The earthquake magnitude is influenced by previous seismicity (bibtex)
by Lippiello E, Godano C, de Arcangelis L
Abstract:
Seismic occurrence is characterized by clustering in space, time and magnitude. Correlations between magnitudes of subsequent events have been recently attributed to catalog incompleteness. Here we investigate the effect of catalog completeness on the amplitude of magnitude correlations. The analysis of two California regions with different levels of catalog accuracy and different lower magnitude thresholds indicate that the amplitude of correlations does not depend on catalog incompleteness. Conversely, correlations are controlled by the probability that two events belong to the same mainshock-aftershock sequence. Numerical simulations of the ETAS model, where magnitude correlations are absent by construction, provide a counter-test supporting our conclusions.
Reference:
The earthquake magnitude is influenced by previous seismicity (Lippiello E, Godano C, de Arcangelis L), In GEOPHYSICAL RESEARCH LETTERS, volume 39, 2012. (Articolo in rivista)
Bibtex Entry:
@article{eub12b,
author = {Lippiello E, and Godano C, and de Arcangelis L,},
pages = {L05309 p1-L05309 p5},
title = {The earthquake magnitude is influenced by previous seismicity},
volume = {39},
note = {Articolo in rivista},
issn = {0094-8276},
journal = {GEOPHYSICAL RESEARCH LETTERS},
doi = {10.1029/2012GL051083},
year = {2012},
wosId = {WOS:000301503600005},
scopusId = {2-s2.0-84858182771},
abstract = {Seismic occurrence is characterized by clustering in
space, time and magnitude. Correlations between magnitudes
of subsequent events have been recently attributed to catalog
incompleteness. Here we investigate the effect of catalog
completeness on the amplitude of magnitude correlations.
The analysis of two California regions with different levels
of catalog accuracy and different lower magnitude thresholds
indicate that the amplitude of correlations does not depend
on catalog incompleteness. Conversely, correlations are
controlled by the probability that two events belong to the
same mainshock-aftershock sequence. Numerical simulations
of the ETAS model, where magnitude correlations are
absent by construction, provide a counter-test supporting
our conclusions.}
}
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