Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/10964
DC Field | Value | Language |
---|---|---|
dc.date.accessioned | 2018-03-05T08:20:35Z | en |
dc.date.available | 2018-03-05T08:20:35Z | en |
dc.date.issued | 2015 | en |
dc.identifier.uri | http://hdl.handle.net/2122/10964 | en |
dc.description.abstract | Earthquakes occur because fault friction weakens with increasing slip and slip rates. Since the slipping zones of faults are often fluid-saturated, thermo-mechanical pressurization of pore fluids has been invoked as a mechanism responsible for frictional dynamic weakening, but experimental evidence is lacking. We performed friction experiments (normal stress 25 MPa, maximal slip-rate ~3 ms-1) on cohesive basalt and marble under (1) room-humidity and (2) immersed in liquid water (drained and undrained) conditions. In both rock types and independently of the presence of fluids, up to 80% of frictional weakening was measured in the first 5 cm of slip. Modest pressurization-related weakening appears only at later stages of slip. Thermo-mechanical pressurization weakening of cohesive rocks can be negligible during earthquakes due to the triggering of more efficient fault lubrication mechanisms (flash heating, frictional melting, etc.). © 2015 Elsevier B.V. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Earth and Planetary Science Letters | en |
dc.relation.ispartofseries | /429 (2015) | en |
dc.title | Thermo-mechanical pressurization of experimental faults in cohesive rocks during seismic slip | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 1-10 | en |
dc.identifier.doi | 10.1016/j.epsl.2015.07.054 | en |
dc.description.obiettivoSpecifico | 4T. Sismologia, geofisica e geologia per l'ingegneria sismica | en |
dc.description.obiettivoSpecifico | 2IT. Laboratori sperimentali e analitici | en |
dc.description.journalType | JCR Journal | en |
dc.contributor.author | Violay, M. | en |
dc.contributor.author | Di Toro, Giulio | en |
dc.contributor.author | Nielsen, S. | en |
dc.contributor.author | Spagnuolo, Elena | en |
dc.contributor.author | Burg, J. P. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, 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 | EPFL, LEMR, Lausanne, Switzerland | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.dept | Durham University, Durham, UK | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.dept | ETH, Zurich, Switzerland | - |
crisitem.author.orcid | 0000-0002-7402-8263 | - |
crisitem.author.orcid | 0000-0002-6618-3474 | - |
crisitem.author.orcid | 0000-0002-9214-2932 | - |
crisitem.author.orcid | 0000-0002-1377-5812 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
Violay(EPSL2015).pdf | 2.67 MB | Adobe PDF | ||
Violay_et_al_ manuscript_review-ANVUR.pdf | Open Access | 1.31 MB | Adobe PDF | View/Open |
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