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DOI | 10.1002/2016GL071688 |
Impacts of off-fault plasticity on fault slip and interaction at the base of the seismogenic zone | |
Nevitt, Johanna M.1,2; Pollard, David D.1 | |
2017-02-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Direct observations of faults exhumed from midcrustal depths indicate that distributed inelastic deformation enhances fault slip and interaction across steps. Constrained by field measurements, finite element models demonstrate that the slip distribution for a fault in a Mises elastoplastic continuum differs significantly from that of a linear elastic model fault. Lobes of plastic shear strain align with fault tips and effectively lengthen the fault, resulting in greater maximum slip and increased slip gradients near fault tips. Additionally, distributed plastic shear strain facilitates slip transfer between echelon fault segments. Fault arrays separated by contractional steps, which are subjected to greater mean normal stress and Mises equivalent stress, produce greater maximum slip than do those separated by extensional steps (with no fractures). These results provide insight into fault behavior at the base of the seismogenic zone, with implications for rupture dynamics of discontinuous faults. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396411100012 |
WOS关键词 | SIERRA-NEVADA BATHOLITH ; GRANITIC ROCK ; DEFORMATION FIELDS ; ABBOT QUADRANGLE ; SEISMIC SLIP ; MAGMATIC ARC ; SHEAR ZONE ; DISPLACEMENT ; CALIFORNIA ; EARTHQUAKE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28700 |
专题 | 气候变化 |
作者单位 | 1.Stanford Univ, Dept Geol Sci, Stanford, CA 94305 USA; 2.US Geol Survey, 345 Middlefield Rd, Menlo Pk, CA 94025 USA |
推荐引用方式 GB/T 7714 | Nevitt, Johanna M.,Pollard, David D.. Impacts of off-fault plasticity on fault slip and interaction at the base of the seismogenic zone[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(4). |
APA | Nevitt, Johanna M.,&Pollard, David D..(2017).Impacts of off-fault plasticity on fault slip and interaction at the base of the seismogenic zone.GEOPHYSICAL RESEARCH LETTERS,44(4). |
MLA | Nevitt, Johanna M.,et al."Impacts of off-fault plasticity on fault slip and interaction at the base of the seismogenic zone".GEOPHYSICAL RESEARCH LETTERS 44.4(2017). |
条目包含的文件 | 条目无相关文件。 |
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