Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/5275
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dc.contributor.authorallGiampiccolo, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italiaen
dc.contributor.authorallTusa, G.; Dipartimento di Geologia e Geofisica, Università di Cataniaen
dc.contributor.authorallLanger, H.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italiaen
dc.contributor.authorallGresta, S.; Dipartimento di Geologia e Geofisica, Università di Cataniaen
dc.date.accessioned2009-11-30T11:27:21Zen
dc.date.available2009-11-30T11:27:21Zen
dc.date.issued2002en
dc.identifier.urihttp://hdl.handle.net/2122/5275en
dc.description.abstractThe attenuation in Southeastern Sicily has been investigated using 40 aftershocks of the December 13 1990, earthquake. The quality factor of coda waves (Qc) was estimated in the frequency range 1.5–24 Hz, applying three different methods in time and frequency domains. On the whole, a clear dependence of Qc on frequency was observed, according to the general law Q = Q0(f/f0) n . The frequency dependence relationships obtained from the analysis of coda waves at three lapse time windows (10, 20 and 30 seconds) show that, for all methods, Q0 (Qc at 1 Hz) significantly increases with lapse time. In particular, Q0 is approximately 20 at short lapse time (10 s) and increases to about 70 at longer lapse time (30 s). This is attributed to the fact that larger lapse times involve deeper parts of the crust and upper lithosphere which may be characterized by larger quality factors. Moreover, the value of the exponent n decreases with increasing coda lengths from about 1.3 to 0.9, suggesting a decrease in heterogeneity of the medium with depth. Finally, Qc-values here found are of the same order as those reported from other tectonic regions like the Anatolian Highlands or Southern Spain, while significantly higher than in the neighboring volcanic area of Mt. Etna.en
dc.language.isoEnglishen
dc.publisher.nameKluver Academic Publishersen
dc.relation.ispartofJournal of Seismologyen
dc.relation.ispartofseries/ 6 (2002)en
dc.subjectattenuationen
dc.subjectSoutheastern sicilyen
dc.titleAttenuation in Southeastern Sicily (Italy) by applying different codaen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber487-501en
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamicsen
dc.description.journalTypeJCR Journalen
dc.description.fulltextreserveden
dc.contributor.authorGiampiccolo, E.en
dc.contributor.authorTusa, G.en
dc.contributor.authorLanger, H.en
dc.contributor.authorGresta, S.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italiaen
dc.contributor.departmentDipartimento di Geologia e Geofisica, Università di Cataniaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italiaen
dc.contributor.departmentDipartimento di Geologia e Geofisica, Università di Cataniaen
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.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.deptUniversità di Catania-
crisitem.author.orcid0000-0001-5203-7436-
crisitem.author.orcid0000-0003-3656-3086-
crisitem.author.orcid0000-0002-2508-8067-
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-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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