Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/8169
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dc.contributor.authorallBizzarri, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia-
dc.date.accessioned2012-10-12T15:48:36Z-
dc.date.available2012-10-12T15:48:36Z-
dc.date.issued2012-01-09-
dc.identifier.urihttp://hdl.handle.net/2122/8169-
dc.description.abstractUnderstanding the behavior of natural faults at cosesimic slip velocities (v ~ 1–10 m/s or more) has become a challenging achievement for experimentalists and modelers of earthquake instabilities. The rate– and state–dependent friction laws, originally obtained in slow slip rate conditions, have been widely adopted in dynamic rupture models by assuming their validity well above the experimental range of observations. In this paper we consider a modification at high speeds, in which the steady state friction becomes independent on v above a transitional value vT . Our results show that this modification has dramatic effects on the dynamic propagation; as long as vT decreases the breakdown stress drop decreases, as well as the slip–weakening distance and the fracture energy density. Moreover, we found that the subshear regime is favored as vT decreases; we found that for the strength parameter S greater than 1.482 the supershear rupture propagation is inhibited. Finally, we demonstrate that the exponential weakening, often observed in laboratory experiments, can be theoretically explained in the framework of the rate and state laws.en_US
dc.language.isoengen_US
dc.publisher.nameElsevier Science Limiteden_US
dc.relation.ispartofEarth and planetary science lettersen_US
dc.relation.ispartofseries/335-336 (2012)en_US
dc.subjectRheology of faultsen_US
dc.titleFormulation of a fault governing law at high sliding speeds: Inferences from dynamic rupture modelsen_US
dc.typearticle-
dc.description.statusPublisheden_US
dc.type.QualityControlPeer-revieweden_US
dc.description.pagenumber223-230en_US
dc.identifier.URLhttp://www.bo.ingv.it/~bizzarrien_US
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamicsen_US
dc.identifier.doi10.1016/j.epsl.2012.09.007en_US
dc.description.obiettivoSpecifico2.3. TTC - Laboratori di chimica e fisica delle rocceen_US
dc.description.journalTypeJCR Journalen_US
dc.description.fulltextreserveden
dc.relation.issn0012-821Xen_US
dc.relation.eissn1385-013Xen_US
dc.contributor.authorBizzarri, A.-
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia-
item.grantfulltextrestricted-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
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