Results 81 to 90 of about 28,952 (217)

Fault Kinematic Controls on the Spatio‐Temporal Proximity of the 2023 Mw 7.8‐7.7 Türkiye Earthquakes

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract The mechanism governing the spatio‐temporal proximity of the 2023 Mw 7.8‐7.7 Türkiye earthquakes remains enigmatic. Here, we used dense geodetic observations integrated with dual‐fault screw dislocation, Euler‐vector‐constrained block, and strain‐rate models to investigate the interseismic kinematics and pre‐stress state of the East Anatolian ...
Wenbin Xu, Kai Sun, Qijie Wang, Guojie Meng, Lei Xie, Ali Özkan   +5 more
wiley   +1 more source

Objective Estimation of Spatially Variable Parameters of Epidemic Type Aftershock Sequence Model: Application to California

, 2017
The ETAS model is widely employed to model the spatio-temporal distribution of earthquakes, generally using spatially invariant parameters. We propose an efficient method for the estimation of spatially varying parameters, using the Expectation ...
Nandan, Shyam, Ouillon, Guy, Sornette, Didier, Wiemer, Stefan   +3 more
core   +1 more source

Partial Ruptures, Cascading Multi‐Fault Ruptures, and Aftershocks in 2D Random Fault Network

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract The Gutenberg‐Richter law for the distribution of earthquake magnitude and the Omori law for the decay of aftershocks are two universal laws in seismicity. Although numerical models have been developed to reproduce these laws, they sometimes produce many more foreshocks and fewer aftershocks than observed.
So Ozawa
wiley   +1 more source

The oscillatory behaviour of the aftershocks rate of the 2001 Bhuj earthquake, India: observation and interpretation

Annals of Geophysics, 2004
A damaging earthquake of Mw 7.7, which struck the Bhuj region of India on January 26, 2001, was followed by a large number of aftershocks. The aftershock data available at Gauribidanur Seismic Array Station (GBA), India, till 869 h following the main ...
E. Unnikrishnan, A. G. Venkatesh Prasad, M. M. Abdul Razak, G. Jayachandran Nair   +3 more
doaj   +1 more source

The mechanisms of spatial and temporal earthquake clustering

, 2009
The number of earthquakes as a function of magnitude decays as a power law. This trend is usually justified using spring-block models, where slips with the appropriate global statistics have been numerically observed.
A. B. Kolton, Baiesi, Baiesi, Bak, Bak, Baumberger, Ben-Zion, Ben-Zion, Bonamy, Braun, Burridge, Carlson, Chauve, Corral, Corral, Cugliandolo, Cule, Das, Dieterich, Dieterich, Dieterich, Dieterich, Durin, E. A. Jagla, Felzer, Fisher, Frohlich, Gomberg, Govaert, Gutenberg, Hainzl, Hainzl, Helmstetter, Helmstetter, Hergarten, Ho Huu, Ito, Jagla, Johnson, Lacombe, Le Doussal, Le Doussal, Lemerle, Marcellini, Marone, Marone, Marone, Mikumo, Moretti, Moulinet, Narayan, Narteau, Niemeijer, Nur, Olami, Omori, Perfettini, Persson, Repain, Rosso, Rosso, Rosso, Ruina, Scholz, Scholz, Scholz, Shaw, Utsu, Utsu, Wiemer, Zaliapin, Zapperi, Ziv, Ziv, Zöller   +74 more
core   +1 more source

19 Clustered Foreshock Sequences Along the San Jacinto Fault Zone: Possible Role of Frictional Heterogeneity in Extended Earthquake Nucleation

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Laboratory experiments and theoretical models suggest that earthquakes are preceded by extended nucleation phases, perhaps by slow but accelerating slip. However, such nucleation phases are hard to observe before natural earthquakes. Here we identify clustered foreshock sequences that could be nucleation signatures.
Hui Huang, Jessica C. Hawthorne
wiley   +1 more source

Mapping finite-fault earthquake slip using spatial correlation between seismicity and point-source Coulomb failure stress change

Seismica
Most earthquake energy release arises during fault slip many kilometers below the Earth’s surface. Understanding earthquakes and their hazard requires mapping the geometry and distribution of this slip.
Anthony Lomax
doaj   +1 more source

Trench‐Breaching Rupture of the 2025 Mw 8.8 Kamchatka Earthquake and How It Repeats the 1952 Event

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract The 29 July 2025 Mw 8.8 Kamchatka earthquake generated a trans‐Pacific tsunami. The hypocenter was nearly at the same location as the 1952 great earthquake (Mw 8.8–9.0). Determining whether the 2025 rupture reached the trench and how it relates to the 1952 event is crucial for understanding slip behavior along the Kamchatka subduction zone. We
Yifan Zhu, Chao An, Han Yue
wiley   +1 more source

Role of a Hidden Fault in the Early Process of the 2024 Mw7.5 Noto Peninsula Earthquake

Geophysical Research Letters
The 2024 Mw 7.5 Noto Peninsula, Japan, earthquake was initiated within the source region of intense swarm activity. To reveal the mainshock early process, we relocated the earthquake hypocenters and found that many key phenomena, including the mainshock ...
Keisuke Yoshida, Ryota Takagi, Yo Fukushima, Ryosuke Ando, Yusaku Ohta, Yoshihiro Hiramatsu   +5 more
doaj   +1 more source

Diminishing high‐frequency directivity due to a source effect: Empirical evidence from small earthquakes in the Abruzzo region, Italy

Geophysical Research Letters, 2016
The aim of this study is to investigate the directivity effects of ~250 aftershocks (magnitudes 3–5.5) of the Mw 6.1 2009 L'Aquila earthquake (central Italy).
F. Pacor, F. Gallovič, R. Puglia, L. Luzi, M. D'Amico   +4 more
doaj   +1 more source