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Journal Article
Journal: Geology
Published: 28 February 2025
Geology (2025) 53 (5): 420–424.
...Monica Barbery; Greg Hirth; Terry Tullis Abstract Abundant heterogeneity has been documented on faults in nature across a wide range of length scales, including structural, mineralogical, and roughness variations. The role of complex heterogeneity on fault mechanics and frictional stability...
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Journal Article
Journal: Geology
Published: 25 February 2025
Geology (2025) 53 (5): 415–419.
...Michael Braunagel; David Malone; David Hacker; Robert Biek; Tiffany Rivera; Zachary Loffer; McKenna Holliday; W. Ashley Griffith Abstract The exceptional transport distance of long-runout landslides requires a mechanism for reduced frictional resistance to sliding. Here, we use zircons...
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Journal Article
Published: 21 February 2025
Bulletin of the Seismological Society of America (2025) 115 (3): 1105–1131.
...Brian Kilgore; N. M. Beeler ABSTRACT During frictional failure experiments, high sample rate slip, stress, and slip velocity measurements were used to determine seismic source properties. The experiments were conducted over a range of coseismic total energy release. Near‐field measurements were...
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Journal Article
Published: 18 December 2024
Seismological Research Letters (2025) 96 (3): 1654–1664.
...Kyungjae Im; Jean‐Philippe Avouac Abstract We analyze the evolution of the rupture radius and maximum magnitude ( M max ) of injection‐induced earthquakes on faults obeying rates and state friction. We define the radii of two different slip modes, aseismic ( R a ) and seismic slip ( R s...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 12 December 2024
Lithosphere (2024) 2024 (4): lithosphere_2024_144.
... loads. The application of normal disturbance loads led to the generation of consistent oscillations in shear stress, apparent friction coefficient, normal displacement, and shear displacement for both inactive and active faults. The experimental results suggest that the activation of faults can indeed...
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Journal Article
Journal: Geophysics
Published: 12 December 2024
Geophysics (2025) 90 (1): L1–L19.
.... The nucleation location of the fault is influenced by the normal boundary conditions, with a larger nucleation zone observed in the CNS condition than in the CNL condition. In the early stage of friction, the local stress and stress drop of the fault exhibit a positive correlation with the displacement loading...
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Journal Article
Published: 16 October 2024
Bulletin of the Seismological Society of America (2025) 115 (1): 54–68.
... the ratio of fault strength to stress drop, a low S value promotes higher rupture speeds, and a high S value yields slower rupture speeds ( Andrews, 1976 ; Das and Aki, 1977 ). In addition, the higher the S value, the farther away the fault is from failure and vice versa. The frictional behavior...
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Journal Article
Published: 21 August 2024
Seismological Research Letters (2024) 95 (6): 3306–3315.
... static friction stresses, which then transitioned to low dynamic‐weakening stresses, local stress drop would be near total and on the order of 80 MPa, which is 4×–40× greater than observed. But the 5 M w ≥ 7.8 transform earthquakes since 2000 initially ruptured on the branch faults of small net slip...
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Journal Article
Journal: Geophysics
Published: 19 August 2024
Geophysics (2024) 89 (5): MR281–MR295.
...-dependent properties of ice, such as changes in volumetric fraction, morphology, and viscoelasticity, by integrating the relevant thermodynamic laws. Model parameters related to ice properties and interactions, such as rigidity, shear moduli, density, and friction, are redefined. Then, using a numerical...
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Journal Article
Published: 14 August 2024
Seismological Research Letters (2025) 96 (1): 231–243.
... the physical input parameters that will yield the better similarity to earthquake relationships observed in nature, for instance, the frictional parameters of the rate‐and‐state law— a and b —or the initial normal and shear stresses. Because of the scarcity of empirical data, such input parameters are often...
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Journal Article
Published: 04 July 2024
Quarterly Journal of Engineering Geology and Hydrogeology (2024) 57 (3): qjegh2023-095.
... and then there was a reduction in the UCS after day 56. The internal friction angle value increased by 26% and the cohesion intercept value increased by 86% for the OS stabilized with PC. With the increase in the cement content in the OS stabilized with PC, the UCS, internal friction angle and cohesion intercept values...
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Journal Article
Published: 10 June 2024
Seismological Research Letters (2024) 95 (5): 2806–2819.
... controversial. Here, we utilize the integration of Interferometric Synthetic Aperture Radar observations and 2D finite element models incorporating various fault geometries such as planar faults, ramp‐flat faults, and the combined models of ramp‐flat and splay faults to explore frictional afterslip process due...
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Journal Article
Published: 01 June 2024
Jour. Geol. Soc. India (2024) 100 (6): 841–851.
.... In the current study, regression models have been developed based on correlation studies for lightly overconsolidated cohesive-frictional soil obtained from a site in the Southwest Delhi district, India. Statistical analyses have been performed on 80 observations from consolidation tests conducted on the samples...
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Journal Article
Journal: Geosphere
Published: 26 April 2024
Geosphere (2024) 20 (3): 965–980.
...P. Giacomel; D.R. Faulkner; V. Lambert; M.J. Allen Abstract Reliable determination of rate- and-state friction (RSF) parameters depends on achieving steady-state (SS) friction conditions before and after experimental velocity-stepping friction tests. This operation, through nonlinear least squares...
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Journal Article
Published: 15 April 2024
Scottish Journal of Geology (2024) 60 (1): sjg2023-016.
... some distance from the point of frictional heating, as previously proposed, as semipelitic rocks are not present at the surface at Stob Mhic Mhartuin but are likely to be present at depth. This transport, and mixing with rhyolite magma, would have provided the time and thermal energy for clast...
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Journal Article
Journal: Geology
Published: 28 February 2024
Geology (2024) 52 (6): 405–410.
... behavior are scarce. We describe frictional-viscous shear zones in the Red River fault, China, which consists of two segments with distinct seismic behaviors and fluid availabilities. The northern segment hosts moderate to large earthquakes, and midcrustal fault slip is localized into mylonitized...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 23 February 2024
Lithosphere (2024) 2024 (1): lithosphere_2023_216.
..., angle, buried depth, and pipe diameter were investigated, respectively. The results show that in the actual project, the advance jacked pipes have amplification and superposition effects on friction resistance of the subsequent pipe, and the maximum growth rate is 37.2%. The friction resistance...
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Journal Article
Published: 21 February 2024
Bulletin of the Seismological Society of America (2024) 114 (3): 1466–1480.
... of sequences of earthquakes and aseismic slip for both compressive and tensile stepovers with off‐fault plasticity. We consider a rate‐and‐state friction law for the fault friction and pressure‐sensitive Drucker–Prager plasticity for the off‐fault bulk response. We observe that the accumulation of plastic...
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Journal Article
Published: 16 February 2024
Bulletin of the Seismological Society of America (2024) 114 (3): 1444–1465.
... that the conditions for self‐arrested ruptures are connected to the decrease of residual energy at rupture boundaries. The simulations utilize the linear slip‐weakening friction law depicted by the blue curve in Figure  2a . This law is characterized by a linear decrease in shear stress ( τ ) as a function...
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Journal Article
Published: 01 December 2023
The Seismic Record (2023) 3 (4): 342–356.
... to critical prestress levels: Nucleation patch sizes are 2 km and 3 km for the M w  7.8 and 7.7 earthquakes, respectively. We demonstrate that simple friction parameters can give rise to the distinct slip characteristics of both the earthquakes, and promote dynamic and static multifault earthquake...
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