DOI: 10.1002/2014GL059269
论文题名: Crustal structure beneath SE Tibet from joint analysis of receiver functions and Rayleigh wave dispersion
作者: Sun X. ; Bao X. ; Xu M. ; Eaton D.W. ; Song X. ; Wang L. ; Ding Z. ; Mi N. ; Yu D. ; Li H.
刊名: Geophysical Research Letters
ISSN: 0094-10274
EISSN: 1944-10005
出版年: 2014
卷: 41, 期: 5 起始页码: 1479
结束页码: 1484
语种: 英语
英文关键词: crustal flow
; low-velocity zones
; Rayleigh wave
; receiver function
; SE Tibet
Scopus关键词: Dispersion (waves)
; Rayleigh waves
; Wave propagation
; Complex pattern
; Crustal flow
; Crustal structure
; Low-velocity zone
; Radial anisotropy
; Rayleigh-wave dispersion
; Receiver functions
; S-wave velocity
; Deformation
; anisotropy
; crustal structure
; low velocity zone
; radial flow
; Rayleigh wave
; wave dispersion
; wave velocity
; China
; Xizang
英文摘要: New constraints on the pattern of crustal flow in SE Tibet are obtained from joint analysis of receiver functions and Rayleigh wave dispersion with a newly deployed seismic array. The crust in the Sichuan-Yunnan Diamond Block has an average thickness of ~45 km and gradually thins toward the Indo-China Block to the west and the Yangtze Block to the east. High VP/VS ratios are detected to the west of the Xiaojiang fault, but not in the Yangtze Block to the east. The S wave velocity profile reveals that intra-crustal low-velocity zones (IC-LVZs) are strongly heterogeneous, with two LVZs in the middle and mid-lower crust, respectively, in marked contrast to previous observations of a single LVZ. Combined with other observations, the two IC-LVZs are interpreted as isolated channels of crustal flow at different depths beneath SE Tibet, resulting in the observed complex pattern of radial anisotropy and further elucidating patterns of flow and deformation. Key Points Joint inversion shows two major low-velocity zones (LVZs) at different depths Two major LVZs suggest isolated channels of crustal flow beneath SE Tibet Results indicate previously unknown patterns of flow and deformation ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84895604374&doi=10.1002%2f2014GL059269&partnerID=40&md5=40dd1b7f48956846b170559f1c588a46
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7538
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: State Key Laboratory for Mineral Deposits Research, Nanjing University, Nanjing, China
Recommended Citation:
Sun X.,Bao X.,Xu M.,et al. Crustal structure beneath SE Tibet from joint analysis of receiver functions and Rayleigh wave dispersion[J]. Geophysical Research Letters,2014-01-01,41(5).