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Pervasive low-velocity layer atop the 410-km discontinuity beneath the northwest Pacific subduction zone: Implications for rheology and geodynamics

文献类型：期刊论文

作者Han, Guangjie5,6,7; Li, Juan4,5,6,7; Guo, Guangrui5,6,7; Mooney, Walter D.3; Karato, Shun-ichiro2; Yuen, David A.1,8
刊名EARTH AND PLANETARY SCIENCE LETTERS
出版日期2021-01-15
卷号554页码:13
ISSN号0012-821X
关键词low velocity layer atop the 410 mantle transition zone waveform modeling wetting of grain boundary Northwest Pacific subduction zone water-bearing MTZ
DOI10.1016/j.epsl.2020.116642
英文摘要Regional triplication waveforms of five intermediate-depth events are modeled to simultaneously obtain the compressional (P) and shear (SH) wave velocity structure beneath northwestern Pacific subduction zone. Both the P- and SH-wave velocity models for three different sub-regions show a low-velocity layer (LVL) with a thickness of similar to 55-80 km lying above the 410-km discontinuity with a similar to 900 km lateral extent from the Japan Sea to the northeastern Asian continental margin. With the dihedral angle approaching to zero around 400 km, a minute amount of melt atop the 410-km discontinuity caused by the hydrous slab might completely wet olivine grain boundaries and result in a low seismic velocity layer in this specific subduction zone. This mechanism suggests that the 410-LVL is a low viscosity zone that would partially decouple the upper mantle from the transition zone. We infer that the widespread 410-LVL provides evidence for a water-bearing mantle transition zone beneath the western Pacific subduction zone. (C) 2020 Elsevier B.V. All rights reserved.
WOS关键词MANTLE TRANSITION ZONE ; STAGNANT SLAB ; SEISMIC EVIDENCE ; WATER-CONTENT ; MELT ; CARBON ; HYDRATION ; OLIVINE ; STORAGE ; 410KM
资助项目Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB18010302] ; NSFC[41774065] ; NSFC[41322026] ; Key Research Program of the Institute of Geology & Geophysics, CAS[IGGCAS-201904] ; US Department of Energy[DE-SC0019759] ; National Science Foundation (NSF)[EAR-1918126] ; NSF-CSEDI program[EAR-1764271] ; USGS Earthquake Hazards Program
WOS研究方向Geochemistry & Geophysics
语种英语
出版者ELSEVIER
WOS记录号WOS:000604582500003
资助机构Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; NSFC ; NSFC ; NSFC ; NSFC ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; US Department of Energy ; US Department of Energy ; US Department of Energy ; US Department of Energy ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; NSF-CSEDI program ; NSF-CSEDI program ; NSF-CSEDI program ; NSF-CSEDI program ; USGS Earthquake Hazards Program ; USGS Earthquake Hazards Program ; USGS Earthquake Hazards Program ; USGS Earthquake Hazards Program ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; NSFC ; NSFC ; NSFC ; NSFC ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; US Department of Energy ; US Department of Energy ; US Department of Energy ; US Department of Energy ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; NSF-CSEDI program ; NSF-CSEDI program ; NSF-CSEDI program ; NSF-CSEDI program ; USGS Earthquake Hazards Program ; USGS Earthquake Hazards Program ; USGS Earthquake Hazards Program ; USGS Earthquake Hazards Program ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; NSFC ; NSFC ; NSFC ; NSFC ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; US Department of Energy ; US Department of Energy ; US Department of Energy ; US Department of Energy ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; NSF-CSEDI program ; NSF-CSEDI program ; NSF-CSEDI program ; NSF-CSEDI program ; USGS Earthquake Hazards Program ; USGS Earthquake Hazards Program ; USGS Earthquake Hazards Program ; USGS Earthquake Hazards Program ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; NSFC ; NSFC ; NSFC ; NSFC ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; US Department of Energy ; US Department of Energy ; US Department of Energy ; US Department of Energy ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; NSF-CSEDI program ; NSF-CSEDI program ; NSF-CSEDI program ; NSF-CSEDI program ; USGS Earthquake Hazards Program ; USGS Earthquake Hazards Program ; USGS Earthquake Hazards Program ; USGS Earthquake Hazards Program
源URL[http://ir.iggcas.ac.cn/handle/132A11/99995]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Li, Juan
作者单位1.Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA
2.Yale Univ, Dept Earth & Planetary Sci, New Haven, CT 06520 USA
3.US Geol Survey, MS 977,345 Middlefield Rd, Menlo Pk, CA 94025 USA
4.Chinese Acad Sci, Inst Geol & Geophys, Mohe Observ Geophys, Beijing 100029, Peoples R China
5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
6.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
7.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
8.Ocean Univ China, Dept Comp Sci & Geosci, Qingdao 266003, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Han, Guangjie,Li, Juan,Guo, Guangrui,et al. Pervasive low-velocity layer atop the 410-km discontinuity beneath the northwest Pacific subduction zone: Implications for rheology and geodynamics[J]. EARTH AND PLANETARY SCIENCE LETTERS,2021,554:13.
APA Han, Guangjie,Li, Juan,Guo, Guangrui,Mooney, Walter D.,Karato, Shun-ichiro,&Yuen, David A..(2021).Pervasive low-velocity layer atop the 410-km discontinuity beneath the northwest Pacific subduction zone: Implications for rheology and geodynamics.EARTH AND PLANETARY SCIENCE LETTERS,554,13.
MLA Han, Guangjie,et al."Pervasive low-velocity layer atop the 410-km discontinuity beneath the northwest Pacific subduction zone: Implications for rheology and geodynamics".EARTH AND PLANETARY SCIENCE LETTERS 554(2021):13.

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来源：地质与地球物理研究所

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