Results 11 to 20 of about 9,797 (247)
Earthquake Research AdvancesEarthquakes are caused by the rapid slip along seismogenic faults. Whether large or small, there is inevitably a certain nucleation process involved before the dynamic rupture.
Zhigang Peng, Xinglin Lei
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Shear heating-induced thermal pressurization during earthquake nucleation [PDF]
Journal of Geophysical Research, 2011 [1] We model earthquake nucleation (in 2D) on narrow faults with coupled rate-state friction and shear heating-induced thermal pressurization, including diffusive transport of heat and pore pressure. Thermal pressurization increases pore pressure p, decreasing frictional resistance.
S. V. Schmitt +2 more
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Earthquake nucleation in intact or healed rocks [PDF]
Journal of Geophysical Research: Solid Earth, 2014 AbstractEarthquakes are generated because faults lose strength with increasing slip and slip rate. Among the simplest representations of slip‐dependent strength is the linear slip‐weakening model, characterized by a linear drop to a residual friction. However, healed fault rocks often exhibit some slip strengthening before the onset of weakening.
Nicolas Brantut, Robert C. Viesca
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Earthquake nucleation on dip‐slip faults [PDF]
Journal of Geophysical Research: Solid Earth, 2004 The nucleation of unstable slip on a fault is of key importance in our understanding of the seismic cycle. We investigate how the asymmetric geometry of dip‐slip faults affects the nucleation of unstable slip on such faults. Previous researchers have devoted much effort to understanding this nucleation process on geometrically simple faults, using a ...
Chuanli Zhang +2 more
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Frictional healing and induced earthquakes on conventionally stable faults [PDF]
Nature CommunicationsConventional studies suggest that faults in the shallow subsurface resist earthquake nucleation, because their frictional strength increases as slip accelerates (i.e., velocity-strengthening friction).
Meng Li +2 more
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The Role of Fluids in Fault Mechanics: A 16‐Year Analysis of the Irpinia Seismicity (Southern Italy)
Geophysical Research LettersFluids in the crust influence earthquake nucleation by affecting fault strength and rupture dynamics, but direct observations at seismogenic depths are rare.
G. M. Adinolfi +3 more
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Earthquake ScienceMonitoring the evolution of foreshocks can be a valuable way to analyze the nucleation process. Foreshocks accompanying moderate mainshocks have been recorded in the west of Yunnan Province, China.
Gaohua Zhu +2 more
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Insights on earthquake nucleation revealed by numerical simulation and unsupervised machine learning of laboratory-scale earthquake [PDF]
Scientific ReportsUnderstanding earthquake nucleation is vital for predicting and mitigating seismic events, saving lives, and enhancing construction practices in earthquake-prone areas.
Sheng Hua Ye +2 more
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Earthquake Nucleation Size: Evidence of Loading Rate Dependence in Laboratory Faults. [PDF]
J Geophys Res Solid Earth, 2019 Guérin-Marthe S +4 more
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Earthquake nucleation on (aging) rate and state faults [PDF]
Journal of Geophysical Research: Solid Earth, 2005 We obtain quasi‐static, two‐dimensional solutions for earthquake nucleation on faults obeying Dieterich's “aging” version of the rate and state friction equations. Two distinct nucleation regimes are found, separated by roughly a/b ∼ 0.5, where a and b are the constitutive parameters relating changes in slip rate V and state θ to frictional strength ...
Rubin, A. M., Ampuero, J.-P.
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