Are Foreshocks Fore‐Shocks? [PDF]
Journal of Geophysical Research: Solid EarthAbstractForeshocks are spatially clustered seismic events preceding large earthquakes. Since the dawn of seismology, their occurrence has been identified as a possible mechanism leading to further crustal destabilization, hence, to major failures. However, several cases occurred without any previous anomalous seismic activity, so that the hypothesis of
Davide Zaccagnino +2 more
exaly +9 more sources
The Relevance of Foreshocks in Earthquake Triggering: A Statistical Study
Entropy, 2019 An increase of seismic activity is often observed before large earthquakes. Events responsible for this increase are usually named foreshock and their occurrence probably represents the most reliable precursory pattern.
Eugenio Lippiello +2 more
exaly +4 more sources
Short-Term Foreshocks as Key Information for Mainshock Timing and Rupture: The Mw6.8 25 October 2018 Zakynthos Earthquake, Hellenic Subduction Zone [PDF]
Sensors, 2020 Significant seismicity anomalies preceded the 25 October 2018 mainshock (Mw = 6.8), NW Hellenic Arc: a transient intermediate-term (~2 yrs) swarm and a short-term (last 6 months) cluster with typical time-size-space foreshock patterns: activity increase,
Gerassimos A. Papadopoulos +4 more
doaj +3 more sources
Research on Characteristics of Foreshocks of the Dengta M5.1 Earthquake Sequence in Liaoning [PDF]
E3S Web of Conferences, 2021 With the observed earthquake sequence data and the waveform data in the hypocenter region of the M5.1 earthquake that hit Dengta County in Liaoning on 23rd January, 2013, this study calculated the amplitude spectrum correlation coefficient before and ...
Wang Xiaoshan +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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Seismic and Aseismic Fault Slip During the Initiation Phase of the 2017 MW = 6.9 Valparaíso Earthquake [PDF]
Geophysical Research Letters, 2021 Transient deformation associated with foreshocks activity has been observed before large earthquakes, suggesting the occurrence of a detectable preseismic slow slip during the initiation phase.
Emmanuel Caballero +5 more
doaj +2 more sources
On catching the preparatory phase of damaging earthquakes: an example from central Italy [PDF]
Scientific Reports, 2023 How, when and where large earthquakes are generated remain fundamental unsolved scientific questions. Intercepting when a fault system starts deviating from its steady behavior by monitoring the spatio-temporal evolution and dynamic source properties of ...
Matteo Picozzi +3 more
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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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Incorporating Foreshocks in an Epidemic-like Description of Seismic Occurrence in Italy
Applied Sciences, 2023 The Epidemic Type Aftershock Sequence (ETAS) model is a widely used tool for cluster analysis and forecasting, owing to its ability to accurately predict aftershock occurrences.
Giuseppe Petrillo, Eugenio Lippiello
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Some characteristics of foreshocks and aftershocks of the 2022 ML6.8 Chihshang, Taiwan, earthquake sequence [PDF]
Frontiers in Earth ScienceForeshocks and aftershocks occurred before and after the ML6.8 (Mw7.0) earthquake in eastern Taiwan on 18 September 2022. We explore the epicentral distribution and temporal variations for the mainshock, foreshocks, and aftershocks.
Kou-Cheng Chen +4 more
doaj +2 more sources