Results 21 to 30 of about 10,317 (215)

A rate-state model for aftershocks triggered by dislocation on a rectangular fault: a review and new insights

open access: yesAnnals of Geophysics, 2006
We compute the static displacement, stress, strain and the Coulomb failure stress produced in an elastic medium by a finite size rectangular fault after its dislocation with uniform stress drop but a non uniform dislocation on the source.
F. Catalli, R. Console
doaj   +1 more source

Earthquake Productivity Law in a Wide Magnitude Range

open access: yesFrontiers in Earth Science, 2022
Earthquakes are usually followed by aftershocks. The number of aftershocks—the so-called productivity—depends on the magnitude of the earthquake. In seismic modeling it is usually assumed that the number of aftershocks is approximately the same for ...
Peter Shebalin   +3 more
doaj   +1 more source

Analysis of short time-space range seismicity patterns in Italy

open access: yesAnnals of Geophysics, 1997
In our paper we analyze the data base obtained from the observations of the Italian Seismological Network from 1975 to 1994 by using a simple algotithm to determine the rate of occurrence of seismic events condi- tioned by the occurrence of previous ...
M. Imotof   +3 more
doaj   +1 more source

On the Aftershocks of Oga Earthquake, May 7, 1964 [PDF]

open access: yes, 2010
application/pdf紀要類 (bulletin)2640908 bytesdepartmental bulletin ...
Research Group For Aftershocks
core   +1 more source

Mainshock-Integrated Aftershock Vulnerability Assessment of Bridge Structures

open access: yesApplied Sciences, 2020
Seismic fragility analysis is often conducted to quantify the vulnerability of civil structures under earthquake excitation. In recent years, besides mainshocks, strong aftershocks have been often witnessed to induce structural damage to engineered ...
Xuan Guo, Zheyu Zhang, ZhiQiang Chen
doaj   +1 more source

Mw ≥ 5 aftershocks of the 2008 Sichuan earthquake: Analysis of temporal variation of Omori Law p-value

open access: yesFrontiers in Earth Science, 2022
Strong to great earthquakes considerably weaken the structural strength of the subsurface strata and civil constructions. The occurrence of Mw ≥ 5 aftershocks further contributes to the loss of human lives and damage to property.
Harsh K. Gupta, Rajesh Rekapalli
doaj   +1 more source

About the aftershocks, the Omori law, and the Utsu formula [PDF]

open access: yes, 2023
After the main shock of an earthquake, a stream of aftershocks that does not subside for a long time is usually observed. Fusakichi Omori found that the frequency of aftershocks decreases hyperbolically with time. It has recently been observed that Omori'
Klain, Boris   +3 more
core   +1 more source

Regional variations in the diffusion of triggered seismicity [PDF]

open access: yes, 2005
We determine the spatiotemporal characteristics of interearthquake triggering in the International Seismological Centre catalogue on regional and global scales. We pose a null hypothesis of spatially clustered, temporally random seismicity, and determine
Ian G. Main   +3 more
core   +1 more source

Earthquakes in the Shadows: Why Aftershocks Occur at Surprising Locations

open access: yesThe Seismic Record, 2022
For decades there has been a debate about the relative effects of dynamic versus static stress triggering of aftershocks. According to the static Coulomb stress change hypothesis, aftershocks should not occur in stress shadows—regions where static ...
Jeanne L. Hardebeck, Ruth A. Harris
doaj   +1 more source

Forecasting Strong Subsequent Earthquakes in Greece with the Machine Learning Algorithm NESTORE

open access: yesEntropy, 2023
Aftershocks of earthquakes can destroy many urban infrastructures and exacerbate the damage already inflicted upon weak structures. Therefore, it is important to have a method to forecast the probability of occurrence of stronger earthquakes in order to ...
Eleni-Apostolia Anyfadi   +3 more
doaj   +1 more source

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