Results 81 to 90 of about 7,837 (204)

Analysis of microseismicity framing ML > 2.5 earthquakes at The Geysers geothermal field, California [PDF]

open access: yes, 2019
Preparatory mechanisms accompanying or leading to nucleation of larger earthquakes have been observed at both laboratory and field scales, but conditions favoring the occurrence of observable preparatory processes are still largely unknown. In particular,
Bentz, Stephan   +4 more
core   +1 more source

Toward Recognizing the Waveform of Foreshocks

open access: yesGeophysical Research Letters
The identification of seismic precursors remains a fundamental challenge. Foreshocks are often indistinguishable from regular seismic sequences, making it difficult to determine whether they precede a larger rupture.
E. Lippiello   +3 more
doaj   +1 more source

Foreshocks, b Value Map, and Aftershock Triggering for the 2011 Mw 5.7 Virginia Earthquake

open access: yesJournal of Geophysical Research: Solid Earth, 2018
The 2011 Mw 5.7 Virginia earthquake and subsequent dense deployment provide us an unprecedented opportunity to study in detail an earthquake sequence within stable continental United States.
Xiaofeng Meng   +2 more
semanticscholar   +1 more source

The foreshock activity of the 1971 San Fernando earthquake, California [PDF]

open access: yes, 1978
All of the earthquakes which occurred in the epicentral area of the 1971 San Fernando earthquake during the period from 1960 to 1970 were relocated by using the master-event method. Five events from 1969 to 1970 are located within a small area around the
Ishida, Mizuho, Kanamori, Hiroo
core  

Universal avalanche statistics and triggering close to failure in a mean field model of rheological fracture

open access: yes, 2018
The hypothesis of critical failure relates the presence of an ultimate stability point in the structural constitutive equation of materials to a divergence of characteristic scales in the microscopic dynamics responsible for deformation. Avalanche models
Baró, Jordi, Davidsen, Jörn
core   +1 more source

Variations in precursory slip behavior resulting from frictional heterogeneity

open access: yesProgress 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

Scale free networks of earthquakes and aftershocks

open access: yes, 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   +21 more
core   +1 more source

Machine Learning Predicts Earthquakes in the Continuum Model of a Rate‐And‐State Fault With Frictional Heterogeneities

open access: yesGeophysical Research Letters
Machine learning (ML) has been used to study the predictability of laboratory earthquakes. However, the question remains whether or not this approach can be applied in a tectonic setting where one may have to rely on sparse earthquake catalogs, and where
Reiju Norisugi   +2 more
doaj   +1 more source

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

open access: yesGeosciences
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   +3 more
doaj   +1 more source

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

open access: yes, 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.   +5 more
core  

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