Results 171 to 180 of about 2,530 (204)

Seismogenic strength and anatomy of mahendragarh-dehradun fault: implication to seismic risk. [PDF]

Sci Rep
Gera SK, Ammani A, Sandeep, Singh P, Mishra OP.   +4 more
europepmc   +1 more source

Evidence of megathrust earthquakes and seismic supercycles in subtropical Japan from millennia-old coral microatolls. [PDF]

Nat Commun
Debaecker S, Feuillet N, Satake K, Sowa K, Yamada M, Sato T, Nakamura M, Watanabe A, Saiki A, Saurel JM, Occhipinti G, Yu TL, Shen CC.   +12 more
europepmc   +1 more source

Relative Afterslip Moment Does Not Correlate With Aftershock Productivity: Implications for the Relationship Between Afterslip and Aftershocks

Geophysical Research Letters, 2022
AbstractAseismic afterslip has been proposed to drive aftershock sequences. Both afterslip moment and aftershock number broadly increase with mainshock size, but can vary beyond this scaling. We examine whether relative afterslip moment (afterslip moment/mainshock moment) correlates with several key aftershock sequence characteristics, including ...
Robert Churchill, Maximilian J Werner, Juliet Biggs   +2 more
exaly   +4 more sources

Afterslip (and only afterslip) following the 2004 Parkfield, California, earthquake [PDF]

Geophysical Research Letters, 2007
An analysis of the first two years of postseismic surface deformations from GPS reveals that afterslip is the only mechanism significantly contributing to postseismic deformation following the 2004 M6 Parkfield, California earthquake. Finite element modeling shows this event to have been too small to significantly stress the lower crust and upper ...
Andrew M Freed
exaly   +2 more sources

A Model of Aftershock Migration Driven by Afterslip

Geophysical Research Letters, 2018
AbstractAftershocks region have been extensively reported to expand logarithmically with time. The associated migration velocity is typically of the order of several km/decade but can be much larger, especially when observing early aftershock sequences, seismic swarms, or tremors.
Hugo Perfettini, William B Frank, David Marsan   +2 more
exaly   +3 more sources

Afterslip and aftershocks in the rate‐and‐state friction law [PDF]

Journal of Geophysical Research, 2009
We study how a stress perturbation generated by a main shock affects a fault obeying the rate‐state friction law using a simple slider block system. Depending on the model parameters and on the initial stress, the fault exhibits aftershocks, slow earthquakes, or decaying afterslip. We found several regimes with slip rate decaying as a power law of time,
Agnès Helmstetter, Bruce E Shaw
exaly   +6 more sources

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Afterslip, Tremor, and the Denali Fault Earthquake

Bulletin of the Seismological Society of America, 2012
We tested the hypothesis that afterslip should be accompanied by tremor using observations of seismic and aseismic deformation surrounding the 2002 M  7.9 Denali fault, Alaska, earthquake (DFE). Afterslip happens more frequently than spontaneous slow slip and has been observed in a wider range of tectonic environments, and thus the existence or absence
J. Gomberg, S. Prejean, N. Ruppert
openaire   +1 more source

On the mechanics of earthquake afterslip

Journal of Geophysical Research: Solid Earth, 1991
We propose a model for earthquake afterslip based on rate and state variable friction laws. In the model, afterslip is attributed to the interaction of a velocity‐weakening region at depth (within which earthquakes nucleate) with an upper region of velocity‐strengthening frictional behavior.
Marone C. J., Scholtz C. H., Bilham R.
openaire   +2 more sources

Evidence for afterslip on the San Fernando fault

Bulletin of the Seismological Society of America, 1975
Abstract Postearthquake changes in elevation across the Tujunga segment of the San Fernando fault in the period March 1971 to 1973-1974 indicate deformation similar in distribution to, but on a much smaller scale than, the coseismic deformation (the maximum postearthquake uplift is about 60 mm compared to the 2 m of coseismic uplift ...
J. C. Savage, J. P. Church
openaire   +1 more source

Space‐time distribution of afterslip following the 2009 L'Aquila earthquake

Journal of Geophysical Research: Solid Earth, 2012
The inversion of multitemporal DInSAR and GPS measurements unravels the coseismic and postseismic (afterslip) slip distributions associated with the 2009 MW 6.3 L'Aquila earthquake and provides insights into the rheological properties and long‐term behavior of the responsible structure, the Paganica fault. Well‐resolved patches of high postseismic slip
D'Agostino N, Cheloni D, Fornaro G, Giuliani R, Reale D   +4 more
openaire   +2 more sources