DOI: 10.1002/2015GL063845
论文题名: The lithosphere-asthenosphere transition and radial anisotropy beneath the Australian continent
作者: Yoshizawa K. ; Kennett B.L.N.
刊名: Geophysical Research Letters
ISSN: 0094-9286
EISSN: 1944-9017
出版年: 2015
卷: 42, 期: 10 起始页码: 3839
结束页码: 3846
语种: 英语
英文关键词: anisotropy
; asthenosphere
; Australia
; lithosphere
Scopus关键词: Anisotropy
; Shear waves
; Surface waves
; Asthenosphere
; Australia
; Australian continents
; Lateral variations
; Lithosphere
; Lithospheric anisotropy
; Receiver functions
; Smooth transitions
; Shear flow
; anisotropy
; asthenosphere
; craton
; discontinuity
; lithosphere
; radial flow
; shear flow
; surface wave
; suture zone
; three-dimensional modeling
; wave velocity
; Australia
英文摘要: A new 3-D S wave speed model for the Australian region derived from multimode surface waves allows us to examine the nature of the lithosphere-asthenosphere transition (LAT) and its relation to radial anisotropy. In eastern Phanerozoic Australia the estimated depths of the LAT tie well with those from receiver functions. However, in the Archean and Proterozoic lithosphere in western and central Australia, the LAT derived from the surface wave model is generally much deeper than the discontinuities recognized from receiver functions and shows a smooth transition. There is significant radial anisotropy (SH > SV) in the upper lithosphere as well as in the LAT and the underlying asthenosphere. Strong anisotropy in the asthenosphere reflects the effects of present shear flow in the mantle beneath the continent. The lateral variation of lithospheric anisotropy correlates well with the suture zones between cratonic blocks, representing frozen anisotropy associated with the ancient tectonics of Australia. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931567719&doi=10.1002%2f2015GL063845&partnerID=40&md5=2d76d8d42e86932a1d1622652ff8eef0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8902
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: Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, Sapporo, Japan
Recommended Citation:
Yoshizawa K.,Kennett B.L.N.. The lithosphere-asthenosphere transition and radial anisotropy beneath the Australian continent[J]. Geophysical Research Letters,2015-01-01,42(10).