Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/2127
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dc.contributor.authorallNeri, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italiaen
dc.contributor.authorallGuglielmino, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italiaen
dc.contributor.authorallRust, D.; Department of Geography and Earth Sciences, Brunel University; Uxbridge, UB8 3PH, U.K.en
dc.date.accessioned2007-06-01T13:04:18Zen
dc.date.available2007-06-01T13:04:18Zen
dc.date.issued2007-04-27en
dc.identifier.urihttp://hdl.handle.net/2122/2127en
dc.description.abstractUnderstanding Etnean flank instability is hampered by uncertainties over its western boundary. Accordingly, we combine soil radon emission, InSAR and EDM data to study the Ragalna fault system (RFS) on the SW flank of the volcano. Valuable synergy developed between our differing techniques, producing consistent results and serving as a model for other studies of partly obscured active faults. The RFS, limited in its surface expression, is revealed as a complex interlinked structure ~14 km long that extends from the edifice base towards the area of summit rifting, possibly linking north-eastwards to the Pernicana fault system (PFS) to define the unstable sector. Short-term deformation rates on the RFS from InSAR data reach ~7 mm a-1 in the satellite line of sight on the upslope segment and ~5 mm a-1 on the prominent central segment. While combining this with EDM data confirms the central segment of the RFS as a dextral transtensive structure, with strike-slip and dip-slip components of ~3.4 and ~3.7 mm a-1 respectively. We measured thoron (220Rn, half-life 56 secs) as well as radon and, probably because of its limited diffusion range, this appears a more sensitive but previously unexploited isotope for pinpointing active near-surface faults. Contrasting activity of the PFS and RFS reinforces proposals that the instability they bound is divided into at least three sub-sectors by intervening faults, while, in section, fault-associated basal detachments also form a nested pattern. Complex temporal and spatial movement interactions are expected between these structural components of the unstable sector.en
dc.format.extent2236005 bytesen
dc.format.extent978243 bytesen
dc.format.mimetypeapplication/pdfen
dc.format.mimetypeapplication/pdfen
dc.language.isoEnglishen
dc.publisher.nameAmerican Geophysical Unionen
dc.relation.ispartofJOURNAL OF GEOPHYSICAL RESEARCHen
dc.relation.ispartofseries/112 (2007)en
dc.subjectMultidisciplinary study; Ragalna fault system; radon and thoron; InSAR; EDM; volcano collapse modelsen
dc.titleFlank instability on Mount Etna: radon, radar interferometry and geodetic data from the south-western boundary of the unstable sectoren
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumberB04410en
dc.subject.INGV04. Solid Earth::04.04. Geology::04.04.09. Structural geologyen
dc.identifier.doi10.1029/2006JB004756en
dc.relation.referencesAbdoh, A. and M. Pilkington (1989), Radon emanation studies of the Ile Bizard Fault, Montreal. Geoexploration, 25, 341-354. Acocella, V. (2005), Modes of sector collapse of volcanic cones: insights from analogue experiments. J. Geoph. Res., 110, B02205, doi:10.1029/2004JB003166. Acocella, V., and M. Neri (2003), What makes flank eruptions? The 2001 Etna eruption and its possible triggering mechanisms. Bull. Volcanol. 65, 517-529. Acocella, V., and M. Neri (2005), Structural features of an active strike-slip fault on the sliding flank of Mt. Etna (Italy). J. Structural Geology, 27(2), 343-355, doi:10.1016/j.jsg.2004.07.006. Acocella, V., B. Behncke, M. Neri and S. D’Amico, S. (2003), Link between major flank slip and eruptions at Mt. Etna (Italy). J. Geophys. Res., 30, 2286, doi:10.1029/2003GL018642. Acocella V., M. Neri and P. Scarlato (2006), Shallow magma emplacement during the 2002-2003 Stromboli (Italy) eruption. Geophys. Res. Lett., 33, L17310, doi:10.1029/2006GL026862. Allard P., J. Carbonnelle, D. Dajlevic, J. Lebronec, P. Morel, M.C. Robe, J.M. Maurenas, R. Faivrepierret, D. Martin, J.C. Sabroux and P. Zettwoog (1991), Eruptive and diffuse emissions of CO2 from Mount Etna, Nature, 351, 387-391. Allard P., B. Behncke, S. D’Amico, M. Neri and S. Gambino (2006), Mount Etna 1993-2005: Anatomy of an Evolving Eruptive Cycle. Earth-Science Rev., 78, 85-114, doi:10.1016/j.earscirev.2006.04.002. Alparone S., B. Behncke, S. Giammanco, M. Neri and E. Privitera (2005), Paroxysmal summit activity at Mt. Etna monitored through continuous soil radon measurements. Geophys. Res. Lett., 32, L16307, doi:10.1029/2005GL023352. Aubert, M., and J.C. Baubron (1998), Identification of a hidden thermal fissure in a volcanic terrain using a combination of hydrothermal convection indicators and soil atmospheres analysis, J. Volcanol. Geotherm. Res., 35, 217–225. Azzaro, R. (2004), Seismicity and active tectonics in the Etna region: constraints for a seismotectonic model. In Etna Volcano Laboratory, Geophys. Monogr. Ser., vol. 143, edited by A. Bonaccorso et al., pp. 205-220, AGU, Washington, D.C. Baubron, J.C., P. Allard and J.P. Toutain (1990), Diffuse volcanic emissions of carbon dioxide from Vulcano Island, Italy, Nature, 344, 51–53, 1990. Baubron, J.C., P. Allard, J.C. Sabroux, D. Tedesco and J.P. Toutain (1991), Soil gas emanations as precursory indicators of volcanic eruption, J. Geol. Soc. London, 148, 571–576. Baubron, J.C., A. Rigo and J.P.Toutain (2002), Soil gas profiles as a tool to characterise active tectonic areas: the Jaut Pass example (Pyrenees, France). Earth and Plan. Sci. Letts. 196, 69-81. Behncke, B., and M. Neri (2003a), The July-August 2001 eruption of Mt. Etna (Sicily). Bull. Volcanol., 65, 461-476. doi: 10.1007/s00445-003-0274-1 Behncke, B., and M. Neri (2003b), Cycles and trends in the recent eruptive behaviour of Mount Etna (Italy), Can. J. Earth Sci., 40, 1405-1411, doi: 10.1139/E03-052. Behncke, B., M. Neri and R. Carniel (2003), An exceptional case of lava dome growth spawning pyroclastic avalanches at Mt. Etna (Italy): the 1999 Bocca Nuova eruption. J. Volcanol. Geotherm. Res., 124/1-2, 115-128. Behncke, B., M. Neri and A. Nagay (2005), Lava flow hazard at Mount Etna (Italy): New data from a GIS-based study, in Kinematics and dynamics of lava flows edited by M. Manga and G. Ventura, Spec. Pap. Geol. Soc. Am., 396-13, 187-205, doi: 710.1130/2005.2396(13). Behncke B., M. Neri, E. Pecora, V. Zanon (2006), The exceptional activity and growth of the Southeast Crater, Mount Etna (Italy), between 1996 and 2001. Bull. Volcanol., 69, 149-173, doi: 10.1007/s00445-006-0061-x. Billi, A., V. Acocella, R. Funiciello, G. Giordano, G. Lanzafame, M. Neri (2003), Mechanisms for ground-surface fracturing and incipient slope failure associated to the July-August 2001 eruption of Mt. Etna, Italy: analysis of ephemeral field data. J. Volcanol. Geotherm. Res., 122, 3-4, 281-294. Bonaccorso, A., O. Campisi, G. Falzone, S. Gambino (2004), Continuous tilt monitoring: a lesson from 20 years experience at Mt. Etna. In Etna Volcano Laboratory, Geophys. Monogr. Ser., vol. 143, edited by A. Bonaccorso et al., 143, pp. 307-320. Bonforte, A., and G. Puglisi (2003), Magma uprising and flank dynamics on Mount Etna volcano, studied using GPS data (1994–1995), J. Geophys. Res., 108 (B3), 2153, doi:10.1029/2002JB001845. Borgia, A., L. Ferrari and G. Pasquale (1992), Importance of gravitational spreading in the tectonic and volcanic evolution of Mount Etna. Nature, 357, 231-235. Borgia, A., P.T. Delaney, R.P. Denlinger (2000a), Spreading volcanoes. Ann. Rev. Earth Planet. Sci. 28, 539-570. Borgia, A., R. Lanari, E. Sansosti, M. Tesauro, P. Berardino, G. Fornaro, M. Neri and J.B. Murray (2000b), Actively growing anticlines beneath Catania from the distal motion of Mount Etna’s decollment measured by SAR interferometry and GPS. Geophys. Res. Letts., 27, 3409-3412. Bousquet, J.C., and G. Lanzafame (2001), Nouvelle interprétation des fractures des éruptions latérales de l’Etna: conséquences pour son cadre tectonique. Bull. Soc. Géol. Fr., 172, 455-467. Branca, S., M. Coltelli and G. Groppelli (2004), Geological Evolution of Etna Volcano. In Etna Volcano Laboratory, Geophys. Monogr. Ser., vol. 143, edited by A. Bonaccorso et al., pp. 49-63, AGU, Washington, D.C. Burton M., M. Neri and D. Condarelli (2004), High spatial resolution radon measurements reveal hidden active faults on Mt. Etna, Geophys. Res. Lett., 31(7), L07618, doi:10.1029/2003GL019181. Burton, M.R., M. Neri, D. Andronico, S. Branca, T. Caltabiano, S. Calvari, R.A. Corsaro, P. Del Carlo, G. Lanzafame, L. Lodato, L. Miraglia, G. Salerno and L. Spampinato (2005), Etna 2004-2005: An archetype for geodynamically-controlled effusive eruptions. Geophys. Res. Lett., 32, L09303, doi:10.1029/2005GL022527. Calvari, S., G. Groppelli and G. Pasquarè (1994), Preliminary geological data on the south-western walls of Valle del Bove, Mt. Etna (Sicily). Acta Vulcanol., 5,15-30. Calvari S., M. Neri and H. Pinkerton (2003), Effusion rate estimation during the 1999 summit eruption on Mt. Etna, and growth of two distinct lava flow fields. J. Volcanol. Geotherm. Res., 119/1-4, 107-123. Ciotoli, G., G. Etiope, M. Guerra, and S. Lombardi (1999), The detection of concealed faults in the Ofanto Basin using the correlation between soil-gas fracture surveys. Tectonyphysics, 301, 321-332. Coltelli, M., V.H. Garduno, M. Neri, G. Pasquarè and M. Pompilio (1994) Geology of northern wall of Valle del Bove, Etna (Sicily). Acta Vulcanol., 5, 55-68. Conner, C., B. Hill, P. LaFemina, M. Navarro and M. Conway (1996), Soil 222Rn pulse during the initial phase of the June-August 1995 eruption of Cerro Negro, Nicaragua, J. Volcan. Geotherm. Res., 73, 119-127. Corsaro, R., M. Neri and M. Pompilio (2002), Paleo-environmental and volcano-tectonic evolution of the south-eastern flank of Mt. Etna during the last 225 ka inferred from volcanic succession of the «Timpe», Acireale, Sicily. J. Volcanol. Geotherm. Res. 72, 1-19 Crenshaw, W.B., S.N. Williams and R.E. Stoiber (1982), Fault location by radon and mercury detection at an active volcano in Nicaragua, Nature, 300, 345–346. Dubois, C., A. Alvarez Calleja, S. Bassot and A. Chambaudet (1995), Modelling the 3-dimensional microfissure network in quartz in a thin section of granite. In Gas Geochemistry, edited by C. Dubois, Science Rev., pp. 357–368, Northwood. Falsaperla S., M. Neri, E. Pecora and S. Spampinato (2006), Multidisciplinary Study of Flank Instability Phenomena at Stromboli Volcano, Italy. Geophys. Res. Lett., 33, L09304, doi:10.1029/2006GL025940. Firth, C., I. Stewart, W.M. McGuire,S. Kershaw, C. Vita-Finzi (1996), Coastal elevation changes in eastern Sicily: implications for volcano instability at Mount Etna. In Volcano Instability on the Earth and Other Planets, edited by W.M. McGuire, A.P. Jones and J. Neuberg, Spec. Pub. Geol. Soc. London, 110, 153-167. Froger, J., O. Merle and P. Briole (2001), Active spreading and regional extension at Mount Etna imaged by SAR interferometry. Earth Planet. Sci. Letts., 187, 245-258. Harris, A. J. L. and M. Neri (2002), Volumetric observations during paroxysmal eruptions at Mount Etna: pressurized drainage of a shallow chamber or pulsed supply? J. Volcanol. Geotherm. Res., 116, 79-95. Heinicke, J., G. Martinelli and U. Koch (1992), Investigation of the connection between seismicity and CO2 - 222Rn content in spring water at the Vogtland area (Germany): first results. Abstract, XXIII General Assembly of the European Seismological Commission, Prague. Hirn, A., R. Nicolich, J. Gallart, M. Laigle, L. Cernobori (1997), Roots of Etna volcano in faults of great earthquakes. Earth Planet, Sci. Letts., 148, 171-191. Lanzafame, G., M. Neri and D. Rust (1996), Active tectonics affecting the eastern flank of Mount Etna: structural interactions at regional and local scale, In Etna: Fifteen years on, edited by P.H. Gravestock and W.J. McGuire, Cheltenham and Gloucester College of Higher Education, Centre for Volcanic Research, 25-33. Lanzafame, G., M. Neri, M. Coltelli, L. Lodato and D. Rust(1997a), North-South compression in the Mt. Etna region (Sicily): spatial and temporal distribution. Acta Vulcanol., 9, 121-133. Lanzafame, G., A. Leonardi, M. Neri and D. Rust (1997b), Late overthrust of the Appenine-Maghrebian Chain at the NE periphery of Mt. Etna, Italy. C.R. Acad. Sc. Paris, t. 324, serie IIa, 325-332. Lanzafame, G., M. Neri, V. Acocella, A. Billi, R. Funiciello and G. Giordano (2003), Structural features of the July-August 2001 Mount Etna eruption: evidence for a complex magmatic system. J. Geol. Soc. Lond. 160, 531-544. Lentini, F. (1982), The geology of the Mt. Etna basement. Mem. Soc. Geol. It., 23, 7-25. 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. Lundgren, P., P. Berardino, M. Coltelli, G. Fornaro, R. Lanari, G. Puglisi, E. Sansosti and M. Tesauro (2003), Coupled magma chamber inflation and sector collapse slip observed with synthetic aperture radar interferometry on Mt. Etna volcano. J. Geophys. Res. 108, doi: 10.1029/2001JB000657. Lundgren, P., F. Casu, M. Manzo, A. Pepe, P. Berardino, E. Sansosti, and R. Lanari (2004), Gravity and magma induced spreading of Mount Etna volcano revealed by satellite radar interferometry. Geophys. Res. Lett., 31, L04602, doi: 10.1029/003GL018736. Lundgren, P., and P. A. Rosen (2003), Source model for the 2001 flank eruption of Mt. Etna volcano, Geophys. Res. Lett., 30(7), 1388, doi:10.1029/2002GL016774. McGuire, W. J. (1996), Volcano instability: A review of contemporary themes. In Volcano Instability on the Earth and Other Planets, edited by W.M. McGuire, A.P. Jones and J. Neuberg, Spec. Pub. Geol. Soc. London, 110, 1-23. Massonnet, D., Briole, P., Arnaud, A., 1995. Deflation of Mount Etna monitored by spaceborne radar interferometry. Nature, 375, 567-570. Massonet, D. and K.L. Feigl (1998), Radar interferometry and its application to changes in the Earth's surface. Rev. Geophys., 36, 441-500. Merle, O., and A. Borgia (1996), Scaled experiments of volcanic spreading. J. Geophys. Res., 101, 13805-13817. Monaco, C., P. Tapponier, L. Tortorici, P.Y. Gillot (1997), Late Quaternary slip rates on the Acireale-Piedimonte normal faults and tectonic origin of Mt. Etna (Sicily). Earth Planet. Sci. Lett.,147, 125-139. Neri, M., and V. Acocella (2006), The 2004-05 Etna eruption: implications for flank deformation and structural behaviour of the volcano. J. Volcanol. Geotherm. Res., 158, 195-206, doi:10.1016/j.jvolgeores.2006.04.022, . Neri, M., V. Acocella and B. Behncke (2004), The role of the Pernicana fault system in the spreading of Mt. Etna (Italy) during the 2002-2003 eruption. Bull. Volcanol. 66, 417-430, doi: 10.1007/s00445-003-0322-x. Neri, M., V. Acocella, B. Behncke, V. Maiolino, A. Ursino and R. Velardita (2005), Contrasting triggering mechanisms of the 2001 and 2002-2003 eruptions of Mount Etna (Italy). J. Volcanol. and Geotherm. Res., 144, 235-255, doi: 10.1016/j.jvolgeores.2004.11.025. Neri M., B. Behncke, M. Burton, S. Giammanco, E. Pecora, E. Privitera, D. Reitano, (2006), Continuous soil radon monitoring during the July 2006 Etna eruption. Geophys. Res. Lett., 33, L24316, doi:10.1029/2006GL028394. Neri, M., V.H. Garduño, G. Pasquarè and R. Rasà (1991), Studio strutturale e modello cinematico della Valle del Bove e del settore nord-orientale etneo. Acta Vulcanol., 1, 17-24. Puglisi G. and A. Bonforte (2004), Dynamics of Mount Etna Volcano inferred from static and kinematic GPS measurements, J. Geophys. Res., 109, B11, B11404, doi:10.1029/2003JB002878. Rasà, A., R. Romano and L. Lo Giudice (1982), Morphotectonic map of Mt. Etna, In Mount Etna Volcano, edited by R. Romano, Mem. Soc. Geol. It., 23. Romano, R. (1979), Geological Map of Mt. Etna. CNR, Prog. Fin. Geodinamica, Istituto Internazionale di Vulcanologia, Catania, 1:50000 scale. Romano, R. (1982), Succession of the volcanic activity in the Etnean area. Mem. Soc. Geol. It., 23, 27-48. Rust, D., and M. Neri (1996), The boundaries of large-scale collapse on the flanks of Mount Etna, Sicily, In Volcano Instability on the Earth and Other Planets, edited by W.M. McGuire, A.P. Jones and J. Neuberg, Spec. Pub. Geol. Soc. London, 110, 193-208. Rust, D., B. Behncke, M. Neri and A. Ciocanel (2005), Nested zones of instability in the Mount Etna volcanic edifice, Sicily. J. Volcanol. and Geotherm. Res., 155, 137-153, doi: 10.1016/j.jvolgeores.2004.11.021. Rust, D., and S. Kershaw (2000), Holocene tectonic uplift patterns in northeastern Sicily: evidence from marine notches in coastal outcrops. Marine Geology, 167, 105-126. Siebert, L. (1984) Large volcanic debris avalanches: Characteristics of source areas, deposits and associated eruptions. J. Volcanol. Geotherm. Res., 22, 163-197. Shapiro, M.H., J.D. Melvin, T.A. Tombrello, J. Fong-Liang, L. Gui-Ru, M.H. Mendenhall, and A. Rice, (1982), Correlated radon and CO2 variations near the San-Andreas fault, Geophys. Res. Lett., 9, 503–506. Tanner, A. B. (1964) Radon migration in the ground: a review, In Natural Radiation Environment, edited by J.A.S. Adams W.M. Lowder, Univ. Chicago Press, pp.161-190, Chicago. Tansi, C., A. Tallarico,G. Iovine, M. Folino-Gallo and G. Falcone (2005), Interpretation of radon anomalies in seismotectonic and tectonic-gravitational settings: the south-eastern Crati graben (Northern Calabria, Italy), Tectonophysics, 396, 181-193. Tibaldi, A. (2001), Multiple sector collapses at Stromboli volcano, Italy: how they work, Bull. Volcanol., 63, 112-125. 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. Toutain, J.P., J.C. Baubron, J. Le Bronec, P. Allard, P. Briole, B. Marty, G. Miele, D. Tedesco and G. Luongo (1992), Continuous monitoring of distal gas emanations at Vulcano, southern Italy, Bull. Volcanol., 54, 147–155. Toutain, J.P. and J.C. Baubron (1999), Gas geochemistry and seismotectonics: a review, Tectonophysics, 304, 1–27. Voight, B. and D. Elsworth (1997), Failure of volcano slopes. Geotechnique, 47, 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.en
dc.description.journalTypeJCR Journalen
dc.description.fulltextpartially_openen
dc.contributor.authorNeri, M.en
dc.contributor.authorGuglielmino, F.en
dc.contributor.authorRust, D.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italiaen
dc.contributor.departmentDepartment of Geography and Earth Sciences, Brunel University; Uxbridge, UB8 3PH, U.K.en
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.deptDepartment of Geography and Earth Sciences, Brunel University, Uxbridge, Middx UB8 3PH, UK-
crisitem.author.orcid0000-0002-5890-3398-
crisitem.author.orcid0000-0003-3258-9975-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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