Results 51 to 60 of about 2,082 (203)
Earthquake Engineering &Structural Dynamics, EarlyView.ABSTRACT We perform probabilistic seismic hazard analysis (PSHA) in the Shillong Plateau by clubbing the up‐to‐date earthquake data and seismotectonic properties of the study area. Twenty‐one areal seismic sources are delineated based on the updated earthquake catalog, tectonic, and fault plane solutions.
Mohd Shahabuddin +2 more
wiley +1 more source
3-D global hybrid simulations of magnetospheric response to foreshock processes
Earth, Planets and Space, 2021 It has been suggested that ion foreshock waves originating in the solar wind upstream of the quasi-parallel (Q-||) shock can impact the planetary magnetosphere leading to standing shear Alfvén waves, i.e., the field line resonances (FLRs). In this paper,
Feng Shi +4 more
doaj +1 more source
Wavelet‐Based Hurst Exponent Estimation
WIREs Computational Statistics, Volume 18, Issue 3, September 2026.The review explores how wavelet‐based methods for estimating the Hurst parameters have developed from their theoretical roots to real‐world applications in fields like biology, engineering, and telecommunications. The review aims to highlight key techniques, compare their strengths and limitations, and point out challenges that still need to be ...
Dixon Vimalajeewa +2 more
wiley +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
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
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
Strong foreshock signal preceding the L'Aquila (Italy) earthquake (Mw 6.3) of 6 April 2009 [PDF]
Natural Hazards and Earth System Sciences, 2010 We used the earthquake catalogue of INGV extending from 1 January 2006 to 30 June 2009 to detect significant changes before and after the 6 April 2009 L'Aquila mainshock (Mw=6.3) in the seismicity rate, r (events/day), and in b-value.
G. Minadakis +3 more
doaj
A case study of large-amplitude ULF waves in the Martian foreshock
Earth and Planetary Physics, 2020 Foreshock ultralow frequency (ULF) waves constitute a significant physical phenomenon in the plasma environment of terrestrial planets. The occurrence of these waves, associated with backstreaming particles reflected and accelerated at the bow shock ...
LiCan Shan, YaSong Ge, AiMin Du
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