气候变化领域集成服务门户(CCPortal): Evaluating Global Tomography Models With Antipodal Ambient Noise Cross-Correlation Functions

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DOI	10.1029/2020JB020444
	Evaluating Global Tomography Models With Antipodal Ambient Noise Cross-Correlation Functions
	Xie J.; Chu R.; Ni S.
发表日期	2021
ISSN	21699313
卷号	126 期号:3
英文摘要	It is essential to evaluate global tomography models, which provide important information for understanding Earth's structure and dynamics. Long-period surface waves propagating between antipodal stations are good candidates for this purpose since they depend on global-scale velocity variations in the upper mantle. In this study, we extract minor-arc and major-arc Rayleigh waves from ambient noise cross correlations between GEOSCOPE station AIS and ∼1,800 USArray stations near the antipode of AIS. We identify two Rayleigh-wave-focusing regions and simulate the observed maximum amplitude pattern at the antipodal region using synthetic surface waves based on three global tomography models. Our simulations suggest that seismic heterogeneity of the tomography models need to be inflated by a factor of 2–3 in oceanic regions to explain the observed focusing pattern of surface waves near the antipodal region. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	ambient noise cross-correlation functions; antipodal surface waves; mantle heterogeneity; tomography model evaluation
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187284
作者单位	State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Xie J.,Chu R.,Ni S.. Evaluating Global Tomography Models With Antipodal Ambient Noise Cross-Correlation Functions[J],2021,126(3).
APA	Xie J.,Chu R.,&Ni S..(2021).Evaluating Global Tomography Models With Antipodal Ambient Noise Cross-Correlation Functions.Journal of Geophysical Research: Solid Earth,126(3).
MLA	Xie J.,et al."Evaluating Global Tomography Models With Antipodal Ambient Noise Cross-Correlation Functions".Journal of Geophysical Research: Solid Earth 126.3(2021).