P-wave anisotropic tomography of the central and southern Philippines

doi:10.1016/j.pepi.2018.12.001

IOCAS-IR > 海洋地质与环境重点实验室

	P-wave anisotropic tomography of the central and southern Philippines
	Fan, Jianke 1,2; Zhao, Dapeng 2
	2019
发表期刊	PHYSICS OF THE EARTH AND PLANETARY INTERIORS
ISSN	0031-9201
卷号	286 页码:154-164
通讯作者	Fan, Jianke(fanjianke@qdio.ac.cn)
摘要	The first P-wave anisotropic tomography of the crust and upper mantle beneath the central and southern Philippines is obtained by inverting a large number of P-wave arrival-time data of local earthquakes and teleseismic events, which sheds new light on the geodynamic evolution of the study region. Our results show that fast-velocity directions of azimuthal anisotropy in the upper mantle below 250 km depth and the mantle transition zone change gradually from NE-SW to NW-SE northwards, possibly indicating a horizontal mantle flow in and around the mantle transition zone. The existence of the horizontal flow suggests that basalts of the Indian type mantle in the eastern part of the South China Sea possibly originated from the mantle beneath the Celebes and Molucca seas. Our results also reveal a positive radial anisotropy (V-pv < V-ph) reflecting a horizontal mantle flow between the Manila Trench and the northern part of the Philippine Trench, which may facilitate the subduction initiation along the northern Philippine Trench.
关键词	Seismic anisotropy Philippine Trench South China Sea Mantle flow
DOI	10.1016/j.pepi.2018.12.001
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41876043] ; National Special Project for Global Change and Air-Sea Interaction[GASI-GEOGE-02] ; Japan Society for the Promotion of Science[Kiban-S 23224012] ; Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT)[Shin-Gakujutsu 26106005] ; National Natural Science Foundation of China[41876043] ; National Special Project for Global Change and Air-Sea Interaction[GASI-GEOGE-02] ; Japan Society for the Promotion of Science[Kiban-S 23224012] ; Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT)[Shin-Gakujutsu 26106005]
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000456752400013
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/160633
专题	海洋地质与环境重点实验室
通讯作者	Fan, Jianke
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Tohoku Univ, Grad Sch Sci, Dept Geophys, Sendai, Miyagi 9808578, Japan
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Fan, Jianke,Zhao, Dapeng. P-wave anisotropic tomography of the central and southern Philippines[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2019,286:154-164.
APA	Fan, Jianke,&Zhao, Dapeng.(2019).P-wave anisotropic tomography of the central and southern Philippines.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,286,154-164.
MLA	Fan, Jianke,et al."P-wave anisotropic tomography of the central and southern Philippines".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 286(2019):154-164.