气候变化领域集成服务门户(CCPortal): Shear Velocity Model of Alaska Via Joint Inversion of Rayleigh Wave Ellipticity, Phase Velocities, and Receiver Functions Across the Alaska Transportable Array

CCPortal

DOI	10.1029/2019JB018582
	Shear Velocity Model of Alaska Via Joint Inversion of Rayleigh Wave Ellipticity, Phase Velocities, and Receiver Functions Across the Alaska Transportable Array
	Berg E.M.; Lin F.-C.; Allam A.; Schulte-Pelkum V.; Ward K.M.; Shen W.
发表日期	2020
ISSN	21699313
卷号	125 期号:2
英文摘要	Through the Alaska Transportable Array deployment of over 200 stations, we create a 3-D tomographic model of Alaska with sensitivity ranging from the near surface (<1 km) into the upper mantle (~140 km). We perform a Markov chain Monte Carlo joint inversion of Rayleigh wave ellipticity and phase velocities, from both ambient noise and earthquake measurements, along with receiver functions to create a shear wave velocity model. We also use a follow-up phase velocity inversion to resolve interstation structure. By comparing our results to previous tomography, geology, and geophysical studies we are able to validate our findings and connect localized near-surface studies with deeper, regional models. Specifically, we are able to resolve shallow basins, including the Copper River, Cook Inlet, Yukon Flats, Nenana, and a variety of other shallower basins. Additionally, we gain insight on the interaction between the upper mantle wedge, asthenosphere, and active and nonactive volcanism along the Aleutians and Denali volcanic gap, respectively. We observe thicker crust beneath the Brooks Range and south of the Denali fault within the Wrangellia Composite Terrane and thinner crust in the Yukon Composite Terrane in interior Alaska. We also gain new perspective on the Wrangell Volcanic Field and its interaction between surrounding asthenosphere and the Yakutat Terrane. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Alaska; ambient noise; Bayesian; Rayleigh ellipticity; receiver functions; tomography
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/188001
作者单位	Department of Geology and Geophysics, University of Utah, Salt Lake City, UT, United States; Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan; Cooperative Institute for Research in Environmental Sciences and Department of Geological Sciences, University of Colorado Boulder, Boulder, CO, United States; Department of Geology and Geological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, United States; Department of Geosciences, State University of New York at Stony Brook, Stony Brook, NY, United States
推荐引用方式 GB/T 7714	Berg E.M.,Lin F.-C.,Allam A.,et al. Shear Velocity Model of Alaska Via Joint Inversion of Rayleigh Wave Ellipticity, Phase Velocities, and Receiver Functions Across the Alaska Transportable Array[J],2020,125(2).
APA	Berg E.M.,Lin F.-C.,Allam A.,Schulte-Pelkum V.,Ward K.M.,&Shen W..(2020).Shear Velocity Model of Alaska Via Joint Inversion of Rayleigh Wave Ellipticity, Phase Velocities, and Receiver Functions Across the Alaska Transportable Array.Journal of Geophysical Research: Solid Earth,125(2).
MLA	Berg E.M.,et al."Shear Velocity Model of Alaska Via Joint Inversion of Rayleigh Wave Ellipticity, Phase Velocities, and Receiver Functions Across the Alaska Transportable Array".Journal of Geophysical Research: Solid Earth 125.2(2020).