Results 11 to 20 of about 2,047 (206)
Earthquake Nucleation Along Faults With Heterogeneous Weakening Rate [PDF]
Geophysical Research Letters, 2021 AbstractThe transition from quasistatic slip growth to dynamic rupture propagation constitutes one possible scenario to describe earthquake nucleation. If this transition is rather well understood for homogeneous faults, how the friction properties of multiscale asperities may influence the overall stability of seismogenic faults remains largely ...
Mathias Lebihain +2 more
exaly +10 more sources
Earthquake nucleation in the lower crust by local stress amplification [PDF]
Nature Communications, 2020 This study investigates deep intracontinental earthquakes. Based on field data from exhumed lower crustal pseudotachylytes and mylonites from Lofoten, northern Norway, the authors describe a novel model of earthquake nucleation in the lower crust as a ...
L. R. Campbell +3 more
doaj +8 more sources
Earthquake nucleation and triggering on an optimally oriented fault
Earth and Planetary Science Letters, 2013 AbstractSeismic surface waves from large, distant earthquakes commonly trigger smaller earthquakes. However, delay times of hours to days between the surface waves and the triggered earthquakes weaken the causal connection. Furthermore, when there is no delay, the triggered earthquakes are typically too small or too obscured to obtain reliable source ...
Carl Tape +2 more
exaly +3 more sources
Earthquake nucleation in intact or healed rocks [PDF]
Journal of Geophysical Research: Solid Earth, 2015 Abstract Earthquakes are generated because faults lose strength with increasing slip and slip rate. Among the simplest representations of slip‐dependent strength is the linear slip‐weakening model, characterized by a linear drop to a residual friction.
Nicolas Brantut, Robert C Viesca
exaly +6 more sources
The Effects of Fault Roughness on the Earthquake Nucleation Process [PDF]
Journal of Geophysical Research: Solid Earth, 2018 AbstractWe study numerically the effects of fault roughness on the nucleation process during earthquake sequences. The faults are governed by a rate and state friction law. The roughness introduces local barriers that complicate the nucleation process and result in asymmetric expansion of the rupture, nonmonotonic increase in the slip rates on the ...
Yuval Tal +2 more
exaly +5 more sources
Earthquake nucleation on rough faults [PDF]
Geology, 2017 Earthquake nucleation is currently explained using rate and state stability analysis, which successfully models the behavior of laboratory simulated faults with constant thickness gouge layers. However, roughness is widely observed on natural faults and its influence on earthquake nucleation is little explored.
Harbord, Christopher W. A. +3 more
openaire +5 more sources
Earthquake nucleation in weak subducted carbonates [PDF]
Nature Geoscience, 2016 Ocean-floor carbonate- and clay-rich sediments form major inputs to subduction zones, especially at low-latitude convergent plate margins. Therefore, knowledge of their frictional behaviour is fundamental for understanding plate-boundary earthquakes.
Robert M. Kurzawski +4 more
core +6 more sources
Geophysical Research Letters, 2023 Deterministic earthquake prediction remains elusive, but time‐dependent probabilistic seismicity forecasting seems within reach thanks to the development of physics‐based models relating seismicity to stress changes. Difficulties include constraining the
Mateo Acosta +5 more
doaj +2 more sources
On the Mechanism of Laboratory Earthquake Nucleation Highlighted by Acoustic Emission. [PDF]
Sci Rep, 2020 AbstractDynamics of granular media is the key to understanding behavior of many natural systems. In this work we concentrate on studying regularities of deformation of a gouge-filled fault. Confined granular layer – model fault – subjected to an external stress may display sudden slip owing to rearrangement of the granular layer.
Ostapchuk AA, Morozova KG.
europepmc +4 more sources
Dynamic nucleation as a cascade-up of earthquakes depending on rupture propagation velocity
Earth, Planets and Space, 2023 Earthquake dynamic rupture requires a nucleation process to provide sufficient energy to overcome the fracture energy. Large earthquakes may occur via a cascading rupture process, which includes many triggering processes that cascade from small to large ...
Kansuke Uemura, Satoshi Ide, Hideo Aochi
doaj +2 more sources