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DOI | 10.1002/2017GL075675 |
Nucleation Phase and Dynamic Inversion of the M-w 6.9 Valparaiso 2017 Earthquake in Central Chile | |
Ruiz, S.1; Aden-Antoniow, F.2; Baez, J. C.3; Otarola, C.1,4; Potin, B.3; del Campo, F.3; Poli, P.5; Flores, C.1,4; Satriano, C.2; Leyton, F.3; Madariaga, R.6; Bernard, P.2 | |
2017-10-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:20 |
文章类型 | Article |
语种 | 英语 |
国家 | Chile; France; USA |
英文摘要 | The Valparaiso 2017 sequence occurred in the Central Chile megathrust, an active zone where the last mega-earthquake occurred in 1730. Intense seismicity started 2 days before the M-w 6.9 mainshock, a slow trenchward movement was observed in the coastal GPS antennas and was accompanied by foreshocks and repeater-type seismicity. To characterize the rupture process of the mainshock, we perform a dynamic inversion using the strong-motion records and an elliptical patch approach. We suggest that a slow slip event preceded and triggered the M-w 6.9 earthquake, which ruptured an elliptical asperity (semiaxis of 10 km and 5 km, with a subshear rupture, stress drop of 11.71 MPa, yield stress of 17.21 MPa, slip weakening of 0.65 m, and kappa value of 1.98). This earthquake could be the beginning of a long-term nucleation phase to a major rupture, within the highly coupled Central Chile zone where a megathrust earthquake like 1730 is expected. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416761600025 |
WOS关键词 | ANDEAN SUBDUCTION ZONE ; ISOLA |
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/26265 |
专题 | 气候变化 |
作者单位 | 1.Univ Chile, Geophys Dept, Santiago, Chile; 2.Inst Phys Globe Paris, Paris, France; 3.Univ Chile, Ctr Sismol Nacl, Santiago, Chile; 4.Univ Chile, Geol Dept, Santiago, Chile; 5.MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA; 6.Ecole Normale Super, Paris, France |
推荐引用方式 GB/T 7714 | Ruiz, S.,Aden-Antoniow, F.,Baez, J. C.,et al. Nucleation Phase and Dynamic Inversion of the M-w 6.9 Valparaiso 2017 Earthquake in Central Chile[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(20). |
APA | Ruiz, S..,Aden-Antoniow, F..,Baez, J. C..,Otarola, C..,Potin, B..,...&Bernard, P..(2017).Nucleation Phase and Dynamic Inversion of the M-w 6.9 Valparaiso 2017 Earthquake in Central Chile.GEOPHYSICAL RESEARCH LETTERS,44(20). |
MLA | Ruiz, S.,et al."Nucleation Phase and Dynamic Inversion of the M-w 6.9 Valparaiso 2017 Earthquake in Central Chile".GEOPHYSICAL RESEARCH LETTERS 44.20(2017). |
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