Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/15457
DC Field | Value | Language |
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dc.date.accessioned | 2022-02-24T13:35:58Z | - |
dc.date.available | 2022-02-24T13:35:58Z | - |
dc.date.issued | 2021-01-20 | - |
dc.identifier.uri | http://hdl.handle.net/2122/15457 | - |
dc.description.abstract | New fault trace mapping and structural survey of the active faults outcropping within the epicentral area of the Campania-Lucania 1980 normal fault earthquake (Mw 6.9) are integrated with a revision of pre-existing earthquake data and with an updated interpretation of the CROP-04 near-vertical seismic profile to reconstruct the surface and depth geometry, the kinematics and stress tensor of the seismogenic fault pattern. Three main fault alignments, organized in high-angle en-echelon segments of several kilometers in length, are identified and characterized. The inner and intermediate ones, i.e. Inner Irpinia (InIF) and Irpinia Faults (IF), dip eastward; the outer Antithetic Fault (AFA) dips westward. Both the InIF and the IF strike NW-SE along the northern and central segments and rotate to W-E along the southern segments for at least 16 km. We provide evidence of surface coseismic faulting (up to 1 m) not recognized before along the E-W segments and document coseismic ruptures with maximum vertical displacement up to ∼1 m where already surveyed from other investigators 40 years ago. Fault/slip data from surface data and a new compilation of focal mechanisms (1980 – 2018) were used for strain and stress analyses to show a coherent NNE-directed least principal stress over time and at different crustal depths, with a crustal-scale deviation from the classic SW-NE tensional direction across the Apennines of Italy. The continuation at depth of the outcropping faults is analyzed along the trace of the CROP-04 profile and with available hypocentral distributions. Integrating all information, a 3D seismotectonic model, extrapolated to the base of the seismogenic layer, is built. It outlines a graben-like structure with a southern E-W bend developed at depth shallower than 10–12 km, at the hanging wall of an extensional NE- to E-dipping extensional basal detachment. In our interpretation, such a configuration implies a control in the stress transfer during the 1980 earthquake ruptures and provides a new interpretation of the second sub-event, occurred at 20 s. Our reconstruction suggests that the latter ruptured a hanging wall NNE-dipping splay of the E-W striking main fault segment and possibly also an antithetic SSW-dipping splay, in two in-sequence episodes. | en_US |
dc.language.iso | English | en_US |
dc.publisher.name | Frontiers Media S.A. | en_US |
dc.relation.ispartof | Frontiers in Earth Science | en_US |
dc.relation.ispartofseries | /8 (2021) | en_US |
dc.title | Fault Pattern and Seismotectonic Style of the Campania – Lucania 1980 Earthquake (Mw 6.9, Southern Italy): New Multidisciplinary Constraints | en_US |
dc.type | article | en |
dc.description.status | Published | en_US |
dc.type.QualityControl | Peer-reviewed | en_US |
dc.description.pagenumber | 608063 | en_US |
dc.subject.INGV | solid Earth | en_US |
dc.identifier.doi | 10.3389/feart.2020.608063 | en_US |
dc.description.obiettivoSpecifico | 4T. Sismicità dell'Italia | en_US |
dc.description.journalType | JCR Journal | en_US |
dc.contributor.author | Bello, S. | - |
dc.contributor.author | De Nardis, R. | - |
dc.contributor.author | Scarpa, Roberto | - |
dc.contributor.author | Brozzetti, F. | - |
dc.contributor.author | Cirillo, D. | - |
dc.contributor.author | Ferrarini, F. | - |
dc.contributor.author | Di Lieto, Bellina | - |
dc.contributor.author | Arrowsmith, Ramón J. | - |
dc.contributor.author | Lavecchia, G. | - |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia | en_US |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
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 Roma1, Roma, Italia | - |
crisitem.author.dept | Laboratorio di Geodinamica e Sismogenesi, Dipartimen- to di Scienze della Terra, Università «G. d’Annunzio» | - |
crisitem.author.dept | Università di Salerno, Dipartimento di Fisica "E.R. Caianiello", Salerno, Italy | - |
crisitem.author.dept | Dipartimento di Scienze della Terra, “G. d’Annunzio”Università | - |
crisitem.author.dept | Dipartimento di Scienze della Terra, “G. d’Annunzio”Università | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia | - |
crisitem.author.dept | Geodynamics and Seismogenesis Laboratory, Dipartimento di Scienze della Terra, Università “G. d'Annunzio” | - |
crisitem.author.orcid | 0000-0001-8093-3051 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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File | Description | Size | Format | |
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feart-08-608063.pdf | Open Access published article | 13.79 MB | Adobe PDF | View/Open |
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