Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/1779
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dc.contributor.authorallAmato, A.; Istituto Nazionale di Geofisica, Roma, Italyen
dc.contributor.authorallAzzara, R.; Istituto Nazionale di Geofisica, Roma, Italyen
dc.contributor.authorallBasili, A.; Istituto Nazionale di Geofisica, Roma, Italyen
dc.contributor.authorallChiarabba, C.; Istituto Nazionale di Geofisica, Roma, Italyen
dc.contributor.authorallCocco, M.; Istituto Nazionale di Geofisica, Roma, Italyen
dc.contributor.authorallDi Bona, M.; Istituto Nazionale di Geofisica, Roma, Italyen
dc.contributor.authorallSelvaggi, G.; Istituto Nazionale di Geofisica, Roma, Italyen
dc.date.accessioned2006-09-29T10:25:04Zen
dc.date.available2006-09-29T10:25:04Zen
dc.date.issued1995-05en
dc.identifier.urihttp://hdl.handle.net/2122/1779en
dc.description.abstractn this paper we describe the location and the fault plane solution of the December 13, 1990, Eastern Sicily earthquake (ML = 5.4), and of its aftershock sequence. Because the main shock location is not well constrained due to the geometry of the permanent National Seismic Network in this area, we used a "master event" algorithm to locate it in relation to a well located aftershock. The revised location is slightly offshore Eastern Sicily, 4.8 km north of the largest aftershock (ML = 4.6) that occurred on December 16, 1990. The main shock has a strike-slip mechanism, indicating SE-NW compression with either left lateral motion on a NS plane, or right lateral on an EW plane. Two days after the main event we deployed a local network of eight digital stations, that provided accurate locations of the aftershocks, and the estimate of source parameters for the strongest earthquake. We observed an unusual quiescence after the ML = 5.4 event, that lasted until December 16, when a ML = 4.6 earthquake occurred. The fault plane solution of this aftershock shows normal faulting on E-W trending planes. Between December 16 and January 6, 1991, a sequence of at least 300 aftershock" was recorded by the local network. The well located earthquakes define a small source region of approximately 5 x 2 x 5 km3, with hypocentral depths ranging between 15 and 20 km. The paucity of large aftershocks, the time gap between the main shock occurrence and the beginning of the aftershock sequence (3.5 days), their different focal mechanisms (strike-slip vs. normal), and the different stress drop between main shock and after- shock suggest that the ML = 5.4 earthquake is an isolated event. The sequence of aftershocks began with the ML = 4.6 event, which is probably linked to the main shock with a complex mechanism of stress redistribution after the main faulting episode.en
dc.format.extent3816896 bytesen
dc.format.mimetypeapplication/pdfen
dc.language.isoEnglishen
dc.relation.ispartofseries2/38 (1995)en
dc.subjectseismicityen
dc.subjectfocal mechanismsen
dc.subjectlocal networksen
dc.subjectEastern Sicily earthquakeen
dc.titleMain shock and aftershocks of the December 13, 1990, Eastern Sicily earthquakeen
dc.typearticleen
dc.type.QualityControlPeer-revieweden
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.05. Historical seismologyen
dc.description.journalTypeJCR Journalen
dc.description.fulltextopenen
dc.contributor.authorAmato, A.en
dc.contributor.authorAzzara, R.en
dc.contributor.authorBasili, A.en
dc.contributor.authorChiarabba, C.en
dc.contributor.authorCocco, M.en
dc.contributor.authorDi Bona, M.en
dc.contributor.authorSelvaggi, G.en
dc.contributor.departmentIstituto Nazionale di Geofisica, Roma, Italyen
dc.contributor.departmentIstituto Nazionale di Geofisica, Roma, Italyen
dc.contributor.departmentIstituto Nazionale di Geofisica, Roma, Italyen
dc.contributor.departmentIstituto Nazionale di Geofisica, Roma, Italyen
dc.contributor.departmentIstituto Nazionale di Geofisica, Roma, Italyen
dc.contributor.departmentIstituto Nazionale di Geofisica, Roma, Italyen
dc.contributor.departmentIstituto Nazionale di Geofisica, Roma, Italyen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia-
crisitem.author.orcid0000-0002-9521-6570-
crisitem.author.orcid0000-0002-0345-9568-
crisitem.author.orcid0000-0001-6617-9419-
crisitem.author.orcid0000-0002-8111-3466-
crisitem.author.orcid0000-0001-6798-4225-
crisitem.author.orcid0000-0002-2273-326X-
crisitem.author.orcid0000-0001-7589-2937-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
Appears in Collections:Annals of Geophysics
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