Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL081074 |
Nucleation and Kinematic Rupture of the 2017 Mw 8.2 Tehuantepec Earthquake | |
Meng, Lingsen1; Huang, Hui1; Xie, Yuqing1; Bao, Han1; Dominguez, Luis A.2 | |
2019-04-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:7页码:3745-3754 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Mexico |
英文摘要 | Integrated observations from the 2017 Mw 8.2 Tehuantepec, Mexico, earthquake probe one of the largest normal-faulting events inside a subducting slab. In this study, we utilize a template matching approach to detect possible missing earthquakes within a 2-month period before the mainshock. The seismicity rate shows an abrupt increase in the last day around the mainshock hypocenter. The large distance between most of the foreshocks and the mainshock is not consistent with static stress triggering but suggests alternative mechanisms such as delayed dynamic triggering or aseismic transients. Back-projection using the USArray network reveals that the rupture propagated northwestward unilaterally at a speed of 3.6 km/s and terminated north of the Tehuantepec Ridge. Towards the end of the rupture, a wide step-over occurred onto an adjacent fault parallel to the main fault plane. The mainshock is likely a reactivation of subducted outer-rise faults, supported by the similarity of fault-strike angles. The surprisingly large magnitude is consistent with exceedingly large dimensions of outer-rise faulting in this segment of the central Mexican trench. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000465836200019 |
WOS关键词 | DOWNGOING COCOS PLATE ; M-W ; PUEBLA-MORELOS ; GROUND MOTION ; MEXICO ; SLIP ; SUBDUCTION ; CHIAPAS ; RECURRENCE ; SEISMICITY |
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/182367 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Los Angeles, Earth Planetary & Space Sci, Los Angeles, CA 90095 USA; 2.Univ Nacl Autonoma Mexico, Natl Sch Adv Studies, Morelia, Michoacan, Mexico |
推荐引用方式 GB/T 7714 | Meng, Lingsen,Huang, Hui,Xie, Yuqing,et al. Nucleation and Kinematic Rupture of the 2017 Mw 8.2 Tehuantepec Earthquake[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(7):3745-3754. |
APA | Meng, Lingsen,Huang, Hui,Xie, Yuqing,Bao, Han,&Dominguez, Luis A..(2019).Nucleation and Kinematic Rupture of the 2017 Mw 8.2 Tehuantepec Earthquake.GEOPHYSICAL RESEARCH LETTERS,46(7),3745-3754. |
MLA | Meng, Lingsen,et al."Nucleation and Kinematic Rupture of the 2017 Mw 8.2 Tehuantepec Earthquake".GEOPHYSICAL RESEARCH LETTERS 46.7(2019):3745-3754. |
条目包含的文件 | 条目无相关文件。 |
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。
修改评论