Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/2290
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dc.contributor.authorallCocco, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallSpudich, P.; U.S.Geological Survey, Menlo Park, California, USAen
dc.contributor.authorallTinti, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.editorallAbercrombie, R.en
dc.contributor.editorallMcGarr, A.en
dc.contributor.editorallKanamori, H.en
dc.contributor.editorallDi Toro, G.en
dc.date.accessioned2007-07-03T11:59:34Zen
dc.date.available2007-07-03T11:59:34Zen
dc.date.issued2006-11en
dc.identifier.urihttp://hdl.handle.net/2122/2290en
dc.description.abstractIn this paper we attempt to reconcile a theoretical understanding of the earthquake energy balance with current geologic understanding of fault zones, with seismological estimates of fracture energy on faults, and with geological measurements of surface energy in fault gouges. In particular, we discuss the mechanical work absorbed on the fault plane during the propagation of a dynamic earthquake rupture. We show that, for realistic fault zone models, all the mechanical work is converted in frictional work defined as the irreversible work against frictional stresses. We note that the eff γ of Kostrov and Das (1988) is zero for cracks lacking stress singularities, and thus does not contribute to the work done on real faults. Fault shear tractions and slip velocities inferred seismologically are phenomenological variables at the macroscopic scale. We define the macroscopic frictional work and we discuss how it is partitioned into surface energy and heat (the latter includes real heat as well as plastic deformation and the radiation damping of Kostrov and Das). Tinti et al. (2005) defined and measured breakdown work for recent earthquakes, which is the excess of work over some minimum stress level associated with the dynamic fault weakening. The comparison between geologic measurements of surface energy and breakdown work revealed that 1-10% of breakdown work went into the creation of fresh fracture surfaces (surface energy) in large earthquakes, and the remainder went into heat. We also point out that in a realistic fault zone model the transition between heat and surface energy can lie anywhere below the slip weakening curve.en
dc.format.extent835154 bytesen
dc.format.mimetypeapplication/pdfen
dc.language.isoEnglishen
dc.publisher.nameAGUen
dc.relation.ispartofRadiated Energy and the Physics of Earthquakes Faulting,en
dc.subjectearthquakeen
dc.titleOn the mechanical work absorbed on faults during earthquake rupturesen
dc.typebook chapteren
dc.description.statusSubmitteden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber237-261en
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamicsen
dc.description.fulltextopenen
dc.contributor.authorCocco, M.en
dc.contributor.authorSpudich, P.en
dc.contributor.authorTinti, E.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentU.S.Geological Survey, Menlo Park, California, USAen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.editorAbercrombie, R.en
dc.contributor.editorMcGarr, A.en
dc.contributor.editorKanamori, H.en
dc.contributor.editorDi Toro, G.en
item.openairetypebook chapter-
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 Roma1, Roma, Italia-
crisitem.author.deptUSGS, Menlo Park, CA, USA-
crisitem.author.orcid0000-0001-6798-4225-
crisitem.author.orcid0000-0002-6942-3592-
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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