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DOI | 10.1002/2016GL071845 |
The super-interseismic phase of the megathrust earthquake cycle in Chile | |
Melnick, Daniel1,2; Moreno, Marcos3; Quinteros, Javier3; Carlos Baez, Juan4; Deng, Zhiguo3; Li, Shaoyang3; Oncken, Onno3 | |
2017-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Chile |
英文摘要 | Along a subduction zone, great megathrust earthquakes recur either after long seismic gaps lasting several decades to centuries or over much shorter periods lasting hours to a few years when cascading successions of earthquakes rupture nearby segments of the fault. We analyze a decade of continuous Global Positioning System observations along the South American continent to estimate changes in deformation rates between the 2010 Maule (M8.8) and 2015 Illapel (M8.3) Chilean earthquakes. We find that surface velocities increased after the 2010 earthquake, in response to continental-scale viscoelastic mantle relaxation and to regional-scale increased degree of interplate locking. We propose that increased locking occurs transiently during a super-interseismic phase in segments adjacent to a megathrust rupture, responding to bending of both plates caused by coseismic slip and subsequent afterslip. Enhanced strain rates during a super-interseismic phase may therefore bring a megathrust segment closer to failure and possibly triggered the 2015 event. |
英文关键词 | megathrust earthquake cycle Chile |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395652600023 |
WOS关键词 | ANDEAN SUBDUCTION ZONE ; TOHOKU-OKI EARTHQUAKE ; VISCOELASTIC RELAXATION ; GREAT EARTHQUAKES ; PACIFIC PLATE ; JAPAN TRENCH ; DEFORMATION ; MODEL ; AFTERSLIP ; TSUNAMIS |
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/26298 |
专题 | 气候变化 |
作者单位 | 1.Univ Potsdam, Inst Earth & Environm Sci, Potsdam, Germany; 2.Univ Austral Chile, Inst Ciencias Tierra, TAQUACH, Valdivia, Chile; 3.GFZ Helmholtz Ctr Potsdam, Potsdam, Germany; 4.Univ Chile, Ctr Sismol Natl, Santiago, Chile |
推荐引用方式 GB/T 7714 | Melnick, Daniel,Moreno, Marcos,Quinteros, Javier,et al. The super-interseismic phase of the megathrust earthquake cycle in Chile[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(2). |
APA | Melnick, Daniel.,Moreno, Marcos.,Quinteros, Javier.,Carlos Baez, Juan.,Deng, Zhiguo.,...&Oncken, Onno.(2017).The super-interseismic phase of the megathrust earthquake cycle in Chile.GEOPHYSICAL RESEARCH LETTERS,44(2). |
MLA | Melnick, Daniel,et al."The super-interseismic phase of the megathrust earthquake cycle in Chile".GEOPHYSICAL RESEARCH LETTERS 44.2(2017). |
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