Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL071569 |
Nucleation process of magnitude 2 repeating earthquakes on the San Andreas Fault predicted by rate-and-state fault models with SAFOD drill core data | |
Kaneko, Yoshihiro1; Carpenter, Brett M.2,3; Nielsen, Stefan B.4 | |
2017 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | New Zealand; USA; Italy; England |
英文摘要 | Recent laboratory shear-slip experiments conducted on a nominally flat frictional interface reported the intriguing details of a two-phase nucleation of stick-slip motion that precedes the dynamic rupture propagation. This behavior was subsequently reproduced by a physics-based model incorporating laboratory-derived rate-and-state friction laws. However, applying the laboratory and theoretical results to the nucleation of crustal earthquakes remains challenging due to poorly constrained physical and friction properties of fault zone rocks at seismogenic depths. Here we apply the same physics-based model to simulate the nucleation process of crustal earthquakes using unique data acquired during the San Andreas Fault Observatory at Depth (SAFOD) experiment and new and existing measurements of friction properties of SAFOD drill core samples. Using this well-constrained model, we predict what the nucleation phase will look like for magnitude approximate to 2 repeating earthquakes on segments of the San Andreas Fault at a 2.8km depth. We find that despite up to 3 orders of magnitude difference in the physical and friction parameters and stress conditions, the behavior of the modeled nucleation is qualitatively similar to that of laboratory earthquakes, with the nucleation consisting of two distinct phases. Our results further suggest that precursory slow slip associated with the earthquake nucleation phase may be observable in the hours before the occurrence of the magnitude approximate to 2 earthquakes by strain measurements close (a few hundred meters) to the hypocenter, in a position reached by the existing borehole. |
英文关键词 | earthquake nucleation SAFOD experiment rate-and-state friction numerical modeling slow rupture front laboratory earthquakes |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000393954900020 |
WOS关键词 | STICK-SLIP INSTABILITY ; FRICTIONAL-PROPERTIES ; ROCK FRICTION ; LABORATORY EARTHQUAKES ; FORESHOCK SEQUENCES ; STRAIN-RATE ; STRENGTH ; BEHAVIOR ; RUPTURE ; SHEAR |
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/27429 |
专题 | 气候变化 |
作者单位 | 1.GNS Sci, Lower Hutt, New Zealand; 2.Univ Oklahoma, Sch Geol & Geophys, Norman, OK 73019 USA; 3.Ist Nazl Geofis & Vulcanol, Rome, Italy; 4.Univ Durham, Dept Earth Sci, Durham, England |
推荐引用方式 GB/T 7714 | Kaneko, Yoshihiro,Carpenter, Brett M.,Nielsen, Stefan B.. Nucleation process of magnitude 2 repeating earthquakes on the San Andreas Fault predicted by rate-and-state fault models with SAFOD drill core data[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(1). |
APA | Kaneko, Yoshihiro,Carpenter, Brett M.,&Nielsen, Stefan B..(2017).Nucleation process of magnitude 2 repeating earthquakes on the San Andreas Fault predicted by rate-and-state fault models with SAFOD drill core data.GEOPHYSICAL RESEARCH LETTERS,44(1). |
MLA | Kaneko, Yoshihiro,et al."Nucleation process of magnitude 2 repeating earthquakes on the San Andreas Fault predicted by rate-and-state fault models with SAFOD drill core data".GEOPHYSICAL RESEARCH LETTERS 44.1(2017). |
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