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Cadoppi, Paola
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- PublicationRestrictedSeismotectonic investigations in the inner Cottian Alps (Italian Western Alps):(2010)
; ; ; ; ; ; ; ;Perrone, G.; Dipartimento di Scienze della Terra, Università di Torino ;Eva, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia ;Solarino, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia ;Cadoppi, P.; Dipartimento di Scienze della Terra, Università di Torino; CNR IGG; NATRISK Centro Interdipartimentale sui Rischi Naturali in Ambiente Montano e Collinare, Università di Torino ;Balestro, G.; Dipartimento di Scienze della Terra, Università di Torino; NATRISK, Centro Interdipartimentale sui Rischi Naturali in Ambiente Montano e Collinare, Università di Torino ;Fioraso, G.; NATRISK, Centro Interdipartimentale sui Rischi Naturali in Ambiente Montano e Collinare, Università di Torino ;Tallone, S.; NATRISK, Centro Interdipartimentale sui Rischi Naturali in Ambiente Montano e Collinare, Università di Torino; ; ; ; ; ; This work integrates the results of recent geological–structural studies with new seismological data for the inner Cottian Alps to investigate the connection between faults and seismicity. The major post-metamorphic tectonic feature of this sector is represented by a N–S structure, named Lis–Trana Deformation Zone (LTZ). Since the Late Oligocene, this structure accommodated right-lateral (Late Oligocene–Early Miocene) and subsequently normal (post-Early Miocene) displacements. In the Pleistocene, the activity of the LTZ seems to have caused the development of lacustrine basins inside the valleys that drain this sector of Western Alps. The present-day seismicity joins the northern part of the LTZ and, southwards, other minor sub-parallel structures. In transversal cross-section hypocentres highlight steep surfaces. Focal mechanisms calculated along this structure show both extensional and strike–slip solutions, mostly with one roughly N–S striking nodal plane. Both sub-horizontal (with NE–SW to ENE–WSW trend) and steeply dipping P axes with N–S to NW–SE sub-horizontal T axes are observed. Even if clear evidence of Quaternary tectonic activity in the area is missing, on the basis of the available seismological and geological data we propose that in the inner Northern Cottian Alps the present-day seismic activity may be connected to the LTZ, interpreted as minor sub-parallel fault strand of the Canavese Line. The kinematics of this structure is consistent with the focal mechanisms calculated in this area. Structural and seismological data indicate that LTZ is active under a bulk dextral–transtensive regime since the late Oligocene in the inner Cottian Alps, in agreement with the data published for the adjacent domain of the chain.189 19 - PublicationOpen AccessRelations between faults and seismicity in the Cottian Alps (Central-Western Alps) by an integrated approach between structural analysis, morphotectonics and seismic data(2007-09-25)
; ; ; ; ; ;Perrone, G.; Univ. di Torino, Italy ;Cadoppi, P.; Univ. di Torino, Italy ;Eva, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia ;Giardino, M.; Univ. di Torino, Italy ;Tallone, S.; CNR, Torino, Italy; ; ; ; ; ; ; ;Vinciguerra, Sergio; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Bernabé, Yves; MIT, USA; see Abstract Volume116 189 - PublicationOpen AccessInstrumental seismicity gives insights on the historical earthquakes of the Pinerolo area(2010)
; ; ; ; ;Eva, Elena; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia ;Solarino, Stefano; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia ;Perrone, Gianluigi; Dipartimento Scienze della Terra, Università di Torino ;Cadoppi, Paola; Dipartimento Scienze della Terra, Università di Torino; ; ; The area around Pinerolo has been struck, between 1300 and 1900, by some earthquakes of magnitude ranging from 4.5 to 5.5. The more recent seismicity is instead of low to moderate magnitude. The adoption of a precise location algorithm, the knowledge of a detailed field geological mapping and especially their coupling can concur to better constrain the structures likely responsible for seismic events and, in turn, to give information on their depth, geometry and source mechanisms. These information can partly be extended, under certain circumstances, to historical events.185 109 - PublicationRestrictedSeismotectonics of a low-deformation area: the central Western Alps (Italy)(2011)
; ; ; ; ; ;Perrone, G.; Dipartimento di Scienze della Terra, Università di Torino, Italy ;Eva, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia ;Cadoppi, P.; Dipartimento di Scienze della Terra, Università di Torino, Italy; CNR-IGG, Unità operativa di Torino, Italy; Centro NATRISK, Università di Torino, Italy ;Solarino, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia ;Fioraso, G.; CNR-IGG, Unità operativa di Torino, Italy; ; ; ; This work is based on the integration of detailed field mapping, structural analysis and updated seismological data for the central Western Alps. In this area, three regional, steeply-dipping fault systems seem to be connected to the current seismic activity: the Longitudinal Faults, in the western part, the Transverse Faults, in the central part, and the Col del Lis-Trana Deformation Zone, in the eastern part. Structural and seismological data suggest that since the Late Oligocene, a dextral transtensive regime has been active in this area. The Canavese Line seems to represent the structure that decouples this stress regime, acting inside this sector of the chain, from the transpressive regime that characterizes the adjacent westernmost Po Plain. At a regional scale, this transtensive regime is induced by the coexistence of two driving forces: the counterclockwise rotation of the Adria plate and the body forces acting inside the chain. These two different forces, induced respectively, the dextral and normal components of movement along the major faults bounding the Western Alps. The data fit in a model of dextral transcurrence at the scale of the Western Alps. The data presented in this work contribute to an updated seismic macrozonation of the western Alpine chain, a very populated area where, up to now, only marginal seismotectonic studies have been carried out.384 31