Results 91 to 100 of about 3,946 (197)

Apparent Clustering and Apparent Background Earthquakes Biased by Undetected Seismicity

, 2005
In models of triggered seismicity and in their inversion with empirical data, the detection threshold m_d is commonly equated to the magnitude m_0 of the smallest triggering earthquake. This unjustified assumption neglects the possibility of shocks below
Ben-Zion, Console, Didier Sornette, Dieterich, Felzer, Helmstetter, Helmstetter, Helmstetter, Helmstetter, Helmstetter, Helmstetter, Helmstetter, Kagan, Kagan, Kagan, Kagan, Maximillian J. Werner, Nechad, Ogata, Ogata, Ouillon, Reasenberg, Richardson, Sellers, Sornette, Sornette, Sornette, Utsu, Zhuang   +28 more
core   +1 more source

A Rate‐and‐State Friction Based Criterion for the Probability of Earthquake Fault Jumps

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Geometrical complexities in natural fault zones, such as steps and gaps, pose a challenge in seismic hazard studies as they can act as obstacles to seismic ruptures. In this study, we propose a criterion, which is based on the rate‐and‐state equation, to estimate the efficiency of an earthquake rupture to jump between two spatially ...
Sylvain Michel, Oona Scotti, Sebastien Hok, Harsha S. Bhat, Navid Kheirdast, Pierre Romanet, Michelle Almakari, Jinhui Cheng   +7 more
wiley   +1 more source

Different Radiation Characteristics Between Foreshocks and Aftershocks of the 2016 Mw7.0 Kumamoto Earthquake in Kyushu, Japan: Implication of Pore Pressure, Stress Concentration, and Loading Rate

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract We estimated the scaled energy (eR ${e}_{R}$) for small earthquakes (1.5≤Mjma≤3.0 $1.5\mathit{\le }{M}_{\text{jma}}\mathit{\le }3.0$) in the focal area of the 2016 Mw 7.0 Kumamoto earthquake to examine the underlying physical processes governing the foreshocks‐mainshock‐aftershock sequence.
Masaki Orimo, Keisuke Yoshida, Toru Matsuzawa, Akira Hasegawa, Mare Yamamoto   +4 more
wiley   +1 more source

Variations in precursory slip behavior resulting from frictional heterogeneity

Progress in Earth and Planetary Science, 2018
Precursory seismicity is often observed before a large earthquake. Small foreshocks occur within the mainshock rupture area, which cannot be explained by simple models that assume homogeneous friction on the entire fault.
Suguru Yabe, Satoshi Ide
doaj   +1 more source

Real-Time Foreshock–Aftershock–Swarm Discrimination During the 2025 Seismic Crisis near Santorini Volcano, Greece: Earthquake Statistics and Complex Networks

Geosciences
The advanced determination of the type (foreshock–aftershock–swarm) of an ongoing seismic cluster is quite challenging; only retrospective solutions have thus far been proposed.
Ioanna Triantafyllou, Gerassimos A. Papadopoulos, Constantinos Siettos, Konstantinos Spiliotis   +3 more
doaj   +1 more source

Foreshock activity and its probabilistic relation to earthquake occurrence in Albania and the surrounding area

Annals of Geophysics, 1999
We investigate some characteristics of foreshock activity of moderate and large earthquakes which occurred in the present century in Albania and the surrounding area. Using a prediction algorithm, based on possible foreshocks, we obtained a probabilistic
K. Irikura, K. Matsumura, V. Peçi, K. Maeda   +3 more
doaj   +1 more source

Scale free networks of earthquakes and aftershocks

, 2003
We propose a new metric to quantify the correlation between any two earthquakes. The metric consists of a product involving the time interval and spatial distance between two events, as well as the magnitude of the first one.
A. Helmstetter, A. Wagner, B. Gutenberg, C. Frohlich, C. H. Scholz, D. P. Hill, D. Stauffer, D. Turcotte, F. Omori, G. M. Molchan, J. Gardner, L. Knopoff, L. Knopoff, M. Faloutsos, Marco Baiesi, Maya Paczuski, P. Bak, P. Bak, T. Hirata, T. Utsu, V. Keilis-Borok, Y. Y. Kagan   +21 more
core   +1 more source

Interplate seismicity at the CRISP site: the 2002 Osa earthquake sequence [PDF]

, 2011
The Costa Rica Seismogenesis Project (CRISP) is designed to explore the processes involved in the nucleation of large interplate earthquakes in erosional subduction zones.
Arroyo, Ivonne G., Behrmann, Jan, Grevemeyer, Ingo, Husen, S., Ranero, César R., von Huene, Roland   +5 more
core  

Renormalization of earthquake aftershocks

, 1999
Together with the Gutenberg-Richter distribution of earthquake magnitudes, Omori's law is the best established empirical characterization of earthquake sequences and states that the number of smaller earthquakes per unit time triggered by a main shock ...
Anne Sornette, Bak, Bowman, Das, Dattatrayam, Didier Sornette, Gnedenko, Grasso, Haintz, Henderson, Hill, Hough, Huang, Kagan, Kagan, Kagan, Kagan, Kisslinger, Knopoff, Morse, Scholz, Shaw, Sornette, Steeples, Wilson   +24 more
core   +1 more source

Earthquake Arrival Association with Backprojection and Graph Theory

, 2019
The association of seismic wave arrivals with causative earthquakes becomes progressively more challenging as arrival detection methods become more sensitive, and particularly when earthquake rates are high.
Delorey, Andrew A., Gomberg, Joan, Johnson, Paul A., McBrearty, Ian W.   +3 more
core   +1 more source