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dc.contributor.author
Dorostkar, Omid
dc.contributor.author
Carmeliet, Jan
dc.date.accessioned
2022-03-22T10:13:24Z
dc.date.available
2019-09-05T03:21:27Z
dc.date.available
2019-09-05T11:11:28Z
dc.date.available
2022-03-22T10:13:24Z
dc.date.issued
2019-07
dc.identifier.issn
2169-9313
dc.identifier.issn
0148-0227
dc.identifier.issn
2169-9356
dc.identifier.other
10.1029/2019JB017374
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/362540
dc.description.abstract
Mature faults at their core contain granular gouge, created due to communition of host rocks, which its frictional behavior controls earthquake nucleation and rupture patterns. In this work, we consider a fault system with granular gouge to study the effect of grain friction on the characteristics of seismic cycles. Our results show that particle friction controls the evolution of fault frictional strength as well as accumulation and release of elastic strain energy. Our discrete element simulations show that the stick-slip frictional strength and dilation of the fault, as well as their variations, nonlinearly increase with the particle friction, but at high particle friction saturate. By statistical analyses on a large number of slip events, we find that the average recurrence time and its variations decrease with particle friction. A fault with higher grain friction shows more small slip events and also contains a limited number of extreme events. High particle friction introduces a more complex nucleation phase with higher stored energy and many recurrent small failures. We analyze the pseudo acoustic emission, which is based on monitoring the velocity signal of particles, and find higher temporal and more spatially distributed pseudo acoustic emissions for fault with higher grain friction. Our findings in this study show that, in faults with granular gouge, where the fault zone walls are totally engaged to the gouge layer, the friction at grain-scale controls the characteristics of stick-slip cycles including timing and amount of energy release.
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.subject
friction
en_US
dc.subject
stick slip
en_US
dc.subject
granular physics
en_US
dc.subject
fault gouge
en_US
dc.subject
fault mechanics
en_US
dc.subject
micromechanics
en_US
dc.title
Grain Friction Controls Characteristics of Seismic Cycle in Faults With Granular Gouge
en_US
dc.type
Journal Article
dc.date.published
2019-06-26
ethz.journal.title
Journal of Geophysical Research: Solid Earth
ethz.journal.volume
124
en_US
ethz.journal.issue
7
en_US
ethz.journal.abbreviated
J. geophys. res. Solid earth
ethz.pages.start
6475
en_US
ethz.pages.end
6489
en_US
ethz.identifier.wos
ethz.publication.place
Hoboken, NJ
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02130 - Dep. Maschinenbau und Verfahrenstechnik / Dep. of Mechanical and Process Eng.::03806 - Carmeliet, Jan / Carmeliet, Jan
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02130 - Dep. Maschinenbau und Verfahrenstechnik / Dep. of Mechanical and Process Eng.::03806 - Carmeliet, Jan / Carmeliet, Jan
ethz.relation.isSupplementedBy
10.3929/ethz-b-000335056
ethz.date.deposited
2019-09-05T03:21:30Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2019-09-05T11:11:42Z
ethz.rosetta.lastUpdated
2022-03-29T20:43:28Z
ethz.rosetta.versionExported
true
ethz.COinS
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