Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5109
DC Field | Value | Language |
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dc.contributor.authorall | Bonforte, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Gambino, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Neri, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.date.accessioned | 2009-07-01T10:55:02Z | en |
dc.date.available | 2009-07-01T10:55:02Z | en |
dc.date.issued | 2009-06 | en |
dc.identifier.uri | http://hdl.handle.net/2122/5109 | en |
dc.description.abstract | The 2001 eruption represents one of the most studied events both from volcanological and geophysical point of view on Mt. Etna. This eruption was a crucial event in the recent dynamics of the volcano, marking the passage from a period (March 1993–June 2001) of moderate stability with slow, continuous flank sliding and contemporaneous summit eruptions, to a period (July 2001 to present) of dramatically increased flank deformations and flank eruptions. We show new GPS data and high precision relocation of seismicity in order to demonstrate the role of the 2001 intrusive phase in this change of the dynamic regime of the volcano. GPS data consist of two kinematic surveys carried out on 12 July, a few hours before the beginning of the seismic swarm, and on 17 July, just after the onset of eruptive activity. A picture of the spatial distribution of the sin-eruptive seismicity has been obtained using the HypoDD relocation algorithm based on the double-difference (DD) technique. Modeling of GPS measurements reveals a southward motion of the upper southern part of the volcano, driven by a NNW–SSE structure showing mainly left-lateral kinematics. Precise hypocenter location evidences an aseismic zone at about sea level, where the magma upraise was characterized by a much higher velocity and an abrupt westward shift, revealing the existence of a weakened or ductile zone. These results reveal how an intrusion of a dike can severely modify the shallow stress field, triggering significant flank failure. In 2001, the intrusion was driven by a weakened surface, which might correspond to a decollement plane of the portion of the volcano affected by flank instability, inducing an additional stress testified by GPS measurements and seismic data, which led to an acceleration of the sliding flanks. | en |
dc.description.sponsorship | This work was funded by the Istituto Nazionale di Geofisica e Vulcanologia and by the Dipartimento per la Protezione Civile (Italy). | en |
dc.language.iso | English | en |
dc.publisher.name | Elsevier | en |
dc.relation.ispartof | Tectonophysics | en |
dc.relation.ispartofseries | /471 (2009) | en |
dc.subject | stress release | en |
dc.subject | dike | en |
dc.subject | volcano-tectonics | en |
dc.subject | flank instability | en |
dc.subject | Mt. Etna | en |
dc.subject | instrumental monitoring | en |
dc.title | Intrusion of eccentric dikes: The case of the 2001 eruption and its role in the dynamics of Mt. Etna volcano | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 78–86 | en |
dc.identifier.URL | http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235830%232009%23995289998%231114062%23FLA%23&_cdi=5830&_pubType=J&_auth=y&_acct=C000067082&_version=1&_urlVersion=0&_userid=5381242&md5=69eefd7000145c04785a295e949172d4 | en |
dc.subject.INGV | 04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous | en |
dc.subject.INGV | 04. Solid Earth::04.01. Earth Interior::04.01.02. Geological and geophysical evidences of deep processes | en |
dc.subject.INGV | 04. Solid Earth::04.02. Exploration geophysics::04.02.99. General or miscellaneous | en |
dc.subject.INGV | 04. Solid Earth::04.03. Geodesy::04.03.99. General or miscellaneous | en |
dc.subject.INGV | 04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.09. Structural geology | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology | en |
dc.subject.INGV | 04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous | en |
dc.subject.INGV | 04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress | en |
dc.subject.INGV | 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.03. Magmas | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk | en |
dc.subject.INGV | 05. General::05.02. Data dissemination::05.02.99. General or miscellaneous | en |
dc.subject.INGV | 05. General::05.02. Data dissemination::05.02.02. Seismological data | en |
dc.subject.INGV | 05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions | en |
dc.identifier.doi | 10.1016/j.tecto.2008.09.028 | en |
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Catastrophic rockslide avalanche of May 18. In: Lipman, P.W., Mullineaux, D.R. (Eds.), The 1980 Eruptions of Mount St. Helens, Washington. Geol Surv Prof Pap, vol. 1250, pp. 347–377. Waldhauser, F., 2001. HypoDD: A computer program to compute double-difference earthquake locations. U.S. Geol. Surv. Open-File Report , 01-113.Menlo Park, California. Waldhauser, F., Ellsworth, W.L., 2000. A double-difference earthquake location algorithm: method and application to the northern Hayward fault. Bull. Seismol. Soc. Am. 90, 1353–1368. Walter, T.R., Acocella, V., Neri, M., Amelung, F., 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. | en |
dc.description.obiettivoSpecifico | 1.3. TTC - Sorveglianza geodetica delle aree vulcaniche attive | en |
dc.description.obiettivoSpecifico | 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive | en |
dc.description.obiettivoSpecifico | 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani | en |
dc.description.obiettivoSpecifico | 3.2. Tettonica attiva | en |
dc.description.obiettivoSpecifico | 3.6. Fisica del vulcanismo | en |
dc.description.obiettivoSpecifico | 4.3. TTC - Scenari di pericolosità vulcanica | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | Bonforte, A. | en |
dc.contributor.author | Gambino, S. | en |
dc.contributor.author | Neri, M. | 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.orcid | 0000-0003-0435-7763 | - |
crisitem.author.orcid | 0000-0001-8055-3059 | - |
crisitem.author.orcid | 0000-0002-5890-3398 | - |
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.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 05. General | - |
crisitem.classification.parent | 05. General | - |
crisitem.classification.parent | 05. General | - |
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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