Results 11 to 20 of about 910 (180)
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.
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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
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Traces Of Laboratory Earthquake Nucleation In The Spectrum Of Ambient Noise. [PDF]
Sci Rep, 2018 AbstractThe short-term forecast of earthquakes associated with fault rupture is a challenge in seismology and rock mechanics. The evolution of mechanical characteristics of a local fault segment may be encoded in the ambient noise, thus, converting the ambient noise to an efficient source of information about the fault stress-strain conditions.
Kocharyan GG, Ostapchuk AA, Pavlov DV.
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Nucleation of laboratory earthquakes: quantitative analysis and scalings
Journal of Geophysical Research: Solid Earth, 2023 Decades of seismological observations have highlighted the variability of foreshock occurrence prior to natural earthquakes, making thus difficult to track how earthquakes start. Here, we report on three stick-slip experiments performed on cylindrical samples of Indian metagabbro under upper crustal stress conditions (30-60 MPa).
samson marty +7 more
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Geophysical Research Letters, 2022 We conducted fluid injection experiments on cylindrical low‐permeability granite samples with a critically stressed sawcut fault at local injection rates of 0.2 and 0.8 mL/min and confining pressures of 31 and 61 MPa.
Yinlin Ji +4 more
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Earthquake Science, 2022 The July 2019 MW6.4 Ridgecrest, California earthquake and its distinct foreshocks were well recorded by local and regional stations, providing a great opportunity to characterize its foreshocks and investigate the nucleation mechanisms of the mainshock ...
Min Liu, Miao Zhang, Hongyi Li
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Earthquake nucleation in weak subducted carbonates
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
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Useful predictions ahead of large earthquakes and lessons learned for future progress
Geodesy and Geodynamics, 2020 A significant basis for this article is the outcome of 4 multinational research projects which were carried out in South-West Iceland from 1988–2006, focusing on crustal processes that preceded two magnitude-6.6 earthquakes in June 2000.
Ragnar Stefánsson
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Stick-slip nucleation triggering of Wenchuan earthquake
Geodesy and Geodynamics, 2021 The MS8.0 Wenchuan earthquake occurred on May 12th, 2008 on the steeply reverse fault of the Longmen Shan fault zone, Western China. Catastrophic failure and rupture occurred along the listric sliding surface.
Shuangxi Zhang +5 more
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Foreshock properties illuminate nucleation processes of slow and fast laboratory earthquakes
Nature Communications, 2023 Understanding the connection between seismic activity and the earthquake nucleation process is a fundamental goal in earthquake seismology with important implications for earthquake early warning systems and forecasting.
David C. Bolton +3 more
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