We have developed a technique based on the move-out and stack of reflected
seismic phases from local earthquake seismograms. For a given interface
depth and a velocity model, the theoretical travel times of reflected/converted
phases in a 1D medium are computed and used to align in time the
vertical-component microearthquake records collected by a local seismic
network. The locations and origin times of events are preliminarily
estimated from P and S arrival times. Different seismic gathers are
obtained for each considered reflected/converted phase at that interface,
and the best interface depth is chosen as the one that maximizes
the value of a semblance function computed on moved-out records.This
method has been applied to seismic records of microearthquakes that
occur at Mt. Vesuvius volcano. The analysis confirms the evidence
for an 8 to 10-km-deep seismic discontinuity beneath the volcano,
which was previously identified, by migration of active seismic data,
as the roof of an extended magmatic sill. 10.1785/012003063
%0 Journal Article
%1 nisii_etal:2004
%A Nisii, Vincenzo
%A Zollo, Aldo
%A Iannaccone, Giovanni
%D 2004
%J Bulletin of the Seismological Society of America
%K geophysics seismics
%N 5
%P 1842--1849
%R 10.1785/012003063
%T Depth of a midcrustal discontinuity beneath Mt. Vesuvius from the
stacking of reflected and converted waves on local earthquake records
%U http://dx.doi.org/10.1785/012003063
%V 94
%X We have developed a technique based on the move-out and stack of reflected
seismic phases from local earthquake seismograms. For a given interface
depth and a velocity model, the theoretical travel times of reflected/converted
phases in a 1D medium are computed and used to align in time the
vertical-component microearthquake records collected by a local seismic
network. The locations and origin times of events are preliminarily
estimated from P and S arrival times. Different seismic gathers are
obtained for each considered reflected/converted phase at that interface,
and the best interface depth is chosen as the one that maximizes
the value of a semblance function computed on moved-out records.This
method has been applied to seismic records of microearthquakes that
occur at Mt. Vesuvius volcano. The analysis confirms the evidence
for an 8 to 10-km-deep seismic discontinuity beneath the volcano,
which was previously identified, by migration of active seismic data,
as the roof of an extended magmatic sill. 10.1785/012003063
@article{nisii_etal:2004,
abstract = {We have developed a technique based on the move-out and stack of reflected
seismic phases from local earthquake seismograms. For a given interface
depth and a velocity model, the theoretical travel times of reflected/converted
phases in a 1D medium are computed and used to align in time the
vertical-component microearthquake records collected by a local seismic
network. The locations and origin times of events are preliminarily
estimated from P and S arrival times. Different seismic gathers are
obtained for each considered reflected/converted phase at that interface,
and the best interface depth is chosen as the one that maximizes
the value of a semblance function computed on moved-out records.This
method has been applied to seismic records of microearthquakes that
occur at Mt. Vesuvius volcano. The analysis confirms the evidence
for an 8 to 10-km-deep seismic discontinuity beneath the volcano,
which was previously identified, by migration of active seismic data,
as the roof of an extended magmatic sill. 10.1785/012003063},
added-at = {2012-09-01T13:08:21.000+0200},
author = {Nisii, Vincenzo and Zollo, Aldo and Iannaccone, Giovanni},
biburl = {https://www.bibsonomy.org/bibtex/25eb76d53ab7dbb9b7493018c20eb29bc/nilsma},
day = 1,
doi = {10.1785/012003063},
interhash = {63a93da34ef10172a85c7639491ead97},
intrahash = {5eb76d53ab7dbb9b7493018c20eb29bc},
journal = {Bulletin of the Seismological Society of America},
keywords = {geophysics seismics},
month = oct,
number = 5,
pages = {1842--1849},
timestamp = {2021-02-09T13:27:42.000+0100},
title = {Depth of a midcrustal discontinuity beneath Mt. Vesuvius from the
stacking of reflected and converted waves on local earthquake records},
url = {http://dx.doi.org/10.1785/012003063},
volume = 94,
year = 2004
}