Results 11 to 20 of about 825 (168)
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
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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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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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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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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).
Marty, S. +7 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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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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Effect of Fluid Viscosity on Earthquake Nucleation [PDF]
Geophysical Research Letters, 2020 AbstractInjection of fluids in geo‐reservoirs can reduce the effective stresses at depth, lubricating the nearby faults, promoting slip and, potentially, earthquakes. High‐viscous fluids are often used during hydraulic fracturing and production phases in geo‐reservoirs.
Cornelio, C., Violay, M.
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Earthquake nucleation on dip‐slip faults [PDF]
Journal of Geophysical Research: Solid Earth, 2004 The nucleation of unstable slip on a fault is of key importance in our understanding of the seismic cycle. We investigate how the asymmetric geometry of dip‐slip faults affects the nucleation of unstable slip on such faults. Previous researchers have devoted much effort to understanding this nucleation process on geometrically simple faults, using a ...
Chuanli Zhang +2 more
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Earth and Space Science, 2023 We simulated the rupture dynamics and ground motion of the 1850 Xichang, China, earthquake on the Zemuhe fault, which consists of the Lijinbao segment, the Dajing segment, the Chechejie segment, and the Songxin segment, with the curved grid finite ...
Houyun Yu +4 more
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