Results 51 to 60 of about 6,894 (231)
Comparing foreshock characteristics and foreshock forecasting in observed and simulated earthquake catalogs [PDF]
Journal of Geophysical Research: Solid Earth, 2014 AbstractIn this paper, we compare the empirical results regarding foreshocks obtained from the Japan data with results for synthetic catalogs in order to clarify whether or not the corresponding results are consistent with the description of the seismicity by a superposition of background activity and epidemic‐type aftershock sequence (ETAS) models ...
Yosihiko Ogata, Koichi Katsura
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Rare Occurrences of Non‐cascading Foreshock Activity in Southern California
Geophysical Research Letters, 2021 Earthquakes preceding large events are commonly referred to as foreshocks. They are often considered as precursory phenomena reflecting the nucleation process of the main rupture.
L. Moutote +3 more
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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 +4 more
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Earth, Planets and Space, 2021 We present here an analysis of the destructive Mw 6.2 earthquake sequence that took place on 14 January 2021 in Mamuju–Majene, West Sulawesi, Indonesia.
P. Supendi +18 more
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Nature Communications, 2021 Studies of Mercury’s foreshock have analyzed in detail the properties of ultra-low frequency waves. However, an open question remains in regards to understanding favorable conditions for these planetary foreshocks waves. Here, we report that 0.05–0.41 Hz
N. Romanelli, G. DiBraccio
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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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GéosciencesThe advanced determination of the type (foreshock–aftershock–swarm) of an ongoing seismic cluster is quite challenging; only retrospective solutions have thus far been proposed.
I. Triantafyllou +3 more
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Oblique propagation and temperature effects on the resonant right-hand ion beam instability
Frontiers in Astronomy and Space Sciences, 2023 The resonant right-hand instability (RHI) is often the dominant mode driven by reflected ions upstream of Earth’s quasi-parallel bow shock. In the tradition of Peter Gary, this paper further explores the right-hand instability using numerical solutions ...
Ari Le +4 more
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Huge July 2025 Kamchatka earthquake followed unusually productive foreshock sequence
TemblorA large foreshock that struck 10 days before the magnitude 8.8 Kamchatka earthquake brought the epicentral megathrust patch closer to failure and produced an exceptionally abundant burst of aftershocks.
R. Stein +4 more
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Annals of Geophysics, 1998 Time variations in the spatial distribution of earthquake epicentres are analyzed by application of the fractal correlation dimension method. The zone under investigation is located in Central Italy, bounded in longitude by 12.0 and 14.4 degrees east and
P. Tosi
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