气候变化领域集成服务门户(CCPortal): The Southern Zagros Collisional Orogen: New Insights From Transdimensional Trees Inversion of Seismic Noise

CCPortal

DOI	10.1029/2019GL086258
	The Southern Zagros Collisional Orogen: New Insights From Transdimensional Trees Inversion of Seismic Noise
	Pilia S.; Jackson J.A.; Hawkins R.; Kaviani A.; Ali M.Y.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:4
英文摘要	Imaging and resolving the lateral continuity of 3-D crustal structures enhance our ability to interpret seismicity and to understand how orogens are created. We apply a Bayesian, hierarchical inversion approach based on a transdimensional trees-structured wavelet parameterization to recover phase velocity maps at 2–40 s periods. We then invert phase velocity dispersion to constrain a 3-D shear velocity model of the crust beneath south-central Iran. Together with accurate earthquake centroid depths and focal mechanisms, the pattern of 3-D velocity variations supports recent suggestions that most large earthquakes in the Zagros occur within the lower sedimentary cover or close to the sediment-basement interface. Furthermore, we find evidence for Arabian basement underthrusting beneath central Iran, although only in one location does it appear to generate earthquakes. Our new 3-D tomographic model clarifies and throws new light on the crustal structure of the SE Zagros and its relation to seismicity and active faulting. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Buildings; Earthquakes; Forestry; Phase velocity; Tomography; Velocity; continental underthrusting; Large earthquakes; Phase-velocity dispersions; Sedimentary covers; seismicity; Shear velocity models; Velocity variations; Zagros; Shear flow; collision; crustal structure; imaging method; inversion layer; numerical model; orogeny; phase velocity; seismic noise; seismic tomography; seismicity; shear modulus; thrust; wavelet analysis; Zagros
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170696
作者单位	Department of Earth Sciences-Bullard Labs, University of Cambridge, Cambridge, United Kingdom; Research School of Earth Sciences, The Australian National University, Canberra, ACT, Australia; Laboratoire de Géologie de Lyon Terre, Planètes, Environnement, Ecole Normale Supérieure de Lyon, Lyon, France; Institute of Geosciences, Goethe University Frankfurt, Frankfurt, Germany; Department of Earth Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
推荐引用方式 GB/T 7714	Pilia S.,Jackson J.A.,Hawkins R.,et al. The Southern Zagros Collisional Orogen: New Insights From Transdimensional Trees Inversion of Seismic Noise[J],2020,47(4).
APA	Pilia S.,Jackson J.A.,Hawkins R.,Kaviani A.,&Ali M.Y..(2020).The Southern Zagros Collisional Orogen: New Insights From Transdimensional Trees Inversion of Seismic Noise.Geophysical Research Letters,47(4).
MLA	Pilia S.,et al."The Southern Zagros Collisional Orogen: New Insights From Transdimensional Trees Inversion of Seismic Noise".Geophysical Research Letters 47.4(2020).