DOI: 10.1002/2015GL063733
论文题名: Inverting interpolated receiver functions with surface wave dispersion and gravity: Application to the western U.S. and adjacent Canada and Mexico
作者: Chai C. ; Ammon C.J. ; Maceira M. ; Herrmann R.B.
刊名: Geophysical Research Letters
ISSN: 0094-9167
EISSN: 1944-8898
出版年: 2015
卷: 42, 期: 11 起始页码: 4359
结束页码: 4366
语种: 英语
英文关键词: gravity
; lithospheric structure
; North America
; receiver function
; surface wave dispersion
Scopus关键词: Geologic models
; Gravitation
; Interpolation
; Seismic waves
; Shear flow
; Shear waves
; Surface waves
; Azimuthal variations
; Interpolation schemes
; Lithospheric structure
; North America
; Rayleigh-wave dispersion
; Receiver functions
; Spatial interpolation
; Surface wave dispersion
; Dispersion (waves)
英文摘要: We use P wave receiver functions from the western U.S. and adjacent regions to construct a receiver function wavefield interpolation scheme that helps to equalize the lateral sampling of the receiver functions and the surface wave dispersion and to greatly simplify the receiver functions. Spatial interpolation and smoothing suppress poorly sampled and difficult to interpret back azimuthal variations and allow the extraction of the first-order features in the receiver function wavefield, including observations from several ray parameter ranges. We combine the interpolated receiver functions with Rayleigh wave dispersion estimates and surface gravity observations to estimate the 3-D shear wave speed beneath the region. Speed variations in the 3-D model correlate strongly with expected geologic variations and illuminate broad-scale features of the western U.S. crust and upper mantle. The model is smooth, self-consistent, and demonstrates the compatibility of the interpolated receiver functions and dispersion observations. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84934438015&doi=10.1002%2f2015GL063733&partnerID=40&md5=4a1642b2ec86073a8dc0e851dc75e0cd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8783
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 Geosciences, Pennsylvania State University, University Park, PA, United States
Recommended Citation:
Chai C.,Ammon C.J.,Maceira M.,et al. Inverting interpolated receiver functions with surface wave dispersion and gravity: Application to the western U.S. and adjacent Canada and Mexico[J]. Geophysical Research Letters,2015-01-01,42(11).