DOI: 10.1002/2015GL064568
论文题名: Vertical coherence of deformation in lithosphere in the eastern Himalayan syntaxis using GPS, Quaternary fault slip rates, and shear wave splitting data
作者: Chang L. ; Flesch L.M. ; Wang C.-Y. ; Ding Z.
刊名: Geophysical Research Letters
ISSN: 0094-9398
EISSN: 1944-9129
出版年: 2015
卷: 42, 期: 14 起始页码: 5813
结束页码: 5819
语种: 英语
英文关键词: anisotropy
; GPS
; SE Tibet
; vertical coherence
Scopus关键词: Anisotropy
; Deformation
; Global positioning system
; Shear flow
; Shear waves
; Anisotropy measurements
; Continuous surface
; Fault-slip rates
; GPS measurements
; Mantle deformation
; Shear wave splitting
; Surface observation
; Vertical coherence
; Fault slips
; anisotropy
; deformation
; exhumation
; fault slip
; GPS
; lithosphere
; S-wave
; China
; Xizang
英文摘要: We present 59 new SKS/SKKS and combine them with 69 previously published data to infer the mantle deformation field in SE Tibet. The dense set of anisotropy measurements in the eastern Himalayan syntaxis (EHS) are oriented along a NE-SW azimuth and rotate clockwise in the surround regions. We use GPS measurements and geologic data to determine a continuous surface deformation field that is then used to predict shear wave spitting directions at each station. Comparison of splitting observations with predictions yields an average misfit of 11.7° illustrating that deformation is vertically coherent, consistent with previous studies. Within the central EHS in areas directly surrounding the Namche-Barwa metamorphic massif, the average misfit of 11 stations increases to 60.8°, and vertical coherence is no longer present. The complexity of the mantle anisotropy and surface observations argues for local alteration of the strain fields here associated with recent rapid exhumation of the Indian crust. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938953078&doi=10.1002%2f2015GL064568&partnerID=40&md5=a0aacd9429e8202c7df977f11252c494
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9013
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: China Earthquake Administration, Institute of Geophysics, Beijing, China
Recommended Citation:
Chang L.,Flesch L.M.,Wang C.-Y.,et al. Vertical coherence of deformation in lithosphere in the eastern Himalayan syntaxis using GPS, Quaternary fault slip rates, and shear wave splitting data[J]. Geophysical Research Letters,2015-01-01,42(14).