Results 41 to 50 of about 1,532 (175)
Recognizing the waveform of a foreshock [PDF]
, 2020 Abstract The 2011 Mw9.1 Tohoku, Japan, earthquake is the paradigmatic example of an earthquake anticipated by a significant foreshock activity, with a Mw7.3 earthquake occurred two days before, within about 10 km 1. Recent results 2 show that statistically relevant changes can be found in the magnitude distribution after the Mw7.3 foreshock but
Eugenio Lippiello +2 more
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The Role of Disorder in Foreshock Activity
GeosciencesForeshocks, observed before some large earthquakes, remain debated in terms of their origins and predictive value. While aftershocks fit well within bottom-up triggering models like ETAS, foreshocks may arise from distinct preparatory processes ...
Giuseppe Petrillo
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Entropy, 2019 The relation between the size of an earthquake mainshock preparation zone and the magnitude of the forthcoming mainshock is different between nucleation and domino-like cascade models.
Masashi Kamogawa +5 more
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Synchronization and desynchronization in the Olami-Feder-Christensen earthquake model and potential implications for real seismicity [PDF]
Nonlinear Processes in Geophysics, 2011 The Olami-Feder-Christensen model is probably the most studied model in the context of self-organized criticality and reproduces several statistical properties of real earthquakes.
S. Hergarten, R. Krenn
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Characteristics of foreshock activity inferred from the JMA earthquake catalog
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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The Seismic Record, 2023 We compute and analyze stress drops for 4175 earthquakes (M_L 0–5) in the 2008 Mogul, Nevada, swarm–mainshock sequence using a spectral decomposition approach that uses depth‐dependent path corrections.
Christine J. Ruhl +2 more
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A model of foreshock occurrence [PDF]
Geophysical Journal International, 1989 SUMMARY We have constructed a model for the occurrence of foreshocks and foreshock sequences. The foreshocks as well as the main shock are assumed to occur because of the abrupt coalescence of pre-existing cracks. Coalescence occurs if the stress intensity factors at the crack tips exceed a certain critical value.
T. Yamashita, L. Knopoff
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Can foreshocks be discriminated from seismic swarms?
, 2023 The largest earthquakes control large part of the energy budget of seismogenic structures which is progressively accumulated in the adjoining volumes meanwhile the fault system is kept locked.
Carlo Doglioni +4 more
core
Geophysical Research LettersWe investigate the spatiotemporal evolution of foreshocks preceding the 2025 Mw 8.8 Kamchatka earthquake by applying single‐station analysis to waveforms recorded at the nearest seismic station.
Ji Zhang +3 more
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Characteristics of Foreshock Subsolar Compressive Structures
Journal of Geophysical Research: Space Physics, 2023 Abstract The turbulent foreshock region upstream of the quasi‐parallel bow shock is dominated by waves and reflected particles that interact with each other and create a large number of different foreshock transients. The structures with the enhanced magnetic field, Short Large Amplitude Magnetic Structures, and density spikes named ...
Niki Xirogiannopoulou +3 more
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