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DOI | 10.1002/2017GL074296 |
Seismotectonics of the 2013 Lushan M-w 6.7 earthquake: Inversion tectonics in the eastern margin of the Tibetan Plateau | |
Lu, Renqi1; Xu, Xiwei1; He, Dengfa2; John, Suppe3; Liu, Bo4; Wang, Fuyun5; Tan, Xibin1; Li, Yingqiang2 | |
2017-08-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:16 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | On 20 April 2013, an unexpected M-w 6.7 earthquake occurred in Lushan County at the southern Longmen Shan, the eastern margin of the Tibetan Plateau. A high-resolution seismic reflection profile was combined with near-surface geological data, earthquake relocation and geodetic measurements, and a recent deep artificial seismic reflection profile to identify the active fault and seismotectonics of this earthquake. Three-dimensional imaging of the aftershocks was used to identify two planar faults that together form a y shape (f1 and f2). Seismic interpretations suggest that fault f1 did not break through the overlying Mesozoic and Cenozoic rocks and is a typical blind fault. Geodetic measurements suggest that the coseismic deformation is consistent with the geometry and kinematics of shear fault-bend folding. Deep seismic data indicate the syndepositional nature of fault f1 a preexisting normal fault older than the Triassic, which underwent positive inversion tectonics during the Late Cenozoic. A thrust fault f3 converges with f1 at a depth of approximately 12km with an accumulated slip 3.6km. This 2013 Lushan earthquake triggered by blind faults is a hidden earthquake. Blind and reactivated faults increase the potential risk and uncertainty related to earthquakes in the eastern margin of the Tibetan Plateau. |
英文关键词 | blind fault reactivated fault seismotectonics shear fault-bend folding inversion tectonics Lushan earthquake |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410658800018 |
WOS关键词 | 2008 WENCHUAN EARTHQUAKE ; LONGMEN SHAN ; SICHUAN BASIN ; M(S)7.0 EARTHQUAKE ; THRUST ; CHINA ; HAZARD ; EVOLUTION ; GEOMETRY ; UPLIFT |
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/25873 |
专题 | 气候变化 |
作者单位 | 1.China Earthquake Adm, Inst Geol, Key Lab Act Tecton & Volcano, Beijing, Peoples R China; 2.China Univ Geosci, Coll Energy Resources, Beijing, Peoples R China; 3.Univ Houston, Dept Earth & Atmospher Sci, Houston, TX USA; 4.Peking Univ, Sch Earth & Space Sci, Beijing, Peoples R China; 5.China Earthquake Adm, Geophys Explorat Ctr, Zhengzhou, Henan, Peoples R China |
推荐引用方式 GB/T 7714 | Lu, Renqi,Xu, Xiwei,He, Dengfa,et al. Seismotectonics of the 2013 Lushan M-w 6.7 earthquake: Inversion tectonics in the eastern margin of the Tibetan Plateau[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(16). |
APA | Lu, Renqi.,Xu, Xiwei.,He, Dengfa.,John, Suppe.,Liu, Bo.,...&Li, Yingqiang.(2017).Seismotectonics of the 2013 Lushan M-w 6.7 earthquake: Inversion tectonics in the eastern margin of the Tibetan Plateau.GEOPHYSICAL RESEARCH LETTERS,44(16). |
MLA | Lu, Renqi,et al."Seismotectonics of the 2013 Lushan M-w 6.7 earthquake: Inversion tectonics in the eastern margin of the Tibetan Plateau".GEOPHYSICAL RESEARCH LETTERS 44.16(2017). |
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