Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL079893 |
Low-Frequency Earthquakes and Pore Pressure Transients in Subduction Zones | |
Shapiro, Nikolai M.1,2; Campillo, Michel3; Kaminski, Edouard1; Vilotte, Jean-Pierre1; Jaupart, Claude1 | |
2018-10-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:20页码:11083-11094 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Russia |
英文摘要 | Low-frequency earthquakes (LFEs) have been observed in subduction zones and some major tectonic faults and may well be the most important constituents of tectonic tremors. In subduction zones, they were initially attributed to fluids released by dehydration reactions in downgoing slabs. Their seismic radiation pattern, however, is consistent with shear slip on the subduction interface, and this rapidly became the favored model. Recent studies indicate that the source duration of LFEs does not scale with magnitude, which can hardly be explained by shear rupture. We revisit the characteristics of LFE events in subduction zones as retrieved from local seismic arrays. We demonstrate that they can be explained equally well by forces acting in the direction of fluid motion. Such forces may be generated by a fast local pressure variations associated with unsteady fluid motion. The amount of fluid required for LFE activity is consistent with dehydration reaction rates. Plain Language Summary We discuss possible mechanisms of the low-frequency earthquakes, a component of the slow earthquake phenomena observed in fault zones, and suggest that they can be generated by very rapid fluid transients releasing the strong pressures gradients built during nonstationary fluid transport in the fault zones. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000451510500033 |
WOS关键词 | MOUNT ST-HELENS ; FAULT-VALVE BEHAVIOR ; FLUID-PRESSURE ; EPISODIC TREMOR ; SLOW-SLIP ; PERMEABILITY REDUCTION ; VOLCANIC TREMOR ; SINGLE-FORCE ; DEEP ; WAVES |
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/28949 |
专题 | 气候变化 |
作者单位 | 1.Univ Paris Diderot, Inst Phys Globe Paris, Paris, France; 2.Russian Acad Sci, Schmidt Inst Phys Earth, Moscow, Russia; 3.Univ Grenoble Alpes, Inst Sci Terre, Grenoble, France |
推荐引用方式 GB/T 7714 | Shapiro, Nikolai M.,Campillo, Michel,Kaminski, Edouard,et al. Low-Frequency Earthquakes and Pore Pressure Transients in Subduction Zones[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(20):11083-11094. |
APA | Shapiro, Nikolai M.,Campillo, Michel,Kaminski, Edouard,Vilotte, Jean-Pierre,&Jaupart, Claude.(2018).Low-Frequency Earthquakes and Pore Pressure Transients in Subduction Zones.GEOPHYSICAL RESEARCH LETTERS,45(20),11083-11094. |
MLA | Shapiro, Nikolai M.,et al."Low-Frequency Earthquakes and Pore Pressure Transients in Subduction Zones".GEOPHYSICAL RESEARCH LETTERS 45.20(2018):11083-11094. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论