Focal depths and mechanisms of shallow earthquakes in the Himalayan-Tibetan region

doi:10.1016/j.gr.2015.07.009

	Focal depths and mechanisms of shallow earthquakes in the Himalayan-Tibetan region
	Bai, L (Bai, Ling); Li, GH (Li, Guohui); Khan, NG (Khan, Nangyal G.); Zhao, JM (Zhao, Junmeng); Ding, L (Ding, Lin); Bai, L
刊名	GONDWANA RESEARCH
	2017
卷号	41 期号:0 页码:390-399
关键词	MANTLE BENEATH TIBET FAULT PLANE SOLUTIONS SOUTHERN TIBET LITHOSPHERIC MANTLE VELOCITY STRUCTURE SOURCE PARAMETERS ACTIVE TECTONICS TRAVEL-TIMES CENTRAL-ASIA TIEN-SHAN
DOI	10.1016/j.gr.2015.07.009
文献子类	Article
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.
学科主题	地球物理学
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000397873300025
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/8391]
专题	青藏高原研究所_图书馆
通讯作者	Bai, L
作者单位	Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China.
推荐引用方式 GB/T 7714	Bai, L ,Li, GH ,Khan, NG ,et al. Focal depths and mechanisms of shallow earthquakes in the Himalayan-Tibetan region[J]. GONDWANA RESEARCH,2017,41(0):390-399.
APA	Bai, L ,Li, GH ,Khan, NG ,Zhao, JM ,Ding, L ,&Bai, L.(2017).Focal depths and mechanisms of shallow earthquakes in the Himalayan-Tibetan region.GONDWANA RESEARCH,41(0),390-399.
MLA	Bai, L ,et al."Focal depths and mechanisms of shallow earthquakes in the Himalayan-Tibetan region".GONDWANA RESEARCH 41.0(2017):390-399.