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friction

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Journal Article
Journal: Geophysics
Published: 16 December 2020
Geophysics (2020) 85 (6): X1–X2.
... was not considered in the model of Zeng et al. (2020) , is the contact line friction. The authors considered only the viscous dissipation as the damping mechanism in their model, whereas another damping mechanism is the contact line friction, when a static contact angle hysteresis is taken into account ( Rozhko...
FIGURES
Journal Article
Published: 07 December 2020
Environmental and Engineering Geoscience (2020) 26 (4): 427–447.
... toppling failure. Other input parameters for kinematic analysis included the average slope orientation and the basic friction angle. For the rock types exposed at the study sites and considering that most joints are smooth or slickensided, a basic friction angle of 27° was assumed for simple kinematic...
Journal Article
Journal: Interpretation
Published: 26 October 2020
Interpretation (2020) 8 (4): SR37–SR44.
...Shuvajit Bhattacharya; Sumit Verma; Jonathan R. Rotzien Abstract Submarine landslides are mass movements that transport sediment across the continental shelf to the deep ocean. This phenomenon happens when the shear stress exceeds the frictional resistance of the slope. We analyze a variety...
Journal Article
Journal: Elements
Published: 01 October 2020
Elements (2020) 16 (5): 319–324.
...Emily H. G. Cooperdock; Alexis K. Ault Fault zones record the dynamic motion of Earth’s crust and are sites of heat exchange, fluid–rock interaction, and mineralization. Episodic or long-lived fluid flow, frictional heating, and/or deformation can induce open-system chemical behavior and make...
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Journal Article
Journal: GSA Bulletin
Published: 31 August 2020
GSA Bulletin (2021) 133 (3-4): 885–896.
...Amerigo Corradetti; Miller Zambrano; Stefano Tavani; Emanuele Tondi; Thomas Daniel Seers Abstract Fault roughness constitutes a key element in the understanding of earthquake nucleation, and surficial asperities on the fault plane play a critical role in slip dynamics and frictional behavior during...
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Journal Article
Published: 01 August 2020
American Mineralogist (2020) 105 (8): 1204–1211.
... the crystal structures is poorly understood. In this study, the deformation mechanism of pyrophyllite along basal planes was revealed through density functional theory calculations and atomic-scale theory of friction. The stable and metastable interlayer structures formed by interlayer slide were consistent...
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Journal Article
Journal: Geosphere
Published: 05 June 2020
Geosphere (2020) 16 (4): 936–952.
... include a range of new approaches to incorporating shear (frictional, viscous) heating along the subduction interface and to simulating induced flow in the mantle wedge. Forearc heat-flux measurements constrain the apparent coefficient of friction (μ′) along the plate interface to <∼0.1, but the extent...
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Journal Article
Journal: Interpretation
Published: 11 May 2020
Interpretation (2020) 8 (3): SM39–SM52.
... of the Gangjiang Delta to reveal the deposition along the shoreline of the lacustrine shallow-water delta. The numerical simulation shows that the shallow-water delta is dominated by bed friction with an extensive hydrodynamical boundary layer. The bed shear stress, which varies with the changes in river flux...
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Journal Article
Published: 01 May 2020
Earthquake Spectra (2020) 36 (2): 767–787.
...Tianye Yang, M.EERI; Paolo M Calvi, M.EERI; Richard Wiebe The development of variable friction base isolation systems (VFSs) is the object of an ongoing international research project that involves extensive numerical and experimental activities. This article presents some of the recent numerical...
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Series: Geological Society, London, Special Publications
Published: 14 April 2020
DOI: 10.1144/SP490-2019-114
EISBN: 9781786205155
... parallel folding and smaller, discrete, second-order structures. Additionally, it can be determined that while the coefficient of internal friction of the deforming rocks exerts an important control on the overall taper of a deforming contractional fold-and-thrust belt, the degree to which the rocks...
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Journal Article
Journal: Geology
Published: 18 March 2020
Geology (2020) 48 (5): 514–518.
... cycles at the maximum slip velocity (∼320 mm/s), with no interruptions between cycles, to produce the maximum frictional heat over 1500 mm total displacement. “Interrupted slip” experiments were conducted to the same total displacement, but comprised 40 cycles of: 2-mm-displacement at 0.01 mm/s, velocity...
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Journal Article
Journal: Geology
Published: 09 January 2020
Geology (2020) 48 (3): 283–287.
... embeds a large number of isolated pulverized quartz clasts (PQCs). Structural analysis indicates that the gouge fabric was mainly developed by slow frictional sliding along phyllosilicate-lined Riedel shear bands during continued shearing. In contrast, the PQCs show tensile fracture network features...
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Journal Article
Journal: GSA Bulletin
Published: 31 December 2019
GSA Bulletin (2020) 132 (9-10): 1817–1828.
... normal faults are poorly oriented in the stress field (≥60° from σ 1 ) and weak (low friction). In contrast, models for low-angle normal fault formation in isotropic rocks typically assume Coulomb failure and require inclined σ 1 (no misorientation). Here, a data-based, mechanical-tectonic model...
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Journal Article
Journal: Geology
Published: 15 October 2019
Geology (2019) 47 (12): 1203–1207.
...A.K. Ault; J.L. Jensen; R.G. McDermott; F.-A. Shen; B.R. Van Devener Abstract Friction-generated heat and the subsequent thermal evolution control fault material properties and thus strength during the earthquake cycle. We document evidence for transient, nanoscale fault rheology on a high-gloss...
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Series: Geological Society, London, Special Publications
Published: 30 September 2019
DOI: 10.1144/SP477.3
EISBN: 9781786203861
... formation of a slide plane is caused by differing frictional resistances in the layered sediments. Submarine landslides have received a great deal of attention because of their links to geohazards, such as tsunamis, and their potential to destroy near-shore infrastructure and impact aspects of human...
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Series: Geological Society, London, Special Publications
Published: 30 September 2019
DOI: 10.1144/SP477.32
EISBN: 9781786203861
..., and taking into consideration deposition, entrainment and friction. The numerical model was developed based on the open-source code, Basilisk, ensuring well-balanced and positivity-preserving properties. An adaptive spatial discretization was used, which allows multi-level refinement. The adaptive criterion...
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Journal Article
Journal: Geosphere
Published: 10 September 2019
Geosphere (2019) 15 (5): 1665–1676.
...Rob M. Skarbek; Heather M. Savage Abstract We present a MATLAB graphical user interface (GUI) software package for analyzing rate and state friction experiments. Called RSFit3000, the software allows users to easily determine frictional parameters by fitting velocity-step and slide-hold-slide...
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Journal Article
Journal: AAPG Bulletin
Published: 15 June 2019
AAPG Bulletin (2019) 103 (6): 1383–1400.
.... Rock Mechanic Parameters of Different Directions of Chang 4 and 5 Member in the Jiyuan Oil Field, Ordos Basin Orientation Density Tensile Strength Compressive Strength Young’s Modulus Poisson’s Ratio Cohesion Internal Friction Angle N0°E 2.504 g/cm 3 16.64 MPa (2413 psi) 97.35 MPa...
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Journal Article
Journal: Geology
Published: 31 May 2019
Geology (2019) 47 (8): 744–748.
...) during failure of carbonates at shallow depth conditions ( Schubnel et al., 2006 ; Nicolas et al., 2017 ). To investigate the frictional stability of carbonates, recent experimental studies focused on the frictional behavior of calcite- and dolomite-rich fault rocks sheared at subseismic to seismic slip...
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Journal Article
Journal: AAPG Bulletin
Published: 15 May 2019
AAPG Bulletin (2019) 103 (5): 1153–1177.
... of approximately Φ /2 and 90- Φ /2 to the general shear-zone direction, respectively, where Φ is the angle of internal friction ( Riedel, 1929 ). The R’ set is bedding parallel, whereas R-fractures terminate on bedding interfaces, especially in thin-layered limestone and the fault core. Most of the fractures...
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