Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/9021| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Alparone, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.contributor.authorall | Bonaccorso, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.contributor.authorall | Bonforte, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.contributor.authorall | Currenti, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
| dc.date.accessioned | 2014-06-13T12:05:50Z | en |
| dc.date.available | 2014-06-13T12:05:50Z | en |
| dc.date.issued | 2013-09 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/9021 | en |
| dc.description.abstract | We investigated the evolution of seismicity and deformation in the unstable eastern flank of Etna volcano over a 30 year period (from 1980 to 2012). A significant temporal correlation has been revealed between periods of flank acceleration and intensified seismic activity by comparing seismicity along the northern border (Pernicana fault system) of the sliding flank and the deformation of the eastern flank. Two marked phases have been observed in 1984-1986 and in the years following 2002. These two phases are separated by an intermediate phase from 1987 to 2001, in which the flank sliding slowed down and the seismicity dropped drastically. This common temporal evolution in the deformation rate and seismic release supports the hypothesis that the seismicity in the northern border can be viewed as a marker of the response to accommodate the stress exerted by the traction of the eastern flank sliding. This interplay has also been corroborated by finite element method numerical computations that highlight a good correlation between the seismicity pattern and areas of positive stress changes induced by the sliding surface. The two intense phases of flank acceleration are representative of two main different sources: volcano flank instability stretching the eastern sector in the first 1984-1986 phase and magmatic intrusions pushing the eastern flank seaward since the 2002-2003 eruption. Establishing the relationship between flank acceleration and seismic activation therefore contributes to understanding Etna's mechanical behavior and provides insights into the processes regulating the unstable flank response. | en |
| dc.language.iso | English | en |
| dc.publisher.name | American Geophysical Union | en |
| dc.relation.ispartof | Journal of geophysical research - solid earth | en |
| dc.relation.ispartofseries | /118(2013) | en |
| dc.subject | Pernicana | en |
| dc.subject | fault | en |
| dc.subject | volcano-tectonics | en |
| dc.subject | flank instability | en |
| dc.subject | seismicity and deformation | en |
| dc.subject | stress and strain | en |
| dc.title | Long-term stress-strain analysis of volcano flank instability: The eastern sector of Etna from 1980 to 2012 | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.description.pagenumber | 5098-5108 | en |
| dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.01. Earthquake faults: properties and evolution | en |
| dc.identifier.doi | 10.1002/jgrb.50364 | en |
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Elsworth (1997), Failure of volcanic slopes, Geotechnique, 47, 1, 1-31 Walter, T.R., V. Acocella, M. Neri, and F. Amelung (2005), Feedback processes between magmatism and E-flank movement at Mt. Etna (Italy) during the 2002–2003 eruption. J. Geophys. Res. 110, B10205. doi:10.1029/2005JB003688. Wiemer, S., and M. Wiss (2000), Minimum magnitude of completeness in earthquake catalogs: examples from Alaska, the western United States, and Japan, Bull. Seism. Soc. Am. 90, 859–869. Wiemer, S., and M. Wyss (2002), Mapping spatial variability of the frequency-magnitude distribution of earthquakes. ADV GEOPHYS, 45, 259-302. Wiemer, S. (2001), A software package to analyze seismicity: ZMAP, Seism. Res. Letts., 72, 373-382. | en |
| dc.description.obiettivoSpecifico | 1V. Storia e struttura dei sistemi vulcanici | en |
| dc.description.journalType | JCR Journal | en |
| dc.description.fulltext | restricted | en |
| dc.relation.issn | 0148-0227 | en |
| dc.contributor.author | Alparone, S. | en |
| dc.contributor.author | Bonaccorso, A. | en |
| dc.contributor.author | Bonforte, A. | en |
| dc.contributor.author | Currenti, G. | 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 (INGV), Sezione OE, Catania, 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 (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 | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, 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 OE, Catania, Italia | - |
| crisitem.author.orcid | 0000-0003-1161-1512 | - |
| crisitem.author.orcid | 0000-0002-4770-6006 | - |
| crisitem.author.orcid | 0000-0003-0435-7763 | - |
| crisitem.author.orcid | 0000-0001-8650-5613 | - |
| 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.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 | - |
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