We show that the low-pass filtered, peak amplitudes of initial P-
and S-wave seismic signals recorded in the vicinity of an occurring
earthquake source correlates with the earthquake magnitude and may
be used for real-time estimation of the event size in seismic early
warning applications. The earthquake size can be therefore estimated
using only a couple of seconds of signal from the P- or S-wave onsets,
i.e. while the rupture itself is still propagating and rupture dimension
is far from complete. We argue that dynamic stress release and/or
slip duration on the fault in the very early stage of seismic fracture,
scales both with the observed peak amplitude and with the elastic
energy available for fracture propagation. The probability that a
fracture grows to a larger size should scale with the energy initially
available.
%0 Journal Article
%1 zollo_etal:2006a
%A Zollo, Aldo
%A Lancieri, Maria
%A Nielsen, Stefan
%D 2006
%J Geophysical Research Letters
%K geophysics seismology
%N 23
%P L23312+
%R 10.1029/2006GL027795
%T Earthquake magnitude estimation from peak amplitudes of very early
seismic signals on strong motion records
%U http://dx.doi.org/10.1029/2006GL027795
%V 33
%X We show that the low-pass filtered, peak amplitudes of initial P-
and S-wave seismic signals recorded in the vicinity of an occurring
earthquake source correlates with the earthquake magnitude and may
be used for real-time estimation of the event size in seismic early
warning applications. The earthquake size can be therefore estimated
using only a couple of seconds of signal from the P- or S-wave onsets,
i.e. while the rupture itself is still propagating and rupture dimension
is far from complete. We argue that dynamic stress release and/or
slip duration on the fault in the very early stage of seismic fracture,
scales both with the observed peak amplitude and with the elastic
energy available for fracture propagation. The probability that a
fracture grows to a larger size should scale with the energy initially
available.
@article{zollo_etal:2006a,
abstract = {We show that the low-pass filtered, peak amplitudes of initial P-
and S-wave seismic signals recorded in the vicinity of an occurring
earthquake source correlates with the earthquake magnitude and may
be used for real-time estimation of the event size in seismic early
warning applications. The earthquake size can be therefore estimated
using only a couple of seconds of signal from the P- or S-wave onsets,
i.e. while the rupture itself is still propagating and rupture dimension
is far from complete. We argue that dynamic stress release and/or
slip duration on the fault in the very early stage of seismic fracture,
scales both with the observed peak amplitude and with the elastic
energy available for fracture propagation. The probability that a
fracture grows to a larger size should scale with the energy initially
available.},
added-at = {2012-09-01T13:08:21.000+0200},
author = {Zollo, Aldo and Lancieri, Maria and Nielsen, Stefan},
biburl = {https://www.bibsonomy.org/bibtex/2db7eb439b99c2f06ef921f730550363c/nilsma},
day = 15,
doi = {10.1029/2006GL027795},
interhash = {ecc98fc2708a9e1654858848a086ffa2},
intrahash = {db7eb439b99c2f06ef921f730550363c},
issn = {0094-8276},
journal = {Geophysical Research Letters},
keywords = {geophysics seismology},
month = dec,
number = 23,
pages = {L23312+},
timestamp = {2021-02-09T13:24:20.000+0100},
title = {Earthquake magnitude estimation from peak amplitudes of very early
seismic signals on strong motion records},
url = {http://dx.doi.org/10.1029/2006GL027795},
volume = 33,
year = 2006
}