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, Jianke1,2; Zhao, Dapeng2
2019
Source PublicationPHYSICS OF THE EARTH AND PLANETARY INTERIORS
ISSN0031-9201
Volume286Pages:154-164
Corresponding AuthorFan, Jianke(fanjianke@qdio.ac.cn)
AbstractThe 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.
KeywordSeismic anisotropy Philippine Trench South China Sea Mantle flow
DOI10.1016/j.pepi.2018.12.001
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000456752400013
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/160633
Collection海洋地质与环境重点实验室
Corresponding AuthorFan, Jianke
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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.
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