Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/10979
DC FieldValueLanguage
dc.date.accessioned2018-03-05T13:43:05Zen
dc.date.available2018-03-05T13:43:05Zen
dc.date.issued2016-04-16en
dc.identifier.urihttp://hdl.handle.net/2122/10979en
dc.description.abstractEmpirically based rate-and-state friction laws (RSFLs) have been proposed to model the dependence of friction forces with slip and time. The relevance of the RSFL for earthquake mechanics is that few constitutive parameters define critical conditions for fault stability (i.e., critical stiffness and frictional fault behavior). However, the RSFLs were determined from experiments conducted at subseismic slip rates (V < 1 cm/s), and their extrapolation to earthquake deformation conditions (V > 0.1 m/s) remains questionable on the basis of the experimental evidence of (1) large dynamic weakening and (2) activation of particular fault lubrication processes at seismic slip rates. Here we propose a modified RSFL (MFL) based on the review of a large published and unpublished data set of rock friction experiments performed with different testing machines. The MFL, valid at steady state conditions from subseismic to seismic slip rates (0.1 µm/s < V < 3 m/s), describes the initiation of a substantial velocity weakening in the 1-20 cm/s range resulting in a critical stiffness increase that creates a peak of potential instability in that velocity regime. The MFL leads to a new definition of fault frictional stability with implications for slip event styles and relevance for models of seismic rupture nucleation, propagation, and arrest.en
dc.language.isoEnglishen
dc.relation.ispartofGeophysical research lettersen
dc.relation.ispartofseries/43 (2016)en
dc.titleAn empirically based steady state friction law and implications for fault stabilityen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber3263 – 3271en
dc.identifier.doi10.1002/2016GL067881en
dc.description.obiettivoSpecifico4T. Sismologia, geofisica e geologia per l'ingegneria sismicaen
dc.description.obiettivoSpecifico2IT. Laboratori sperimentali e analiticien
dc.description.journalTypeJCR Journalen
dc.contributor.authorSpagnuolo, Elenaen
dc.contributor.authorNielsen, S.en
dc.contributor.authorViolay, M.en
dc.contributor.authorDi Toro, Giulioen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italiaen
dc.contributor.departmentDepartment of Earth Sciences, University of Durham, Durham, United Kingdomen
dc.contributor.departmentLEMR, ENAC, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerlanden
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italiaen
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 Roma1, Roma, Italia-
crisitem.author.deptDurham University, Durham, UK-
crisitem.author.deptEPFL, LEMR, Lausanne, Switzerland-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.orcid0000-0002-1377-5812-
crisitem.author.orcid0000-0002-9214-2932-
crisitem.author.orcid0000-0002-7402-8263-
crisitem.author.orcid0000-0002-6618-3474-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
Appears in Collections:Article published / in press
Files in This Item:
File Description SizeFormat
Spagnuolo_et_al-2016-Geophysical_Research_Letters.pdf723.27 kBAdobe PDFView/Open
Show simple item record

WEB OF SCIENCETM
Citations 5

18
checked on Feb 10, 2021

Page view(s)

113
checked on Mar 27, 2024

Download(s)

33
checked on Mar 27, 2024

Google ScholarTM

Check

Altmetric