Results 261 to 270 of about 102,298 (302)

The roller coaster of fault friction

Nature Geoscience, 2009
During an earthquake, friction is a key control on the initiation, propagation and termination of fault motion. Laboratory experiments that use variable slip rates suggest that friction evolves in a more complex fashion than generally assumed.
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Virtual California: Fault Model, Frictional Parameters, Applications

Pure and Applied Geophysics, 2006
Virtual California is a topologically realistic simulation of the interacting earthquake faults in California. Inputs to the model arise from field data, and typically include realistic fault system topologies, realistic long-term slip rates, and realistic frictional parameters.
P.B. Rundle, J.B. Rundle, K.F. Tiampo, A. Donnellan, D.L. Turcotte   +4 more
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Friction Fault Detection of an Electrohydrostatic Actuator

ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control, Volume 2, 2011
This article discusses the application of a novel model-based fault detection method. The method is based on the interacting multiple model (IMM) strategy, which makes use of a finite number of known operating modes. A filter is used in conjunction with the IMM in order to estimate the states and parameters of the system.
Gadsden SA, Song Y, McCullough KR, Habibi SR   +3 more
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Ultralow Friction of Carbonate Faults Caused by Thermal Decomposition

Science, 2007
High-velocity weakening of faults may drive fault motion during large earthquakes. Experiments on simulated faults in Carrara marble at slip rates up to 1.3 meters per second demonstrate that thermal decomposition of calcite due to frictional heating induces pronounced fault weakening with steady-state friction coefficients as low as 0.06 ...
Raehee, Han, Toshihiko, Shimamoto, Takehiro, Hirose, Jin-Han, Ree, Jun-Ichi, Ando   +4 more
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Effects of physical fault properties on frictional instabilities produced on simulated faults

Journal of Geophysical Research: Solid Earth, 1984
Laboratory studies of large‐scale simulated faults show that physical properties of the fault, specifically normal stress and fault roughness, significantly influence the unstable shear failure behavior of the fault. In addition, the experiments provide insights into important length‐scaling effects that are useful for assessing concepts such as ...
Paul G. Okubo, James H. Dieterich
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Stiffness in faulting and in friction experiments

Journal of Geophysical Research, 1971
Analysis shows that the ‘stiffness’ characteristic of large earthquakes is 4 or 5 orders of magnitude less than the ‘stiffness’ characteristic of typical laboratory experiments on rock. Direct application of laboratory experiments to sliding on faults is therefore uncertain.
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Frictional melting in fluid-rich faults (Bolfin Fault Zone, Chile) [PDF]

, 2019
Pseudotachylytes (solidified friction melts produced during seismic slip) are currently considered one of the veryfew geological markers of seismic faulting in exhumed faults. Pseudotachylytes are thought to be rare in thegeological record because they are typical of particular seismogenic environments characterized by water-deficientcohesive rocks and
Giulio Di Toro, Michele Fondriest, Thomas Mitchell, Rodrigo Gomila, Erik Jensen, CarloSommacampagna, Simone Masoch, Andrea Bistacchi, Giulia Magnarini, Dan Faulkner, JoséCembrano, Silvia Mittempergher   +11 more
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Mechanics of strike-slip faulting with friction

Journal of Geophysical Research, 1968
Strike-slip is analyzed for long, shallow surface faults of arbitrary dip on which motion is opposed by a frictional shear stress, which is assumed to increase linearly with depth. Static elastic analysis is used to find surface displacements and strains and to estimate the change in elastic potential energy, the frictional dissipation, and the ...
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Application of Friction to Seismic Faults

2015
Here our aim is not to give a broad overview of the physics of earthquakes, which has to do with many branches of the natural sciences, from chemistry to planetary science. Instead, we try to give a few clues about the most commonly accepted results of geophysics and seismology, keeping in mind that one is interested in the statistical physics point of
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Mechanism of frictional fusion in fault zones

Journal of Structural Geology, 1979
Abstract Spherulitic pseudotachylytes from the Arunta Block formed by frictional fusion of mylonitic parent rocks during high-level reactivation of a previously ductile fault zone. Fusion occurred preferentially in mica-rich domains due to release of water through disruption of the mica lattice by frictional sliding.
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