Title | Two slip regimes in sheared granular fault |
Author | |
Corresponding Author | Gao,Ke |
Publication Years | 2023-04-15
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DOI | |
Source Title | |
ISSN | 0012-821X
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EISSN | 1385-013X
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Volume | 608 |
Abstract | In the stick-slip cycles of faults, the evolving contact state inside the gouge is a major contribution to the evolution of fault friction. However, the microscopic contact changes within stick-slip cycles associated with the possible existence of multiple fault slip regimes are still obscure. By simulating a sheared fault containing a granular gouge, we examine the particle-level contact evolution inside the gouge and the corresponding gouge stress field heterogeneity at fault slip. We find two regimes of fault slip driven by the heterogeneity of the gouge stress field: in the case of weak gouge stress field heterogeneity, local contact rearrangements give rise to macroscopic friction coefficient drop and accumulated gouge stress field heterogeneity (dispersive regime); in the instance of strong stress field heterogeneity, catastrophic failure occurs via contact rearrangement sweeping the whole fault and homogenizes the stress field distribution in the gouge (pervasive regime). In the language of self-organized criticality, the accumulation of gouge stress field heterogeneity is an inevitable consequence of increased entropy in the preparation stage of a large earthquake, which eventually destroys the long-range stress field correlations in the gouge and resets at the beginning of a new cycle of a large earthquake. |
Keywords | |
URL | [Source Record] |
Indexed By | |
Language | English
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Important Publications | NI Journal Papers
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SUSTech Authorship | First
; Corresponding
|
Funding Project | National Key R&D Program of China[2022YFF0800601]
; National Natural Science Fund for Major Programs of China[42090054]
; National Natu- ral Science Fund for Excellent Young Scholars of China[41922055]
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WOS Research Area | Geochemistry & Geophysics
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WOS Subject | Geochemistry & Geophysics
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WOS Accession No | WOS:000961945100001
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Publisher | |
ESI Research Field | GEOSCIENCES
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Scopus EID | 2-s2.0-85149438771
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Data Source | Scopus
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Citation statistics |
Cited Times [WOS]:0
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Document Type | Journal Article |
Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/513372 |
Department | Department of Earth and Space Sciences |
Affiliation | 1.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China 2.Faculty of Engineering,China University of Geosciences,Wuhan,Hubei,430074,China 3.Badong National Observation and Research Station of Geohazards,China University of Geosciences,Wuhan,430074,China |
First Author Affilication | Department of Earth and Space Sciences |
Corresponding Author Affilication | Department of Earth and Space Sciences |
First Author's First Affilication | Department of Earth and Space Sciences |
Recommended Citation GB/T 7714 |
Zhang,Yahui,Gao,Ke,Li,Changdong. Two slip regimes in sheared granular fault[J]. EARTH AND PLANETARY SCIENCE LETTERS,2023,608.
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APA |
Zhang,Yahui,Gao,Ke,&Li,Changdong.(2023).Two slip regimes in sheared granular fault.EARTH AND PLANETARY SCIENCE LETTERS,608.
|
MLA |
Zhang,Yahui,et al."Two slip regimes in sheared granular fault".EARTH AND PLANETARY SCIENCE LETTERS 608(2023).
|
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