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DOI | 10.1038/s41561-019-0474-8 |
Duplex in the Main Himalayan Thrust illuminated by aftershocks of the 2015 M-w 7.8 Gorkha earthquake | |
Mendoza, M. M.1; Ghosh, A.1; Karplus, M. S.2; Klemperer, S. L.3; Sapkota, S. N.4; Adhikari, L. B.4; Velasco, A.2 | |
2019-12-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2019 |
卷号 | 12期号:12页码:1018-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Nepal |
英文摘要 | In April 2015, the lower locked portion of the Main Himalayan Thrust ruptured beneath Nepal, causing the disastrous M-w 7.8 Gorkha earthquake. Elucidating the enigmatic geometry of this plate boundary fault is important for understanding the nucleation and arrest of large earthquake ruptures as well as the seismic hazard, topography and tectonics of the Himalaya. Here we interpret the geometry of the Main Himalayan Thrust from the spatial distribution and rupture patterns of a dynamic sequence of aftershocks following the Gorkha earthquake, which were recorded by a rapidly deployed dense seismic network. We find that the thrust comprises two north-dipping subhorizontal planes that are connected by a system of bounded imbricate thrust faults; this structure is known as a duplex. We propose that this duplex acts as an impediment to plate convergence and accommodates tectonic stress along its complex system of faults. Such a prominent structure to the Main Himalayan Thrust is consistent with surface geological studies but challenges geophysically derived conventional models with simpler geometries. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000499653700013 |
WOS关键词 | CENTRAL NEPAL ; MEGATHRUST ; ALGORITHM ; RUPTURE ; SEGMENTATION ; SEISMOLOGY ; MAGNITUDE ; LOCATION ; SEQUENCE ; SLIP |
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/223774 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Calif Riverside, Dept Earth & Planetary Sci, Riverside, CA 92521 USA; 2.Univ Texas El Paso, Dept Geol Sci, El Paso, TX 79968 USA; 3.Stanford Univ, Dept Geophys, Stanford, CA 94305 USA; 4.Dept Mines & Geol, Kathmandu, Nepal |
推荐引用方式 GB/T 7714 | Mendoza, M. M.,Ghosh, A.,Karplus, M. S.,et al. Duplex in the Main Himalayan Thrust illuminated by aftershocks of the 2015 M-w 7.8 Gorkha earthquake[J]. NATURE GEOSCIENCE,2019,12(12):1018-+. |
APA | Mendoza, M. M..,Ghosh, A..,Karplus, M. S..,Klemperer, S. L..,Sapkota, S. N..,...&Velasco, A..(2019).Duplex in the Main Himalayan Thrust illuminated by aftershocks of the 2015 M-w 7.8 Gorkha earthquake.NATURE GEOSCIENCE,12(12),1018-+. |
MLA | Mendoza, M. M.,et al."Duplex in the Main Himalayan Thrust illuminated by aftershocks of the 2015 M-w 7.8 Gorkha earthquake".NATURE GEOSCIENCE 12.12(2019):1018-+. |
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