Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/7579
DC Field | Value | Language |
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dc.contributor.authorall | O’Brien, G. S.; School of Geological Sciences, University College Dublin, Dublin, Ireland | en |
dc.contributor.authorall | Lokmer, I.; School of Geological Sciences, University College Dublin, Dublin, Ireland | en |
dc.contributor.authorall | De Barros, L.; School of Geological Sciences, University College Dublin, Dublin, Ireland | en |
dc.contributor.authorall | Bean, C. J.; School of Geological Sciences, University College Dublin, Dublin, Ireland | en |
dc.contributor.authorall | Saccorotti, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia | en |
dc.contributor.authorall | Metaxian, J. P.; LGIT, Universite de Savoie, IRD, CNRS, Chambery, France | en |
dc.contributor.authorall | Patanè, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.date.accessioned | 2012-01-26T12:53:17Z | en |
dc.date.available | 2012-01-26T12:53:17Z | en |
dc.date.issued | 2011-01 | en |
dc.identifier.uri | http://hdl.handle.net/2122/7579 | en |
dc.description.abstract | We present the first application of a time reverse location method in a volcanic setting, for a family of long-period (LP) events recorded on Mt Etna. Results are compared with locations determined using a full moment tensor grid search inversion and cross-correlation method. From 2008 June 18 to July 3, 50 broad-band seismic stations were deployed on Mt Etna, Italy, in close proximity to the summit. Two families of LP events were detected with dominant spectral peaks around 0.9 Hz. The large number of stations close to the summit allowed us to locate all events in both families using a time reversal location method. The method involves taking the seismic signal, reversing it in time, and using it as a seismic source in a numerical seismic wave simulator where the reversed signals propagate through the numerical model, interfere constructively and destructively, and focus on the original source location. The source location is the computational cell with the largest displacement magnitude at the time of maximum energy current density inside the grid. Before we located the two LP families we first applied the method to two synthetic data sets and found a good fit between the time reverse location and true synthetic location for a known velocity model. The time reverse location results of the two families show a shallow seismic region close to the summit in agreement with the locations using a moment tensor full waveform inversion method and a cross-correlation location method. | en |
dc.language.iso | English | en |
dc.publisher.name | Wiley | en |
dc.relation.ispartof | Geophysical Journal International | en |
dc.relation.ispartofseries | 1/184(2011) | en |
dc.relation.isversionof | http://hdl.handle.net/2122/6740 | en |
dc.subject | Volcano seismology | en |
dc.subject | Computational seismology | en |
dc.subject | Wave propagation | en |
dc.title | Time reverse location of seismic long-period events recorded on Mt Etna | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 452-462 | en |
dc.identifier.URL | http://onlinelibrary.wiley.com/doi/10.1111/j.1365-246X.2010.04851.x/full | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis | en |
dc.identifier.doi | 10.1111/j.1365-246X.2010.04851.x | en |
dc.description.obiettivoSpecifico | 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | O’Brien, G. S. | en |
dc.contributor.author | Lokmer, I. | en |
dc.contributor.author | De Barros, L. | en |
dc.contributor.author | Bean, C. J. | en |
dc.contributor.author | Saccorotti, G. | en |
dc.contributor.author | Metaxian, J. P. | en |
dc.contributor.author | Patanè, D. | en |
dc.contributor.department | School of Geological Sciences, University College Dublin, Dublin, Ireland | en |
dc.contributor.department | School of Geological Sciences, University College Dublin, Dublin, Ireland | en |
dc.contributor.department | School of Geological Sciences, University College Dublin, Dublin, Ireland | en |
dc.contributor.department | School of Geological Sciences, University College Dublin, Dublin, Ireland | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia | en |
dc.contributor.department | LGIT, Universite de Savoie, IRD, CNRS, Chambery, France | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | School of Geological Sciences, University College Dublin, Dublin, Ireland | - |
crisitem.author.dept | School of Geological Sciences, University College Dublin, Dublin, Ireland | - |
crisitem.author.dept | Seismology and Computational Rock Physics Laboratory, School of Geological Sciences, University College Dublin, Belfield, Ireland | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia | - |
crisitem.author.dept | Institut de Physique du Globe, France | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.orcid | 0000-0003-2915-1446 | - |
crisitem.author.orcid | 0000-0001-9410-5126 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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GJI_OBrien_etal_2011.pdf | 1.46 MB | Adobe PDF |
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