GSTDTAP  > 气候变化
DOI10.1002/2017GL073226
Possible precursory signals in damage zone foreshocks
Savage, Heather M.1; Keranen, Katie M.2; Schaff, David P.1; Dieck, Caitlin1,3
2017-06-16
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2017
卷号44期号:11
文章类型Article
语种英语
国家USA
英文摘要

Foreshocks may provide a precursory signal of an impending earthquake, but their role in nucleation of the main shock is unclear. One way to further our understanding of foreshock failure mechanisms is to determine where they occur in the fault zone. However, earthquake locations commonly include uncertainties large enough to allow rupture on either the main fault interface or on subsidiary fractures within a surrounding damage zone. Here we obtain precise earthquake locations, with similar to 10m uncertainty, for foreshocks and aftershocks of an M-w 5.0 near Prague, OK, USA. Repeating earthquakes imply that some precursory slow slip occurred before the main shock. In addition, we show that foreshocks initially rupture faults and fractures throughout the 300m thick fault damage zone and later localize onto a narrower zone (<100m thick) nearer the main shock hypocenter. Focal mechanisms corroborate that foreshocks occur in the surrounding damage zone as well as on the main shock rupture interface. These results highlight that earthquake nucleation is most likely a complex feedback between frictional failure processes on the fault interface and deformation in the surrounding damaged rock, rather than simply nucleation on a single surface.


英文关键词damage zone foreshock fault zone structure earthquake nucleation induced earthquakes
领域气候变化
收录类别SCI-E
WOS记录号WOS:000404382600020
WOS关键词EARTHQUAKE SEQUENCE ; FAULT ZONE ; FOCAL MECHANISMS ; FLUID-INJECTION ; UNITED-STATES ; SLIP ; CALIFORNIA ; SEISMICITY ; PREDICTION ; OKLAHOMA
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/27014
专题气候变化
作者单位1.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA;
2.Cornell Univ, Dept Earth & Atmospher Sci, Ithaca, NY USA;
3.Columbia Univ, Dept Earth & Environm Sci, Palisades, NY USA
推荐引用方式
GB/T 7714
Savage, Heather M.,Keranen, Katie M.,Schaff, David P.,et al. Possible precursory signals in damage zone foreshocks[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(11).
APA Savage, Heather M.,Keranen, Katie M.,Schaff, David P.,&Dieck, Caitlin.(2017).Possible precursory signals in damage zone foreshocks.GEOPHYSICAL RESEARCH LETTERS,44(11).
MLA Savage, Heather M.,et al."Possible precursory signals in damage zone foreshocks".GEOPHYSICAL RESEARCH LETTERS 44.11(2017).
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
[Savage, Heather M.]的文章
[Keranen, Katie M.]的文章
[Schaff, David P.]的文章
百度学术
百度学术中相似的文章
[Savage, Heather M.]的文章
[Keranen, Katie M.]的文章
[Schaff, David P.]的文章
必应学术
必应学术中相似的文章
[Savage, Heather M.]的文章
[Keranen, Katie M.]的文章
[Schaff, David P.]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。