Anisotropic Rayleigh wave phase velocity maps of eastern China

doi:10.1002/2013JB010781

	Anisotropic Rayleigh wave phase velocity maps of eastern China
	Legendre, C. P.1; Deschamps, F.1; Zhao, L.1; Lebedev, S.2; Chen, Q. -F.3
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
	2014-06-01
卷号	119 期号:6 页码:4802-4820
ISSN号	2169-9313
DOI	10.1002/2013JB010781
文献子类	Article
英文摘要	We explore the variations of Rayleigh wave phase velocity beneath eastern China in a broad period range (20-200 s). Rayleigh wave dispersion curves are measured by the two-station technique for a total of 734 interstation paths using vertical component broadband waveforms at 39 seismic stations in eastern China from 466 global earthquakes. In addition, 599 waveform inversion interstation measurements were added to this data set. The interstation dispersion curves are then inverted for high-resolution isotropic and azimuthally anisotropic phase velocity maps at periods between 20 and 200 s. At shorter periods sampling the crustal depth range, phase velocities are higher in the southeastern part of the region, reflecting the thinner crust there. The Jiangnan Belt separates Cathaysia from the Yangtze Craton, the latter with thicker crust and a deep, high-velocity cratonic root. The eastern part of Yangtze Craton, however, east of 115-116 degrees E, does not display a deep root and has a thin lithosphere. Azimuthal anisotropy at long periods (>120 s) shows fast propagation directions broadly similar to that of the absolute plate motion. Beneath Cathaysia and eastern Yangtze Craton, anisotropy in the asthenosphere is strong and suggests coast-perpendicular flow. Asthenospheric flow from beneath China's thick continental lithosphere toward the thinner lithosphere of the margin and the resulting decompression melting may be the fundamental causes of the intraplate basaltic volcanism along the eastern coast of China.
WOS关键词	TRAVEL-TIME TOMOGRAPHY ; AUTOMATED MULTIMODE INVERSION ; UPPER-MANTLE TOMOGRAPHY ; BENEATH SOUTHEAST-ASIA ; CURRENT PLATE MOTIONS ; CENTRAL UNITED-STATES ; SINO-KOREAN CRATON ; SEISMIC ANISOTROPY ; AZIMUTHAL ANISOTROPY ; LITHOSPHERE BENEATH
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000339711000017
资助机构	Academia Sinica (Taipei, Taiwan)(AS-098-CDA-M02) ; Academia Sinica (Taipei, Taiwan)(AS-098-CDA-M02) ; National Science Council of Taiwan(NSC-101-2116-M-001-035 ; National Science Council of Taiwan(NSC-101-2116-M-001-035 ; Science Foundation Ireland(09/RFP/GEO2550) ; Science Foundation Ireland(09/RFP/GEO2550) ; NSC-101-2116-M-001-001-MY3) ; NSC-101-2116-M-001-001-MY3) ; Academia Sinica (Taipei, Taiwan)(AS-098-CDA-M02) ; Academia Sinica (Taipei, Taiwan)(AS-098-CDA-M02) ; National Science Council of Taiwan(NSC-101-2116-M-001-035 ; National Science Council of Taiwan(NSC-101-2116-M-001-035 ; Science Foundation Ireland(09/RFP/GEO2550) ; Science Foundation Ireland(09/RFP/GEO2550) ; NSC-101-2116-M-001-001-MY3) ; NSC-101-2116-M-001-001-MY3) ; Academia Sinica (Taipei, Taiwan)(AS-098-CDA-M02) ; Academia Sinica (Taipei, Taiwan)(AS-098-CDA-M02) ; National Science Council of Taiwan(NSC-101-2116-M-001-035 ; National Science Council of Taiwan(NSC-101-2116-M-001-035 ; Science Foundation Ireland(09/RFP/GEO2550) ; Science Foundation Ireland(09/RFP/GEO2550) ; NSC-101-2116-M-001-001-MY3) ; NSC-101-2116-M-001-001-MY3) ; Academia Sinica (Taipei, Taiwan)(AS-098-CDA-M02) ; Academia Sinica (Taipei, Taiwan)(AS-098-CDA-M02) ; National Science Council of Taiwan(NSC-101-2116-M-001-035 ; National Science Council of Taiwan(NSC-101-2116-M-001-035 ; Science Foundation Ireland(09/RFP/GEO2550) ; Science Foundation Ireland(09/RFP/GEO2550) ; NSC-101-2116-M-001-001-MY3) ; NSC-101-2116-M-001-001-MY3)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/84816]
专题	中国科学院地质与地球物理研究所
通讯作者	Legendre, C. P.
作者单位	1.Acad Sinica, Inst Earth Sci, Taipei 115, Taiwan 2.Dublin Inst Adv Studies, Geophys Sect, Dublin 4, Ireland 3.Chinese Acad Sci, Key Lab Earths Deep Interior, Inst Geol & Geophys, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Legendre, C. P.,Deschamps, F.,Zhao, L.,et al. Anisotropic Rayleigh wave phase velocity maps of eastern China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2014,119(6):4802-4820.
APA	Legendre, C. P.,Deschamps, F.,Zhao, L.,Lebedev, S.,&Chen, Q. -F..(2014).Anisotropic Rayleigh wave phase velocity maps of eastern China.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,119(6),4802-4820.
MLA	Legendre, C. P.,et al."Anisotropic Rayleigh wave phase velocity maps of eastern China".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 119.6(2014):4802-4820.