/10.5194/egusphere-egu23-4576
https://doi.org/10.5194/egusphere-egu23-4576