Intermittent lab earthquakes in dynamically weakening fault gouge

V Rubino, N Lapusta, AJ Rosakis - Nature, 2022 - nature.com
Large and destructive earthquakes on mature faults in Earth's crust occur as slip in a layer of
a fine granular material—fault gouge—produced by comminution during sliding,. A range of …

Constitutive behavior of rocks during the seismic cycle

S Barbot - AGU Advances, 2023 - Wiley Online Library
Establishing a constitutive law for fault friction is a crucial objective of earthquake science.
However, the complex frictional behavior of natural and synthetic gouges in laboratory …

Dynamic rupture initiation and propagation in a fluid-injection laboratory setup with diagnostics across multiple temporal scales

M Gori, V Rubino, AJ Rosakis… - Proceedings of the …, 2021 - National Acad Sciences
Fluids are known to trigger a broad range of slip events, from slow, creeping transients to
dynamic earthquake ruptures. Yet, the detailed mechanics underlying these processes and …

Earth's gradients as the engine of plate tectonics and earthquakes

D Zaccagnino, C Doglioni - La Rivista del Nuovo Cimento, 2022 - Springer
The processes occurring on the Earth are controlled by several gradients. The surface of the
Planet is featured by complex geological patterns produced by both endogenous and …

Influences of dynamic normal disturbance and initial shear stress on fault activation characteristics

G Cui, C Zhang, J Ye, H Zhou, L Li, L Zhang - … and Geophysics for Geo …, 2022 - Springer
Dynamic disturbance resulting from blasting, excavation, and earthquakes might change the
stress state, friction characteristics, failure mechanism, and the fault's failure mode, induce …

On the interplay between distributed bulk plasticity and local fault slip in evolving fault zone complexity

M Abdelmeguid, MS Mia… - Geophysical Research …, 2024 - Wiley Online Library
We numerically investigate the role of plastic strain accumulation on the mechanical
response of a planar strike‐slip fault. Our models show that fault‐zone strength significantly …

SpatioTemporally adaptive quadtree mesh (STAQ) digital image correlation for resolving large deformations around complex geometries and discontinuities

J Yang, V Rubino, Z Ma, J Tao, Y Yin, A McGhee… - Experimental …, 2022 - Springer
Background Digital image correlation (DIC) is a powerful experimental tool for measuring full-
field material deformations. Inherent limitations of typical DIC algorithms can cause a …

Sequences of seismic and aseismic slip on bimaterial faults show dominant rupture asymmetry and potential for elevated seismic hazard

M Abdelmeguid, A Elbanna - Earth and Planetary Science Letters, 2022 - Elsevier
We perform numerical simulations of sequences of earthquake and aseismic slip on planar
rate and state faults separating dissimilar material within the 2-D plane strain approximation …

The earth's surface controls the depth‐dependent seismic radiation of megathrust earthquakes

J Yin, MA Denolle - AGU Advances, 2021 - Wiley Online Library
Megathrust earthquakes exhibit a ubiquitous seismic radiation style: low‐frequency (LF)
seismic energy is efficiently emitted from the shallowest portion of the fault, whereas high …

[HTML][HTML] A comparative study between Amontons–Coulomb and Dieterich–Ruina friction laws for the cyclic response of a single degree of freedom system

A Cabboi, L Marino, A Cicirello - European Journal of Mechanics-A/Solids, 2022 - Elsevier
This study aims at assessing the predictive performance of the Amontons–Coulomb law to
reliably predict the cyclic response, inclusive of stick–slip, of a single degree of freedom …