Results 61 to 70 of about 1,236 (203)
Prediction probabilities from foreshocks [PDF]
, 1991 When any earthquake occurs, the possibility that it might be a foreshock increases the probability that a larger earthquake will occur nearby within the next few days.
Jones, Lucile M., Agnew, Duncan Carr
core
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
doaj +1 more source
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
openaire +1 more source
Validation of ShakeMaps Created From Global Navigation Satellite System (GNSS) Velocities
Earthquake Spectra, Volume 42, Issue 3, August 2026.Ground velocity observations generated through a time difference of Global Navigation Satellite Systems (GNSS) phase observables and orbits have been shown to be comparable to seismic recordings without clipping during intense ground motions. Computing GNSS velocities is also computationally scalable and increases the density of ground motion ...
Jensen V. DeGrande, Brendan W. Crowell
wiley +1 more source
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
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.Abstract On 9 November 2025, a Mw 6.8 Sanriku‐Oki earthquake struck a Japan Trench segment with inferred recurrent aseismic slip and Mw ∼7 earthquakes. Using S‐net seafloor data, we examine the preparatory and post‐mainshock evolution of this foreshock–mainshock–aftershock sequence.
Keisuke Yoshida
wiley +1 more source
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
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On the Statistical Significance of Foreshock Sequences in Southern California
Geophysical Research Letters, 2020 Earthquake foreshocks may provide information that is critical to short‐term earthquake forecasting. However, foreshocks are far from ubiquitously observed, which makes the interpretation of ongoing seismic sequences problematic.
M. P. A. van denEnde, J.‐P. Ampuero
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract The physical conditions governing earthquake initiation are largely unknown, particularly in the minutes to seconds preceding rupture. While there is geodetic and seismic evidence of precursory activity in the hours to weeks prior to large earthquakes, the observational evidence immediately preceding the earthquake rupture is limited and ...
A. M. McPherson, C. Tape, Y. Kaneko
wiley +1 more source
Physics‐Informed Neural Networks for Modeling the Martian Induced Magnetosphere
Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.Abstract Understanding the magnetic field environment around Mars and its response to upstream solar wind conditions provide key insights into the processes driving atmospheric ion escape. To date, global models of Martian induced magnetosphere have been exclusively physics‐based, relying on computationally intensive simulations. For the first time, we
Jiawei Gao +8 more
wiley +1 more source