Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5129| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Palano, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.contributor.authorall | Gresta, S.; Università degli Studi di Catania, Dipartimento di Scienze Geologiche, Corso Italia 57, 95129 Catania, Italy | en |
| dc.contributor.authorall | Puglisi, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.date.accessioned | 2009-07-22T09:22:45Z | en |
| dc.date.available | 2009-07-22T09:22:45Z | en |
| dc.date.issued | 2009-08-03 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/5129 | en |
| dc.description.abstract | Major results of post-intrusive GPS monitoring of the five months encompassing and following the onset of 2002-03 Mt. Etna eruption are presented and discussed here. The overall ground deformation pattern is characterized by a time-dependent relaxation function. We evaluated two different parameterizations of relaxation functions, each one linked to a different relaxation process: i) viscoelastic relaxation and ii) after-slip mechanism. The former indicated that the process occurred within a weak layer characterized by viscosity values ranging between 7.1 • 1014 Pa s and 1.3 • 1015 Pa s. The latter evidenced that frictional processes occurred beneath a layer of velocity-strengthening having a thickness with values ranging between 0.4 km and 1.7 km. Either model may explain the observed time-dependent deformation, both from the statistical point of view and the comparison with geologic and seismic information. Although we are unable to favour one model rather than the other, these results indicate that the mechanism, responsible for the observed post-intrusive deformation, occurs within a sliding “zone” located inside the clayey sedimentary basement. | en |
| dc.description.sponsorship | This study was undertaken with financial support from the FLANK project (DPC-INGV 2008 - 2010 contract) | en |
| dc.language.iso | English | en |
| dc.publisher.name | Elsevier | en |
| dc.relation.ispartof | Tectonophysics | en |
| dc.relation.ispartofseries | /473(2009) | en |
| dc.subject | 2002-03 Mt. Etna eruption | en |
| dc.subject | Post-intrusive relaxation | en |
| dc.subject | Viscoelastic | en |
| dc.subject | After-slip | en |
| dc.subject | Rheology | en |
| dc.title | Time-dependent deformation of the eastern flank of Mt. Etna: after-slip or viscoelastic relaxation? | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | 300-311 | en |
| dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocks | en |
| dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring | en |
| dc.identifier.doi | 10.1016/j.tecto.2009.02.047 | en |
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Volcano-tectonic activity along structures of the unstable NE flank of Mt. Etna (Italy) and their possible origin. J. Volcanol. Geotherm. Res. 115, 277-302. Walter, T. R., Acocella V., Neri M., Amelung F., 2005. Feedback processes between magmatic events and flank movement at Mount Etna (Italy) during the 2002–2003 eruption. J. Geophys. Res. 110, B10205, doi:10.1029/2005JB003688. Wyatt, F. K., Agnew D. C., Gladwin M., 1994. Continuous measurements of crustal deformation for the 1992 Landers earthquake sequence. Bull. Seismol. Soc. Am. 84, 768–779. Yu, T.-T., Rundle J.B., Fernandez J., 1996. Surface deformation due to a strike-slip fault in an elastic gravitational layer overlying a viscoelastic gravitational half-space. J. Geophys. Res. 101, 3199-3214. | en |
| dc.description.obiettivoSpecifico | 1.3. TTC - Sorveglianza geodetica delle aree vulcaniche attive | en |
| dc.description.journalType | JCR Journal | en |
| dc.description.fulltext | reserved | en |
| dc.contributor.author | Palano, M. | en |
| dc.contributor.author | Gresta, S. | en |
| dc.contributor.author | Puglisi, G. | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
| dc.contributor.department | Università degli Studi di Catania, Dipartimento di Scienze Geologiche, Corso Italia 57, 95129 Catania, Italy | 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 | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
| crisitem.author.dept | Università di Catania | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
| crisitem.author.orcid | 0000-0001-7254-7855 | - |
| crisitem.author.orcid | 0000-0003-4503-5808 | - |
| 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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| 2009 - Palano et al - [ETNA relaxation] - TECTONOPHYSICS.pdf | Main Article | 2.59 MB | Adobe PDF |
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