Evolution of the Southern Segment of the Philippine Trench: Constraints From Seismic Tomography

doi:10.1029/2018GC007685

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Evolution of the Southern Segment of the Philippine Trench: Constraints From Seismic Tomography
	Fan, Jianke 1,2; Zhao, Dapeng 3
刊名	GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
	2018-11-01
卷号	19 期号:11 页码:4612-4627
ISSN号	1525-2027
DOI	10.1029/2018GC007685
通讯作者	Fan, Jianke(fanjianke@qdio.ac.cn)
英文摘要	A high-resolution model of three-dimensional P wave tomography of the crust and upper mantle beneath the southern part of the Philippine Trench is determined by inverting 22,960 arrival times of 2,789 local earthquakes and 4,660 traveltime residuals of 751 teleseismic events simultaneously. The tomographic method TOMOG3D is used to obtain the tomographic model that has a lateral resolution of 0.6 degrees or better, as shown by extensive checkerboard resolution tests. A model-recovery synthetic test is also performed, which indicates that main features of our tomographic images are quite robust. Our results show that the Philippine Sea slab has subducted down to depths of 450-600km with an overturned dip angle along the southern segment of the Philippine Trench, indicating that the subduction of the Philippine Sea Plate along the southern segment of the Philippine Trench initiated at 20-25Ma, contemporaneous with the Sangihe Trench. The subduction initiation of the Philippine Sea Plate at the central Philippine Trench resulted from the collision between the Philippines and the Palawan block at similar to 10Ma. The subduction completion of the Molucca Sea slab propagated from the south to the north at similar to 5Ma, which presumably resulted in the subduction reorganization of the Philippine Sea Plate along the southern segment of the Philippine Trench and subduction initiation of the Philippine Sea Plate along the northern segment of the Philippine Trench.
资助项目	National Natural Science Foundation of China[41506059] ; National Special Project for Global Change and Air-Sea Interaction[GASI-GEOGE-02] ; Japan Society for the Promotion of Science[Kiban-S 23224012] ; Ministry of Education, Culture, Sports, Science and Technology (MEXT)[Shin-Gakujutsu 26106005]
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000452727800028
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/155811]
专题	海洋研究所_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, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China 3.Tohoku Univ, Dept Geophys, Sendai, Miyagi, Japan
推荐引用方式 GB/T 7714	Fan, Jianke,Zhao, Dapeng. Evolution of the Southern Segment of the Philippine Trench: Constraints From Seismic Tomography[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2018,19(11):4612-4627.
APA	Fan, Jianke,&Zhao, Dapeng.(2018).Evolution of the Southern Segment of the Philippine Trench: Constraints From Seismic Tomography.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,19(11),4612-4627.
MLA	Fan, Jianke,et al."Evolution of the Southern Segment of the Philippine Trench: Constraints From Seismic Tomography".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 19.11(2018):4612-4627.