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DOI | 10.1002/2017GL074634 |
Aftershocks driven by afterslip and fluid pressure sweeping through a fault-fracture mesh | |
Ross, Zachary E.1; Rollins, Christopher1; Cochran, Elizabeth S.2; Hauksson, Egill1; Avouac, Jean-Philippe1; Ben-Zion, Yehuda3 | |
2017-08-28 | |
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:16 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | A variety of physical mechanisms are thought to be responsible for the triggering and spatiotemporal evolution of aftershocks. Here we analyze a vigorous aftershock sequence and postseismic geodetic strain that occurred in the Yuha Desert following the 2010 M-w 7.2 El Mayor-Cucapah earthquake. About 155,000 detected aftershocks occurred in a network of orthogonal faults and exhibit features of two distinct mechanisms for aftershock triggering. The earliest aftershocks were likely driven by afterslip that spread away from the main shock with the logarithm of time. A later pulse of aftershocks swept again across the Yuha Desert with square root time dependence and swarm-like behavior; together with local geological evidence for hydrothermalism, these features suggest that the events were driven by fluid diffusion. The observations illustrate how multiple driving mechanisms and the underlying fault structure jointly control the evolution of an aftershock sequence. |
英文关键词 | aftershocks seismicity postseismic deformation fluid migration afterslip earthquake triggering |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410658800021 |
WOS关键词 | MAYOR-CUCAPAH EARTHQUAKE ; CALIFORNIA ; EVOLUTION ; PERMEABILITY ; CLUSTERS ; CATALOG ; SWARMS ; DAMAGE ; MODEL ; DECAY |
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/25876 |
专题 | 气候变化 |
作者单位 | 1.CALTECH, Seismol Lab, Pasadena, CA 91125 USA; 2.US Geol Survey, Pasadena, CA 91106 USA; 3.Univ Southern Calif, Dept Earth Sci, Los Angeles, CA USA |
推荐引用方式 GB/T 7714 | Ross, Zachary E.,Rollins, Christopher,Cochran, Elizabeth S.,et al. Aftershocks driven by afterslip and fluid pressure sweeping through a fault-fracture mesh[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(16). |
APA | Ross, Zachary E.,Rollins, Christopher,Cochran, Elizabeth S.,Hauksson, Egill,Avouac, Jean-Philippe,&Ben-Zion, Yehuda.(2017).Aftershocks driven by afterslip and fluid pressure sweeping through a fault-fracture mesh.GEOPHYSICAL RESEARCH LETTERS,44(16). |
MLA | Ross, Zachary E.,et al."Aftershocks driven by afterslip and fluid pressure sweeping through a fault-fracture mesh".GEOPHYSICAL RESEARCH LETTERS 44.16(2017). |
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