Foreshock properties illuminate nucleation processes of slow and fast laboratory earthquakes [PDF]
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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Mainshocks are aftershocks of conditional foreshocks: How do foreshock statistical properties emerge from aftershock laws [PDF]
Journal of Geophysical Research: Solid Earth, 2003 The inverse Omori law for foreshocks discovered in the 1970s states that the rate of earthquakes prior to a mainshock increases on average as a power law ∝ 1/(tc − t)p′ of the time to the mainshock occurring at tc. Here, we show that this law results from the direct Omori law for aftershocks describing the power law decay ∼ 1/(t − tc)p of seismicity ...
Helmstetter, Agnès +2 more
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Earthquake Research AdvancesEarthquakes are caused by the rapid slip along seismogenic faults. Whether large or small, there is inevitably a certain nucleation process involved before the dynamic rupture.
Zhigang Peng, Xinglin Lei
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Characteristics of foreshock activity inferred from the JMA earthquake catalog [PDF]
Earth, Planets and Space, 2018 We investigated the foreshock activity characteristics using the Japan Meteorological Agency Unified Earthquake Catalog for the last 20 years. Using the nearest-neighbor distance approach, we systematically and objectively classified the earthquakes into
Koji Tamaribuchi +3 more
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Near-seismic effects in ULF fields and seismo-acoustic emission: statistics and explanation [PDF]
Natural Hazards and Earth System Sciences, 2005 Preseismic intensification of fracturing has been investigated from occurrence analysis of seismo-acoustic pulses (SA foreshocks) and ULF magnetic pulses (ULF foreshocks) observed in Karimshino station in addition to seismic foreshocks.
O. Molchanov +10 more
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A laboratory perspective on accelerating preparatory processes before earthquakes and implications for foreshock detectability [PDF]
Nature CommunicationsDynamic failure in the laboratory is commonly preceded by many foreshocks which accompany premonitory aseismic slip. Aseismic slip is also thought to govern earthquake nucleation in nature, yet, foreshocks are rare. Here, we examine how heterogeneity due
Thomas H. W. Goebel +4 more
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The Pawnee earthquake as a result of the interplay among injection, faults and foreshocks
Scientific Reports, 2017 The Pawnee M5.8 earthquake is the largest event in Oklahoma instrument recorded history. It occurred near the edge of active seismic zones, similar to other M5+ earthquakes since 2011.
Xiaowei Chen +8 more
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Insights on earthquake nucleation revealed by numerical simulation and unsupervised machine learning of laboratory-scale earthquake [PDF]
Scientific ReportsUnderstanding earthquake nucleation is vital for predicting and mitigating seismic events, saving lives, and enhancing construction practices in earthquake-prone areas.
Sheng Hua Ye +2 more
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Seismic rate variations prior to the 2010 Maule, Chile MW 8.8 giant megathrust earthquake [PDF]
Scientific Reports, 2021 The MW 8.8 Maule earthquake is the largest well-recorded megathrust earthquake reported in South America. It is known to have had very few foreshocks due to its locking degree, and a strong aftershock activity.
Benoit Derode +2 more
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Cascading Foreshocks, Aftershocks, and Earthquake Swarms in a Discrete Fault Network
Geophysical Journal International, 2023 Earthquakes come in clusters formed of mostly aftershock sequences, swarms, and occasional foreshock sequences. This clustering is thought to result either from stress transfer among faults, a process referred to as cascading, or from transient loading
K. Im, J. Avouac
semanticscholar +1 more source