Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/2251| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Bianco, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
| dc.contributor.authorall | Scarfì, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.contributor.authorall | Del Pezzo, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
| dc.contributor.authorall | Patanè, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.date.accessioned | 2007-07-03T08:21:18Z | en |
| dc.date.available | 2007-07-03T08:21:18Z | en |
| dc.date.issued | 2006 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/2251 | en |
| dc.description.abstract | The time delays and polarizations of shear wave splitting above small earthquakes show variations before the 2001 July 17–August 9 2001 flank eruption on Mt Etna, Sicily. Normalized time delays, measured by singular value decomposition, show a systematic increase starting several days before the onset of the eruption. On several occasions before the eruption, the polarization directions of the shear waves at Station MNT, closest to the eruption, show 90◦- flips where the faster and slower split shear waves exchange polarizations. The last 90◦-flip being 5 days before the onset of the eruption. The time delays also exhibit a sudden decrease shortly before the start of the eruption suggesting the possible occurrence of a ‘relaxation’ phenomena, due to crack coalescence. This behaviour has many similarities to that observed before a number of earthquakes elsewhere. | en |
| dc.format.extent | 483277 bytes | en |
| dc.format.mimetype | application/pdf | en |
| dc.language.iso | English | en |
| dc.relation.ispartof | Geophys. J. Int. | en |
| dc.relation.ispartofseries | /167 (2006) | en |
| dc.subject | cracked media, | en |
| dc.subject | seismic anisotropy, | en |
| dc.subject | shear wave splitting, | en |
| dc.subject | volcanic activity, | en |
| dc.subject | volcanic structure, | en |
| dc.subject | wave propagation. | en |
| dc.title | Shear wave splitting changes associated with the 2001 volcanic eruption on Mt. Etna | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | 959-967 | en |
| dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy | 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.2006.03152.x | en |
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Int., 160, 1027–1043. Shieh, C.F., 1997. Estimation of shear-wave splitting time using orthogonal transformation, Geophysics, 62, 657–661. Tang, C., Rial, J.A. & Lees, J.M., 2005. Shear-wave splitting: A diagnostic tool to monitor fluid pressure in geothermal fields, Geophys. Res. Lett., 32, L21317, doi:10.1029/2005GL023551. Teanby, N., Kendall, J.M., Jones, R.H. & Barkved, O., 2004. Stress-induced temporal variations in seismic anisotropy observed in microseismic data, Geophys. J. Int., 156, 459–466. Volti, T. & Crampin, S., 2003a. A four-year study of shear-wave splitting in Iceland: 1. Background and preliminary analysis, in New insights into structural interpretation and modelling,Vol. 212, pp. 117–133, ed. Nieuwland, D.A., Geol. Soc. Lond., Spec. Publ. Volti, T. & Crampin, S., 2003b. A four-year study of shear-wave splitting in Iceland: 2. Temporal changes before earthquakes and volcanic eruptions, in New insights into structural interpretation and modelling,Vol. 212, pp. 135–149, ed. Nieuwland, D.A., Geol. Soc. Lond., Spec. Publ. Zatsepin, S.V. & Crampin, S., 1997. Modelling the compliance of crustal rock: I - response of shear-wave splitting to differential stress, Geophys. J. Int., 129, 477–494. | en |
| dc.description.fulltext | open | en |
| dc.contributor.author | Bianco, F. | en |
| dc.contributor.author | Scarfì, L. | en |
| dc.contributor.author | Del Pezzo, E. | en |
| dc.contributor.author | Patanè, D. | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | 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 | open | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.fulltext | With Fulltext | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
| crisitem.author.orcid | 0000-0001-5400-7724 | - |
| crisitem.author.orcid | 0000-0002-5995-3880 | - |
| crisitem.author.orcid | 0000-0002-6981-5967 | - |
| 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.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 | - |
| 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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