Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5275
DC Field | Value | Language |
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dc.contributor.authorall | Giampiccolo, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Tusa, G.; Dipartimento di Geologia e Geofisica, Università di Catania | en |
dc.contributor.authorall | Langer, H.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Gresta, S.; Dipartimento di Geologia e Geofisica, Università di Catania | en |
dc.date.accessioned | 2009-11-30T11:27:21Z | en |
dc.date.available | 2009-11-30T11:27:21Z | en |
dc.date.issued | 2002 | en |
dc.identifier.uri | http://hdl.handle.net/2122/5275 | en |
dc.description.abstract | The 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.iso | English | en |
dc.publisher.name | Kluver Academic Publishers | en |
dc.relation.ispartof | Journal of Seismology | en |
dc.relation.ispartofseries | / 6 (2002) | en |
dc.subject | attenuation | en |
dc.subject | Southeastern sicily | en |
dc.title | Attenuation in Southeastern Sicily (Italy) by applying different coda | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 487-501 | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | Giampiccolo, E. | en |
dc.contributor.author | Tusa, G. | en |
dc.contributor.author | Langer, H. | en |
dc.contributor.author | Gresta, S. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Dipartimento di Geologia e Geofisica, Università di Catania | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | Dipartimento di Geologia e Geofisica, Università di Catania | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
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 OE, Catania, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Università di Catania | - |
crisitem.author.orcid | 0000-0001-5203-7436 | - |
crisitem.author.orcid | 0000-0003-3656-3086 | - |
crisitem.author.orcid | 0000-0002-2508-8067 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.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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