DOI: 10.1002/2015GL066637
论文题名: Seismic velocity structure of the crust and shallow mantle of the Central and Eastern United States by seismic surface wave imaging
作者: Pollitz F.F. ; Mooney W.D.
刊名: Geophysical Research Letters
ISSN: 0094-9510
EISSN: 1944-9241
出版年: 2016
卷: 43, 期: 1 起始页码: 118
结束页码: 126
语种: 英语
英文关键词: lithosphere
; mantle
; surface waves
Scopus关键词: Seismic waves
; Seismology
; Surface waves
; Velocity
; Volcanoes
; Lithosphere
; Lithosphere structure
; Mantle
; Proterozoic terranes
; Seismic surface wave
; Seismic velocities
; Seismic velocity structure
; Upper mantle structure
; Structural geology
英文摘要: Seismic surface waves from the Transportable Array of EarthScope's USArray are used to estimate phase velocity structure of 18 to 125 s Rayleigh waves, then inverted to obtain three-dimensional crust and upper mantle structure of the Central and Eastern United States (CEUS) down to ∼200 km. The obtained lithosphere structure confirms previously imaged CEUS features, e.g., the low seismic-velocity signature of the Cambrian Reelfoot Rift and the very low velocity at >150 km depth below an Eocene volcanic center in northwestern Virginia. New features include high-velocity mantle stretching from the Archean Superior Craton well into the Proterozoic terranes and deep low-velocity zones in central Texas (associated with the late Cretaceous Travis and Uvalde volcanic fields) and beneath the South Georgia Rift (which contains Jurassic basalts). Hot spot tracks may be associated with several imaged low-velocity zones, particularly those close to the former rifted Laurentia margin. © Published 2015. American Geophysical Union. This article is a US Government work and is in the public domain in the United States of America. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956593500&doi=10.1002%2f2015GL066637&partnerID=40&md5=0c57db20d0788e5383f61b9277b90fcf
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10473
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: U.S.Geological Survey, Menlo Park, CA, United States
Recommended Citation:
Pollitz F.F.,Mooney W.D.. Seismic velocity structure of the crust and shallow mantle of the Central and Eastern United States by seismic surface wave imaging[J]. Geophysical Research Letters,2016-01-01,43(1).