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DOI | 10.1029/2018GL078103 |
Time-Dependent Compaction as a Mechanism for Regular Stick-Slips | |
van den Ende, M. P. A.; Niemeijer, A. R. | |
2018-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:12页码:5959-5967 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands |
英文摘要 | Owing to their destructive potential, earthquakes receive considerable attention from laboratory studies. In friction experiments, stick-slips are studied as the laboratory equivalent of natural earthquakes, and numerous attempts have been made to simulate stick-slips numerically using the discrete element method (DEM). However, while laboratory stick-slips commonly exhibit regular stress drops and recurrence times, stick-slips generated in DEM simulations are highly irregular. This discrepancy highlights a gap in our understanding of stick-slip mechanics, which propagates into our understanding of earthquakes. In this work, we show that regular stick-slips emerge in DEM when time-dependent compaction by pressure solution is considered. We further show that the stress drop and recurrence time of stick-slips are directly controlled by the kinetics of pressure solution. Since compaction is known to operate in faults, this mechanism for frictional instabilities directly relates to natural seismicity. Plain Language Summary Earthquakes have a big impact on the society and are therefore intensively studied in laboratory settings. The study of laboratory-scale earthquakes, the so-called stick-slips, generates new insights into the origin and behavior of earthquakes in nature. At present, computer simulations of stick-slips have not been able to reproduce prominent laboratory observations, which shows that the origin of stick-slips, and of natural earthquakes, is not yet fully understood. In this work, we present computer simulations that succeed to reproduce the laboratory observations, thereby revealing that time-dependent compaction is of great importance to stick-slips and natural earthquakes. These results help to further understand the complex behavior of earthquakes in nature. |
英文关键词 | stick-slip mechanics pressure solution force chains discrete element method |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000438499100016 |
WOS关键词 | GRANULAR FAULT GOUGE ; DISCRETE ELEMENT METHOD ; PRESSURE SOLUTION ; NUMERICAL SIMULATIONS ; HEALING BEHAVIOR ; NORMAL STRESS ; FORCE CHAINS ; SLOW-SLIP ; FRICTION ; EVOLUTION |
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/25841 |
专题 | 气候变化 |
作者单位 | Univ Utrecht, Dept Earth Sci, High Pressure & Temp Lab, Utrecht, Netherlands |
推荐引用方式 GB/T 7714 | van den Ende, M. P. A.,Niemeijer, A. R.. Time-Dependent Compaction as a Mechanism for Regular Stick-Slips[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(12):5959-5967. |
APA | van den Ende, M. P. A.,&Niemeijer, A. R..(2018).Time-Dependent Compaction as a Mechanism for Regular Stick-Slips.GEOPHYSICAL RESEARCH LETTERS,45(12),5959-5967. |
MLA | van den Ende, M. P. A.,et al."Time-Dependent Compaction as a Mechanism for Regular Stick-Slips".GEOPHYSICAL RESEARCH LETTERS 45.12(2018):5959-5967. |
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