| P-wave anisotropic tomography of the central and southern Philippines | |
| Fan, Jianke1,2; Zhao, Dapeng2 | |
| 2019 | |
| Source Publication | PHYSICS OF THE EARTH AND PLANETARY INTERIORS
 |
| ISSN | 0031-9201 |
| Volume | 286Pages:154-164 |
| Corresponding Author | Fan, Jianke(fanjianke@qdio.ac.cn) |
| Abstract | 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. |
| Keyword | Seismic anisotropy Philippine Trench South China Sea Mantle flow |
| DOI | 10.1016/j.pepi.2018.12.001 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Geochemistry & Geophysics |
| WOS Subject | Geochemistry & Geophysics |
| WOS ID | WOS:000456752400013 |
| Publisher | ELSEVIER SCIENCE BV |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/160633 |
| Collection | 海洋地质与环境重点实验室 |
| Corresponding Author | Fan, Jianke |
| Affiliation | 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 |
| First Author Affilication | Institute of Oceanology, Chinese Academy of Sciences |
| Corresponding Author Affilication | Institute 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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