DOI: 10.1002/grl.50878
论文题名: Crustal structure of the east Gondwana margin in southeast Australia revealed by transdimensional ambient seismic noise tomography
作者: Young M.K. ; Cayley R.A. ; McLean M.A. ; Rawlinson N. ; Arroucau P. ; Salmon M.
刊名: Geophysical Research Letters
ISSN: 0094-8680
EISSN: 1944-8411
出版年: 2013
卷: 40, 期: 16 起始页码: 4266
结束页码: 4271
语种: 英语
英文关键词: Australia
; Bayesian
; Gondwana
; tomography
; Torrens Hinge Zone
Scopus关键词: Ambient seismic noise
; Australia
; Bayesian
; Gondwana
; Hierarchical bayesian
; Phase-velocity dispersions
; Shear wave velocity models
; Shear wave velocity structure
; Acoustic wave velocity
; Geochronology
; Phase velocity
; Seismology
; Shear waves
; Uncertainty analysis
; Tomography
; array
; crustal structure
; Paleozoic
; Precambrian
; seismic noise
; seismic tomography
; Southern Hemisphere
; velocity
; Australia
英文摘要: Ambient seismic noise data from the ongoing WOMBAT transportable seismic array in southeast Australia, the largest deployment of its kind in the Southern Hemisphere, are used to produce a high-resolution 3-D shear wave velocity model of the region. We apply a two-stage, transdimensional, hierarchical Bayesian inversion approach to recover phase velocity maps at periods of 1-20 s and then invert phase velocity dispersion for 3-D shear wave velocity structure to the base of the crust. Data uncertainty is propagated through the sequence of inversions, ensuring that model complexity is justified by the quality and quantity of the measurements. The pattern of 3-D velocity variations helps elucidate the geometry and position of key crustal features - such as the Torrens Hinge Zone - associated with the transition from Paleozoic eastern Australia to Precambrian central and western Australia that formed along the proto-Pacific margin of east Gondwana. Key Points Large ambient noise dataset reveals new insight into east Gondwana margin Bayesian transdimensional tomography achieves superior results Candidate for the Tasman Line separating east and west Australia revealed. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883085582&doi=10.1002%2fgrl.50878&partnerID=40&md5=ff529a762e2355f3115302381fbe1491
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5944
Appears in Collections: 气候减缓与适应
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作者单位: Research School of Earth Sciences, Australian National University, Bldg. 142 Mills Rd., Canberra, ACT 0200, Australia
Recommended Citation:
Young M.K.,Cayley R.A.,McLean M.A.,et al. Crustal structure of the east Gondwana margin in southeast Australia revealed by transdimensional ambient seismic noise tomography[J]. Geophysical Research Letters,2013-01-01,40(16).