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Earthquake Nucleation Along Faults With Heterogeneous Weakening Rate. [PDF]
Geophys Res Lett, 2021 AbstractThe transition from quasistatic slip growth to dynamic rupture propagation constitutes one possible scenario to describe earthquake nucleation. If this transition is rather well understood for homogeneous faults, how the friction properties of multiscale asperities may influence the overall stability of seismogenic faults remains largely ...
Lebihain M +3 more
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Geophysical Research LettersLaboratory experiments and theoretical models suggest that earthquakes are preceded by extended nucleation phases, perhaps by slow but accelerating slip. However, such nucleation phases are hard to observe before natural earthquakes.
Hui Huang, Jessica C. Hawthorne
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Earthquake nucleation on rough faults [PDF]
Geology, 2017 Earthquake nucleation is currently explained using rate and state stability analysis, which successfully models the behavior of laboratory simulated faults with constant thickness gouge layers. However, roughness is widely observed on natural faults and its influence on earthquake nucleation is little explored.
Christopher Harbord +3 more
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Earthquake Nucleation Characteristics Revealed by Seismicity Response to Seasonal Stress Variations Induced by Gas Production at Groningen [PDF]
Geophysical Research Letters, 2023 Deterministic earthquake prediction remains elusive, but time‐dependent probabilistic seismicity forecasting seems within reach thanks to the development of physics‐based models relating seismicity to stress changes. Difficulties include constraining the
Mateo Acosta +5 more
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Earth and Space Science, 2023 We simulated the rupture dynamics and ground motion of the 1850 Xichang, China, earthquake on the Zemuhe fault, which consists of the Lijinbao segment, the Dajing segment, the Chechejie segment, and the Songxin segment, with the curved grid finite ...
Houyun Yu +4 more
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Earthquake nucleation in the lower crust by local stress amplification [PDF]
Nature Communications, 2020 This study investigates deep intracontinental earthquakes. Based on field data from exhumed lower crustal pseudotachylytes and mylonites from Lofoten, northern Norway, the authors describe a novel model of earthquake nucleation in the lower crust as a ...
L. R. Campbell +3 more
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Nucleation of laboratory earthquakes: quantitative analysis and scalings [PDF]
Journal of Geophysical Research: Solid Earth, 2023 Decades of seismological observations have highlighted the variability of foreshock occurrence prior to natural earthquakes, making thus difficult to track how earthquakes start. Here, we report on three stick-slip experiments performed on cylindrical samples of Indian metagabbro under upper crustal stress conditions (30-60 MPa).
Samson Marty +7 more
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Nucleation speed limit on remote fluid-induced earthquakes [PDF]
Science Advances, 2017 Larger earthquakes unlocked by fluids are seen globally to take a predictably longer time to begin.
Tom Parsons +2 more
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Stick-slip nucleation triggering of Wenchuan earthquake
Geodesy and Geodynamics, 2021 The MS8.0 Wenchuan earthquake occurred on May 12th, 2008 on the steeply reverse fault of the Longmen Shan fault zone, Western China. Catastrophic failure and rupture occurred along the listric sliding surface.
Shuangxi Zhang +5 more
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Effect of Fluid Viscosity on Earthquake Nucleation [PDF]
Geophysical Research Letters, 2020 AbstractInjection of fluids in geo‐reservoirs can reduce the effective stresses at depth, lubricating the nearby faults, promoting slip and, potentially, earthquakes. High‐viscous fluids are often used during hydraulic fracturing and production phases in geo‐reservoirs.
Chiara Cornelio, Marie Violay
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