...Hanaya Okuda; Kenji Kawai; Hiroshi Sakuma Abstract To investigate the role of atomic-scale structure on the frictional properties of gibbsite, a dioctahedral-type aluminum hydroxide, we calculated the atomic-scale interlayer shear properties using the first-principles method based on density...

... conducted using a rate‐ and state‐dependent friction law to investigate the occurrence conditions of episodic aseismic slip events within a fault having uniform velocity‐weakening friction. When the velocity‐weakening zone is much wider than the critical nucleation zone size, a rupture that seismically...

...Jagdish Chandra Vyas; Alice‐Agnes Gabriel; Thomas Ulrich; Paul Martin Mai; Jean‐Paul Ampuero ABSTRACT Frictional heating during earthquake rupture raises the fault‐zone fluid pressure, which affects dynamic rupture and seismic radiation. Here, we investigate two key parameters governing thermal...

... energy, but the addition of inelasticity can make it difficult to select parameters and establish suitable initial conditions, and increases the model’s complexity and computational cost. We propose a new method that works by adding a nonlinear radiation damping term to the friction law...

... at palaeodepths of 10–15 km, where frictional–viscous deformation synchronous with co-seismic frictional melting led to cycles of millimetre- to decimetre-scale cavity dilation and collapse. Although individual melt-generating slip surfaces may have become rapidly welded, faulting was able to repeatedly localize...

...‐and‐state dependent friction with additional aftershocks fits the available data well. Despite the overall decreasing earthquake rate resulting from decreasing production volumes, scenario calculations based on simulated pressure and compaction data indicate a considerable probability that the maximum...

... in the field is lacking, especially for the phyllosilicate-rich gouges that are widely observed in natural faults. We integrated laboratory friction experiments with surface topography microscopy and demonstrated a quantitative correlation between frictional slip behavior and fault surface morphology...

..., precursory events, tremor and low‐frequency earthquakes. * Corresponding author: bolee@mit.edu 5 April 2022 © Seismological Society of America KEY POINTS Contact slip with poly‐linear friction has three stability regimes, depending on friction slope versus elastic loading slope...

... mechanisms. (4) The presence of water accelerates the nucleation of microcracks at the tips of the prefabricated fissures, enlarges the range of microcrack coalescence, and facilitates the emergence of unstable cracks owing to an increase in pore water pressure and a decrease in the friction resistance...

...Jackie E. Kendrick; Yan Lavallée Copyright © 2022 by the Mineralogical Society of America 2022 Mineralogical Society of America The product of frictional melting of geomaterials is termed “pseudotachylyte”. The name, first coined by Shand (1916) , represents the visual similarity...

... temperatures, mineral protoliths, and local environmental conditions, resulting in equally variable disequilibrium melting, volatilization, mixing, and crystallization ( Sokol et al. 1998 ; Canil et al. 2018 ; Peretyazhko et al. 2018 ). Pseudotachylite is a generic name for friction melts, and usually...

...‐and‐state friction ( Dieterich, 1994 ). One might worry that this observed signal is due to a lower magnitude of completeness in the areas of past seismicity due to a higher density of template events (e.g., Herrmann and Marzocchi, 2020 ). For this reason, we also test for the signal using a conventional...

.... Such solutions cannot be considered a satisfactory alternative either. Dynamic simulations have to specify numerous laws and physical parameters that are largely unconstrained by observations and have to be virtually guessed. Examples include the details of dynamic and static fault friction, fracture energies...

... the influence of frictional, geometrical, stress, and material parameters. These simulations can model single earthquakes or multiple earthquake cycles. The objective of this article is to provide a self‐contained and practical guide for students starting in the field of earthquake dynamics. Senior researchers...

... on the mechanical properties of mudrocks aids safe well design. Small changes in the mudrock clay content are shown to have significant effects on two important engineering parameters: the lateral stress ratio at rest, K 0 , and the critical state effective friction angle, ϕ ′ cs . A laboratory-testing programme...

... of the three systems (plastic–viscous and frictional–viscous) are wrong, and the remaining one (brittle–plastic) is an oversimplification. Unfortunately, despite a correct emphasis on the importance of viscoelasticity, the comment contains many conceptual errors, rendering its contents more misleading than...

... in the rock record. Due to the frictional resistance of faults, heat is rapidly generated during coseismic slip, leading to temperature spikes ( Rowe and Griffith, 2015 ). Utilizing this relationship, we identified evidence of frictional heating during earthquakes through the creeping section of the SAF...

... disaster prevention. In this study, a series of base friction tests were performed to determine the failure process and displacement field evolution of rock slopes with intermittent joints using the speckle technique of a noncontact measurement system. Next, stability calculation models of the slopes were...

... Institute Energy-dissipating hysteretic infill low-cost passive energy dissipator infilled RC frame inelastic behavior friction energy-dissipating links The concept of EDH infill wall system consists of slotted concrete blocks (may be other industrial waste such as fly ash, silica flume, etc...