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DOI	10.1016/j.gr.2015.07.009
	Focal depths and mechanisms of shallow earthquakes in the Himalayan-Tibetan region
	Bai, Ling; Li, Guohui; Khan, Nangyal G.; Zhao, Junmeng; Ding, Lin
通讯作者	Bai, L (通讯作者)
发表日期	2017
ISSN	1342-937X
EISSN	1878-0571
起始页码	390
结束页码	399
卷号	41
英文摘要	The complexity of the Himalayan-Tibetan lithospheric deformation is evident from widespread seismicity and diverse focal mechanism solutions. Here we investigate the focal depths and fault plane solutions of 97 moderate and shallow earthquakes in the Himalayan-Tibetan region by modeling teleseismic P-wave and its tailing surface reflections pP and sP. Earthquakes in central Tibet are restricted to the upper crust and originate dominantly by strike-slip faulting, in agreement with the low P-wave velocity layers in the lower crust and the strong S-wave attenuation zones in the uppermost mantle. In northern and southern Tibet, where the Asian and Indian plates descend beneath central Tibet, earthquakes appear to be distributed throughout the thickness of the crust and exhibit dominantly reverse faulting. We incorporate well-estimated focal depths of 127 additional earthquakes from previous studies to estimate the seismogenic thickness (Ts) of the study region. The resulting pattern of Ts is found to be rather flat for central and northeastern Tibet and highly variable along the strike of the Himalayan foreland. (C) 2015 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
关键词	FAULT PLANE SOLUTIONS MANTLE BENEATH TIBET VELOCITY STRUCTURE SOURCE PARAMETERS ACTIVE TECTONICS TIEN-SHAN INDIA DEFORMATION PLATEAU PAMIR
英文关键词	Tibetan plateau; Earthquake focal depths; Focal mechanisms; Seismogenic thickness
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000397873300025
来源期刊	GONDWANA RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258883
推荐引用方式 GB/T 7714	Bai, Ling,Li, Guohui,Khan, Nangyal G.,et al. Focal depths and mechanisms of shallow earthquakes in the Himalayan-Tibetan region[J]. 中国科学院青藏高原研究所,2017,41.
APA	Bai, Ling,Li, Guohui,Khan, Nangyal G.,Zhao, Junmeng,&Ding, Lin.(2017).Focal depths and mechanisms of shallow earthquakes in the Himalayan-Tibetan region.GONDWANA RESEARCH,41.
MLA	Bai, Ling,et al."Focal depths and mechanisms of shallow earthquakes in the Himalayan-Tibetan region".GONDWANA RESEARCH 41(2017).