We develop a 2D slip-weakening description of a self-healing slip pulse that propagates dynamically in a steady-state configuration. The model is used to estimate patterns of off-fault secondary failure induced by the rupture, and also to infer fracture energies G for large earthquakes. This extends an analysis for a semiinfinite rupture (Poliakov et al., 2002) to the case of a finite slipping ...

The transition from stick to slip at a dry frictional interface occurs through the breaking of microjunctions between the two contacting surfaces. Typically, interactions between junctions through the bulk lead to rupture fronts propagating from weak and/or highly stressed regions, whose junctions break first. Experiments find rupture fronts ranging from quasistatic fronts, via fronts much slow...

We perform a detailed parameter-space study on properties of yielding zones generated by 2-D in-plane dynamic ruptures on a planar fault with different friction laws and parameters, different initial stress conditions, different rock cohesion values, and different contrasts of elasticity and mass density across the fault. The focus is on cases corresponding to large strike-slip faults having hi...

OBJECTIVES This nested case-crossover study examined the association between rushing, distraction and walking on a contaminated floor and the rate of slipping, and whether the effects varied according to weekly hours worked, job tenure and use of slip-resistant shoes. METHODS At baseline, workers from 30 limited-service restaurants in the USA reported average work hours, average weekly durati...

[1] Among the most fascinating, recent discoveries in seismology are the phenomena of dynamically triggered fault slip, including earthquakes, tremor, slow and silent slip—during which little seismic energy is radiated—and low frequency earthquakes. Dynamic triggering refers to the initiation of fault slip by a transient deformation perturbation, most often in the form of passing seismic waves....

We herein report the results of some numerical simulations of complex earthquake cycles using a threedegree-of-freedom spring-block model with a rateand statedependent friction law. The model consists of three blocks on a conveyor belt that is moving at a steady rate. Observed complex slip behaviour in the simulations is classified into five slip patterns, and for each of these the parameter de...

for finding the optimal choices of applied remote loads – normal force, moment, shear force and bulk stresses needed to solve frictional contact problems in partial-slip using half-plane theory are derived by data from contacts analysed finite element method. While forces moment readily found equilibrium considerations, order determine we must exploit details traction ratio direct strain within...

for the ICRA08 Planetary Rovers Workshop Slip Estimation and Compensation Control for Lunar/Planetary Rovers on Loose Soil Kazuya Yoshida, Keiji Nagatani, Genya Ishigami Dept. of Aerospace Engineering, Tohoku University, Japan Giulio Reina Dept. of Innovation Engineering, University of Salento, Italy For a mobile robot, it is critical to detect and compensate for slippage, especially when drivi...

[1] The majority of crustal faults host earthquakes when the ratio of average background shear stress b to effective normal stress eff is b/ eff 0.6. In contrast, mature plate-boundary faults like the San Andreas Fault (SAF) operate at b/ eff 0.2. Dynamic weakening, the dramatic reduction in frictional resistance at coseismic slip velocities that is commonly observed in laboratory experiments, ...

the study area is the rahmat anticline. this is located in fars province (sw fold simple zagros belt). the aims of this study are morphotectonic studies and structural analysis in several parts of area. for this purpose: 1) morphotectonic indices, drainage basin shape index (bs), mountain front sinuosity index (smf) and valley floor width – height ratio (vf) were measured by digital elevation m...