Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/2417
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dc.contributor.authorallAntonioli, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallBelardinelli, M. E.; Settore di Geofisica, Dipartimento di Fisica, Universita` di Bologna, Bologna, Italy.en
dc.contributor.authorallBizzarri, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.authorallVogfjord, K. S.; Physics Department, Icelandic Meteorological Office, Reykjavik, Iceland.en
dc.date.accessioned2007-08-31T12:20:19Zen
dc.date.available2007-08-31T12:20:19Zen
dc.date.issued2006en
dc.identifier.urihttp://hdl.handle.net/2122/2417en
dc.description.abstractWe analyze the coseismic stress perturbation during the 17 June 2000 south Iceland seismic sequence; the main shock (Ms 6.6) was followed by three large events within a few tens of seconds (8, 26, and 30 s) located within 80 km. The aim of this paper is to investigate short-term fault interaction and instantaneous triggering. This happens when a fault perturbed by a stress change fails before the end of the transient stress perturbation. We compute the shear, normal, and Coulomb stress changes as functions of time in a stratified elastic half-space by using discrete wave number and reflectivity methods. We calculate dynamic stresses caused by the main shock at the hypocenters of these three subsequent events. Our numerical results show that the onset of the last two events is slightly delayed with respect to the arrival time of the second positive peak of Coulomb stress variation, while the first event occurred after the first positive stress peak. We have also analyzed the response of a spring slider system representing a fault governed by a rate- and state-dependent friction law, perturbed by shear and normal stress variations caused by the main shock. The fault response to the computed stress perturbations is always clock advanced. We have found suitable constitutive parameters of the modeled fault that allow the instantaneous dynamic triggering of these three earthquakes. If the initial sliding velocity is comparable with the tectonic loading velocity, we obtained failure times close to the observed origin times for low values of the initial effective normal stress.en
dc.language.isoEnglishen
dc.publisher.nameAguen
dc.relation.ispartofJ. Geophys. Res.en
dc.relation.ispartofseries/111 (2006)en
dc.subjectseismic sequenceen
dc.subjectIcelanden
dc.subject2000en
dc.titleEvidence of instantaneous dynamic triggering during the seismic sequence of year 2000 in south Icelanden
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumberB03302en
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.01. Earthquake faults: properties and evolutionen
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.02. Earthquake interactions and probabilityen
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamicsen
dc.identifier.doi10.1029/2005JB003935en
dc.description.journalTypeJCR Journalen
dc.description.fulltextreserveden
dc.contributor.authorAntonioli, A.en
dc.contributor.authorBelardinelli, M. E.en
dc.contributor.authorBizzarri, A.en
dc.contributor.authorVogfjord, K. S.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentSettore di Geofisica, Dipartimento di Fisica, Universita` di Bologna, Bologna, Italy.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.departmentPhysics Department, Icelandic Meteorological Office, Reykjavik, Iceland.en
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 ONT, Roma, Italia-
crisitem.author.deptUniversità di Bologna-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia-
crisitem.author.deptIcelandic meteorological center, physics departement-
crisitem.author.orcid0000-0002-7502-5662-
crisitem.author.orcid0000-0002-7653-5090-
crisitem.author.orcid0000-0001-8313-4124-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
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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