Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/6105
DC Field | Value | Language |
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dc.contributor.authorall | Ruch, J.; Dipartimento di Scienze Geologiche, Università Roma Tre, Rome, Italy | en |
dc.contributor.authorall | Acocella, V.; Dipartimento di Scienze Geologiche, Università Roma Tre, Rome, Italy | en |
dc.contributor.authorall | Storti, F.; Dipartimento di Scienze Geologiche, Università Roma Tre, Rome, Italy | en |
dc.contributor.authorall | Neri, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Pepe, S.; IREA, Consiglio Nazionale delle Ricerche, Naples, Italy | en |
dc.contributor.authorall | Solaro, G.; IREA, Consiglio Nazionale delle Ricerche, Naples, Italy | en |
dc.contributor.authorall | Sansosti, E.; IREA, Consiglio Nazionale delle Ricerche, Naples, Italy | en |
dc.date.accessioned | 2010-09-07T13:57:54Z | en |
dc.date.available | 2010-09-07T13:57:54Z | en |
dc.date.issued | 2010-08-21 | en |
dc.identifier.uri | http://hdl.handle.net/2122/6105 | en |
dc.description.abstract | Flank instability is common at volcanoes, even though the subsurface structures, including the depth to a detachment fault, remain poorly constrained. Here, we use a multidisciplinary approach, applicable to most volcanoes, to evaluate the detachment depth of the unstable NE flank of Mt. Etna. InSAR observations of Mount Etna during 1995–2008 show a trapdoor subsidence of the upper NE flank, with a maximum deformation against the NE Rift. The trapdoor tilt was highest in magnitude in 2002–2004, contemporaneous with the maximum rates of eastward slip along the east flank. We explain this deformation as due to a general eastward displacement of the flank, activating a rotational detachment and forming a rollover anticline, the head of which is against the NE Rift. Established 2D rollover construction models, constrained by morphological and structural data, suggest that the east‐dipping detachment below the upper NE flank lies at around 4 km below the surface. This depth is consistent with seismicity that clusters above 2–3 km below sea level. Therefore, the episodically unstable NE flank lies above an east‐dipping rotational detachment confined by the NE Rift and Pernicana Fault. Our approach, which combines short‐term (InSAR) and long‐term (geological) observations, constrains the 3D geometry and kinematics of part of the unstable flank of Etna and may be applicable and effective to understand the deeper structure of volcanoes undergoing flank instability or unrest. | en |
dc.description.sponsorship | This work was partially funded by INGV and the DPC‐INGV project “Flank”, and partially by the ASI (SRV project). | en |
dc.language.iso | English | en |
dc.publisher.name | American Geophysical Union | en |
dc.relation.ispartof | Geophysical research letters | en |
dc.relation.ispartofseries | /37(2010) | en |
dc.subject | flank instability | en |
dc.subject | fault | en |
dc.subject | InSAR | en |
dc.subject | Etna | en |
dc.subject | rollover | en |
dc.title | Detachment depth revealed by rollover deformation: An integrated approach at Mount Etna | en |
dc.title.alternative | DETACHMENT DEPTH OF AN UNSTABLE VOLCANO | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | L16304 | en |
dc.identifier.URL | http://www.agu.org/pubs/crossref/2010/2010GL044131.shtml | en |
dc.subject.INGV | 04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous | en |
dc.subject.INGV | 04. Solid Earth::04.02. 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::04.03.06. Measurements and monitoring | 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::04.04.06. Rheology, friction, and structure of fault zones | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.09. Structural geology | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.11. Instruments and techniques | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous | 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::04.07.02. Geodynamics | 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::04.08.06. Volcano monitoring | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk | en |
dc.subject.INGV | 05. General::05.08. Risk::05.08.99. General or miscellaneous | en |
dc.identifier.doi | 10.1029/2010GL044131 | en |
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(1991), Geometric models of listric normal faults and rollover folds, AAPG Bull., 75(10), 1609–1625. Garduño, V. H., M. Neri, G. Pasquarè, A. Borgia, and A. Ribaldi (1997), Geology of the NE‐Rift of Mount Etna (Sicily, Italy), Acta Vulcanol., 9(1–2), 91–100. Groppelli, G., and A. Tibaldi (1998), Control of rock rheology on deformation style and slip‐rate along the active Pernicana Fault, Mt. Etna, Italy, Tectonophysics, 304, 521–537. Lo Giudice, E., and R. Rasà (1992), Very shallow earthquakes and brittle deformation in active volcanic areas: The Etnean region as an example, Tectonophysics, 202, 257–268, doi:10.1016/0040-1951(92)90111-I. Mauduit, T., and J. P. Brun (1998), Growth fault/rollover systems: Birth, growth, and decay, J. Geophys. Res., 103, 18,119–18,136, doi:10.1029/97JB02484. McClay, K. R., and A. D. Scott (1991), Experimental models of hangingwall deformation in ramp‐flat listric extensional fault systems, Tectonophysics, 188, 85–96, doi:10.1016/0040-1951(91)90316-K. 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Sansosti (2010), Anatomy of an unstable volcano from InSAR: Multiple processes affecting flank instability at Mt. Etna, 1994–2008, J. Geophys. Res., doi:10.1029/ 2009JB000820, in press. Tibaldi, A., and G. Groppelli (2002), 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, doi:10.1016/S0377-0273 (01)00305-5. van Wyk de Vries, B., and P. W. Francis (1997), Catastrophic collapse at stratovolcanoes induced by slow volcano spreading, Nature, 387, 387–390, doi:10.1038/387387a0. Voight, B., and D. Elsworth (1997), Failure of volcano slopes, Geotechnique, 47(1), 1–31, doi:10.1680/geot.1997.47.1.1. Watters, R. J., D. R. Zimbelman, S. D. Bowman, and J. K. Krowley (2000), Rock mass strength assessment and significance to edifice stability, Mount Rainier and Mount Hood, Cascade Range volcanoes, Pure Appl. Geophys., 157, 957–976, doi:10.1007/s000240050012. White, N. J., J. A. Jackson, and D. P. McKenzie (1986), The relationship between the geometry of normal fault and that of sedimentary layers in their hanging walls, J. Struct. Geol., 8, 897–909, doi:10.1016/0191- 8141(86)90035-0. Xiao, H., and J. Suppe (1992), Origin of rollover, AAPG Bull., 76(4), 509–529. | en |
dc.description.obiettivoSpecifico | 1.3. TTC - Sorveglianza geodetica delle aree vulcaniche attive | en |
dc.description.obiettivoSpecifico | 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani | en |
dc.description.obiettivoSpecifico | 1.10. TTC - Telerilevamento | en |
dc.description.obiettivoSpecifico | 3.2. Tettonica attiva | 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 | Ruch, J. | en |
dc.contributor.author | Acocella, V. | en |
dc.contributor.author | Storti, F. | en |
dc.contributor.author | Neri, M. | en |
dc.contributor.author | Pepe, S. | en |
dc.contributor.author | Solaro, G. | en |
dc.contributor.author | Sansosti, E. | en |
dc.contributor.department | Dipartimento di Scienze Geologiche, Università Roma Tre, Rome, Italy | en |
dc.contributor.department | Dipartimento di Scienze Geologiche, Università Roma Tre, Rome, Italy | en |
dc.contributor.department | Dipartimento di Scienze Geologiche, Università Roma Tre, Rome, Italy | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | IREA, Consiglio Nazionale delle Ricerche, Naples, Italy | en |
dc.contributor.department | IREA, Consiglio Nazionale delle Ricerche, Naples, Italy | en |
dc.contributor.department | IREA, Consiglio Nazionale delle Ricerche, Naples, Italy | 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 | Dipartimento Scienze Geologiche, Università Roma Tre, Roma, Italy | - |
crisitem.author.dept | Università Roma Tre, Dipartimento di Scienze Geologiche, Rome, Italy | - |
crisitem.author.dept | Dipartimento di Scienze Geologiche, Universita` 'Roma Tre', Rome, Italy | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | CNR-IREA | - |
crisitem.author.dept | IREA-CNR, Naples, Italy. | - |
crisitem.author.dept | CNR-IREA | - |
crisitem.author.orcid | 0000-0002-5890-3398 | - |
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 | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 05. General | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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