Emergence of body waves from cross-correlation of short period seismic noise
Ambient noise correlation is now widely used in seismology to obtain the surface waves part of Green′s function. More difficult is the extraction of body waves from noise correlations. Using 42 temporary broad-band three components stations located on the northern part of the fennoscandian region, w...
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fthighwire:oai:open-archive.highwire.org:gji:188/2/549 2023-05-15T16:12:57+02:00 Emergence of body waves from cross-correlation of short period seismic noise Poli, P. Pedersen, H. A. Campillo, M. 2012-02-01 00:00:00.0 text/html http://gji.oxfordjournals.org/cgi/content/short/188/2/549 https://doi.org/10.1111/j.1365-246X.2011.05271.x en eng Oxford University Press http://gji.oxfordjournals.org/cgi/content/short/188/2/549 http://dx.doi.org/10.1111/j.1365-246X.2011.05271.x Copyright (C) 2012, Oxford University Press Seismology TEXT 2012 fthighwire https://doi.org/10.1111/j.1365-246X.2011.05271.x 2016-11-16T19:05:15Z Ambient noise correlation is now widely used in seismology to obtain the surface waves part of Green′s function. More difficult is the extraction of body waves from noise correlations. Using 42 temporary broad-band three components stations located on the northern part of the fennoscandian region, we identify high-frequency (0.5-2 Hz) body waves emerging from noise correlations for inter-station distances up to 550 km. The comparison of the noise correlations with earthquake data confirms that the observed waves can be interpreted as P and S waves reflected from the Moho. Because the crustal model of the area is well known, we also compared the noise correlations with synthetic seismograms, and found an excellent agreement between the travel times of all the observed phases. Polarization analysis provides a further argument to confirm the observation of body waves. Text Fennoscandian HighWire Press (Stanford University) Geophysical Journal International 188 2 549 558 |
institution |
Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Seismology |
spellingShingle |
Seismology Poli, P. Pedersen, H. A. Campillo, M. Emergence of body waves from cross-correlation of short period seismic noise |
topic_facet |
Seismology |
description |
Ambient noise correlation is now widely used in seismology to obtain the surface waves part of Green′s function. More difficult is the extraction of body waves from noise correlations. Using 42 temporary broad-band three components stations located on the northern part of the fennoscandian region, we identify high-frequency (0.5-2 Hz) body waves emerging from noise correlations for inter-station distances up to 550 km. The comparison of the noise correlations with earthquake data confirms that the observed waves can be interpreted as P and S waves reflected from the Moho. Because the crustal model of the area is well known, we also compared the noise correlations with synthetic seismograms, and found an excellent agreement between the travel times of all the observed phases. Polarization analysis provides a further argument to confirm the observation of body waves. |
format |
Text |
author |
Poli, P. Pedersen, H. A. Campillo, M. |
author_facet |
Poli, P. Pedersen, H. A. Campillo, M. |
author_sort |
Poli, P. |
title |
Emergence of body waves from cross-correlation of short period seismic noise |
title_short |
Emergence of body waves from cross-correlation of short period seismic noise |
title_full |
Emergence of body waves from cross-correlation of short period seismic noise |
title_fullStr |
Emergence of body waves from cross-correlation of short period seismic noise |
title_full_unstemmed |
Emergence of body waves from cross-correlation of short period seismic noise |
title_sort |
emergence of body waves from cross-correlation of short period seismic noise |
publisher |
Oxford University Press |
publishDate |
2012 |
url |
http://gji.oxfordjournals.org/cgi/content/short/188/2/549 https://doi.org/10.1111/j.1365-246X.2011.05271.x |
genre |
Fennoscandian |
genre_facet |
Fennoscandian |
op_relation |
http://gji.oxfordjournals.org/cgi/content/short/188/2/549 http://dx.doi.org/10.1111/j.1365-246X.2011.05271.x |
op_rights |
Copyright (C) 2012, Oxford University Press |
op_doi |
https://doi.org/10.1111/j.1365-246X.2011.05271.x |
container_title |
Geophysical Journal International |
container_volume |
188 |
container_issue |
2 |
container_start_page |
549 |
op_container_end_page |
558 |
_version_ |
1765998562035892224 |