GSTDTAP  > 气候变化
DOI10.1002/2017GL076287
A Model of Aftershock Migration Driven by Afterslip
Perfettini, H.1; Frank, W. B.2,3; Marsan, D.1; Bouchon, M.1
2018-03-16
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2018
卷号45期号:5页码:2283-2293
文章类型Article
语种英语
国家France; USA
英文摘要

Aftershocks region have been extensively reported to expand logarithmically with time. The associated migration velocity is typically of the order of several km/decade but can be much larger, especially when observing early aftershock sequences, seismic swarms, or tremors. We present here a model for the expansion of aftershock zones based on the idea that aftershocks are triggered as afterslip grows with time along the fault. One of the model assumptions is that aftershocks are triggered when a critical level of afterslip is reached. We predict that the migration velocity V-p at time t following the mainshock is given by V-p = zeta A'/Delta X-tau c/t, where A' is a frictional parameter, Delta tau a characteristic value for the stress perturbation, c the radius of the stress perturbation, and zeta a constant of order unity. The scaling V-p alpha 1/t implies a logarithmic expansion of the aftershock zone with time. The migration velocities predicted by our model are in quantitative agreement with the observations reported following aftershock sequence of small and large earthquakes in various tectonic settings, seismic swarms, and tremor sequences.


Plain Language Summary Aftershocks are shown to migrate with time away from the rupture area of the mainshock. This migration typically occurs as the logarithm of time. We present here a model based on the idea that afterslip drives aftershocks. The model is able to predict the migration as the logarithm of time, predicting apparent propagation velocities consistent with the observations. The propagation velocity is simply related to the physical parameters of the model.


英文关键词aftershocks afterslip migration rate strengthening rheology
领域气候变化
收录类别SCI-E
WOS记录号WOS:000428402400019
WOS关键词TOHOKU-OKI EARTHQUAKE ; POSTSEISMIC DEFORMATION ; POSSIBLE MECHANISM ; SPATIAL VARIATIONS ; AREA EXPANSION ; ZONE ; CALIFORNIA ; TAIWAN ; CHILE ; CREEP
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/27507
专题气候变化
作者单位1.Univ Grenoble Alpes, ISTerre, IRD, CNRS, Grenoble, France;
2.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA USA;
3.Univ Southern Calif, Dept Earth Sci, Los Angeles, CA USA
推荐引用方式
GB/T 7714
Perfettini, H.,Frank, W. B.,Marsan, D.,et al. A Model of Aftershock Migration Driven by Afterslip[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(5):2283-2293.
APA Perfettini, H.,Frank, W. B.,Marsan, D.,&Bouchon, M..(2018).A Model of Aftershock Migration Driven by Afterslip.GEOPHYSICAL RESEARCH LETTERS,45(5),2283-2293.
MLA Perfettini, H.,et al."A Model of Aftershock Migration Driven by Afterslip".GEOPHYSICAL RESEARCH LETTERS 45.5(2018):2283-2293.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Perfettini, H.]的文章
[Frank, W. B.]的文章
[Marsan, D.]的文章
百度学术
百度学术中相似的文章
[Perfettini, H.]的文章
[Frank, W. B.]的文章
[Marsan, D.]的文章
必应学术
必应学术中相似的文章
[Perfettini, H.]的文章
[Frank, W. B.]的文章
[Marsan, D.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。