Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/8777
DC Field | Value | Language |
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dc.contributor.authorall | Bizzarri, A; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia | en |
dc.date.accessioned | 2013-10-18T12:25:49Z | en |
dc.date.available | 2013-10-18T12:25:49Z | en |
dc.date.issued | 2013-10 | en |
dc.identifier.uri | http://hdl.handle.net/2122/8777 | en |
dc.description.abstract | The energy flux F at the rupture tip has been previously computed only for 2D steady-state singular cracks. In this paper, I compute F for fully dynamic 3D ruptures, propagating both with constant and variable rupture speed (v_r) over finite faults directed by a governing law with a cohesive zone (and thus nonsingular ruptures). The results presented here indicate that F is positive and increasing over the whole range of v_r from zero up to P-wave speed. This is in contrast with 2D steady-state singular cracks, which predict the existence of a forbidden zone in the range of rupture speeds because in that interval F would be negative. Moreover, I found that in 3D ruptures with cohesive force, F is proportional to v_r, again in contrast to 2D steady-state singular cracks, in which F is not a unique function of v_r and also exhibits an inverse dependence on v_r. More specifically, it emerges that fast earthquakes tend to have a higher energy flux at the crack tip compared with slow ruptures. Finally, I show that the magnitude of F is basically due to its component aligned in the direction of the initial shear stress. | en |
dc.language.iso | English | en |
dc.publisher.name | Seismological Society of America | en |
dc.relation.ispartof | Bulletin of the Seismological Society of America | en |
dc.relation.ispartofseries | 5/103(2013) | en |
dc.subject | Coseismic ruptures | en |
dc.subject | Energy flux | en |
dc.title | Energy flux of propagating ruptures with cohesive force | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 2670-2679 | en |
dc.identifier.URL | http://www.bo.ingv.it/~bizzarri | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics | en |
dc.identifier.doi | 10.1016/j.epsl.2012.09.053 | en |
dc.description.obiettivoSpecifico | 3.1. Fisica dei terremoti | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | restricted | en |
dc.relation.issn | 0037-1106 | en |
dc.relation.eissn | 1943-3573 | en |
dc.contributor.author | Bizzarri, A | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia | 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 Bologna, Bologna, Italia | - |
crisitem.author.orcid | 0000-0001-8313-4124 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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P_039_Bizzarri_2013a.pdf | 3.03 MB | Adobe PDF |
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