Layered anisotropy within the crust and lithospheric mantle beneath the Sea of Japan

doi:10.1016/j.jseaes.2016.07.010

CORC > 地质与地球物理研究所 > 中国科学院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

	Layered anisotropy within the crust and lithospheric mantle beneath the Sea of Japan
	Legendre, C. P.1,2; Zhao, L.1; Deschamps, F.1; Chen, Q-F.3
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2016-10-01
卷号	128 页码:181-195
关键词	Seismic Tomography Surface Waves And Free Oscillations Wave Propagation Sea Of Japan
DOI	10.1016/j.jseaes.2016.07.010
文献子类	Article
英文摘要	Continental rifting during the Oligocene to mid-Miocene caused the opening of the Sea of Japan and the separation between the Japanese Islands and the Eurasian Plate. The tectonic evolution in the Sea of Japan is important for understanding the evolution of back-arc regions in active convergent margins. Here, we use data from the seismic stations surrounding the Sea of Japan to map the Rayleigh-wave azimuthal anisotropy in the crust and lithospheric mantle beneath the Sea of Japan. We explore the variations of Rayleigh-wave phase-velocity beneath the Sea of Japan in a broad period range (30-80 s). Rayleigh wave dispersion curves are measured by the two-station technique for a total of 231 interstation paths using vertical-component broad-band waveforms at 22 seismic stations around the Sea of Japan from 1411 global earthquakes. The resulting maps of Rayleigh-wave phase velocity and azimuthal anisotropy allow the examination of azimuthal anisotropy at specific periods. They exhibit several regions with different isotropic and anisotropic patterns: the Japan Basin displays fast velocities at shorter periods (30 and 40 s) with NNE-SSW anisotropy, whereas at 60 s and longer, the velocities become slow even if the anisotropy remains NE-SW; the East China Sea shows fast velocities at all periods (30-80 s) with constant NW-SE anisotropy. Trench-normal anisotropy beneath the Japanese Islands is found at short periods (30-40 s) and become trench-parallel at periods of 60 s and longer. Overall, our model resolves two layers of anisotropy, the shallowest and deepest layers being potentially related to frozen deformation due to recent geodynamic events, and asthenospheric flow, respectively. (C) 2016 Elsevier Ltd. All rights reserved.
WOS关键词	WAVE PHASE VELOCITIES ; TRENCH-PARALLEL ANISOTROPY ; CURRENT PLATE MOTIONS ; EAST SEA ; KOREAN PENINSULA ; P-WAVE ; TECTONIC IMPLICATIONS ; SEISMIC VELOCITIES ; SOUTHWESTERN JAPAN ; SUBDUCTION ZONE
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000382338300013
资助机构	Ministry of Science and Technology (MOST) of Taiwan(103-2116-M-001-026-MY3 ; Ministry of Science and Technology (MOST) of Taiwan(103-2116-M-001-026-MY3 ; Academia Sinica Career Development Award(AS-098-CDA-M02) ; Academia Sinica Career Development Award(AS-098-CDA-M02) ; National Science Foundation of China(41130316) ; National Science Foundation of China(41130316) ; 101-2116-M-001-035 ; 101-2116-M-001-035 ; 104-2116-M-001-012 ; 104-2116-M-001-012 ; 104-2811-M-002-063) ; 104-2811-M-002-063) ; Ministry of Science and Technology (MOST) of Taiwan(103-2116-M-001-026-MY3 ; Ministry of Science and Technology (MOST) of Taiwan(103-2116-M-001-026-MY3 ; Academia Sinica Career Development Award(AS-098-CDA-M02) ; Academia Sinica Career Development Award(AS-098-CDA-M02) ; National Science Foundation of China(41130316) ; National Science Foundation of China(41130316) ; 101-2116-M-001-035 ; 101-2116-M-001-035 ; 104-2116-M-001-012 ; 104-2116-M-001-012 ; 104-2811-M-002-063) ; 104-2811-M-002-063)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53321]
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
作者单位	1.Acad Sinica, Inst Earth Sci, 128 Acad Rd,Sec 2, Taipei 11529, Taiwan 2.Natl Taiwan Univ, Dept Geosci, 1,Sec 4,Roosevelt Rd, Taipei 10617, Taiwan 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Legendre, C. P.,Zhao, L.,Deschamps, F.,et al. Layered anisotropy within the crust and lithospheric mantle beneath the Sea of Japan[J]. JOURNAL OF ASIAN EARTH SCIENCES,2016,128:181-195.
APA	Legendre, C. P.,Zhao, L.,Deschamps, F.,&Chen, Q-F..(2016).Layered anisotropy within the crust and lithospheric mantle beneath the Sea of Japan.JOURNAL OF ASIAN EARTH SCIENCES,128,181-195.
MLA	Legendre, C. P.,et al."Layered anisotropy within the crust and lithospheric mantle beneath the Sea of Japan".JOURNAL OF ASIAN EARTH SCIENCES 128(2016):181-195.